Prefabricated balcony, rain cover, channel plate installation
1 range
The process standards applicable to the general civil residential building reinforced concrete precast balcony, rain cover, channel plate component installation works.
2 construction preparation
2.1 Materials and main equipment:
2.1.1 Components: prefabricated reinforced concrete balcony, rain cover, channel plate model, quality should meet the requirements. And should have component factory certificate.
2.1.2 Cement: more than 325 Portland cement, ordinary Portland cement and Portland cement Portland cement. Should be a factory certificate.
2.1.3 sand, stone: the sand or coarse sand, 0.5 ~ 3.2cm diameter stones.
2.1.4 concrete admixtures: early strength agent, water reducing agent should comply with the relevant standards. Dosage determined by the laboratory.
2.1.5 welding rod: welding grade I with E4303 welding rod, welding grade E5003 or E4303 welding rod, there should be proof of the factory.
2.1.6 Reinforcement for anchoring: specifications, varieties, dimensions and other components meet the Atlas requirements.
2.1.7 fire wire: No. 20 fire wire.
2.1.8 support materials: 100mm × 100mm wooden pillars or tool steel pillars, 50mm × 100mm wooden pull rod, 50mm thick wood plate, wood wedges and nails.
2.1.9 Main equipment: crowbar, hook, sling with, ring, steel wedge and so on.
2.2 Operating conditions:
2.2.1 Before installation, the height and height of the control line and the two side edges should be checked outside the component and the wall.
2.2.2 chisel and straighten the side beam inside the balcony and aisle plate embedded in the ring tendons.
2.2.3 Check the balcony and aisle plate on both sides of the cantilever beam tensile reinforcement of the diameter and the exposed length of the design requirements, and rejection tendons straight.
2.2.4 will be installed balcony, rain cover, channel plate brick wall or the concrete wall of the mouth by leveling with cement mortar leveling.
2.2.5 balcony, rain cover, channel plate temporary support should have sufficient strength and stability. Columns to increase scissors support, with the horizontal bar and the door and window openings of the wall firm. Before the installation of temporary support for the top of the copy level, the bottom of the wedge nail and nail application nail. Lifting the upper balcony or aisle board, the following at least three layers of wood support.
3 operating process
3.1 The process
The slurry slurry → → → adjust the welding → cast long concrete
3.2 sit slurry: the installation of components before the walls of the leveling layer clean, and water-cement ratio of 0.5 prime cement slurry layer, then install to ensure that components and the wall without leaving gaps.
3.3 Lifting: lifting members to make each hook at the same time by force, sling and the angle of the plane should not be less than 45 °. When the component is suspended to a level slightly higher than the floor when the pause, in place when the component first aligned wall edge line, and then according to the size of the external control line to determine the pressure from the wall gently put stability (such as design requirements, Wall of not less than 10cm), pick out part of the temporary support.
3.4 Adjustment: If the component is placed in place after the dislocation, the use of crowbars pad block gently move, the components adjusted to the correct location. Have been installed on all levels of balcony, channel board up and down to the vertical alignment, the level of straight, consistent elevation.
3.5 Welding anchor bars: When the components are in place, the reserved ring ribs on the inner side beams should be straightened and tied with the ring beam reinforcement. The outriggers of side beams should also be lap welded anchor bars. The type, size, length and welding length of the anchored bars shall meet the requirements of the design and the standard drawing. Electrode type to meet the design requirements, full-duplex welding, weld length ≥ 5 times the diameter of the anchor bar. Weld quality after inspection to meet the requirements, for pre-inspection procedures. Anchoring tendons should be anchored into the wall or inside the ring beam, see Figure 4-51.
Figure 4-51
3.6 pouring concrete: the balcony extension of the finished steel welding, the balcony inside the ring bar and beam beam banding finished, and by inspection for hidden inspection procedures, and ring beam concrete at the same time pouring. Before pouring concrete, the mold should be cleaned clean, wooden formwork should be watering mopping, vibrating concrete, be careful not to touch the reinforced bar, vibrated dense, followed by wood socks to ring beam surface smooth (note circle surface Of the elevation line). Channel board installation should be uniform plate joints, slit template support, hanging to be solid, slit with fine stone concrete pouring, vibrating dense, concrete strength grade to meet the design requirements.
4 quality standards
4.1 Warranty items:
4.1.1 The concrete strength of the component at the time of hoisting shall comply with the design requirements and the construction specifications.
4.1.2 Component type, location, fulcrum anchor, must meet the design requirements, and no deformation damage.
4.1.3 prefabricated balconies, rain cover, aisle board bottom of the bedding mortar must be dense, no porosity. The width of the gap between the channel plate should meet the design requirements.
4.2 Basic Items
4.2.1 Lengthening the length of the anchorage bar to meet the requirements, weld surface smooth, shall not have cracks, depression, welding tumor, porosity, ash and undercut and other defects.
