Ceiling substrate support member, ceiling substrate, ceiling substrate structure, and wooden building

Abstract

To provide a ceiling substrate support member with a simple structure, a ceiling substrate, a ceiling substrate structure, and a wooden building without greatly increasing loads of manufacture and construction and member costs.SOLUTION: A ceiling substrate support member 10 comprises: first C-shaped steel 11 fitted spanning between a pair of wooden beams 2, 3 arranged opposite each other; first C-shaped steel metal fixtures 12, 13, first bolts 14B1, 15B1, etc., first nuts 14N1, 15N1, etc., first screws 16a1, 17a1, etc., fixing lengthwise ends of the first C-shaped steel 11 to the pair of beams 2, 3 respectively; and first metallic suspension members 18, 19 which are arranged at a constant interval along the length direction of the first C-shaped steel 11 with upper ends engaged with and fixed to the first C-shaped steel 11 and with a first ceiling joist receiver NB1 fitted to lower ends.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a ceiling subfloor support member that supports a ceiling subfloor in a large wooden building, a ceiling subfloor consisting of a ceiling subfloor and a ceiling subfloor support member, and a wooden building. [Background technology]

[0002] In wooden buildings, generally, if there is a floor on the upper floor, wooden pieces of wood that will serve as joist supports are hung at a specified interval from hanging beams attached to the floor beams of the upper floor, and wooden joists are assembled at short specified intervals perpendicular to these joist supports to form a ceiling base material, and ceiling materials such as wooden panels, gypsum board, and plasterboard are attached to this ceiling base material to form the ceiling. When ceiling underlayment is suspended from hanging beams attached to the floor beams of the upper floor in this way, vibrations from the upper floor are transmitted from the floor beams to the ceiling of the lower floor. To avoid this, it has been proposed to place a ceiling hanging beam support separate from the floor beams of the upper floor, and to suspend the ceiling underlayment from hanging beams attached to this ceiling hanging beam support. For example, Patent Document 1 (JP 2003-268916 A) discloses a ceiling structure in which ceiling hanger wood supports 11 are arranged side by side without making direct contact with floor beams 21 that support the floors of the upper floors of a building, and the ceiling hanger wood supports 11 have an overall T-shaped or L-shaped cross section with the end faces of hanger wood support reinforcements 14 with rectangular cross sections abutting against the sides of the hanger wood support main body 13, or the end faces of the hanger wood support main body abutting against the sides of the hanger wood support reinforcements 14, and hanger member mounting hardware 15 is fixed to the side of the hanger wood support main body 13, and siding supports 17 made of channel material are attached to the lower ends of the hanger bolts 16, and multiple siding supports 18 extending perpendicular to the siding supports 17 are fixed to the siding supports 17 at predetermined intervals via clip members 19, and ceiling members 12 are attached to the underside of the siding supports 18.

[0003] Incidentally, when installing a ceiling in a part of a large wooden building, such as a warehouse, where there is no upper floor, it is possible to apply the ceiling structure of Patent Document 1, suspending a ceiling hanging wooden support between adjacent pillars or between adjacent beams, attaching a hanging bolt 16 to this ceiling hanging wooden support 11 via a hanging member mounting bracket 15, hanging a siding support 17 to which a siding 18 is fixed with the hanging bolt 16, and installing a ceiling material 12 to the siding 18. However, in large wooden buildings such as warehouses, the spans between adjacent pillars or beams are significantly longer than in ordinary wooden houses, and if the ceiling hanging timber support 11 is made from normal-sized components, the ceiling hanging timber support 11 will bend significantly, causing the center of the ceiling to bulge downward significantly. In this case, in order to reduce the deflection of the ceiling hanging wood support material 11, it is possible to consider using a large ceiling hanging wood support material 11 with a cross-sectional area significantly larger than normal, but this would result in a problem of significantly increasing the burden of manufacturing and construction and the cost of materials.

[0004] Furthermore, Patent Document 2 (JP 2004-332326 A) discloses a ceiling structure 3 that is arranged below a ceiling support material consisting of an H-shaped steel beam 1 and a purlin 2 that is installed under the roof of a steel-framed building without a ceiling slab. The ceiling structure 3 includes a plurality of rafter supports 4, a plurality of main bars 6 that are first rafter members, a plurality of cross bars 8 that are second rafter members, a plurality of small bars 9 that are third rafter members, and numerous ceiling panels 10. Each rafter support 4 is supported by the H-shaped steel beam 1 or the purlin 2 via support means 5a or 5b. Each support means 5a, 5b is composed of a suspension bolt 11, an upper hanger 12, and a lower hanger 13. The upper hanger 12 of each support means 5a clamps the side edge of the H-shaped steel beam 1, and the upper hanger 12 of each support means 5b clamps the side edge of the lower flange of the purlin 2. However, under the roof of a large wooden building, there are no steel ceiling supports (H-shaped steel beams 1, purlins 2) like those installed under the roof of the steel-framed building of Patent Document 2, and the ceiling structure of Patent Document 3 cannot be applied to the ceiling structure of a large wooden building. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-268916 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-332326 Summary of the Invention [Problem to be solved by the invention]

[0006] The problem that this invention aims to solve is to provide a ceiling underlayment support member, ceiling underlayment, ceiling underlayment structure, and wooden building with a simple structure without significantly increasing the burden of manufacturing and construction and the cost of components. [Means for solving the problem]

[0007] The invention of claim 1 solves the above problem by providing a ceiling underlayment support member comprising: a long metal hanging member support member attached to a pair of wooden beams or pillars arranged opposite each other so as to be spanned across the pair of beams or pillars; a hanging member support member fixing means for fixing the longitudinal ends of the hanging member support member to each of the pair of beams or pillars; and a pair of metal hanging members arranged at regular intervals along the longitudinal direction of the hanging member support member, the upper ends of which engage or are fixed to the hanging member support member and the lower ends of which have metal ceiling underlayment joist holders attached.

[0008] The invention of claim 2 solves the above problem by providing a ceiling subfloor support member in which the hanging member support material is a C-shaped steel beam, and the hanging member support fixing means is a C-shaped steel fixing bracket having an attachment surface abutment portion that abuts against the attachment surface of the beam or column to which the end of the C-shaped steel is attached and a C-shaped steel support portion that supports the end of the C-shaped steel beam, and a linear member that fixes the attachment surface abutment portion to the attachment surface of the beam or column.

[0009] The invention of claim 3 solves the above problem by providing a ceiling underlayment support member in which the hanging member is equipped with a hook portion that engages with the lip portion of the C-shaped steel, a hanger portion that supports the soffit support, and a hanging bolt whose upper end is connected to the hook portion and whose lower end is connected to the hanger portion.

[0010] The invention of claim 4 is a ceiling underlayment having a metal ceiling underlayment, a first ceiling underlayment support member and a second ceiling underlayment support member that support the ceiling underlayment, wherein the ceiling underlayment comprises first and second sill supports arranged at regular intervals in one direction, and a plurality of sills arranged at regular intervals in a direction perpendicular to the one direction and fixed to the first sill supports and the second sill supports, the first ceiling underlayment support members are attached to a pair of wooden beams or columns arranged opposite to each other so as to span the pair of beams or columns, a long metal first hanging member support member arranged above the first sill supports and facing the first sill supports, first hanging member support member fixing means that fixes the longitudinal ends of the first hanging member support member to each of the pair of beams or columns, and a first hanging member support member fixing means whose upper end engages with or is fixed to the first hanging member support member. The above-mentioned problem is solved by providing a ceiling substructure comprising: a first hanging member support member at its lower end, the first soffit support member attached to a pair of wooden beams or pillars arranged opposite each other so as to span the pair; a long second hanging member support member made of metal arranged above the second soffit support member and opposite the second soffit support member; second hanging member support member fixing means for fixing the longitudinal ends of the second hanging member support member to each of the pair of beams or pillars; and a pair of second hanging members made of metal arranged at a regular interval along the longitudinal direction of the second hanging member support member, the upper ends of which engage with or are fixed to the second hanging member support member and the second soffit support member attached to their lower ends.

[0011] The invention of claim 5 solves the above problem by providing a ceiling substructure in which the first hanging member support material is a first C-shaped steel, and the first hanging member support material fixing means is a first C-shaped steel fixing bracket having a first mounting surface abutment portion that abuts against the mounting surface of the beam or column to which the end of the first C-shaped steel is attached and a first C-shaped steel support portion that supports the end of the first C-shaped steel, and a first linear member that fixes the first mounting surface abutment portion to the mounting surface of the beam or column.

[0012] The invention of claim 6 solves the above problem by providing a ceiling underlayment in which the second hanging member support material is a second C-shaped steel, and the second hanging member support material fixing means is a second C-shaped steel fixing bracket having a second mounting surface abutment portion that abuts the surface of the beam or column to which the end of the second C-shaped steel is attached and a second C-shaped steel support portion that supports the end of the second C-shaped steel, and a second linear member that fixes the second mounting surface abutment portion to the mounting surface of the beam or column.

[0013] The invention of claim 7 solves the above problem by providing a ceiling substructure in which the first hanging member has a hook portion that engages with the lip portion of the first C-shaped steel, a hanger portion that supports the first soffit support, and a hanging bolt whose upper end is connected to the hook portion and whose lower end is connected to the hanger portion.

