An A-frame, an L-shaped roof, a building, and a method

Abstract

An A-frame 35 for an L-shaped roof comprising a hip beam 46, a valley beam 48, a hip tenon 50 coupled to the hip beam at the apex, a valley tenon 52 coupled to the valley beam at the apex and a connec

Description

FIELD [01 ] The subject-matter of the present disclosure relates to an A-frame for an L-shaped roof, an L-shaped roof, a building, and a method of assembling an A-frame of a hip and valley of an L-shaped roof. BACKGROUND

[02] With reference to Figure 1 A, a roof 10 may be L-shaped. To form the L-shape, the roof 10 includes a hip 12 and a valley 14. A hip is a term used to describe sloping line at a junction of two roof surfaces where an obtuse angle is formed. A valley is a term used to describe a sloping line at a junction of two roof surfaces where an acute angle is formed.

[03] Typically, such a roof includes a ridge beam 16, hip beams and valley beams. The hip and valley beams extend between the ridge beam 16 and a wall beam 18. Rafters 20 may be provided between the hip and valley beams and the wall beams 18.

[04] The prior art version in Figure 1A works well when wall beams 18 are equal length and the ridge beam 16 is level.

[05] With reference to Figure 1B, in some cases, a rear wall beam 18 and a front wall beam 18 may not be equal. To keep the ridge beam 16 level, the pitch of the roof may be variable. In such cases, connecting hip and valley beams to either side of the ridge beam 16 may be difficult and can result in a gap in the roof. As an example, traditionally, to avoid difficulties in such cases where the wall beams 18 are not equal in length, the ridge beams 16 tend to be set at different heights (known as a drop ridge) to keep the roof pitches equal across all roof planes..

[06] It is an aim of the subject-matter of the present disclosure to improve on the prior art. SUMMARY

[07] According to a first aspect of the present invention, there is provided an A-frame for a hip and valley of an L-shaped roof, the A-frame comprising: a hip beam; a valley beam; a hip tenon adaptor coupled to an end of the hip beam at an apex of the A-frame; a valley tenon adaptor couple to an end of the valley beam at the apex of the A-frame; and a connector, wherein the hip and valley tenon adaptor each comprise a connection formation, and the connector comprises a hip flange and a valley flange, the hip and valley flanges each comprising a complimentary connection formation for engaging the connection formation of the respective hip and valley tenon adaptors to permit substantially vertical relative movements of the respective ends of the hip and valley beams, and to constrain substantially horizontal relative movements of the respective ends of the hip and valley beams, in-use, during installation. The A-frame may be for the hip and valley extended either side of a ridge line at an elbow of the L-shaped roof.

[08] Advantageously, such a configuration enables a ridge of the roof to remain at the same level regardless of wall beam configurations, in other words where the pitch of the roofs are variable.

[09] In an embodiment, the connection formation of each of the hip and valley tenon adaptors comprises a serrated surface having a plurality of serrations extending substantially vertically, in-use.

[10] In an embodiment, the complimentary connection formation of each of the hip and valley flanges comprises complimentary serrations extending substantially vertically, in-use, for engaging the serrations of the respective hip and valley tenon adaptors.

[11] In an embodiment, the connector comprises a first bracket and a second bracket, the first and the brackets each comprising a connector plate connecting the first and second brackets together, the first bracket comprising the hip flange extending away from the connector plate of the first bracket, and the second bracket comprising the valley flange extending away from the connector plate of the second bracket.

[12] In an embodiment, the connector plate of each of the first and second brackets comprises a slot at a side of the respective hip and valley flange, wherein the slot extends substantially horizontally, in-use.

[13] In an embodiment, each connector plate further comprises a central bolt hole on an opposite side to the slot, wherein the central bolt hole is in line with a longitudinal axis of the slot.

[14] In an embodiment, each connector plate further comprises an upper bolt hole positioned above the central bolt hole, in-use, and a lower bolt hole positioned below the central bolt hole, in-use.