4.2.2 balcony board edges should be aligned with the upper and lower left and right balcony board edge.
4.3 Permissible deviation items, see Table 4-41.
Table 4-41
Line item Allowable deviation (mm) Inspection method
Plastering 5
Do not plaster 3
Deviation of horizontal displacement
Elevation ±
5 protection of finished products
5.1 When the stacking of components is overlapped, the wood should be added. In order to prevent the rings from being crushed, the thickness of bedding should be not less than 90mm, and the position of the upper and lower dunnage should be vertical. Stacking site should be flat compaction. Do not stack more than 10 blocks per stack.
5.2 tick cutting embedded steel and embedded iron parts, shall not damage the components.
5.3 During the transportation and installation, the steel bar shall not be exposed to any damage.
5.4 Do not break brick walls or concrete walls when installing components.
6 should pay attention to quality problems
6.1 Installation unevenness: Temporary support top and cement mortar leveling layer must be in a horizontal plane.
6.2 position is not accurate: the installation must be in accordance with the control line and elevation in place, if any deviation should be adjusted.
6.3 Bearing is not real: should pay attention to the formation of leveling layer, the installation of cement slurry should be poured, the installation is still complete pores, the application of dry solid mortar plug real.
6.4 anchor bar length and lap welding does not meet the requirements: the reason is bent bent balcony exposed, resulting in an anchor length is not enough. Anchoring the use of lap welding, it is appropriate to adopt double-sided weld, it seems sometimes changed to single-sided welding, resulting in steel anchorage length or welding length is not enough.
6.5 Anchoring bar does not extend into the wall or inside the ring beam: The position of the anchor bar is different from that of the concrete wall due to the inaccurate location of the component. Lifting should be in accordance with the position line in place.
6.6 balcony, channel board up and down is not vertical: the main reason is not installed by the position line in place.
6.7 Balcony, channel plate under the seepage seepage: As not seriously do waterproofing. After installation should be at any time outside the seam 3cm wide strip of tick off, according to design requirements to do waterproofing. The gap between the channel plate must be compacted with fine stone concrete pouring.
7 Quality records
This process standard shall have the following quality records:
7.1 component certification.
7.2 Reinforced steel factory certificate or inspection report.
7.3 Test report of mechanical properties of steel bars.
7.4 Welding joint tensile test report.
7.5 Cement factory certificate and test report.
7.6 Sand and gravel test report.
7.7 welding rod certificate.
7.8 steel hidden records, pre-installed component records.
The process standards applicable to the general civil residential building reinforced concrete precast balcony, rain cover, channel plate component installation works.
2 construction preparation
2.1 Materials and main equipment:
2.1.1 Components: prefabricated reinforced concrete balcony, rain cover, channel plate model, quality should meet the requirements. And should have component factory certificate.
2.1.2 Cement: more than 325 Portland cement, ordinary Portland cement and Portland cement Portland cement. Should be a factory certificate.
2.1.3 sand, stone: the sand or coarse sand, 0.5 ~ 3.2cm diameter stones.
2.1.4 concrete admixtures: early strength agent, water reducing agent should comply with the relevant standards. Dosage determined by the laboratory.
2.1.5 welding rod: welding grade I with E4303 welding rod, welding grade E5003 or E4303 welding rod, there should be proof of the factory.
2.1.6 Reinforcement for anchoring: specifications, varieties, dimensions and other components meet the Atlas requirements.
2.1.7 fire wire: No. 20 fire wire.
2.1.8 support materials: 100mm × 100mm wooden pillars or tool steel pillars, 50mm × 100mm wooden pull rod, 50mm thick wood plate, wood wedges and nails.
2.1.9 Main equipment: crowbar, hook, sling with, ring, steel wedge and so on.
2.2 Operating conditions:
2.2.1 Before installation, the height and height of the control line and the two side edges should be checked outside the component and the wall.
2.2.2 chisel and straighten the side beam inside the balcony and aisle plate embedded in the ring tendons.
2.2.3 Check the balcony and aisle plate on both sides of the cantilever beam tensile reinforcement of the diameter and the exposed length of the design requirements, and rejection tendons straight.
2.2.4 will be installed balcony, rain cover, channel plate brick wall or the concrete wall of the mouth by leveling with cement mortar leveling.
2.2.5 balcony, rain cover, channel plate temporary support should have sufficient strength and stability. Columns to increase scissors support, with the horizontal bar and the door and window openings of the wall firm. Before the installation of temporary support for the top of the copy level, the bottom of the wedge nail and nail application nail. Lifting the upper balcony or aisle board, the following at least three layers of wood support.
3 operating process
3.1 The process
The slurry slurry → → → adjust the welding → cast long concrete
3.2 sit slurry: the installation of components before the walls of the leveling layer clean, and water-cement ratio of 0.5 prime cement slurry layer, then install to ensure that components and the wall without leaving gaps.