[0014] The invention of claim 8 solves the above problem by providing a ceiling substructure in which the second hanging member has a hook portion that engages with the lip portion of the second C-shaped steel, a hanger portion that supports the second soffit support, and a hanging bolt whose upper end is connected to the hook portion and whose lower end is connected to the hanger portion.

[0015] The invention of claim 9 is a ceiling substructure in which a metal ceiling substructure is supported by a first ceiling substructure support member and a second ceiling substructure support member, the ceiling substructure comprises a first sill support, a second sill support and a plurality of sills, the first ceiling substructure support member comprises a long metal first hanging member support member, a first hanging member support member fixing means and a pair of metal first hanging members, the first hanging member support member is arranged so as to be hung across a pair of wooden beams or pillars arranged opposite each other, the longitudinal ends of the first hanging member support member are fixed to each of the pair of beams or pillars by the first hanging member support member fixing means, the upper end of the first hanging member is engaged with or fixed to the first hanging member support member, the first sill support is arranged below the first hanging member support member facing the first hanging member support member and is attached to the lower end of the first hanging member. The second ceiling underlayment support member comprises a long metal second hanging member support member, a second hanging member support member fixing means, and a pair of metal second hanging members, the second hanging member support member is arranged so as to be hung across the pair of beams or pillars at a fixed distance from the first hanging member support member, the longitudinal ends of the second hanging member support member are fixed to each of the pair of beams or pillars by the second hanging member support member fixing means, the upper end of the second hanging member is engaged with or fixed to the second hanging member support member, the second soffit support is arranged below the second hanging member support member facing the second hanging member support member and attached to the lower end of the second hanging member, and each of the multiple soffits is arranged at fixed intervals and fixed across the first soffit support and the second soffit support, thereby providing a ceiling underlayment structure that solves the above-mentioned problem.

[0016] The invention of claim 10 is a wooden building comprising a pair of wooden beams or pillars arranged opposite to each other, a metal ceiling underlayment, a ceiling underlayment having a first ceiling underlayment support member and a second ceiling underlayment support member that support the ceiling underlayment, and ceiling boards attached to the ceiling underlayment, wherein the ceiling underlayment comprises first and second joist supports arranged at regular intervals in one direction, and a plurality of joists arranged at regular intervals in a direction perpendicular to the one direction and fixed to cross the first and second joist supports, the first ceiling underlayment support members are attached to the pair of wooden beams or pillars arranged opposite to each other so as to span the pair of beams or pillars, a long metal first hanging member support member arranged above the first joist supports facing the first joist support, and first hanging member support member fixing means for fixing the longitudinal ends of the first hanging member support member to each of the pair of beams or pillars. and a pair of metal first hanging members, the upper ends of which engage with or are fixed to the first hanging member receiving material and the lower ends of which have the first joist support attached, and which are arranged at regular intervals along the longitudinal direction of the first hanging member receiving material, the second ceiling underlayment support member being attached to a pair of wooden beams or pillars arranged opposite each other so as to span the pair of beams or pillars, a long metal second hanging member receiving material arranged above the second joist support and opposite the second joist support, second hanging member receiving material fixing means for fixing the longitudinal ends of the second hanging member receiving material to each of the pair of beams or pillars, and a pair of metal second hanging members, the upper ends of which engage with or are fixed to the second hanging member receiving material and the lower ends of which have the second joist support attached, and which are arranged at regular intervals along the longitudinal direction of the second hanging member receiving material. [Effects of the Invention]

[0017] In the ceiling substructure support member of the invention described in claim 1, a long metal hanging member support member is fixed to each of a pair of beams or pillars by a hanging member support member fixing means, the upper ends of the pair of metal hanging members are engaged with or fixed to the hanging member support members, and metal ceiling substructure joist supports are attached to the lower ends of the pair of hanging members, thereby achieving the effect of forming a ceiling substructure support member with a simple structure without significantly increasing the manufacturing and construction load and component costs.

[0018] The ceiling substructure support member of the invention described in claim 2 further has the effect of easily fixing the C-shaped steel to the beam or column by simply supporting the end of the C-shaped steel with a C-shaped steel fixing bracket and fixing the mounting surface abutment portion of the C-shaped steel fixing bracket to the mounting surface of the beam or column with a linear member.

[0019] The ceiling underlayment support member of the invention described in claim 3 further has the effect of allowing the hanging bolt to be easily suspended from the C-shaped steel by simply engaging the hook portion of the hanging bolt with the lip portion of the C-shaped steel.

[0020] In the ceiling substructure of the invention described in claim 4, the long metal first hanging member support member of the first ceiling substructure support member is fixed to each of a pair of beams or pillars by a first hanging member support member fixing means, the upper ends of the pair of metal first hanging members are engaged with or fixed to the first hanging member support members, first soffit supporters of the metal ceiling substructure are attached to the lower ends of the pair of first hanging members, the long metal second hanging member support member of the second ceiling substructure support member is fixed to each of a pair of beams or pillars by a second hanging member support member fixing means, the upper ends of the pair of metal second hanging members are engaged with or fixed to the second hanging member support members, second soffit supporters of the ceiling substructure are attached to the lower ends of the pair of second hanging members, and multiple soffits are fixed across the first soffit supporters and the second soffit supporters, thereby achieving the effect of forming a ceiling substructure with a simple structure without significantly increasing the burden of manufacturing and construction and the cost of materials.

[0021] The ceiling substructure of the invention described in claim 5 further has the effect of easily fixing the first C-shaped steel to the beam or column by simply supporting the end of the first C-shaped steel with a first C-shaped steel fixing bracket and fixing the first mounting surface abutment portion of the first C-shaped steel fixing bracket to the mounting surface of the beam or column using a first linear member.

[0022] The ceiling substructure of the invention described in claim 6 further has the effect of easily fixing the second C-shaped steel to the beam or column by simply supporting the end of the second C-shaped steel with a second C-shaped steel fixing bracket and fixing the second mounting surface abutment portion of the second C-shaped steel fixing bracket to the mounting surface of the beam or column using a second linear member.

[0023] The ceiling substructure of the invention described in claim 7 further has the effect of making it possible to easily hang the first hanging member hanging bolt from the first C-shaped steel by simply engaging the hook portion of the hanging bolt of the first hanging member with the lip portion of the first C-shaped steel.

[0024] The ceiling substructure of the invention described in claim 8 further has the effect of making it possible to easily hang the second hanging member hanging bolt from the second C-shaped steel by simply engaging the hook portion of the second hanging member hanging bolt with the lip portion of the second C-shaped steel.

[0025] In the ceiling substructure of the invention described in claim 9, the long metal first hanging member support member of the first ceiling substructure support member is fixed to each of a pair of beams or pillars by a first hanging member support member fixing means, the upper ends of the pair of metal first hanging members are engaged with or fixed to the first hanging member support members, first soffit supporters of the metal ceiling substructure are attached to the lower ends of the pair of first hanging members, the long metal second hanging member support member of the second ceiling substructure support member is fixed to each of a pair of beams or pillars by a second hanging member support member fixing means, the upper ends of the pair of metal second hanging members are engaged with or fixed to the second hanging member support members, second soffit supporters of the ceiling substructure are attached to the lower ends of the pair of second hanging members, and multiple soffits are fixed across the first soffit supporters and the second soffit supporters, thereby achieving the effect of forming a simple ceiling substructure structure without significantly increasing the burden of manufacturing and construction and the cost of materials.

[0026] In the wooden building of the invention described in claim 10, the long metal first hanging member receiving member of the first ceiling base material support member is fixed to each of a pair of beams or columns by a first hanging member receiving member fixing means, the upper ends of the pair of metal first hanging members are engaged with or fixed to the first hanging member receiving members, first sill supports of the metal ceiling base material are attached to the lower ends of the pair of first hanging members, and the long metal second hanging member receiving member of the second ceiling base material support member is fixed to the pair of beams or columns by a second hanging member receiving member fixing means. The second hanging members are fixed to each beam or pillar, the upper ends of a pair of metal second hanging members engage with or are fixed to the second hanging member support material, the second sill support of the ceiling underlayment material is attached to the lower ends of the pair of second hanging members, multiple sills are fixed across the first sill support and the second sill support, and ceiling panels are attached to the ceiling underlayment material, thereby achieving the effect of being able to form a wooden building with a ceiling underlayment of a simple structure without significantly increasing the burden of manufacturing and construction and the cost of materials. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 2 is a front view of the ceiling underlayment of the present invention. [Figure 2] FIG. 2 is a rear view of the ceiling substrate shown in FIG. [Figure 3] FIG. 2 is a plan view of the ceiling substructure shown in FIG. 1. [Figure 4] 4 is a cross-sectional view taken along the line AA in FIG. 3. [Figure 5] This is the cross section taken along line BB in Figure 3. [Figure 6] 2 is a perspective view of a ceiling substrate and a first ceiling substrate support member of the ceiling substrate shown in FIG. 1. FIG. [Figure 7] 3 is a perspective view of a ceiling substrate and a second ceiling substrate support member of the ceiling substrate shown in FIG. 2. FIG. [Figure 8] 7 is an exploded perspective view of the ceiling substrate and the first ceiling substrate support member shown in FIG. 6. FIG. [Figure 9] 8 is an exploded perspective view of the ceiling substrate and the second ceiling substrate support member shown in FIG. 7. FIG. [Figure 10] FIG. 1 is a perspective view of the ceiling portion of a wooden building using ceiling underlayment 1. [Figure 11] FIG. 11 is a plan view of the wooden building shown in FIG. [Figure 12] 11A and 11B are front and rear views of the wooden building shown in FIG. 10. [Figure 13] 12A and 12B are cross-sectional views taken along lines CC, DD, EE and FF in FIG. 11. DETAILED DESCRIPTION OF THE INVENTION

