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Details of roof structure and waterproof construction(二)

Oct 27, 2017

Four. anti-feixe on the water hole


The Anti-feixe water hole is often part of the leakage. In this case, the designers often have a certain responsibility. If the design requirements are not clear, resulting in blind construction workers, the bottom of the hole can not come out, causing a hole in the water, or too small hole water retention, the hole can not be waterproof design. But while the construction of seriously responsible personnel, while the long-term take corrective measures, these disadvantages are completely overcome. After first open the lower elevation of absolutely precise, not for the holes in the water; Secondly, the water hole of the section too large, is less than 150 mm height, width, not less than 250 mm, to facilitate drainage. Finally, carefully driven waterproof design, the first hole and a hole in both ends of the sealed sealing material in tight, and then build a polymer coating or coil to make sure that some of the foundations (not less than 2 mm) thick for the uniform; The surface to be standardized, flat. If a hole of water buried pipes, pipe diameter is not less than 75 mm, the tube at both ends and concrete contacts in the groove and sealed material sealing. This is the only way we can effectively prevent roof leakage due to water holes.

Fifthly. the highlight of the pipeline roof


The plumbing and roof the intersection is also very critical place, should be highly evaluated. Highlight the roof tube, while the council and reversed after the installation of two carved the inverted plate has been installed. For the first, you could be in the plumbing and roof of the transfer in the use of waterproof mortar with conical shape and to put aside the 20 × 20mm groove to introduce sealing material, and then incorporate the additional layers. Because of its key parts of additional layers to make two. If the coil construction, at the top of the tubing should be added a metal rim or wire loop, at the bottom and base should be connected to natural, smooth. To the extent that this latter is especially critical, poor handling, easy to leak. You should first use the cement expansion in the reinforced reinforcement with plug-ins, to avoid shrinkage scratching, and then in strict compliance with the previous treatment carefully construction of the tubing.

Six. the yin and yang angle


The waterproof layer of yin and yang corner of the grass roots must conform to the requirements of the "specification" made of the arc (or pure) radius according to the different materials are: the polymer synthetic membrane 20 mm; Modified asphalt membrane and waterproof coating 50 mm; 100-150 mm bitumen membrane. Because these parts of the stress concentration often preceded by a large area of water and damage, so that these should be improved with an extra layer. Additional layers can be painted, coated or reinforced with paper roll. Its width on each side (height, aircraft) must be ≥ 200 mm. Corner should be the main store, the angle should be primarily an empty store, it is suitable for the large store to paste the width of each side to 50 mm.

seven. Waterproof layer Header


Waterproof layer removal sites is difficult but also critical, it can not be at any time Alice, Delamination and lead to a leak. This should be strictly according to the "Norms" require the construction of a fine, should not be taken lightly.
The waterproof layer on the cornice of the head, must be 50-100 mm from the edge of the cornice; In parts of the water head of the height of the roof of the equilibrium layer should not be less than 250 mm.
The shell Waterproof layer The head can be coated directly waterproof many times with the material, seals can be. If the membrane is waterproof first processing, the links are more, should be strictly according to the construction procedures. Waterproof layer before the first construction in the head, to put aside the groove, the groove should be wide and uniform, smooth formation, so that the construction of the Groove waterproof layer when the end; A large area in the Waterproof construction; Fine processing head. This means the first pressure groove at the end of a metal braid reinforcement coil and then sealed with the sealant and then cleans out with cement mortar.
Note that: Although we can highlight the need to pay special attention to us, corners and other design elements, but does not mean that you can skip the large waterproof construction area. If a large area of quality waterproof design, but the future will also produce leakage. Just two, both, together with scientific management and maintenance, to completely heal the leak for the waterproofing design problems of common quality.


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