Waterproof construction method at the edge of extended foundation base plate (brick formwork and wood formwork) I.
When the door and window opening is encountered before reaching the height of 500, the waterproof shall be turned into the opening; ② Sealing paste shall be used to seal the end part; ③ The waterproof ending method shall be carried out according to the actual situation of the project; 19.
Quality requirements of water stop screw ① full welding on both sides; ② No sand hole, slag inclusion and missing welding; ③ The bolt diameter D shall not be less than 14mm; ④ The thickness of water stop ring is 3mm; 13.
The downward height of concrete in the well from the cushion shall be greater than 1m; ③ Sealing steel plates are welded at the wellhead; ④ The dewatering well shall be 30mm higher than the bottom plate; ⑤ The diameter of embedded steel pipe shall meet the requirements of pump taking 200, and the wall thickness shall not be less than 3mm; 9.
The waterproof coiled material on the side of the foundation pit shall be paved on the side of the foundation pit and within the width of 800mm from the slope top and bottom.
8.
Reinforcement method of stirrup at the position where the water stop steel plate passes through the column and beam ① when the water stop steel plate needs to pass through the column and beam stirrup, the stirrup shall use open hoop and be welded with the water stop steel plate; ② The welding length of one side shall not be less than 10d, and the water stop steel plate shall not be welded through; 12.
5.
Treatment method for the end of the water stop screw of the outer wall of the basement ① remove the wall formwork; ② Remove the conical screw sleeve; ③ Burn out the exposed screws inside and outside the conical screw sleeve; ④ Polymer cement mortar plugging; ⑤ Make additional waterproof layer; 14.
When welding, the edge bends of the two steel plates shall be properly flattened to make the two steel plates overlap in the straight section, and the overlapping length shall not be less than 100mm, and then conduct double-sided close full welding; 11.
Sealing method of dewatering well in the foundation ① the sealing time of dewatering well shall be determined according to the actual situation on site; ② During well sealing, gravel shall be filled into the well first, and then concrete shall be poured into the well.
Method of pipe root out of Wall group ① the pipe root out of Wall group shall be set with concrete pier and abutment, which shall be poured at the same time with the external wall concrete, and the outer skin of outer group pipe shall be 300mm away from the concrete outside the pier and abutment; ② The horizontal and vertical clear spacing of group pipes shall not be less than 100mm; ③ When steel plates are used to temporarily block the end of the group of pipes, the steel plates shall not exceed the pipe edge, so as to facilitate the installation of the front formwork; ④ Formwork positioning support shall be set inside the pier and abutment to ensure the pouring size of the pier and abutment; ⑤ The formwork outside the pier and abutment shall be reinforced with steel pipe; 17.
Waterproof practice of pile head ① apply a layer of permeable crystalline waterproof coating on the pile top, pile side and 250 around the pile; ② Apply 20 thick polymer waterproof mortar on the permeable crystalline waterproof coating; ③ Large surface waterproof construction shall be carried out on polymer waterproof mortar, from the edge to the pile edge; ④ Sealing paste at the junction of large surface waterproof and pile and at the root of anchor bar at pile head; 3.
Welding positions and methods of different plane water stop steel plates ① the lap joint of water stop steel plates shall be closely welded on both sides, and the lap length shall be 100mm; ② The water stop steel plate at the corners of different planes adopts the whole plate to pass through after bending; ③ The overlapping position of water stop steel plate shall not be less than 300mm from the corner; 10.
Waterproof practice of basement exterior wall root ① 50mm arc shall be made at the corner; ② Additional waterproof layer shall be made at corners, deformation joints, construction joints and pipe roots, and the width shall not be less than 500mm; ③ The overlapping width of waterproof coiled material must meet the specification requirements; ④ The staggered joint of connected coiled materials shall not be less than 500mm; ⑤ The joints of the upper and lower layers and two adjacent coiled materials shall be staggered by 1 / 2 of the width, and the two layers of coiled materials shall not be paved vertically; 16.