[0028] [Ceiling base and ceiling base structure configuration] Figure 1 is a front view of the ceiling substructure of the present invention, Figure 2 is a back view of the ceiling substructure shown in Figure 1, Figure 3 is a plan view of the ceiling substructure shown in Figure 1, Figure 4 is a cross-sectional view AA of Figure 3, Figure 5 is a cross-sectional view BB of Figure 3, Figure 6 is an oblique view of the ceiling substructure material and first ceiling substructure support member of the ceiling substructure shown in Figure 1, Figure 7 is an oblique view of the ceiling substructure material and second ceiling substructure support member of the ceiling substructure shown in Figure 2, Figure 8 is an exploded oblique view of the ceiling substructure material and first ceiling substructure support member shown in Figure 6, and Figure 9 is an exploded oblique view of the ceiling substructure material and second ceiling substructure support member shown in Figure 7. In the drawing, 1 is a ceiling substrate, 2 and 3 are beams, 10 is a first ceiling substrate support member, 11 is a first C-shaped steel, 11bf is a back portion, 11r1 and 11r2 are lip portions, 12 and 13 are first C-shaped steel fixing brackets, 12a, 12b, 13a and 13b are first mounting surface abutment portions, 12c and 13c are first C-shaped steel support portions, 14B1, 14B2, 14B3, 15B1, 15B2 and 15B3 are first bolts, 14N1, 14N2, 14N3, 15N1, 15N2 and 15N3 are first nuts, 16a1, 16a2, 16b1, 16b2, 1 7a1, 17a2, 17b1, 17b2 are first screws, 18, 19 are first hanging members, 18F, 19F are hook portions, 18Fa, 19Fa are hook pieces, 18Fb, 19Fb are connecting pieces, 18B, 19B are hanging bolts, 18H, 19H are hanger portions, 18Ha, 19Ha are hanger pieces, 18Hb, 19Hb are connecting pieces, 18N1, 18N2, 18N3, 19N1, 19N2, 19N3 are connecting nuts, 20 is a second ceiling underlayment support member, 21 is a second C-shaped steel, 21bf is a back portion, 21r1, 21r2 are Lip portion, 22, 23 are second C-shaped steel fixing brackets, 22a, 22b, 23a, 23b are second mounting surface abutment portions, 22c, 23c are second C-shaped steel support portions, 24B1, 24B2, 24B3, 25B1, 25B2, 25B3 are second bolts, 24N1, 24N2, 24N3, 25N1, 25N2, 25N3 are second nuts, 26a1, 26a2, 26b1, 26b2, 27a1, 27a2, 27b1, 27b2 are second screws, 28, 29 are second hanging members, 28F, 29F are hook portions, 28Fa, 29Fa are hook pieces, 28Fb, 29Fb are connecting pieces, 28B, 29B are hanging bolts, 28H, 29H are hanger parts, 28Ha, 29Ha are hanger pieces, 28Hb, 29Hb are connecting pieces, 28N1, 28N2, 28N3, 29N1, 29N2, 29N3 are joining nuts, CB is ceiling board, CM is ceiling underlayment material, NB1 is the first furring strip support, NB2 is the second furring strip support, nb1, nb2 are furring strips, and in each diagram, X represents the left-right direction, Y represents the front-to-back direction, and Z represents the up-down direction, and beams 2, 3 and ceiling board CB are represented by dashed double-dashed lines. As shown in the figure, a ceiling substrate 1 is disposed between a pair of beams 2 and 3 disposed opposite each other, and a ceiling board CB is attached to the ceiling substrate 1. Beams 2 and 3 are assembled to pillars or other beams (both not shown) and arranged parallel in the front-to-back direction (Y direction) at the same height, and are made of wooden materials such as cypress (hinoki), hiba (hiba), cedar (sugi), domestic pine (Japanese pine, larch, Yezo spruce, and Todo fir), Douglas fir, and European red pine. Beams 2 and 3 both have a rectangular longitudinal cross section, with cross-sectional dimensions (short side x long side) of 45 to 240 mm x 105 to 450 mm, a length in the axial direction (Y direction) of approximately 2 m to 9 m, and the distance between beams 2 and 3 of approximately 2 m to 9 m. The ceiling board CB is a panel made of gypsum board, wood, or the like. The ceiling substrate 1 includes a first ceiling substrate support member 10, a second ceiling substrate support member 20, and a ceiling substrate CM.

[0029] [First ceiling underlayment support member] As shown in Figures 6, 8, etc., the first ceiling underlayment support member 10 comprises a first C-shaped steel 11, first C-shaped steel fixing brackets 12, 13, first bolts 14B1, 14B2, 14B3, 15B1, 15B2, 15B3, first nuts 14N1, 14N2, 14N3, 15N1, 15N2, 15N3, first screws 16a1, 16a2, 16b1, 16b2, 17a1, 17a2, 17b1, 17b2, and first hanging members 18, 19. The first C-shaped steel 11 is a steel material extending in the left-right direction (X) and provided with lip portions 11r1 and 11r2 at the lower and upper front sides. The height (length in the Z direction) of the first C-shaped steel 11 is 50 mm to 200 mm, the width (length in the Y direction) is 30 mm to 100 mm, and the length in the X direction is the same as the distance between beams 2 and 3 (the distance between the opposing surfaces of beams 2 and 3). At the left end of the first C-shaped steel 11, two bolt holes are provided at the top of the back portion 11bf and one bolt hole is provided in the lip portion 11r2, and at the right end of the first C-shaped steel 11, two bolt holes are provided at the top of the back portion 11bf and one bolt hole is provided in the lip portion 11r2. The first C-shaped steel fixing bracket 12 consists of a first C-shaped steel support part 12c, which is a U-shaped plate, and first mounting surface abutment parts 12a, 12b which are provided continuously from the upper part of the first C-shaped steel support part 12c, and the first mounting surface abutment parts 12a, 12b each have two screw holes, and the first C-shaped steel support part 12c has one bolt hole at the upper part of the front side and two bolt holes at the upper part of the back side.

[0030] The first C-shaped steel fixing bracket 13 is the same as the first C-shaped steel fixing bracket 12, and consists of a first C-shaped steel support portion 13c which is a U-shaped plate body, and first mounting surface abutment portions 13a, 13b which are provided continuously from the upper part of the first C-shaped steel support portion 13c, and the first mounting surface abutment portions 13a, 13b each have two screw holes, and the first C-shaped steel support portion 13c has one bolt hole at the upper part of the front side and two bolt holes at the upper part of the back side. The first bolts 14B1, 14B2, 14B3 and the first nuts 14N1, 14N2, 14N3 serve as fixing means for fixing the first C-shaped steel fixing bracket 12 to the left end of the first C-shaped steel 11, and the first bolts 15B1, 15B2, 15B3 and the first nuts 15N1, 15N2, 15N3 serve as fixing means for fixing the first C-shaped steel fixing bracket 13 to the right end of the first C-shaped steel 11. The first screws 16a1, 16a2, 16b1, 16b2, 17a1, 17a2, 17b1, 17b2 serve as the first linear members of the present invention, and as fixing means for fixing the first C-shaped steel fixing brackets 12, 13 to the beams 2, 3. The fixing means for fixing the first C-shaped steel 11 to the beams 2 and 3 in this manner is a fixing means of a simple structure consisting of first C-shaped steel fixing brackets 12 and 13, first bolts 14B1, 15B1, etc., first nuts 14N1, 15N1, etc., first screws 16a1, 17a1, etc.

[0031] The first hanging members 18 and 19 each consist of a hook portion 18F and 19F, a hanging bolt 18B and 19B, a hanger portion 18H and 19H, and connecting nuts 18N1, 18N2, 18N3, 19N1, 19N2 and 19N3, and the hanging bolts 18B and 19B are both long fully threaded bolts, and the first hanging member 18 and the first hanging member 19 are the same. In the first hanging member 18, the hook portion 18F consists of a hook piece 18Fa and a connecting piece 18Fb continuing from the lower end of the hook piece 18Fa, and a bolt hole is provided in the connecting piece 18Fb, and the hanger portion 18H consists of a hanger piece 18Ha and a connecting piece 18Hb continuing from the upper end of the hanger piece 18Ha, and a bolt hole is provided in the connecting piece 18Hb. Similarly, in the first hanging member 19, the hook portion 19F consists of a hook piece 19Fa and a connecting piece 18Fb continuing from the lower end of the hook piece 19Fa, and a bolt hole is provided in the connecting piece 18Fb. The hanger portion 19H consists of a hanger piece 19Ha and a connecting piece 19Hb continuing from the upper end of the hanger piece 19Ha, and a bolt hole is provided in the connecting piece 19H.