[15] In an embodiment, the first bracket and the second bracket are the same, and wherein the first bracket is rotated substantially half a rotation from the second bracket.

[16] In an embodiment, hip and valley tenon adaptors each comprises a stem and a fork bifurcating from the stem, the fork comprising a first prong and a second prong separated from the first prong by a separation distance configured to receive the respective hip and valley flange between the first and second prongs.

[17] In an embodiment, the hip beam and the valley beam each include a hollow enclosure having a track extending substantially longitudinally therewithin, wherein the track of each of the hip beam and the valley beam is dimensioned to receive the stem of the respective hip and valley tenon adaptor therewithin.

[18] In an embodiment, the hollow enclosure comprises an upper apex, a lower apex, and opposing rails extending substantially vertically, in-use, wherein the track comprises an upper track on the upper apex and a lower track on the lower apex.

[19] In an embodiment, the F-frame further comprises opposing first and second flange beams each comprising at least one flange for receiving roof panels, wherein the first and second flange beams are connected to the upper apex and the lower apex, wherein the at least one flange is inclined, in-use.

[20] In an embodiment, the stem of each of the hip tenon adaptor and the valley tenon adaptor comprises a serrated surface.

[21] In an embodiment, the A-frame further comprises a hip tenon and a valley tenon, the hip tenon for connecting the hip beam to a first wall connector and the valley tenon for connecting the valley beam to a second wall connector.

[22] According to an aspect of the present invention, there is provided an L-shaped roof comprising: an L-shaped front wall structure having an elbow joint between opposing front wall beams; a L-shaped rear wall structure having an elbow join between opposing rear wall beams; a plurality of rafter A-frames connected between the L-shaped front and rear wall structures one each side of the respective elbow joints; and the A-frame of any preceding claim extending between the respective elbow joints of the front and rear wall beams to form a hip and a valley.

[23] In an embodiment, the L-shaped roof further comprises opposing A-frame sections extending between the hip beam and the opposing rear wall beams, wherein the opposing A-frame sections each have a rear beam, a front beam, and a connector connecting the front beam and the rear beam at an apex of the A-frame section, wherein the front beam has a different length than the rear beam.

[24] In an embodiment, the L-shaped roof further comprises opposing rafters extending between the hip beam of the A-frame and the respective opposing rear wall beams.

[25] According to an aspect of the present invention, there is provided a building comprising: a front wall; a rear wall opposing the front wall; and the L-shaped roof of any preceding aspect or embodiment, wherein the front wall beam is connected to the front wall and the rear wall beam is connected to the rear wall.

[26] According to an aspect of the present invention, there is provided a method of assembling an A-frame of a hip and a valley of an L-shaped roof, the method comprising: providing a hip beam, a valley beam, a hip tenon adaptor, a valley tenon adaptor, and a connector, wherein the hip and valley tenon adaptors each comprise a connection formation, and the connector comprises a hip flange and a valley flange, the hip and valley flanges each comprising a complimentary connection formation for engaging the connection formation of the respective hip and valley tenon adaptors; attaching the hip beam to an elbow of a rear wall plate using a hip tenon; attaching the valley beam to an elbow of a front wall plate using a valley tenon; coupling the hip tenon adaptor to an end of the hip beam of an apex of the A-frame; coupling the valley tenon adaptor to an end of the valley beam at the apex of the A-frame; changing respective pitches of the hip and valley beams by sliding the connection formations of the hip and valley tenon adaptors against the complimentary connection formations of the respective hip and valley flanges; and securing the hip tenon adaptor to the hip flange and the valley tenon adaptor to the valley flange.

