Prefabricated exterior wall panel installation
1 range
This process standard applies to the outer board internal mold structure prefabricated exterior wall board installment craft.
2 construction preparation
2.1 Materials and main equipment:
2.1.1 Exterior panel: Check the model after entering, the geometric size and appearance quality should meet the design requirements. Transverse cavity, vertical cavity waterproof structure is complete. Components should be factory certification.
2.1.2 Joint waterproof insulation materials: plastic (thickness 1.5 ~ 2mm), linoleum, polystyrene board.
2.1.3 Other materials: cement, sand, welding electrodes, steel, steel plate, 107 plastic, waterproof coating and caulking crevices and so on.
2.1.4 main tools: wire rope spreader, ring, crowbar, plate pad, temporary fixtures and wire and other fixed.
2.2 Operating conditions:
2.2.1 familiar with the design drawings, master the external wall model, location, size, elevation and construction practices.
2.2.2 Check the outer wall of the vertical and horizontal water-proof cavity should be intact, if damaged should be repaired, the grass-roots should be cleaned up repair, with 107 glue-doped cement mortar (cement weight 15%) for repair.
2.2.3 will be on both sides of the outer wall of the anchor steel ring chisel out, adjust the straight, ticking should not damage the rings near the concrete, and then waterproof paint in the vertical cavity waterproof paint.
2.2.4 Check the installation position of the outer wall board and the elevation line.
2.2.5 installation of large wall and external platform platform mount bayonet shelf.
2.2.6 check the first layer of concrete retaining frame and reserve position.
3 operating process
3.1 Process flow:
Wipe leveling layer → in place board → external wall panels fixed temporary → insert oil felt bar, polystyrene, plastic strips →
Plug-in point of structural reinforcement → keyway steel welding, pouring concrete → wall plate at the bottom of the dry twist dry cement mortar →
Removal of external wall temporary support
3.2 wipe leveling layer: First, according to the level of plastering mortar leveling layer, to achieve a certain degree of strength, before the wall board in place should be pouring cement slurry, so that the surface is tight, accurate elevation. If you do not wipe the leveling layer, you should take the first wipe leveling point method, until the external wall adjustment in place, the outer wall of the gap immediately below the plug dry cement mortar, but to pinch dense.
3.3 external wall board in place: wall panels before lifting, check the rings, with the card ring pin tight, lifting to the installation location, the first to find a good vertical position, and then slowly drop in place. Wall panels in place, subject to the outer wall line, so the outer wall straight, vertical wall, the same gap, the gap should not be dislocation gap, to prevent squeeze Yanping cavity. Elevation must be accurate to prevent the water level is higher than the file. It is forbidden to pry the external wall panel in the retaining platform and the retaining wall, and pay attention to the angular and waterproof structure of the outer wall panel during the whole installation process. Installation should be responsible for the external wall plate under the mouth of positioning, on the line, and with the footboard to find straight. When installing the first layer of external wall panels, special attention should be paid to the quality, making it the basis of the above layers.
3.4 Temporary fixing of the outer wall board: After the outer wall board is in place, fasten the outer wall panel and the large template with the basket bolts or the temporary fixing fixture. Large corner and gable board adjacent to the two outer wall panels should be fixed to each other, pull the back hard to decoupling. The vertical angle of each layer should be checked by the theodolite.
3.5 Insert the linoleum, benzene strips, plastic strips: first sticks the strips of felt and polyphenylene strips together, insert them into the waterproofing cavity together, insert in the end, tightly around, not bulging or cracking. In the pouring of concrete should be checked before the insert is intact, insert the plastic, the lower end of the practice should be consistent with the design requirements, plastic strip width should be appropriate.
3.6 plug-in point of structural reinforcement: the outer wall of the steel side of the reinforcement ring should be cross-wall reinforcement with the inner ring overlap, the vertical steel reinforcement inserted into the overlapping ring. At least 3 rings shall be inserted at the junction of each outer wall panel and inner wall, and shall be securely fastened (for concealed acceptance).