[0032] [Second ceiling underlayment support member] As shown in Figures 7, 9, etc., the second ceiling substructure support member 20 comprises a second C-shaped steel 21, second C-shaped steel fixing brackets 22, 23, second bolts 24B1, 24B2, 24B3, 25B1, 25B2, 25B3, second nuts 24N1, 24N2, 24N3, 25N1, 25N2, 25N3, second screws 26a1, 26a2, 26b1, 26b2, 27a1, 27a2, 27b1, 27b2, and second hanging members 28, 29. In this case, the second ceiling substrate support member 20 has the same structure as the first ceiling substrate support member 10, and the second C-shaped steel 21, the second C-shaped steel fixing brackets 22, 23, the second bolts 24B1, 24B2, 24B3, 25B1, 25B2, 25B3, the second nuts 24N1, 24N2, 24N3, 25N1, 25N2, 25N3, the second screws 26a1, 26a2, 26b1, 26b2, 27a1, 27b2, 27b3, 27b4, 27b5, 27b6, 27b7, 27b8, 27b9, 27b10, 27b11, 27b12, 27b13, 27b14, 27b15, 27b16, 27b17, 27b18, 27b19, 27b210, 27b2211, 27b23, 27b24, 27b25, 27b26, 27b27, 27b28, 27b29, 27b310, 27b29, 27b211, 27b2212, 27b23, 27b24, 27b25, 27b26, 27b27, 27b28, 27b29, 27b311, 27b29, 27b212, 27b213, 27b2214, 27b23, 27b24, 27b25, 27b26, 27b27, 27 7a2, 27b1, 27b2 are the same as the first C-shaped steel 11, first C-shaped steel fixing brackets 12, 13, first bolts 14B1, 14B2, 14B3, 15B1, 15B2, 15B3, first nuts 14N1, 14N2, 14N3, 15N1, 15N2, 15N3, first screws 16a1, 16a2, 16b1, 16b2, 17a1, 17a2, 17b1, 17b2 of the first ceiling substructure support member 10, respectively. Furthermore, the dimensions of the second C-shaped steel 21 are the same as those of the first C-shaped steel 11, and the height (length in the Z direction) of the second C-shaped steel 21 is 50 mm to 200 mm, the width (length in the Y direction) is 30 mm to 100 mm, and the length in the X direction is the same as the spacing between beams 2 and 3 (the distance between the opposing surfaces of beams 2 and 3). The fixing means for fixing the second C-shaped steel 21 to the beams 2 and 3 is also a fixing means of a simple structure consisting of second C-shaped steel fixing fittings 22 and 23, second bolts 24B1, 25B1, etc., second nuts 24N1, 25N1, etc., second screws 26a1, 27a1, etc., similar to the fixing means for the second C-shaped steel 11.

[0033] The second hanging members 28, 29 each consist of a hook portion 28F, 29F, a hanging bolt 28B, 29B, a hanger portion 28H, 29H and a connecting nut 28N1, 28N2, 28N3, 29N1, 29N2, 29N3, the hook portions 28F, 29F each consist of a hook piece 28Fa, 29Fa and a connecting piece 28Fb, 29Fb continuing from the lower end of the hook piece 28Fa, 29Fa, the connecting piece 28Fb, 29Fb having a bolt hole, and the hanger portions 28H, 29H each consist of a hanger piece 28Ha, 29Ha and a connecting piece 28Hb, 29Hb continuing from the upper end of the hanger piece 28Ha, 29Ha, the connecting piece 28Hb, 29Hb having a bolt hole. In this case, the second hanging members 28, 29 of the second ceiling substrate support member 20 have the same structure as the first hanging members 18, 19 of the first ceiling substrate support member 10, and in the second hanging members 28, 29, the hook portions 28F, 29F, the hanging bolts 28B, 29B, and the hanger portions 28H, 29H are the same as the hook portions 18F, 19F, the hanging bolts 18B, 19B, and the hanger portions 18H, 19H of the first hanging members 18, 19, respectively. The hook piece 28Fa and the connecting piece 28Fb of the hook portions 18F and 19F are the same as the hook piece 18Fa and the connecting piece 18Fb of the hook portions 18F and 19F, the hanger piece 28Ha and the connecting piece 28Hb of the hanger portion 28H are the same as the hanger piece 18Ha and the connecting piece 18Hb of the hanger portion 18H, and the connecting nuts 28N1, 28N2, 28N3, 29N1, 29N2, and 29N3 are the same as the connecting nuts 18N1, 18N2, 18N3, 19N1, 19N2, and 19N3.

[0034] [Ceiling underlayment] The ceiling underlayment material CM has a first soffit support NB1, a second soffit support NB2 and soffits nb1 and nb2. The first sill support NB1 and the second sill support NB2 are both steel channel materials or lipped channel materials, with a height (length in the Z direction) of 19mm to 40mm, a width (length in the Y direction) of 10mm to 20mm, and a length (length in the X direction) of 1m to 5m. The first siding support NB1 is attached by being fitted into the hanger portions 18H, 19H (hanger pieces 18Ha, 19Ha) of the first hanging members 18, 19 of the first ceiling base material support member 10. The second sill support NB2 is attached by being fitted into the hanger portions 28H, 29H (hanger pieces 28Ha, 29Ha) of the second hanging members 28, 29 of the second ceiling base material support member 20. In addition, the rough frames nb1 and nb2 are both steel lipped channel materials, with a height (length in the Z direction) of 19mm to 25mm, a width (length in the Y direction) of 25mm to 50mm, and a length (length in the X direction) of 1m to 5m. The siding members nb1 and nb2 are attached in parallel to the undersides of the first siding support NB1 and the second siding support NB2 with dedicated clips (not shown) at a fixed interval (for example, 150 mm to 400 mm).

[0035] [How to install the ceiling base] The ceiling substrate 1 is attached in the order of the first ceiling substrate support member 10, the second ceiling substrate support member 20, and the ceiling substrate CM. First, the installation of the first ceiling substrate support member 10 will be described. First, the first C-beam fixing brackets 12 and 13 are attached to the first C-beam 11 . Specifically, the first C-shaped steel support portion 12c of the first C-shaped steel fixing bracket 12 is fitted into the left end portion of the first C-shaped steel 11, and the first bolts 14B1, 14B2, 14B3 are inserted into the bolt holes of the first C-shaped steel support portion 12c and the bolt holes at the left end portion of the first C-shaped steel 11, and the first nuts 14N1, 14N2, 14N3 are screwed onto them, thereby fixing the first C-shaped steel fixing bracket 12 to the left end portion of the first C-shaped steel 11. Similarly, the first C-shaped steel support portion 13c of the first C-shaped steel fixing bracket 13 is fitted into the right end portion of the first C-shaped steel 11, and the first bolts 15B1, 15B2, 15B3 are inserted into the bolt holes of the first C-shaped steel support portion 13c and the bolt holes at the right end portion of the first C-shaped steel 11, and the first nuts 15N1, 15N2, 15N3 are screwed onto them, thereby fixing the first C-shaped steel fixing bracket 13 to the right end portion of the first C-shaped steel 11.

[0036] Next, the first C-shaped steel fixing brackets 12 and 13 are attached to the opposing surfaces of the beams 2 and 3 that will become the mounting surfaces. Specifically, the first screws 16a1, 16a2 are inserted into the screw holes of the first mounting surface abutment portion 12a of the first C-shaped steel fixing bracket 12 and screwed into the right side surface, which will be the mounting surface of the beam 2, thereby fixing the first mounting surface abutment portion 12a to the right side surface (mounting surface) of the beam 2, and the first screws 16b1, 16b2 are inserted into the screw holes of the first mounting surface abutment portion 12b of the first C-shaped steel fixing bracket 12 and screwed into the right side surface (mounting surface) of the beam 2, thereby fixing the first mounting surface abutment portion 12b to the right side surface (mounting surface) of the beam 2, thereby fixing the left end of the first C-shaped steel 11 to the right side surface (mounting surface) of the beam 2. Similarly, the first screws 17a1 and 17a2 are inserted into the screw holes of the first mounting surface abutment portion 13a of the first C-shaped steel fixing bracket 13 and screwed into the left side surface which becomes the mounting surface of the beam 3, fixing the first mounting surface abutment portion 13a to the left side surface (mounting surface) of the beam 3, and the first screws 17b1 and 17b2 are inserted into the screw holes of the first mounting surface abutment portion 17b of the first C-shaped steel fixing bracket 17 and screwed into the left side surface which becomes the mounting surface of the beam 3, fixing the first mounting surface abutment portion 17b to the left side surface (mounting surface) of the beam 3, thereby fixing the right end of the first C-shaped steel 11 to the left side surface (mounting surface) of the beam 3. In this way, the first C-shaped steel 11 can be easily fixed to the beams 2 and 3 simply by fixing the first C-shaped steel fixing brackets 12 and 13 to the first C-shaped steel 11 using the first bolts 14B1, 15B1, etc., the first nuts 14N1, 15N1, etc., and then fixing the first C-shaped steel fixing brackets 12 and 13 to the beams 2 and 3 using the first screws 16a1, 17a1, etc.