[27] These and other aspects of the present invention will be apparent from and elucidated with reference to the embodiment(s) described hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[28] The embodiments of the present inventions may be best understood with reference to the accompanying figures, in which:

[29] Figure 1A shows a perspective view of a typical L-shaped roof which is known from the prior art;

[30] Figure 1B shows a perspective view of another L-shaped prior art roof having wall beams of different lengths;

[31] Figure 2 shows a perspective view of a part of an L-shaped roof, according to one or more embodiments;

[32] Figure 3 shows a perspective view of an A-frame from the L-shaped roof from Figure 2, according to one or more embodiments;

[33] Figure 4 shows a perspective view of the A-frame from Figure 3 connected to wall beam of the L-shaped roof from Figure 3, according to one or more embodiments;

[34] Figure 5 shows a perspective view of the wall beam from Figure 4, according to one or more embodiments;

[35] Figure 6 shows a perspective view of the A-frame from Figure 3 extending between front and rear wall beams, according to one or more embodiments;

[36] Figure 7 shows a perspective view of a tenon adaptor and a tenon from Figure 4, according to one or more embodiments;

[37] Figure 8 shows a cross-sectional view of a hip beam of the A-frame from Figure 3, according to one or more embodiments;

[38] Figure 9 shows a cross-sectional view of a valley beam of the A-frame from Figure 3, according to one or more embodiments;

[39] Figure 10 shows a cross-sectional view of a roof panel and a rafter mounted to the hip beam from Figure 18, according to one or more embodiments;

[40] Figure 11 shows a perspective view of the rafter from Figure 10; [41 ] Figure 12 shows a perspective view of the rafter connected to the hip beam;

[42] Figure 13 shows a magnified perspective view of a connected between the rafter and the hip beam from Figure 12;

[43] Figure 14 shows a perspective view of the tenon adaptor from Figure 7, according to one or more embodiments;

[44] Figure 15 shows a perspective view of the tenon from Figure 7, according to one or more embodiments;

[45] Figure 16 shows a perspective view of an apex of the A-frame from Figure 3, according to one or more embodiments;

[46] Figure 17 shows a top view of the apex from Figure 16, according to one or more embodiments;

[47] Figure 18 shows a perspective view of half of the apex from Figure 16, according to one or more embodiments;

[48] Figure 19 shows an end view of a connector from the apex of Figure 16, according to one or more embodiments;

[49] Figure 20 shows first and second brackets from the connector of Figure 19, according to one or more embodiments; and

[50] Figure 21 shows a flow chart summarising a method of assembling an A-frame of an L-shaped roof, according to one or more embodiments. DESCRIPTION OF EMBODIMENTS [51 ] Various combinations of optional features have been described herein, and it will be appreciated that described features may be combined in any suitable combination. In particular, the features of any one example embodiment may be combined with features of any other embodiment, as appropriate, except where such combinations are mutually exclusive. Throughout this specification, the term “comprising” or “comprises” means including the component(s) specified but not to the exclusion of the presence of others.

[52] With reference to Figure 2, an L-shaped roof 30 according to one or more embodiments, includes an L-shaped front wall structure 32, an L-shaped rear wall structure 33. Each of the front and rear wall structures is provided in an L-shape by provision of respective elbow joints 34 joining adjacent wall beams. The L-shaped roof 30 also includes a plurality of rafter A-frames 36 connected between the L-shaped front and rear wall structures 32, 33, on each side of the elbow joints 34. An A-frame extends 35 between the respective elbow joints 34 of the front and rear wall structures 32, 33 to form a hip 12 and a valley 14.

[53] The rafter A-frames 36 may include the full rafter A-frames which are connected to each of the front and rear wall structures 32, 33. In addition, there are some rafter A-frames which are provided between the A-frame and the rear wall structure. Those may be called rafter A-frame sections. The rafter A-frames may each include a front beam 41 extending between an apex 40 and the front wall structure 32, and a rear beam 42 extending between the apex 40 and the rear wall structure 33. A connector 44 may be present at the apex 40 to connect the front and rear beams 41, 42. The apex 40 may be positioned, in-use, at a ridge line of the roof. It should be appreciated that the L-shaped roof of Figure 2 does not include a ridge beam. The terms “front” and “rear” may be used interchangeably depending on the orientation of the building. The front beam 41 and the rear beam 42 may have different lengths. The shorter of the front and rear beams 41,42, is connected to the A-frame 35. The longer of the front and rear beams 41, 42, is connected to the rear wall structure 33.

