Construction method of steel clip flexible connection masonry infilled wall in high seismic fortification intensity area

Abstract

The application relates to a construction method of a steel clamping piece flexible connection masonry filling wall in a high earthquake fortification intensity area, which comprises the following steps: installing a flexible connecting piece after beam construction, fixing the flexible connecting piece on a frame beam, and arranging flexible filling material between the flexible connecting piece and the beam and the frame beam; constructing a masonry wall, supporting a construction column shaping template at a construction column construction position, and pushing a pouring opening cover plate to the outside of the pouring opening and fixing the pouring opening cover plate after pouring of each section is completed. The application has the beneficial effects that the masonry wall and the main body structure directly adopt the flexible connection technology, the filling wall and the lateral force resisting member are avoided from being cooperatively stressed, the bearing capacity of the main body structure is ensured, the sectional pouring technology is adopted to construct the construction column concrete, a plurality of flexible opening and closing pouring openings are arranged at different heights of the construction column shaping template, the compactness of the construction column concrete pouring is ensured, and the construction quality of the construction column is improved.

Description

Technical Field

[0001] This invention belongs to the field of masonry infill wall construction in areas with high seismic fortification intensity, and particularly relates to a construction method for masonry infill walls with flexible steel clamp connections in areas with high seismic fortification intensity. Background Technology

[0002] In today's rapidly developing construction industry, as homeowners' demands for quality of life continue to rise, so too do their requirements for the quality of construction projects. Therefore, construction technology must keep pace with the times, and innovation in construction processes is essential. Thus, a new construction method is needed to reduce the adverse effects on the main structure of the masonry infill wall while ensuring the stability of the masonry infill wall itself.

[0003] Traditional construction methods for structural columns typically involve pouring concrete in a single, continuous process. This method makes it difficult to ensure the concrete is properly compacted, compromising the quality of the structural columns. Furthermore, the current practice for embedding utility boxes in masonry infill walls generally involves building the wall first and then creating grooves. This uses specialized grooving machines and small power tools like manual cutters to create grooves in the masonry for the necessary wiring, then installs the boxes in the appropriate locations, and finally, the masonry worker repairs any remaining grooves and holes in the infill wall to complete the installation. This method generates a significant amount of dust, and the grooving process also causes considerable disturbance to the already formed masonry wall, affecting its overall strength.

[0004] In order to effectively ensure the construction quality of masonry infill walls, it is urgent to innovate the construction methods for connecting masonry infill walls in areas with high seismic fortification intensity based on summarizing traditional construction methods. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a construction method for flexible connection masonry infill walls with steel clamps in areas with high seismic fortification intensity.

[0006] This type of steel-clamped flexible connection masonry infill wall for high seismic fortification areas includes structural columns, masonry walls, flexible connectors, frame beams, standardized templates for structural columns, junction boxes, and 3D printed blocks.

[0007] Flexible connectors are fixed below the frame beams to connect the ring beams. The structural columns are poured between the masonry walls. On both sides of the structural column template, anti-leakage auxiliary plates are fixed to the masonry walls by self-locking rotating parts to compress the structural column template. The structural column template is provided with an array of pouring ports and pouring port grooves. A pouring port cover plate slides in the pouring port groove.

[0008] The connection between the masonry wall and the shear wall is constructed with ordinary blocks and edge-sealing shaped blocks at intervals. A plastering auxiliary device is provided at the gap between the masonry wall and the shear wall. The plastering auxiliary device includes a front plastering auxiliary plate and a joint caulking plate. The 3D printed blocks are provided with pipeline pre-reserved grooves and selectively have pipeline box slots for installing pipeline boxes and running pipelines.

[0009] Preferably, the top of the flexible connector is fixed to the frame beam with nails, and a pre-embedded steel plate is provided on the ring beam for connecting the flexible connector. Flexible filling material is provided in the gap between the flexible connector, the frame beam and the ring beam.