[0037] Next, the first suspending members 18 and 19 are suspended from the vicinity of the left and right ends of the first C-beam 11. Specifically, in the first hanging member 18, the upper part of the hanging bolt 18B is inserted into the bolt hole of the connecting piece 18Fb of the hook portion 18F, a connecting nut 18N1 is screwed onto the bolt 18B protruding upward from the connecting piece 18Fb, the lower part of the hanging bolt 18B with the connecting nut 18N2 screwed onto it is inserted into the bolt hole of the connecting piece 18Hb of the hanger portion 18H, and a connecting nut 18N3 is screwed onto the bolt 18B protruding downward from the connecting piece 18Hb, and the connecting nuts 18N2 and 18N3 sandwich the connecting piece 18Hb from above and below to fix the lower part of the hanging bolt 18B to the connecting piece 18Hb, thereby assembling the first hanging member 18 which connects the hook portion 18F, the hanging bolt 18B, and the hanger portion 18H. Thereafter, the upper end of the hook piece 18Fa is hooked and engaged with the vicinity of the left end of the lip portion 11r1 of the first C-shaped steel 11, and the first suspending member 18 is suspended from the vicinity of the left end of the first C-shaped steel 11. Similarly, in the first hanging member 19, the upper part of the hanging bolt 19B is inserted into the bolt hole of the connecting piece 19Fb of the hook portion 19F, a connecting nut 19N1 is screwed onto the bolt 19B protruding upward from the connecting piece 19Fb, the lower part of the hanging bolt 19B with the connecting nut 19N2 screwed onto it is inserted into the bolt hole of the connecting piece 19Hb of the hanger portion 19H, and a connecting nut 19N3 is screwed onto the bolt 19B protruding downward from the connecting piece 19Hb, and the connecting nuts 19N2 and 19N3 sandwich the connecting piece 19Hb from above and below to fix the lower part of the hanging bolt 19B to the connecting piece 19Hb, thereby assembling the first hanging member 19 which connects the hook portion 19F, the hanging bolt 19B, and the hanger portion 19H. Thereafter, the upper end of the hook piece 19Fa is hooked and engaged with the vicinity of the right end of the lip portion 11r1 of the first C-shaped beam 11, and the first suspending member 19 is suspended from the vicinity of the right end of the first C-shaped beam 11.

[0038] Next, the installation of the second ceiling substrate support member 20 will be explained. The installation of the second ceiling substrate support member 20 is the same as the installation of the first ceiling substrate support member 10. First, the second C-beam fixing metal fittings 22 and 23 are attached to the second C-beam 21. Specifically, in the same way as fixing the first C-shaped steel fixing bracket 12 to the left end of the first C-shaped steel 11, the second C-shaped steel fixing bracket 22 is fixed to the left end of the second C-shaped steel 21 using second bolts 24B1, 24B2, 24B3 and first nuts 24N1, 24N2, 24N3. In addition, in the same way as fixing the first C-shaped steel fixing bracket 13 to the right end of the first C-shaped steel 11, the second C-shaped steel fixing bracket 23 is fixed to the right end of the second C-shaped steel 21 using the second bolts 25B1, 25B2, 25B3 and the first nuts 25N1, 25N2, 25N3. Next, the second C-shaped steel fixing brackets 22 and 23 are attached to the opposing surfaces of the beams 2 and 3 that will become the mounting surfaces. Specifically, in the same way as the left end of the first C-shaped steel 11 is attached and fixed to the right side surface (attachment surface) of the beam 2, the second attachment surface abutment portion 22a of the second C-shaped steel fixing bracket 22 is fixed to the right side surface (attachment surface) of the beam 2 with the second screws 26a1 and 26a2, and the second attachment surface abutment portion 22b of the second C-shaped steel fixing bracket 22 is fixed to the right side surface (attachment surface) of the beam 2 with the second screws 26b1 and 26b2, thereby attaching and fixing the left end of the second C-shaped steel 21 to the right side surface (attachment surface) of the beam 2. In addition, in the same way as attaching and fixing the right end of the first C-shaped steel 11 to the left side surface (mounting surface) of the beam 3, the second mounting surface abutment portion 23a of the second C-shaped steel fixing bracket 23 is fixed to the left side surface (mounting surface) of the beam 3 with second screws 27a1 and 27a2, and the second mounting surface abutment portion 27b of the second C-shaped steel fixing bracket 27 is fixed to the left side surface (mounting surface) of the beam 3 with second screws 27b1 and 27b2, thereby attaching and fixing the right end of the second C-shaped steel 21 to the left side surface (mounting surface) of the beam 3. In this case, the second C-shaped steel 21 of the second ceiling substructure support member 20 is attached to the beams 2, 3 parallel to the first C-shaped steel 11, with a certain distance (for example, 500 mm to 1500 mm) between it and the first C-shaped steel 11 of the first ceiling substructure support member 10 in the front-to-back direction (Y direction). In this way, the second C-shaped steel 21 can be easily fixed to the beams 2 and 3 simply by fixing the second C-shaped steel fixing brackets 22 and 23 to the second C-shaped steel 21 using the second bolts 24B1, 25B1, etc., the second nuts 24N1, 25N1, etc., and fixing the second C-shaped steel fixing brackets 22 and 23 to the beams 2 and 3 using the second screws 26a1, 27a1, etc.

[0039] Next, in the same manner as suspending the first suspending members 18, 19 from the vicinity of the left and right ends of the first C-shaped steel 11, the second suspending members 28, 29 are suspended from the vicinity of the left and right ends of the second C-shaped steel 21. Specifically, in the same manner as assembling the first hanging member 28, the second hanging member 18 is assembled by connecting the hook portion 28F, the hanging bolt 28B, and the hanger portion 28H by screwing the joining nuts 28N1, 28N2, and 28N3 onto the hanging bolt 28B, and the upper end of the hook piece 28Fa is hooked and engaged near the left end of the lip portion 21r1 of the second C-shaped steel 21, and the second hanging member 28 is hung from near the left end of the second C-shaped steel 21. In addition, in the same manner as assembling the first hanging member 19, the second hanging member 29 is assembled by connecting the hook portion 29F, the hanging bolt 29B, and the hanger portion 29H by screwing the joining nuts 29N1, 29N2, and 29N3 onto the hanging bolt 29B, and the upper end of the hook piece 29Fa is hooked and engaged near the left end of the lip portion 21r1 of the second C-shaped steel 21, and the second hanging member 29 is hung from near the right end of the second C-shaped steel 21. In this case, the positions of the second hanging members 28, 29 in the left-right direction (X direction) are set to be the same as the positions of the first hanging members 18, 19 in the left-right direction (X direction).

[0040] Next, the ceiling base material CM is attached to the first ceiling base material support member 10 and the second ceiling base material support member 20. Specifically, the left side of the first sill support NB1 is fitted into the recess of the hanger portion 18H (hanger piece 18Ha) of the first hanging member 18, and the right side of the first sill support NB1 is fitted into the recess of the hanger portion 19H (hanger piece 19Ha) of the first hanging member 19, and the first sill support NB1 is attached to the lower end of the first hanging members 18, 19. As a result, the first sill support NB1 is suspended from the first C-shaped steel beam 11 by the first suspension members 18, 19. Similarly, the left side of the second sill support NB2 is fitted into the recess of the hanger portion 28H (hanger piece 28Ha) of the second hanging member 28, and the right side of the second sill support NB2 is fitted into the recess of the hanger portion 29H (hanger piece 29Ha) of the second hanging member 29, and the second sill support NB2 is attached to the lower end of the second hanging members 28, 19. As a result, the second sill support NB2 is suspended from the second C-shaped steel beam 21 by the second suspension members 28, 29. Finally, using special clips (not shown), attach the siding nb1 to the underside of the left side of the first siding support NB1 and the second siding support NB2, attach the siding nb2 to the underside of the right side of the first siding support NB1 and the second siding support NB2, and if necessary, attach other sidings between the siding nb1 and siding nb2 on the underside of the first siding support NB1 and the second siding support NB2. In this case, the sills nb1, nb2, etc. (including other sills installed between the sills nb1 and nb2) are installed parallel to each other at a certain interval (for example, 150 mm to 400 mm).

[0041] In this manner, the ceiling substrate 1 comprising the first ceiling substrate support member 10, the second ceiling substrate support member 20 and the ceiling substrate CM is attached to the beams 2, 3. After this, ceiling boards CB are attached to the undersides of the rough joists nb1, nb2, etc., and the ceiling between beams 2 and 3 is completed. Furthermore, the C-shaped steel of the present invention (first C-shaped steel 11, second C-shaped steel 21) is not limited to being attached to a pair of opposing beams 2, 3, but may also be attached to a pair of opposing columns, or an opposing beam and column. Furthermore, the suspension member of the present invention is not limited to one having hook portions 18F, 19F (hook portions 28F, 29F) like the first suspension members 18, 19 (second suspension members 28, 29) and engaging with the lip portion 11r1 (21r1) of the first C-shaped steel 11 (second C-shaped steel 21), but may also be one that is fixed to the lip portion 11r1 (21r1) of the first C-shaped steel 11 (second C-shaped steel 21) by screws, clamps, etc.