[54] There may also be some rafters 38 which are not shaped as A-frames since they do not pass the ridge line of the roof.

[55] With reference to Figure 3, the A-frame 35 includes a hip beam 46, a valley beam 48, hip tenon adaptors 50, valley tenon adaptors 52, a connector 54, and tenons 56.

[56] The hip beam 46 is a beam at a hip line of the L-shaped roof. The valley beam 48 is a beam at a valley line of the L-shaped roof.

[57] The connector 54 is provided at the apex 40. One of the hip tenon adaptors 50 is coupled to an end of the hip beam 46 at the apex of the roof, and is connected to the connector 54. Similarly, one of the valley tenon adaptors 52 is coupled to an end of the valley beam 48 at the apex of the roof, and is connected to the connector 54.

[58] Another hip tenon adaptor 50 is connected to another end of the hip beam 46, and is connected to one of the tenons 56. Another valley tenon adaptor 52 is connected to another end of the valley beam 48, and is connected to one of the tenons 56.

[59] With reference to Figure 4, the tenons 56 are connected to a wall plate 58. The wall plate 58 is connected to the front or rear wall structure at the elbow between the wall beams.

[60] With reference to Figure 5, the wall plate 58 includes two connection flanges 60. Each connection flange 60 is attached to a wall beam of the rear wall structure 32. The connection of the flanges 60 to the wall beams may be achieved using screws. The wall plate 58 also includes a plate portion 62 for connecting to the tenon (Figure 4).

[61] With reference to Figure 6, a similar wall plate 64 is also attached to the front wall 32 structure at its elbow joint for connecting the tenon 56 to the front wall structure 32. The wall plates 58, 64, may also be called wall connectors.

[62] With reference to Figure 7, the valley beam 48 is shown together with a valley tenon adaptor 50 and a tenon 56. Screws 66 connect the tenon 56 to the respective wall plate (not shown). Screws, or bolts, 66 are also used to fixed the tenon 56 to the tenon adaptor 50, and to fix the tenon adaptor 50 to the valley beam 48. Those parts do not have screw or bolt holes in them until the parts are in-situ during assembly of the L-shaped roof. Instead, a workman may create the holes for the screws, or bolts, e.g. using a drill or the like.

[63] With reference to Figure 8, the hip beam 46 includes a hollow enclosure 68 including a track 70 extending substantially longitudinally along an inside of the hollow enclosure. The track 70 of the hip beam is dimensions to receive the hip tenon adaptor. As will become apparent with reference to Figure 10 below, it is a stem of the hip tenon adaptor that can be accommodated within the track 70.

[64] The hollow enclosure 68 comprises four primary portions. Those portions include an upper apex 72, a lower apex 74, and opposing rails 76 extending substantially vertically, in-use, between the upper apex 72 and the lower apex 74.

[65] The track 70 comprises an upper track and a lower track. The upper track is on an interior surface of the upper apex 72 and the lower track is on an interior surface of the lower apex 74. The upper and lower tracks each include opposing guide walls protruding substantially vertically, in-use, from the respective upper apex and lower apex.

[66] The hip beam may also include flange panels 78. The flange panels 78 have a substantially arcuate frame having a complimentary curvature as to the exterior surfaces of the upper apex 72 and the lower apex 74. In this way, the flange panels 78 may move circumferentially about a central axis of the hip beam 46 until they are at a suitable orientation, at which point they can be fixed to the upper apex 72 and / or lower apex 74 using screws 66, or bolts.