[0010] Preferably, the standardized template for the structural column is provided with a bottom reinforcing steel. The masonry blocks on both sides of the bottom of the standardized template are connected by block tie rods and the bottom reinforcing steel. Fixing plates are provided on the blocks on both sides of the structural column by self-locking rotating parts. The fixing plates are rotated by the self-locking rotating parts and used to fix the anti-leakage auxiliary plate. The pouring port cover is provided with a cover handle. The bottom of the pouring port chute is provided with a cover limiting groove. The standardized template for the structural column below the pouring port is provided with a cover rotation fixing rod for rotating, fixing and unlocking the pouring port cover. The top of the standardized template for the structural column is provided with a top reinforcing steel and block tie rods. The bottom reinforcing steel and the top reinforcing steel are both connected to the anti-leakage auxiliary plate by auxiliary plate fixing bolts.

[0011] Preferably, the edge-sealed shaped block is provided with a block side plate on one side, and the block side plate is provided with vent holes and grouting holes. The block is provided with studs. The plastering auxiliary device includes an auxiliary plate reinforcing channel steel, a front plastering auxiliary plate, an auxiliary plate bottom plate, a self-locking roller and a jointing plate. The jointing plate includes a replaceable jointing plate and a fixed jointing plate. A disassembly fastener is provided between the replaceable jointing plate and the front plastering auxiliary plate.

[0012] Preferably, the 3D printed blocks include 3D printed blocks A, B, and C. 3D printed block A has a slot for a utility box at its center. The slot has four walls with studs and a positioning film for the utility box inside. An embedded ear plate is provided at the end of the slot. A cover plate pre-reserved groove is provided on the surface of 3D printed block A around the slot, and a utility box cover plate is fixed to the pre-reserved groove. 3D printed block A has utility box pre-reserved grooves at its top and bottom, and a grouting hole and a vent hole are provided at the top. The utility box has ear plates, which are fixed to the embedded ear plates via ear plate connecting screws. The utility box has a pre-reserved hole corresponding to the utility box pre-reserved groove.

[0013] Preferably, both the 3D printed block B and the 3D printed block C are provided with pipeline reserved grooves. The pipeline reserved groove on the 3D printed block B is a straight pipeline reserved groove, and the pipeline reserved groove on the 3D printed block C is a curved pipeline reserved groove.

[0014] This construction method for flexible steel-jointed masonry infill walls in areas with high seismic intensity includes the following steps:

[0015] Step 1: After the ring beam is constructed, install the flexible connectors, fix the flexible connectors to the frame beams, and place flexible filling material between the flexible connectors and the ring beams and frame beams;

[0016] Step 2: Construct the masonry wall. Set up the standardized formwork for the structural column at the construction location, and then set up the anti-leakage auxiliary plate. Fix the anti-leakage auxiliary plate by rotating the self-locking rotating part of the fixed plate. Then, pour the concrete of the structural column in sections through the pouring port. After each section is poured, push the pouring port cover plate to the outside of the pouring port and fix it.

[0017] Preferably, in step two, prefabricated edge-sealing blocks are laid at intervals at the junction of the masonry wall and the shear wall. A block side plate is provided on one side of the prefabricated edge-sealing block, and an air vent and a grouting hole are provided on the block side plate. The plastering auxiliary device includes a front plastering auxiliary plate and a jointing plate. The jointing plate includes a replaceable jointing plate and a fixed jointing plate. The replaceable jointing plate is selected according to the width of the shear wall. The plastering auxiliary device is pushed into the gap at the junction of the shear wall and the masonry wall to carry out the leveling construction of the masonry wall. After the leveling is completed, the plastering auxiliary device is removed, and flexible grout is injected through the grouting hole.

[0018] As a preferred option, in step two, 3D printed blocks are constructed according to the electrical wiring layout drawings. The 3D printed blocks include 3D printed block A, 3D printed block B and 3D printed block C. 3D printed block A has a conduit box slot in the center. The conduit box is installed in 3D printed block A and the conduit box cover is installed. Then the conduit is passed through the 3D printed block.

[0019] The beneficial effects of this invention are:

[0020] 1) The masonry wall is directly connected to the main structure using flexible connection technology, which avoids the infill wall and the lateral force resisting components sharing the load, thus ensuring the load-bearing capacity of the main structure.

[0021] 2) The concrete of the structural columns is constructed using a segmented pouring technique. Several flexible opening and closing pouring ports are set at different heights of the standardized formwork of the structural columns, which ensures the compactness of the concrete pouring and improves the construction quality of the structural columns.