3.3 Lifting: lifting members to make each hook at the same time by force, sling and the angle of the plane should not be less than 45 °. When the component is suspended to a level slightly higher than the floor when the pause, in place when the component first aligned wall edge line, and then according to the size of the external control line to determine the pressure from the wall gently put stability (such as design requirements, Wall of not less than 10cm), pick out part of the temporary support.
3.4 Adjustment: If the component is placed in place after the dislocation, the use of crowbars pad block gently move, the components adjusted to the correct location. Have been installed on all levels of balcony, channel board up and down to the vertical alignment, the level of straight, consistent elevation.
3.5 Welding anchor bars: When the components are in place, the reserved ring ribs on the inner side beams should be straightened and tied with the ring beam reinforcement. The outriggers of side beams should also be lap welded anchor bars. The type, size, length and welding length of the anchored bars shall meet the requirements of the design and the standard drawing. Electrode type to meet the design requirements, full-duplex welding, weld length ≥ 5 times the diameter of the anchor bar. Weld quality after inspection to meet the requirements, for pre-inspection procedures. Anchoring tendons should be anchored into the wall or inside the ring beam, see Figure 4-51.
Figure 4-51
3.6 pouring concrete: the balcony extension of the finished steel welding, the balcony inside the ring bar and beam beam banding finished, and by inspection for hidden inspection procedures, and ring beam concrete at the same time pouring. Before pouring concrete, the mold should be cleaned clean, wooden formwork should be watering mopping, vibrating concrete, be careful not to touch the reinforced bar, vibrated dense, followed by wood socks to ring beam surface smooth (note circle surface Of the elevation line). Channel board installation should be uniform plate joints, slit template support, hanging to be solid, slit with fine stone concrete pouring, vibrating dense, concrete strength grade to meet the design requirements.
4 quality standards
4.1 Warranty items:
4.1.1 The concrete strength of the component at the time of hoisting shall comply with the design requirements and the construction specifications.
4.1.2 Component type, location, fulcrum anchor, must meet the design requirements, and no deformation damage.
4.1.3 prefabricated balconies, rain cover, aisle board bottom of the bedding mortar must be dense, no porosity. The width of the gap between the channel plate should meet the design requirements.
4.2 Basic Items
4.2.1 Lengthening the length of the anchorage bar to meet the requirements, weld surface smooth, shall not have cracks, depression, welding tumor, porosity, ash and undercut and other defects.
4.2.2 balcony board edges should be aligned with the upper and lower left and right balcony board edge.
4.3 Permissible deviation items, see Table 4-41.
Table 4-41
Line item Allowable deviation (mm) Inspection method
Plastering 5
Do not plaster 3
Deviation of horizontal displacement
Elevation ±
5 protection of finished products
5.1 When the stacking of components is overlapped, the wood should be added. In order to prevent the rings from being crushed, the thickness of bedding should be not less than 90mm, and the position of the upper and lower dunnage should be vertical. Stacking site should be flat compaction. Do not stack more than 10 blocks per stack.
5.2 tick cutting embedded steel and embedded iron parts, shall not damage the components.
5.3 During the transportation and installation, the steel bar shall not be exposed to any damage.
5.4 Do not break brick walls or concrete walls when installing components.
6 should pay attention to quality problems
6.1 Installation unevenness: Temporary support top and cement mortar leveling layer must be in a horizontal plane.
6.2 position is not accurate: the installation must be in accordance with the control line and elevation in place, if any deviation should be adjusted.
6.3 Bearing is not real: should pay attention to the formation of leveling layer, the installation of cement slurry should be poured, the installation is still complete pores, the application of dry solid mortar plug real.
6.4 anchor bar length and lap welding does not meet the requirements: the reason is bent bent balcony exposed, resulting in an anchor length is not enough. Anchoring the use of lap welding, it is appropriate to adopt double-sided weld, it seems sometimes changed to single-sided welding, resulting in steel anchorage length or welding length is not enough.
6.5 Anchoring bar does not extend into the wall or inside the ring beam: The position of the anchor bar is different from that of the concrete wall due to the inaccurate location of the component. Lifting should be in accordance with the position line in place.
6.6 balcony, channel board up and down is not vertical: the main reason is not installed by the position line in place.
6.7 Balcony, channel plate under the seepage seepage: As not seriously do waterproofing. After installation should be at any time outside the seam 3cm wide strip of tick off, according to design requirements to do waterproofing. The gap between the channel plate must be compacted with fine stone concrete pouring.
7 Quality records
This process standard shall have the following quality records:
7.1 component certification.
7.2 Reinforced steel factory certificate or inspection report.
7.3 Test report of mechanical properties of steel bars.
7.4 Welding joint tensile test report.
7.5 Cement factory certificate and test report.
7.6 Sand and gravel test report.
7.7 welding rod certificate.
7.8 steel hidden records, pre-installed component records.
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