[67] The flange panels 78 include an upper flange 80 and a lower flange 82. The upper flange 80 includes a channel. The lower flange 82 also includes a channel. It will be appreciated that, since this is a hip beam 46, the upper and lower flanges 80, 82, are angled downwards. As described in more detail below, roof panels (not shown) extend downwards away from the hip beam 46 when connected to the upper flange 80.

[68] With reference to Figure 9, the valley beam 48 has the same construction as the hip beam 46 except the flange panels 78 are attached the opposite way around. In other words, the upper and lower flanges 80, 82, are angled upwards. In this way, roof panels are angled upwards away from the valley beam 48.

[69] With reference to Figure 10, the roof panel 150 includes a base panel 152 and a top panel 154. The base panel 152 sits on top of the channel 80. Figure X1 shows the roof panel assembled with the hip beam of Figure 8. The roof panel may also be equally assembled with the valley beam of Figure 9.

[70] With reference to Figures 11 to 13, the rafter 38 (also known as a jack rafter) may be connected to the hip beam 46 (or valley beam 48) using a rafter fixing plate 156. A fastener, e.g. a screw, may be used to connect the rafter fixing plate 156 to the upper flange 80. Additional fasteners, e.g. screws, may be used to connect the rafter fixing plate 156 to an upper surface of the rafter 38.

[71] With reference to Figure 14, the hip or valley tenon adaptor 50, 52. The hip and valley tenon adaptors 50, 52, are the same part. In this way, the terms may be used interchangeably with tenon adaptor. The tenon adaptor includes a stem 84 and a fork 86 bifurcating from the stem 84. The stem 84 is substantially straight and has serrations 88 on its exterior surface. The fork 86 includes two prongs forming a channel therebetween. The two prongs are substantially parallel and straight. The two prongs include serrations 88 on both exterior and interior surfaces, interior meaning within the channel and exterior meaning outside the channel. The serrations are arranged substantially vertically, in-use. The serrations may form a connection formation.

[72] With reference to Figure 15, the tenon 56 includes a flange 90. The flange is dimensioned to fit within the channel of the fork 86 (Figure 10). The flange 90 includes a serrated surface, having complimentary serrations 88 to the interior surface of the fork.

[73] The tenon 56 also includes a plate portion 92 for connecting to the wall connectors, or plates. The tenon 56 also includes fastener holes 94 for fasteners, e.g. screws or bolts, to connect the tenon to the wall plates.

[74] With reference to Figures 16 and 17, the connector 54 of the A-frame is shown in more detail. It can be seen from Figures 16 and 17 that the connector 54 includes a first bracket 96 and a second bracket 98.

[75] Figure 18 shows the connection of one of the first and second brackets 96, 98, to the respective tenon adaptor.

[76] With reference to Figures 19 and 20, the first bracket 96 and the second bracket 98 are the same.

[77] Each bracket 96, 98, includes a connector plate 100 and a flange 102 extending away from the connector plate 100. The flange 102 is called either a hip flange or a valley flange depending on whether the flange is coupled to the hip or valley beam via the tenon adaptor. The hip and valley flanges each comprise a complimentary connection formation for engaging the connection formation of the respective hip and valley tenon adaptors to permit substantially vertical relative movements of the respective ends of the hip and valley beams, and to constrain substantially horizontal relative movements of the respective ends of the hip and valley beams, in-use, during installation. The complimentary connection formation of each of the hip and valley flanges comprises complimentary serrations 88 extending substantially vertically, in-use, for engaging the serrations of the respective hip and valley tenon adaptors.

[78] The connector plates 100 have a substantially flat surface for enabling the first and second backets to be connected together. The connector plate 100 includes a slot 104 at a side of the flange 102. The slot extends substantially horizontally, in-use. The connector plate 100 also comprises a central bolt hole 106 on an opposite side to the slot 104. The central bolt hole 106 is in line with a longitudinal axis of the slot 104. The connector plate 100 also includes an upper bolt hole 107 and a lower bolt hole 108. The upper bolt hole 107 is positioned above the central bolt hole, in-use. The lower bolt hole 108 is positioned below the central bolt hole 106, in-use.