[0042] [Wooden buildings] Figure 10 is an oblique view of the ceiling portion of a wooden building using the above-mentioned ceiling underlayment 1, Figure 11 is a plan view of the wooden building shown in Figure 10, Figure 12(a) is a front view of the wooden building shown in Figure 10, Figure 12(b) is a back view of the wooden building shown in Figure 10, Figure 13(a) is a CC cross-sectional view of Figure 11, Figure 13(b) is a DD cross-sectional view of Figure 11, Figure 13(c) is an EE cross-sectional view of Figure 11, and Figure 13(d) is an FF cross-sectional view of Figure 11. In the figure, 4 is a beam, 30 is the third ceiling base material support member, 31 is the third C-shaped steel, 32 and 33 are the third C-shaped steel fixing brackets, 38 and 39 are the third hanging member, 40 is the fourth ceiling base material support member, 41 is the fourth C-shaped steel, 42 and 43 are the fourth C-shaped steel fixing brackets, 48 ​​and 49 are the fourth hanging member, 50 is the fifth ceiling base material support member, 51 is the fifth C-shaped steel, 52 and 53 are the fifth C-shaped steel fixing brackets, 58 and 59 are the fifth hanging member, 60 is the sixth ceiling base material support member, 61 is the sixth C-shaped steel, 62 and 63 are the sixth C-shaped steel fixing brackets, 68 and 69 are the sixth hanging member, and 70 is the fourth 7 is a ceiling underlayment support member, 71 is 7th C-shaped steel, 72 and 73 are 7th C-shaped steel fixing brackets, 78 and 79 are 7th hanging member, 80 is the 8th ceiling underlayment support member, 81 is 8th C-shaped steel, 82 and 83 are 8th C-shaped steel fixing brackets, 88 and 89 are 7th hanging member, 100 is a wooden building, NB3 is the 3rd joist support, NB4 is the 4th joist support, nb3, nb4 and nb5 are joists, and in each figure, X represents the left-right direction, Y represents the front-to-back direction, and Z represents the up-down direction, the ceiling board CB is represented by a two-dot chain line, and parts that are the same as those shown in Figures 1 to 9 are given the same symbols. As shown in the figure, the wooden building 100 includes beams 2, 3, and 4, a ceiling substrate arranged between these beams, and a ceiling board CB. Beam 4 is made of the same wooden material as beams 2 and 3, has the same rectangular cross section as beams 2 and 3, and is positioned opposite beam 3 and parallel to it at the same height. The ceiling substructure of the wooden building 100 includes a ceiling substructure 1 having a first ceiling substructure support member 10, a second ceiling substructure support member 20, and a ceiling substructure CM (first rafter support NB1, second rafter support NB2, rafters nb1, nb2), as well as a third ceiling substructure support member 30, a fourth ceiling substructure support member 40, a fifth ceiling substructure support member 50, a sixth ceiling substructure support member 60, a seventh ceiling substructure support member 70, an eighth ceiling substructure support member 80, a third rafter support NB3, a fourth rafter support NB4, rafters nb3, nb4, nb5.

[0043] The third ceiling foundation material support member 30 includes a third C-shaped steel 31, third C-shaped steel fixing fittings 32, 33, third bolts, third nuts, third screws (none of which are shown), and third hanging members 38, 39. The third C-shaped steel 31, the third C-shaped steel fixing brackets 32, 33, the third bolt, the third nut, and the third screw are the same as the first C-shaped steel 11, the first C-shaped steel fixing brackets 12, 13, the first bolt (14B1, etc.), the first nut (14N1, etc.), and the first screw (16a1, etc.) of the first ceiling substructure support member 10, respectively. Furthermore, the third hanging members 38, 39 are the same as the first hanging members 18, 19, and each consist of the same hook portion, hanging bolt, and hanger portion as the hook portion 18F, 19F, hanging bolt 18B, 19B, hanger portion 18H, 19H, and connecting nut 18N1, 18N2, 18N3, 19N1, 19N2, and 19N3. The fourth ceiling base material support member 40 includes a fourth C-shaped steel 41, fourth C-shaped steel fixing fittings 42, 43, fourth bolts, fourth nuts, fourth screws (none of which are shown), and fourth hanging members 48, 49. The fourth C-shaped steel 41, the fourth C-shaped steel fixing brackets 42, 43, the fourth bolt, the fourth nut, the fourth screw, and the fourth hanging members 48, 49 are the same as the first C-shaped steel 11, the first C-shaped steel fixing brackets 12, 13, the first bolt, the first nut, the first screw, and the first hanging members 18, 19 of the first ceiling substructure support member 10, respectively, and the fourth hanging members 48, 49 consist of the same hook portion, hanging bolt, and hanger portion as the first hanging members 18, 19.

[0044] The other fifth ceiling sub-material support member 50, sixth ceiling sub-material support member 60, seventh ceiling sub-material support member 70, and eighth ceiling sub-material support member 80 are the same as the first ceiling sub-material support member 10, as are the third ceiling sub-material support member 30 and the fourth ceiling sub-material support member 40. That is, the fifth ceiling substrate support member 50 includes a fifth C-shaped steel 51, fifth C-shaped steel fixing brackets 52, 53, fifth bolts, fifth nuts, fifth screws (none of which are shown), and fifth hanging members 58, 59; the sixth ceiling substrate support member 60 includes a sixth C-shaped steel 61, sixth C-shaped steel fixing brackets 62, 63, sixth bolts, sixth nuts, sixth screws (none of which are shown), and sixth hanging members 68, 69; and the seventh ceiling substrate support member 70 includes a seventh C-shaped steel 71, seventh C-shaped steel fixing brackets 72, 73, seventh bolts, seventh nuts, seventh screws (none of which are shown), and seventh hanging members 78, 79. The eighth ceiling substructure support member 80 comprises an eighth C-shaped steel 81, eighth C-shaped steel fixing brackets 82, 83, an eighth bolt, an eighth nut, an eighth screw (none of which are shown), and eighth hanging members 88, 89, which are the same as the first C-shaped steel 11, first C-shaped steel fixing brackets 12, 13, first bolt, first nut, first screw, and first hanging members 18, 19 of the first ceiling substructure support member 10, and the fifth hanging members 58, 59, sixth hanging members 68, 69, seventh hanging members 78, 79, and eighth hanging members 88, 89 each comprise the same hook portion, hanging bolt, and hanger portion as the first hanging members 18, 19.

[0045] The ceiling underlayment material of the wooden building 100 includes the ceiling underlayment material CM of the ceiling underlayment 1 (first sill support NB1, second sill support NB2, sills nb1, nb2), as well as the third sill support NB3, the fourth sill support NB4, sills nb3, nb4, and nb5. The third nobori-uke NB3 and the fourth nobori-uke NB4 are the same as the first nobori-uke NB1 and the second nobori-uke NB2, respectively. In addition, the sills nb3, nb4, and nb5 are the same as the sills nb1 and nb2, and like the sills nb1 and nb2, they are attached parallel to the undersides of the first sill support NB1, the second sill support NB2, the third sill support NB3, and the fourth sill support NB4 at a certain interval (for example, 150 mm to 400 mm) using special clips (not shown).

[0046] Here, the installation of the ceiling underlayment in the wooden building 100 will be described. First, in the same manner as in the installation of the ceiling substrate 1, the first ceiling substrate support member 10 and the second ceiling substrate support member 20 are installed between the beams 2 and 3. Similarly, a third ceiling base material support member 30 and a fourth ceiling base material support member 40 are attached between beams 2 and 3. Specifically, in the third ceiling substructure support member 30, the third C-shaped steel fixing brackets 32 and 33 are fixed to the third C-shaped steel 31 using a third bolt and a third nut, and the third C-shaped steel fixing brackets 32 and 33 are fixed to the beams 2 and 3 using a third screw. In addition, the upper ends of the hook pieces of the hook portions of each of the third hanging members 38, 39 are hooked and engaged near the left and right ends of the lower lip portion of the third C-shaped steel 31, and the third hanging members 38, 39 are hung from near the left and right ends of the third C-shaped steel 31. Similarly, in the fourth ceiling substructure support member 40, the fourth C-shaped steel fixing brackets 42 and 43 are fixed to the fourth C-shaped steel 41 with fourth bolts and fourth nuts, and the fourth C-shaped steel fixing brackets 42 and 43 are fixed to the beams 2 and 3 with fourth screws. In addition, the upper ends of the hook pieces of the hook portions of each of the fourth hanging members 48, 49 are hooked and engaged near the left and right ends of the lower lip portion of the fourth C-shaped steel 41, and the fourth hanging members 48, 49 are hung from near the left and right ends of the fourth C-shaped steel 41. In this case, from the front, the first C-shaped steel 11, the second C-shaped steel 21, the third C-shaped steel 31, and the fourth C-shaped steel 41 are fixed to the beams 2 and 3 at the same intervals. Furthermore, the left-right (X direction) positions of the third hanging members 38, 39 and the left-right (X direction) positions of the fourth hanging members 48, 49 are set to be the same as the left-right (X direction) positions of the first hanging members 18, 19 (second hanging members 28, 29).