[0022] 3) By using a plastering auxiliary device to set up a leveling layer gap between the shear wall and the masonry wall, the masonry wall and the shear wall are separated from each other in terms of stress. After leveling, a flexible filling material is placed in the gap, and finally the decorative layer is constructed, which improves the crack resistance of the leveling layer.

[0023] 4) By setting up 3D-printed blocks with pre-reserved slots for pipelines and selectively providing slots for junction boxes, junction boxes can be pre-embedded during the masonry process, avoiding the need to install pipelines later, greatly improving the construction efficiency of electrical pipelines, and having good economic benefits. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the flexible connector arrangement;

[0025] Figure 2 This is a schematic diagram of the flexible connector installation;

[0026] Figure 3 This is a three-dimensional schematic diagram of the installation of standardized templates for structural columns;

[0027] Figure 4 This is a schematic diagram of the pouring gate structure;

[0028] Figure 5 This is a schematic diagram of the pouring inlet cover closure;

[0029] Figure 6 It is a three-dimensional schematic diagram of the construction of standardized edge-sealing blocks;

[0030] Figure 7 This is a three-dimensional schematic diagram of a plastering auxiliary device;

[0031] Figure 8 This is a schematic diagram of the installation of plastering auxiliary devices;

[0032] Figure 9 This is a plan view of the replaceable caulking plate;

[0033] Figure 10 This is a plan view of the fixed caulking plate;

[0034] Figure 11 This is a picture of the completed installation of the pipe box cover plate of 3D printed block A;

[0035] Figure 12 This is a 3D schematic diagram of the completed installation of the pipe box for 3D printed block A.

[0036] Figure 13 This is a 3D schematic diagram of 3D printed block A;

[0037] Figure 14 This is a 3D structural diagram of 3D printed block B;

[0038] Figure 15 This is a 3D schematic diagram of a 3D printed building block.

[0039] The components include: 1. Structural column; 2. Masonry wall; 3. Flexible connector; 4. Frame beam; 5. Ring beam; 6. Embedded steel plate; 7. Flexible filling material; 8. Nail; 9. Tie rod; 10. Standardized formwork for structural column; 11. Self-locking rotating component; 12. Pouring port groove; 13. Pouring port cover plate; 14. Block tie rod; 15. Bottom reinforcing steel; 16. Cover plate rotating fixing rod; 17. Cover plate limiting groove; 18. Cover plate handle; 19. Fixing plate; 20. Leak-proof auxiliary plate; 21. Top reinforcing steel. 22. Auxiliary plate fixing bolts 23. Pouring port 24. Stud nails 25. Edge sealing standardized blocks 26. Vent holes 27. Grouting holes 28. Front plastering auxiliary plate 29. Auxiliary plate reinforcing channel steel 30. Block side plate 31. Auxiliary plate bottom plate 32. Self-locking rollers 33. Removable fasteners 34. Replaceable caulking plates 35. Fixed caulking plates 36. Rear plastering auxiliary plate 37. Shear wall 38. Pipeline reserved groove 39. Pipeline box cover plate 40. Cement nails 41. 3D printed block A 42. Pipeline box 43. Pipeline box ear plate 44. Ear plate connecting screws 45. Cover plate reserved groove 46. Embedded ear plate 47. Pipeline box positioning film 48. Pipeline box groove 49. 3D printed block B 50. 3D printed block C. Detailed Implementation

[0040] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0041] Example 1

[0042] As one example, such as Figures 1 to 10 As shown, this type of steel-clamped flexible connection masonry infill wall in areas with high seismic fortification intensity includes structural columns 1, masonry walls 2, flexible connectors 3, frame beams 4, standardized templates for structural columns 10, junction boxes 42, and 3D printed blocks.

[0043] Flexible connector 3 is fixed below frame beam 4 to connect ring beam 5. Structural column 1 is poured between masonry walls 2. Anti-leakage auxiliary plate 20 is fixed on masonry walls 2 on both sides of structural column template 10 by self-locking rotating part 11 to press and fix structural column template 10. Structural column template 10 is provided with an array of pouring ports 23 and pouring port grooves 12. Pouring port cover plate 13 slides in pouring port groove 12.