[79] To connect the first bracket 96 to the second bracket 98, the second bracket 98 is rotated half a rotation, or 180 degrees, relative to the first backet 96. In other words, the hip flange and the valley flange point away from one another, and both extend substantially vertically, in-use, whilst the connection plates 100 are abutting flush with one another.

[80] Bolts 66, or other fasteners, are inserted first through the central bolt hole 106 and the slot of the opposing bracket. In this way, the bracket can accommodate horizontal position tolerances in the roof. Next, bolts, or other fasteners, are inserted through the upper and lower bolt holes 107, 108.

[81] With reference to Figure 21, according to one or more embodiments, a method of assembling an A-frame of an L-shaped roof may be summarised as including the following steps: providing S500 a hip beam, a valley beam, a hip tenon adaptor, a valley tenon adaptor, and a connector, wherein the hip and valley tenon adaptors each comprise a connection formation, and the connector comprises a hip flange and a valley flange, the hip and valley flanges each comprising a complimentary connection formation for engaging the connection formation of the respective hip and valley tenon adaptors; attaching S502 the hip beam to an elbow of a rear wall plate using a hip tenon; attaching S504 the valley beam to an elbow of a front wall plate using a valley tenon; coupling S506 the hip tenon adaptor to an end of the hip beam of an apex of the A-frame; coupling S508 the valley tenon adaptor to an end of the valley beam at the apex of the A-frame; changing respective S510 pitches of the hip and valley beams by sliding the connection formations of the hip and valley tenon adaptors against the complimentary connection formations of the respective hip and valley flanges; and securing S512 the hip tenon adaptor to the hip 5 flange and the valley tenon adaptor to the valley flange.

[82] While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive; the invention is not limited to the disclosed embodiments.

[83] Other variations to the disclosed embodiments can be understood and effected by 10 those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. A single processor or other unit may fulfil the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different 15 dependent claims does not indicate that a combination of these measured cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope.

Claims

1. An A-frame for an L-shaped roof, the A-frame comprising:a hip beam;a valley beam;a hip tenon adaptor coupled to an end of the hip beam at an apex of the A-frame;a valley tenon adaptor couple to an end of the valley beam at the apex of the A-frame; anda connector,wherein the hip and valley tenon adaptor each comprise a connection formation, and the connector comprises a hip flange and a valley flange, the hip and valley flanges each comprising a complimentary connection formation for engaging the connection formation of the respective hip and valley tenon adaptors to permit substantially vertical relative movements of the respective ends of the hip and valley beams, and to constrain substantially horizontal relative movements of the respective ends of the hip and valley beams, in-use, during installation.

2. The A-frame of Claim 1, wherein the connection formation of each of the hip and valley tenon adaptors comprises a serrated surface having a plurality of serrations extending substantially vertically, in-use.

3. The A-frame of Claim 2, wherein the complimentary connection formation of each of the hip and valley flanges comprises complimentary serrations extending substantially vertically, in-use, for engaging the serrations of the respective hip and valley tenon adaptors.

4. The A-frame of any preceding claim, wherein the connector comprises a first bracket and a second bracket, the first and the brackets each comprising a connector plate connecting the first and second brackets together, the first bracket comprising the hip flange extending away from the connector plate of thefirst bracket, and the second bracket comprising the valley flange extending away from the connector plate of the second bracket.

5. The A-frame of Claim 4, wherein the connector plate of each of the first and second brackets comprises a slot at a side of the respective hip and valley flange, wherein the slot extends substantially horizontally, in-use.