3.7 keyway reinforced concrete pouring: When the cast-in wall with flat-mode construction, the external wall board in place, the keyway connection reinforcement should be installed with the welding; if the use of tube mold construction, immediately after the demolition of the mold welding. Weld thickness and length should be designed, when the design is not specified, the weld thickness of 6mm, length of 90mm. When the upper and lower reinforcement dislocation, it should straighten out the lap re-welding, the upper and lower reinforcement lap length is not enough, you can add to help strengthen the steel or 8mm thick steel plate for welding. Single-sided welding of steel can be double-sided welding is not enough length. After checking the quality of welding qualified, for hidden inspection procedures before pouring concrete. In the lifting of a layer of external wall before the keyway should be poured concrete, keyway concrete must be compacted.
3.8 outer wall of the bottom of the twist dry cement mortar: keyway welded steel, the bottom wall of the outer wall should be clean, wet water, with linoleum block the outside, but to prevent the block cavity, and then twist dry mortar, and should Nien plug dense.
3.9 Removal of external walls Temporary support: external walls of the corner wall, the wall must be concrete strength of 4MPa or more, before the removal of temporary fixed facilities.
4 quality standards
4.1 Warranty items:
4.1.1 The concrete strength should be in accordance with the design requirements and the construction specifications.
4.1.2 component model, location, node anchor bars must meet the design requirements, and no deformation damage.
4.1.3 keyway concrete joints must be measured accurately, pouring dense compaction, conscientiously conserve its strength must meet the design requirements or construction specifications.
4.1.4 External wall waterproof construction practices must meet the design requirements.
4.2 Basic items: the joints in the keyway reinforcement joints, twist seam practice, should meet the design requirements and construction specifications. Weld length to meet the requirements, the surface smooth, no depression, welding tumor, cracks, pores, slag and undercut.
4.3 Permissible deviation items, see Table 4-40.
1 range
This process standard applies to the outer board internal mold structure prefabricated exterior wall board installment craft.
2 construction preparation
2.1 Materials and main equipment:
2.1.1 Exterior panel: Check the model after entering, the geometric size and appearance quality should meet the design requirements. Transverse cavity, vertical cavity waterproof structure is complete. Components should be factory certification.
2.1.2 Joint waterproof insulation materials: plastic (thickness 1.5 ~ 2mm), linoleum, polystyrene board.
2.1.3 Other materials: cement, sand, welding electrodes, steel, steel plate, 107 plastic, waterproof coating and caulking crevices and so on.
2.1.4 main tools: wire rope spreader, ring, crowbar, plate pad, temporary fixtures and wire and other fixed.
2.2 Operating conditions:
2.2.1 familiar with the design drawings, master the external wall model, location, size, elevation and construction practices.
2.2.2 Check the outer wall of the vertical and horizontal water-proof cavity should be intact, if damaged should be repaired, the grass-roots should be cleaned up repair, with 107 glue-doped cement mortar (cement weight 15%) for repair.
2.2.3 will be on both sides of the outer wall of the anchor steel ring chisel out, adjust the straight, ticking should not damage the rings near the concrete, and then waterproof paint in the vertical cavity waterproof paint.
2.2.4 Check the installation position of the outer wall board and the elevation line.
2.2.5 installation of large wall and external platform platform mount bayonet shelf.
2.2.6 check the first layer of concrete retaining frame and reserve position.
3 operating process
3.1 Process flow:
Wipe leveling layer → in place board → external wall panels fixed temporary → insert oil felt bar, polystyrene, plastic strips →
Plug-in point of structural reinforcement → keyway steel welding, pouring concrete → wall plate at the bottom of the dry twist dry cement mortar →
Removal of external wall temporary support
3.2 wipe leveling layer: First, according to the level of plastering mortar leveling layer, to achieve a certain degree of strength, before the wall board in place should be pouring cement slurry, so that the surface is tight, accurate elevation. If you do not wipe the leveling layer, you should take the first wipe leveling point method, until the external wall adjustment in place, the outer wall of the gap immediately below the plug dry cement mortar, but to pinch dense.