[0044] The connection between the masonry wall 2 and the shear wall 37 is constructed with ordinary masonry blocks and edge-sealing shaped masonry blocks 25 at intervals. A plastering auxiliary device is provided at the gap between the masonry wall 2 and the shear wall 37. The plastering auxiliary device includes a front plastering auxiliary plate 28 and a joint caulking plate. The 3D printed masonry block is provided with a pipeline reserved groove 38 and selectively provided with a pipeline box slot for installing a pipeline box 42 and passing pipelines through it.

[0045] The top of the flexible connector 3 is fixed to the frame beam 4 with nails 8. A steel plate 6 is pre-embedded on the ring beam 5 to connect the flexible connector 3. Flexible filler material 7 is set in the gap between the frame beam 4 and the ring beam.

[0046] The standardized template 10 for the structural column is equipped with a bottom reinforcing steel 15 and anti-leakage auxiliary plates 20 on both sides. One side of the block tie rod 14 passes through the bottom reinforcing steel 15 and the anti-leakage auxiliary plate 20, and is connected to the block on the other side by tie rod. Fixing plates 19 are installed on the blocks on both sides of the structural column. The fixing plates 19 can be rotated by a self-locking rotating part 11 and used to fix the anti-leakage auxiliary plates 20. The standardized template 10 for the structural column is equipped with a pouring port 23. A pouring port cover plate 13 is installed on the outside of the pouring port 23. A cover plate handle 18 is installed on the pouring port cover plate. It can slide up and down in the pouring port groove 12 on the standardized template 10 of the structural column. The bottom of the pouring port groove 12 is provided with a cover plate limiting groove 17. The bottom of the standardized template 10 of the structural column is provided with a cover plate rotating fixing rod 16. The cover plate rotating fixing rod 16 can rotate to fix and unlock the pouring port cover plate 13 to prevent grout leakage during concrete pouring. The top of the standardized template 10 of the structural column is provided with a top reinforcing steel 21 and a block tie rod 14. The top and bottom reinforcing steels are connected to the anti-grout leakage auxiliary plate 20 with auxiliary plate fixing bolts 22.

[0047] A sealing block 25 is installed at the connection between the masonry wall 2 and the shear wall 37. A block side plate 30 is installed on one side of the sealing block 25. The block side plate is provided with an air vent 26 and a grouting hole 27. A stud 24 is installed inside the block. The sealing block 25 is laid alternately with ordinary blocks. A plastering auxiliary device is installed at the gap between the sealing block 25 and the shear wall 37. The device is equipped with an auxiliary plate reinforcing channel steel 29, a front plastering auxiliary plate 28, an auxiliary plate bottom plate 31, a self-locking roller 32, a replaceable caulking plate, and a fixed caulking plate 35. A disassembly fastener 33 is installed between the replaceable caulking plate 34 and the front plastering auxiliary plate 28. The plastering auxiliary device is placed between the structural column and the masonry wall. It is removed after plastering to form a certain gap between the structural column 1 and the masonry wall 2. Flexible caulking material is injected into the grouting hole 27 later to ensure that the structural column 1 and the shear wall 37 are stressed separately.

[0048] Example 2

[0049] As another embodiment, this second embodiment, based on the first embodiment, proposes a flexible connection technology for masonry infill walls using steel clamps in areas with high seismic fortification intensity. This technology involves efficient electrical pre-embedding technology for masonry infill walls, such as... Figures 11 to 15 As shown.

[0050] The high-efficiency electrical pre-embedded technology for masonry infill walls mainly involves 3D printed blocks A41, B49, and C50. 3D printed block A41 has a pipeline pre-reserved groove 38 inside, studs 24 around its perimeter, a pipeline box positioning film 47 on its back, pre-embedded ear plates at its ends, a cover plate pre-reserved groove 45 on its surface, and a pipeline box slot at its center. The pipeline box cover plate 39 is fixed to the cover plate pre-reserved groove 45 with cement nails. Pipeline pre-reserved grooves 38 are provided at the top and bottom of 3D printed block A41. A grouting hole 27 and a vent hole 26 are also provided at the top. The pipeline box 42 has a pipeline box ear plate 43, which is fixed to the ear plate connecting screw 44 on the pre-embedded ear plate. After the pipeline box 42 is installed, the gaps are filled. The pipeline box 42 also has pipeline pre-reserved holes corresponding to the blocks. The 3D printed blocks B49 and C50 are respectively provided with straight and corner-shaped pipeline pre-reserved grooves 38.