2.
Building communication media ID: jianzhong0011.
Construction method of post cast strip (with precipitation) ① when the groundwater level is higher than the foundation slab, the anti water pressure cushion shall be set at the post cast strip during the construction of foundation cushion, and the construction method is shown in the figure; ② The anti water pressure cushion shall be poured separately, and the concrete grade shall be the same as that of the foundation slab; ③ The additional layer of waterproof coiled material is usually arranged under the water pressure resistant cushion and exceeds 250mm on both sides; ④ The sequence of each layer at this position is: Foundation → cushion → waterproof layer → waterproof additional layer → water pressure resistant cushion → bottom plate; If the node method is inconsistent with the design, the design shall prevail.
Waterproof construction method at the construction joint between the floor slab of the middle floor of the basement and the outer wall ① during the construction of the top of the outer wall of the basement, 100×100 timbers shall be embedded at the position shown in the drawing and then removed to form a construction joint; ② Install expansion waterstop at the construction joint; ③ Pouring floor and wall concrete; 15.
Construction method of advanced water stop of post cast strip after bottom plate settlement ① advanced water stop structure is adopted for post cast strip after settlement; ② First pour the concrete of advanced water stop structure, and then pour the bottom plate concrete; ③ Before pouring the bottom slab concrete, the surface of the concrete poured first shall be roughened; ④ Add 500 wide waterproof additional layer under the advance water stop expansion joint; 4.
Waterproof node at external corner of garage roof ① the top of waterproof additional layer at external corner shall not be less than 250mm, and the vertical wall shall not be less than 250mm downward from the construction joint; ② At the corner between the facade and the plane, the coil joint shall be left on the plane, and the distance from the facade shall not be less than 600mm; ③ The lap width of vertical wall and plane waterproof coiled material shall not be less than 150mm; 18.
The coiled materials are overlapped 200 wide at the side of the raft.
The welding position and method of the same plane water stop steel plate shall be the same as that of the plane water stop steel plate.
Plugging method of bolt holes through the wall of exterior wall ① fill the hole with Styrofoam; ② Excavate the orifice for 20mm foaming; ③ Plastering cement mortar for sealing; ④ 100 * 100mm1.5 thick self-adhesive waterproof coiled material (cold adhesive waterproof coiled material with modified asphalt waterproof coating) shall be pasted on the outside of the outer wall; Note: after the external wall formwork is removed, the bolt holes shall be blocked in time and waterproof construction shall be carried out to ensure the construction quality..
Waterproof ending method of exterior wall coiled material ① the ending part of underground wall shall be 500mm higher than the designed outdoor floor.
Construction method of post cast strip (no precipitation) ① when the groundwater level is lower than the foundation slab, the post cast strip shall be set according to the method shown in the figure; ② 500 wide waterproof additional layer at the concrete joint of post cast strip; 6.
Waterproof construction method at the edge of base plate without overhanging Foundation (brick formwork) ① before base plate construction, lay brick formwork and construct waterproof coiled material and additional layer; ② Construction of foundation slab and guide wall; ③ After the construction of the upper wall, the top part of the brick formwork shall be removed; ④ Waterproof coiled material for construction wall; 7.
brick formwork construction is adopted ① brick formwork is built before foundation base plate construction; ② For the construction of waterproof and additional layers, the stubble shall be reserved at the top of the brick formwork, and the full tenon shall be reserved for waterproof here; ③ Construction of foundation slab and guide wall; ④ The rest of the external waterproof coiled materials shall be constructed and overlapped with the brick formwork swing tenon coiled material by 200 width; 2、 Adopt wood formwork for construction ① erect wood formwork before foundation slab construction; ② Construct waterproof coiled material and additional layer, and nail the end into the wood; ③ Construction of foundation slab and guide wall; ④ Remove the side wooden formwork and construct other waterproof coiled materials.