6. The A-frame of Claim 5, wherein each connector plate further comprises a central bolt hole on an opposite side to the slot, wherein the central bolt hole is in line with a longitudinal axis of the slot.

7. The A-frame of Claim 6, wherein each connector plate further comprises an upper bolt hole positioned above the central bolt hole, in-use, and a lower bolt hole positioned below the central bolt hole, in-use.

8. The A-frame of any of Claims 4 to 6, wherein the first bracket and the second bracket are the same, and wherein the first bracket is rotated substantially half a rotation from the second bracket.

9. The A-frame of any preceding claim, wherein hip and valley tenon adaptors each comprises a stem and a fork bifurcating from the stem, the fork comprising a first prong and a second prong separated from the first prong by a separation distance configured to receive the respective hip and valley flange between the first and second prongs.

10. The A-frame of Claim 9, wherein the hip beam and the valley beam each include a hollow enclosure having a track extending substantially longitudinally therewithin, wherein the track of each of the hip beam and the valley beam is dimensioned to receive the stem of the respective hip and valley tenon adaptor therewithin.11 .The A-frame of Claim 10, wherein the hollow enclosure comprises an upper apex, a lower apex, and opposing rails extending substantially vertically, in-use,wherein the track comprises an upper track on the upper apex and a lower track on the lower apex.

12. The A-frame of any of Claims 9 to 11, wherein each of the hip beam and the valley beam comprises opposing first and second flange panels each comprising at least one channel for receiving roof panels, wherein the first and second flange beams are connected to the upper apex and the lower apex.

13. The A-frame of any of Claims 9 to 12, wherein the stem of each of the hip tenon adaptor and the valley tenon adaptor comprises a serrated surface.

14. The A-frame of any preceding claim, further comprising a hip tenon and a valley tenon, the hip tenon for connecting the hip beam to a first wall connector and the valley tenon for connecting the valley beam to a second wall connector.

15. An L-shaped roof comprising:an L-shaped front wall structure having an elbow joint between opposing front wall beams;a L-shaped rear wall structure having an elbow join between opposing rear wall beams;a plurality of rafter A-frames connected between the L-shaped front and rear wall structures one each side of the respective elbow joints; andthe A-frame of any preceding claim extending between the respective elbow joints of the front and rear wall beams to form a hip and a valley.

16. The L-shaped roof of Claim 15, further comprising opposing A-frame sections extending between the hip beam and the opposing rear wall beams, wherein the opposing A-frame sections each have a rear beam, a front beam, and a connector connecting the front beam and the rear beam at an apex of the A-frame section, wherein the front beam has a different length than the rear beam.

17. The L-shaped roof of Claim 15 or Claim 16, further comprising opposing rafters extending between the hip beam of the A-frame and the respective opposing rear wall beams.

18. A building comprising:a front wall;a rear wall opposing the front wall; andthe L-shaped roof of any of Claims 15 to 17, wherein the front wall beam is connected to the front wall and the rear wall beam is connected to the rear wall.

19. A method of assembling an A-frame of an L-shaped roof, the method comprising: providing a hip beam, a valley beam, a hip tenon adaptor, a valley tenonadaptor, and a connector, wherein the hip and valley tenon adaptors each comprise a connection formation, and the connector comprises a hip flange and a valley flange, the hip and valley flanges each comprising a complimentary connection formation for engaging the connection formation of the respective hip and valley tenon adaptors;attaching the hip beam to an elbow of a rear wall plate using a hip tenon;attaching the valley beam to an elbow of a front wall plate using a valley tenon;coupling the hip tenon adaptor to an end of the hip beam of an apex of the A-frame;coupling the valley tenon adaptor to an end of the valley beam at the apex of the A-frame;changing respective pitches of the hip and valley beams by sliding the connection formations of the hip and valley tenon adaptors against the complimentary connection formations of the respective hip and valley flanges; andsecuring the hip tenon adaptor to the hip flange and the valley tenon adaptor to the valley flange.

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