[0051] It should be noted that the parts in this embodiment that are the same as or similar to those in Embodiment 1 can be referred to each other, and will not be repeated in this application.

[0052] Example 3

[0053] As another embodiment, this embodiment three, based on embodiments one and two, proposes a construction method for flexible steel clamp connection masonry infill walls in areas with high seismic fortification intensity, including the following steps:

[0054] The operation method of flexible connection between column construction and main structure is as follows: First, construct the main structure. When constructing the ring beam, embed steel plates. Then, install flexible connector 3. Fix the flexible connector to the frame beam with nails. Set flexible filling material between the flexible connector and the ring beam and frame beam.

[0055] The operation method of segmented pouring of standardized formwork for structural columns is as follows: Standardized formwork 10 is erected at the construction location of the structural column. A bottom reinforcing steel 15 is installed at the bottom of the formwork, followed by a block tie rod 14. Then, an anti-leakage auxiliary plate 20 is installed and fixed to the bottom reinforcing steel 15 using auxiliary plate fixing bolts 22. Next, a top reinforcing steel 21 is installed and connected to the anti-leakage auxiliary plate 20. The block tie rod 14 is then installed, and the self-locking rotating part 11 of the fixing plate 19 is rotated to fix the anti-leakage auxiliary plate 20. Concrete is then poured, and the concrete for the structural column 1 is poured in segments through the pouring port 23. After each segment is poured, the pouring port cover plate 13 is pushed into the cover plate limiting groove 17, and the cover plate rotating fixing rod 16 is rotated to fix it.

[0056] Crack-resistant joint filling technology between masonry infill walls and shear walls: Sequentially lay edge-sealing shaped masonry blocks, select replaceable joint filling board 34 according to the width of shear wall 37, push the plastering auxiliary device into the gap at the junction of shear wall 37 and masonry wall 2, carry out leveling construction of masonry wall 2, remove the plastering auxiliary device after leveling, and inject flexible joint filling material through grouting hole 27.

[0057] High-efficiency pre-embedded electrical system in masonry infill wall: 3D print masonry blocks according to the electrical wiring layout drawings, and prepare conduit boxes in advance. After the three types of masonry blocks are properly laid out, install conduit box 42 in 3D printed masonry block A 41, so that the back of conduit box 42 is attached to conduit box positioning film 47. Then tighten the ear plate connecting screw 44, install conduit box cover plate 39, fill the gap with caulking material, and then run the electromechanical conduit.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

Claims

1. A flexible connection masonry infill wall using steel clamps in areas with high seismic fortification intensity, characterized in that, This includes structural columns, masonry walls, flexible connectors, frame beams, standardized formwork for structural columns, junction boxes, and 3D printed blocks; Flexible connectors are fixed below the frame beams to connect the ring beams. The structural columns are poured between the masonry walls. On both sides of the structural column template, anti-leakage auxiliary plates are fixed to the masonry walls by self-locking rotating parts to compress the structural column template. The structural column template is provided with an array of pouring ports and pouring port grooves. A pouring port cover plate slides in the pouring port groove. The connection between the masonry wall and the shear wall is constructed with ordinary blocks and edge-sealing shaped blocks at intervals. The gap between the masonry wall and the shear wall is provided with a plastering auxiliary device, which includes a front plastering auxiliary plate and a joint caulking plate. The 3D printed blocks are provided with pipeline pre-reserved grooves and selectively have pipeline box slots for installing pipeline boxes and running pipelines. The top of the flexible connector is fixed to the frame beam with nails, and a pre-embedded steel plate is provided on the ring beam for connecting the flexible connector. Flexible filling material is provided in the gap between the flexible connector, the frame beam and the ring beam. The standardized template for the structural column is equipped with a bottom reinforcing steel. The masonry blocks on both sides of the bottom of the standardized template are connected by block tie rods and bottom reinforcing steel. Fixing plates are installed on the blocks on both sides of the structural column by self-locking rotating parts. The fixing plates are rotated by the self-locking rotating parts and used to fix the anti-leakage auxiliary plate. The pouring port cover is equipped with a cover handle. The bottom of the pouring port chute is equipped with a cover limiting groove. The standardized template for the structural column below the pouring port is equipped with a cover rotating fixing rod for rotating, fixing and unlocking the pouring port cover. The top of the standardized template for the structural column is equipped with a top reinforcing steel and block tie rods. The bottom reinforcing steel and the top reinforcing steel are both connected to the anti-leakage auxiliary plate by auxiliary plate fixing bolts. The edge-sealing standardized block is provided with a block side plate on one side, and the block side plate is provided with vent holes and grouting holes. The block is provided with studs. The plastering auxiliary device includes an auxiliary plate reinforcing channel steel, a front plastering auxiliary plate, an auxiliary plate bottom plate, a self-locking roller and a jointing plate. The jointing plate includes a replaceable jointing plate and a fixed jointing plate. A disassembly fastener is provided between the replaceable jointing plate and the front plastering auxiliary plate.