[0047] Next, the fifth ceiling base material support member 50, the sixth ceiling base material support member 60, the seventh ceiling base material support member 70, and the eighth ceiling base material support member 80 are attached between the beams 3 and 4. Specifically, in the fifth ceiling substructure support member 50, the fifth C-shaped steel fixing brackets 52 and 53 are fixed to the fifth C-shaped steel 51 using the fifth bolt and fifth nut, and the fifth C-shaped steel fixing brackets 52 and 53 are fixed to the beams 3 and 4 using the fifth screw. In addition, the upper ends of the hook pieces of the hook portions of each of the fifth hanging members 58, 59 are hooked and engaged near the left and right ends of the lower lip portion of the fifth C-shaped steel 51, and the fifth hanging members 58, 59 are hung from near the left and right ends of the fifth C-shaped steel 51. Similarly, in the sixth ceiling substructure support member 60, the sixth C-shaped steel fixing brackets 62 and 63 are fixed to the sixth C-shaped steel 61 with sixth bolts and sixth nuts, and the sixth C-shaped steel fixing brackets 62 and 63 are fixed to the beams 3 and 4 with sixth screws. In addition, the upper ends of the hook pieces of the hook portions of each of the sixth hanging members 68, 69 are hooked and engaged near the left and right ends of the lower lip portion of the sixth C-shaped steel 61, and the sixth hanging members 68, 69 are hung from near the left and right ends of the sixth C-shaped steel 61. Similarly, in the 7th ceiling substructure support member 70, the 7th C-shaped steel fixing brackets 72 and 73 are fixed to the 7th C-shaped steel 71 with the 7th bolt and the 7th nut, and the 7th C-shaped steel fixing brackets 72 and 73 are fixed to the beams 3 and 4 with the 7th screw. In addition, the upper ends of the hook pieces of the hook portions of each of the seventh hanging members 78, 79 are hooked and engaged near the left and right ends of the lower lip portion of the seventh C-shaped steel 71, and the seventh hanging members 78, 79 are suspended from near the left and right ends of the seventh C-shaped steel 71. Similarly, in the 8th ceiling substructure support member 80, the 8th C-shaped steel fixing brackets 82 and 83 are fixed to the 8th C-shaped steel 81 with the 8th bolt and the 8th nut, and the 8th C-shaped steel fixing brackets 82 and 83 are fixed to the beams 3 and 4 with the 8th screw. In addition, the upper ends of the hook pieces of the hook portions of each of the eighth hanging members 88, 89 are hooked and engaged near the left and right ends of the lower lip portion of the eighth C-shaped steel 81, and the eighth hanging members 88, 89 are suspended from near the left and right ends of the eighth C-shaped steel 81.

[0048] In this case, from the front, the fifth C-shaped steel 51, the sixth C-shaped steel 61, the seventh C-shaped steel 71, and the eighth C-shaped steel 81 are fixed to the beams 3 and 4 at the same intervals. In addition, the Y and Z direction positions of the 5th C-shaped steel 51 are made the same as the Y and Z direction positions of the 1st C-shaped steel 11, the Y and Z direction positions of the 6th C-shaped steel 61 are made the same as the Y and Z direction positions of the 2nd C-shaped steel 21, the Y and Z direction positions of the 7th C-shaped steel 71 are made the same as the Y and Z direction positions of the 3rd C-shaped steel 31, and the Y and Z direction positions of the 8th C-shaped steel 81 are made the same as the Y and Z direction positions of the 4th C-shaped steel 41. Furthermore, the left-right (X-direction) positions of the fifth hanging members 58, 59, the left-right (X-direction) positions of the sixth hanging members 68, 69, the left-right (X-direction) positions of the seventh hanging members 78, 79, and the left-right (X-direction) positions of the eighth hanging members 88, 89 are all made the same.

[0049] Next, the ceiling base material is attached to the first ceiling base material support member 10 to the eighth ceiling base material support member 80. Specifically, the first sill support NB1 is fitted into the recesses of the hanger portions (hanger pieces) of the first hanging members 18, 19 and the fifth hanging members 58, 59, and the first sill support NB1 is attached to the lower ends of the first hanging members 18, 19 and the fifth hanging members 58, 59. This causes the first sill support NB1 to be suspended from the first C-shaped steel beam 11 and the fifth C-shaped steel beam 51. Similarly, the second sill support NB2 is attached to the lower ends of the second hanging members 28, 29 and the sixth hanging members 68, 69 and is suspended from the second C-shaped steel 21 and the second C-shaped steel 21, the third sill support NB3 is attached to the lower ends of the third hanging members 38, 39 and the seventh hanging members 78, 79 and is suspended from the third C-shaped steel 31 and the seventh C-shaped steel 71, and the fourth sill support NB4 is attached to the lower ends of the fourth hanging members 48, 49 and the eighth hanging members 88, 89 and is suspended from the fourth C-shaped steel 41 and the eighth C-shaped steel 81. Next, using special clips (not shown), the sills nb1, nb2, nb3, nb4, and nb5 are attached to the undersides of the first sill support NB1, the second sill support NB2, the third sill support NB3, and the fourth sill support NB4 in this order from left to right. In this case, the joists nb1 to nb5 are attached in parallel at regular intervals (for example, 150 mm to 400 mm). Finally, ceiling panels CB are attached to the underside of the rough joists nb1 to nb5, completing the ceiling between beams 2, 3, and 4.

[0050] As described above, the ceiling substrate 1 disposed between a pair of beams 2, 3 arranged opposite to each other includes the first ceiling substrate support member 10, the second ceiling substrate support member 20, and the ceiling substrate CM, and the first ceiling substrate support member 10 includes the first C-shaped steel 11, the first C-shaped steel fixing brackets 12, 13, the first bolts 14B1, 15B1, etc., the first nuts 14N1, 15N1, etc., the first screws 16a1, 17a1, etc., and the first hanging members 18, 19. The ceiling base material support member 20 includes a second C-shaped steel 21, second C-shaped steel fixing brackets 22, 23, second bolts 24B1, 25B1, etc., second nuts 24N1, 25N1, etc., second screws 26a1, 27a1, etc., and second hanging members 28, 29. The ceiling base material CM includes a first joist support NB1, a second joist support NB2, and joists nb1, nb2. The first C-shaped steel 1 is supported by first bolts 14B1, 15B1, etc., first nuts 14N1, 15N1, etc. 1 is fixed to the first C-shaped steel fixing brackets 12 and 13, the first C-shaped steel fixing brackets 12 and 13 are fixed to the beams 2 and 3 by the first screws 16a1 and 17a1, etc., the second C-shaped steel fixing brackets 22 and 23 are fixed to the second C-shaped steel 21 by the second bolts 24B1 and 25B1, etc. and the second nuts 24N1 and 25N1, etc., the second C-shaped steel fixing brackets 22 and 23 are fixed to the beams 2 and 3 by the second screws 26a1 and 27a1, etc., and the first joist support NB1 is the first hanging part Since the first and second joist supports NB1 and NB2 are suspended from the first C-shaped steel beam 11 by members 18 and 19, the second joist support NB2 is suspended from the second C-shaped steel beam 21 by second hanging members 28 and 29, and the joist supports nb1 and nb2 are attached to the first and second joist support NB1 and NB2, a ceiling underlayment with a simple structure can be installed in parts of a large wooden building that do not have upper floors, such as a warehouse, without significantly increasing the manufacturing and construction load or material costs. [Industrial Applicability]

[0051] The ceiling underlayment support member, ceiling underlayment, and ceiling underlayment structure of the present invention can be made into a simple structure without significantly increasing the manufacturing and construction burden and material costs, and can be used in areas of large wooden buildings such as warehouses that do not have upper floors. [Explanation of symbols]

