After formwork removal, the bolt bushing should be removed (at least more than 20mm removed) to meet the leakage plugging conditions of the base; 2.
01 requirements for wall bushing treatment 1.
The reserved holes in the external wall masonry must be wrapped with concrete, and the casing shall not be directly put into the masonry construction; 3.
Office address: No.
20mm wide expansion joints shall be reserved between the rigid protective layer and finishing layer and the casing and sealed tightly with sealing building sealant; 5.
Seal with sealant at the closing around the casing; 6.
The exterior wall brick joints shall not be full, unfilled or blind; 5.
The structural column of the external wall shall not be reinforced through the wall step by step, but shall be reinforced with split bolts; 4.
The scaffold hole of the external wall shall be blocked according to the construction of structural column, with dustpan opening and fine aggregate concrete pouring.
The casing shall be 300mm higher than the finished surface of the roof, and the inner diameter shall be at least 30mm larger than the outer diameter of the pipe; 2.
The concrete inverted sill of the external wall must be roughened and accepted before the formwork can be closed.
03 roof pipe requirements 1.
The pipe installation must be in the center of the casing; Use 1:2.5 cement mortar to fillet 100mm at the internal corner of the intersection between the casing and the roof; 3.
6, Jingshi 5th Road, Shangyu economic and Technological Development Zone, Hangzhou Bay, Zhejiang Province company seat: 0575-82738787 cooperation hotline: 13735321777 enterprise official website: www.yuyist com.
When pouring concrete, it should be vibrated with iron chisel or vibrating rod and poured in place at one time; 2.
Cn business philosophy: professional, attentive, honest, reliable waterproof coiled material | waterproof coating | plugging products | engineering construction..
C20 concrete pier is poured around the casing, 300mm high, round pier, 30mm wider than the casing on each side.
Additional waterproof layer of pipeline: paint a waterproof layer within 250mm around the casing, and turn it up to 250mm of the finished surface of the roof along the casing root; 4.
The outer side is blocked with 1:2 dry and hard expansion cement mortar, 20 ~ 30mm deep.
Polyurethane foam adhesive is injected into the bolt hole from the inner side, which can fill the hole, and the exposed foam adhesive is pressed into the hole when the foam adhesive is not dry; 02 external wall masonry requirements 1.
The pipe out of the roof must be embedded with a sleeve with a waterstop when pouring concrete on the roof slab, and ensure that the concrete around the pipe is dense.
The inverted sill formwork cannot be closed with wall bushing, iron wire, etc., but must be poured with concrete.