2. The steel-clamped flexible connection masonry infill wall in areas with high seismic fortification intensity as described in claim 1, characterized in that, The 3D printed blocks include 3D printed block A, 3D printed block B, and 3D printed block C. 3D printed block A has a pipe box slot at its center. The four walls of the pipe box slot are fitted with studs, and a pipe box positioning film is installed inside. An embedded ear plate is installed at the end of the pipe box slot. A cover plate pre-reserved groove is provided on the surface of 3D printed block A around the pipe box slot, and a pipe box cover plate is fixed to the pre-reserved groove. Pipe pre-reserved slots are provided at the top and bottom of 3D printed block A. A grouting hole and a vent hole are also provided at the top. The pipe box is equipped with a pipe box ear plate, which is fixed to the embedded ear plate via an ear plate connecting screw. A pipe pre-reserved hole is provided in the pipe box corresponding to the pipe pre-reserved slot.

3. The steel clamp flexible connection masonry infill wall in areas with high seismic fortification intensity according to claim 2, characterized in that... Both 3D printed blocks B and C are provided with pipeline reserved grooves. The pipeline reserved groove on 3D printed block B is a straight pipeline reserved groove, and the pipeline reserved groove on 3D printed block C is a curved pipeline reserved groove.

4. The construction method for steel-clamped flexible connection masonry infill walls in areas with high seismic fortification intensity as described in claim 1, characterized in that, Includes the following steps: Step 1: After the ring beam is constructed, install the flexible connectors, fix the flexible connectors to the frame beams, and place flexible filling material between the flexible connectors and the ring beams and frame beams. Step 2: Construct the masonry wall. Set up the standardized formwork for the structural column at the construction location, and then set up the anti-leakage auxiliary plate. Fix the anti-leakage auxiliary plate by rotating the self-locking rotating part of the fixed plate. Then, pour the concrete of the structural column in sections through the pouring port. After each section is poured, push the pouring port cover plate to the outside of the pouring port and fix it.

5. The construction method for steel clamp flexible connection masonry infill wall in high seismic fortification intensity areas according to claim 4, characterized in that, In step two, prefabricated edge-sealing blocks are laid at intervals at the junction of the masonry wall and the shear wall. A block side plate is provided on one side of the prefabricated edge-sealing block, and the block side plate is provided with vent holes and grouting holes. The plastering auxiliary device includes a front plastering auxiliary plate and a jointing plate. The jointing plate includes a replaceable jointing plate and a fixed jointing plate. The replaceable jointing plate is selected according to the width of the shear wall. The plastering auxiliary device is pushed into the gap at the junction of the shear wall and the masonry wall to carry out the leveling construction of the masonry wall. After the leveling is completed, the plastering auxiliary device is removed, and flexible grout is poured in through the grouting hole.

6. The construction method for steel clamp flexible connection masonry infill wall in high seismic fortification intensity areas according to claim 4, characterized in that, In step two, 3D printed blocks are constructed according to the electrical wiring layout drawings. The 3D printed blocks include 3D printed block A, 3D printed block B and 3D printed block C. 3D printed block A has a conduit box slot in the center. The conduit box is installed in 3D printed block A and the conduit box cover is installed. Then the conduit is run through the 3D printed block.

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