3.3 external wall board in place: wall panels before lifting, check the rings, with the card ring pin tight, lifting to the installation location, the first to find a good vertical position, and then slowly drop in place. Wall panels in place, subject to the outer wall line, so the outer wall straight, vertical wall, the same gap, the gap should not be dislocation gap, to prevent squeeze Yanping cavity. Elevation must be accurate to prevent the water level is higher than the file. It is forbidden to pry the external wall panel in the retaining platform and the retaining wall, and pay attention to the angular and waterproof structure of the outer wall panel during the whole installation process. Installation should be responsible for the external wall plate under the mouth of positioning, on the line, and with the footboard to find straight. When installing the first layer of external wall panels, special attention should be paid to the quality, making it the basis of the above layers.
3.4 Temporary fixing of the outer wall board: After the outer wall board is in place, fasten the outer wall panel and the large template with the basket bolts or the temporary fixing fixture. Large corner and gable board adjacent to the two outer wall panels should be fixed to each other, pull the back hard to decoupling. The vertical angle of each layer should be checked by the theodolite.
3.5 Insert the linoleum, benzene strips, plastic strips: first sticks the strips of felt and polyphenylene strips together, insert them into the waterproofing cavity together, insert in the end, tightly around, not bulging or cracking. In the pouring of concrete should be checked before the insert is intact, insert the plastic, the lower end of the practice should be consistent with the design requirements, plastic strip width should be appropriate.
3.6 plug-in point of structural reinforcement: the outer wall of the steel side of the reinforcement ring should be cross-wall reinforcement with the inner ring overlap, the vertical steel reinforcement inserted into the overlapping ring. At least 3 rings shall be inserted at the junction of each outer wall panel and inner wall, and shall be securely fastened (for concealed acceptance).
3.7 keyway reinforced concrete pouring: When the cast-in wall with flat-mode construction, the external wall board in place, the keyway connection reinforcement should be installed with the welding; if the use of tube mold construction, immediately after the demolition of the mold welding. Weld thickness and length should be designed, when the design is not specified, the weld thickness of 6mm, length of 90mm. When the upper and lower reinforcement dislocation, it should straighten out the lap re-welding, the upper and lower reinforcement lap length is not enough, you can add to help strengthen the steel or 8mm thick steel plate for welding. Single-sided welding of steel can be double-sided welding is not enough length. After checking the quality of welding qualified, for hidden inspection procedures before pouring concrete. In the lifting of a layer of external wall before the keyway should be poured concrete, keyway concrete must be compacted.
3.8 outer wall of the bottom of the twist dry cement mortar: keyway welded steel, the bottom wall of the outer wall should be clean, wet water, with linoleum block the outside, but to prevent the block cavity, and then twist dry mortar, and should Nien plug dense.
3.9 Removal of external walls Temporary support: external walls of the corner wall, the wall must be concrete strength of 4MPa or more, before the removal of temporary fixed facilities.
4 quality standards
4.1 Warranty items:
4.1.1 The concrete strength should be in accordance with the design requirements and the construction specifications.
4.1.2 component model, location, node anchor bars must meet the design requirements, and no deformation damage.
4.1.3 keyway concrete joints must be measured accurately, pouring dense compaction, conscientiously conserve its strength must meet the design requirements or construction specifications.
4.1.4 External wall waterproof construction practices must meet the design requirements.
4.2 Basic items: the joints in the keyway reinforcement joints, twist seam practice, should meet the design requirements and construction specifications. Weld length to meet the requirements, the surface smooth, no depression, welding tumor, cracks, pores, slag and undercut.
4.3 Permissible deviation items, see Table 4-40.
No comments:
Post a Comment