[0052] 1 Ceiling underlayment 2, 3, 4 beams 10 First ceiling base support member 11 Type 1 C steel 11bf back part 11r1, 11r2 lip 12, 13 1st C type steel fixing bracket 12a, 12b, 13a, 13b 1st mounting surface contact part 12c, 13c 1st C type steel support part 14B1, 14B2, 14B3, 15B1, 15B2, 15B3 First bolt 14N1, 14N2, 14N3, 15N1, 15N2, 15N3 First nut 16a1, 16a2, 16b1, 16b2, 17a1, 17a2, 17b1, 17b2 1st Bis 18, 19 First hanging member 18F, 19F hook section 18Fa, 19Fa hook pieces 18Fb, 19Fb connection piece 18B, 19B Hanging bolts 18H, 19H hanger section 18Ha, 19Ha hanger pieces 18Hb, 19Hb connection piece 18N1, 18N2, 18N3, 19N1, 19N2, 19N3 Joint Nuts 20 Second ceiling base support member 21 2nd C type steel 21bf back part 21r1, 21r2 lip 22, 23 2nd C type steel fixing bracket 22a, 22b, 23a, 23b Second mounting surface abutment portion 22c, 23c 2nd C type steel support part 24B1, 24B2, 24B3, 25B1, 25B2, 25B3 Second bolt 24N1, 24N2, 24N3, 25N1, 25N2, 25N3 Second nut 26a1, 26a2, 26b1, 26b2, 27a1, 27a2, 27b1, 27b2 2nd screw 28, 29 Second hanging member 28F, 29F hook section 28Fa, 29Fa hook pieces 28Fb, 29Fb connection piece 28B, 29B Hanging bolts 28H, 29H hanger section 28Ha, 29Ha hanger pieces 28Hb, 29Hb connection piece 28N1, 28N2, 28N3, 29N1, 29N2, 29N3 Joint Nuts 30 Third ceiling base support member 31 Type 3 C steel 32, 33 3rd C type steel fixing bracket 38, 39 Third hanging member 40 Fourth ceiling base support member 41 No. 4C type steel 42, 43 No. 4 C type steel fixing bracket 48, 49 Fourth hanging member 50 5th ceiling underlayment support member 51 No. 5C type steel 52, 53 No. 5C type steel fixing bracket 58, 59 Fifth hanging member 60 No. 6 ceiling base support member 61 No. 6C type steel 62, 63 No. 6C type steel fixing bracket 68, 69 Sixth hanging member 70 No. 7 ceiling underlayment support member 71 No. 7C type steel 72, 73 No. 7C type steel fixing bracket 78, 79 Seventh suspension member 80 No. 8 ceiling underlayment support member 81 No. 8C type steel 82, 83 No. 8C type steel fixing bracket 88, 89 7th hanging member 100 Wooden buildings CB ceiling board CM ceiling underlayment NB1 First Noenuke NB2 Second Noenuke NB3 3rd Noenuke NB 4th Noenuke nb1, nb2, nb3, nb4, nb5 Noen

Claims

1. A metal long hanging member support member attached to a pair of wooden beams or columns arranged opposite each other so as to span the pair of beams or columns; a hanger member receiving member fixing means for fixing the longitudinal end portions of the hanger member receiving member to each of the pair of beams or columns; A plurality of metal hanging members whose upper ends are engaged with or fixed to the hanging member receiving material and whose lower ends are attached to a metal ceiling underlayment joist receiving member, and which are arranged at regular intervals along the longitudinal direction of the hanging member receiving material; A ceiling underlayment support member characterized by comprising:

2. The ceiling underlayment support member described in claim 1, characterized in that the hanging member support material is a C-shaped steel, and the hanging member support material fixing means comprises a C-shaped steel fixing bracket having an attachment surface abutment portion that abuts against the attachment surface to which the end of the C-shaped steel of the beam or column is attached and a C-shaped steel support portion that supports the end of the C-shaped steel, and a linear member that fixes the attachment surface abutment portion to the attachment surface of the beam or column.

3. The ceiling underlayment support member described in claim 2, characterized in that the hanging member comprises a hook portion that engages with the lip portion of the C-shaped steel, a hanger portion that supports the soffit support, and a hanging bolt whose upper end is connected to the hook portion and whose lower end is connected to the hanger portion.

4. A ceiling substructure having a metal ceiling substructure, a first ceiling substructure support member that supports the ceiling substructure, and a second ceiling substructure support member, The ceiling underlayment material is First and second sill supports arranged at regular intervals in one direction; A plurality of sidings are arranged at regular intervals in a direction perpendicular to the one direction and fixed to the first siding support and the second siding support, The first ceiling substrate support member is A long metal first hanging member support member is attached to a pair of wooden beams or pillars arranged opposite to each other so as to be hung across the pair of beams or pillars, and is arranged above the first soffit support and opposite to the first soffit support; a first hanging member receiving member fixing means for fixing longitudinal ends of the first hanging member receiving member to each of the pair of beams or columns; The first hanging member has an upper end engaged with or fixed to the first hanging member receiving material, and a lower end to which the first sill support is attached. The first hanging member is provided with a pair of metal first hanging members arranged at regular intervals along the longitudinal direction of the first hanging member receiving material. The second ceiling substrate support member is A long second hanging member support member made of metal is attached to a pair of wooden beams or pillars arranged opposite to each other so as to be hung across the pair of beams or pillars, and is arranged above the second soffit support and opposite to the second soffit support; a second hanging member receiving member fixing means for fixing the longitudinal end portions of the second hanging member receiving member to each of the pair of beams or columns; A pair of metal second hanging members whose upper ends are engaged with or fixed to the second hanging member receiving material and whose lower ends are attached to the second sill receiving material, and which are arranged at regular intervals along the longitudinal direction of the second hanging member receiving material; A ceiling underlayment characterized by being equipped with:

5. The ceiling substructure described in claim 4, characterized in that the first hanging member support material is a first C-shaped steel, and the first hanging member support material fixing means comprises a first C-shaped steel fixing bracket having a first mounting surface abutment portion that abuts against the mounting surface of the beam or column to which the end of the first C-shaped steel is attached and a first C-shaped steel support portion that supports the end of the first C-shaped steel, and a first linear member that fixes the first mounting surface abutment portion to the mounting surface of the beam or column.

6. The ceiling substructure described in claim 4, characterized in that the second hanging member support material is a second C-shaped steel, and the second hanging member support fixing means comprises a second C-shaped steel fixing bracket having a second mounting surface abutment portion that abuts against the surface of the beam or column to which the end of the second C-shaped steel is attached and a second C-shaped steel support portion that supports the end of the second C-shaped steel, and a second linear member that fixes the second mounting surface abutment portion to the mounting surface of the beam or column.

7. The ceiling substructure described in claim 5, characterized in that the first hanging member comprises a hook portion that engages with the lip of the first C-shaped steel, a hanger portion that supports the first soffit support, and a hanging bolt whose upper end is connected to the hook portion and whose lower end is connected to the hanger portion.

8. The ceiling substructure described in claim 6, characterized in that the second hanging member comprises a hook portion that engages with the lip portion of the second C-shaped steel, a hanger portion that supports the second soffit support, and a hanging bolt whose upper end is connected to the hook portion and whose lower end is connected to the hanger portion.

9. A ceiling substructure in which a metal ceiling substructure is supported by a first ceiling substructure support member and a second ceiling substructure support member, The ceiling underlayment material includes a first joist support, a second joist support, and a plurality of joists; The first ceiling base member support member includes a plurality of elongated first hanging member receiving members made of metal, first hanging member receiving member fixing means, and a pair of first hanging members made of metal, The first hanging member support is disposed so as to span a pair of wooden beams or pillars disposed opposite each other, and longitudinal ends of the first hanging member support are fixed to each of the pair of beams or pillars by the first hanging member support fixing means, The upper end of the first hanging member is engaged with or fixed to the first hanging member receiving member, The first sill support is disposed below the first hanging member support material so as to face the first hanging member support material and is attached to the lower end of the first hanging member, The second ceiling base member support member includes a long metal second hanging member receiving member, a second hanging member receiving member fixing means, and a pair of metal second hanging members, The second hanging member support is disposed so as to be hung across the pair of beams or columns at a fixed interval from the first hanging member support, and longitudinal ends of the second hanging member support are fixed to each of the pair of beams or columns by the second hanging member support fixing means, The upper end of the second hanging member is engaged with or fixed to the second hanging member receiving member, The second sill support is disposed below the second hanging member support material so as to face the second hanging member support material and is attached to the lower end of the second hanging member, A ceiling substructure characterized in that each of the multiple soffits is arranged at regular intervals and fixed to the first soffit support and the second soffit support in an intersecting manner.

10. A wooden building comprising a pair of wooden beams or pillars arranged opposite to each other, a metal ceiling substructure and a first ceiling substructure support member that supports the ceiling substructure, a ceiling substructure having a second ceiling substructure support member, and ceiling panels that are attached to the ceiling substructure, The ceiling underlayment material is First and second sill supports arranged at regular intervals in one direction; A plurality of sidings are arranged at regular intervals in a direction perpendicular to the one direction and fixed to the first siding support and the second siding support, The first ceiling substrate support member is A long metal first hanging member support member is attached to a pair of wooden beams or pillars arranged opposite to each other so as to be hung across the pair of beams or pillars, and is arranged above the first soffit support and opposite to the first soffit support; a first hanging member receiving member fixing means for fixing longitudinal ends of the first hanging member receiving member to each of the pair of beams or columns; The first hanging member has an upper end engaged with or fixed to the first hanging member receiving material, and a lower end to which the first sill support is attached. The first hanging member is provided with a pair of metal first hanging members arranged at regular intervals along the longitudinal direction of the first hanging member receiving material. The second ceiling substrate support member is A long second hanging member support member made of metal is attached to a pair of wooden beams or pillars arranged opposite to each other so as to be hung across the pair of beams or pillars, and is arranged above the second soffit support and opposite to the second soffit support; a second hanging member receiving member fixing means for fixing the longitudinal end portions of the second hanging member receiving member to each of the pair of beams or columns; A pair of metal second hanging members whose upper ends are engaged with or fixed to the second hanging member receiving material and whose lower ends are attached to the second sill receiving material, and which are arranged at regular intervals along the longitudinal direction of the second hanging member receiving material; A wooden building characterized by having:

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