The frp tile roof uses the water collection tank as the indoor drainage system, and the planning between the frp tile roof and the water collection tank does not have a clear leak-proof method; at the same time, it is bound by the span of the bottom steel beams, and the water collection tank needs to be installed in sections between the steel beams, while There is no special anti-leakage method proposed between the sump and the steel beam.
The upper part of the glass sloped roof is planned to be directly connected to the main structure, and only silicone weather-resistant adhesive is used as the surface layer for waterproofing. However, the unsatisfactory bonding effect between the weather-resistant adhesive and the structural surface layer will directly lead to leakage at the glass layer.
The connection between the steel beams at both ends of the glass sloping roof and the wall, and the planning between the steel beams at both ends of the glass sloping roof and the lower wall are treated with weather-resistant adhesive as an anti-leakage treatment method, but the distance between the weather-resistant adhesive and the plastered surface of the wall The bonding effect is limited, so the leakage of this part is serious when inspected in the dry season.
In order to avoid the sliding of the glass on the inclined roof, the plan requires that an aluminum alloy cover plate be added to the vertical joint of the two glasses (that is, the top of the weather-resistant rubber), and the waterproof screw is used to connect the lower aluminum profile. The safety problem is solved, but the leakage of water is increased. possibility.
Before applying sealant between two glasses or between glass and steel beams, the contact surface should be completely dedusted to ensure the quality of the sealant. However, this key link is easily overlooked during construction, resulting in incomplete sealing of the colloid. , showing leakage.
Insufficient treatment of details between the water collection tank and the glass, and between the water collection tank and adjacent steel beams is another important link that constitutes leakage.
Anti-leakage method
1) Before applying the sealant, use a cloth filled with detergent to clean the contact surfaces of the glass ends and steel beams that are in contact with the colloid, and then dry the surface with a second piece of clean cloth, and require the workers to seal the sealant within 1 hour. Seal the equipment; the room between the two layers of sealant should also be cleaned with a cleaning rag.
2) During equipment construction, the glue between the glass and the glass must be full, and the thickness of the cushion glue should not be less than 35mm; the upper aluminum gland is connected with waterproof screws and the bottom aluminum alloy grid strip, and the two ends of the gland are in contact with the glass with sealant Water repellent treatment is carried out.
3) For the connection between the glass and the steel beam, the sealant is first expanded into a circular arc on one side of the steel beam to avoid partial water accumulation and aging of the sealing material.
4) The connecting part between the glass and the sump, that is, the turning point of the aluminum-plastic panel and the connecting part of the glass and the aluminum-plastic panel, add cross braces under it, so as to ensure that the connecting part has sufficient strength and facilitate future repairs.
5) For the connection between the glass and the upper concrete beam, when the concrete beam is plastered, a cement mortar groove is made at the corresponding part of the glue, and the upper part is made of dripping water, so that the colloid can be injected into the plaster layer and closely connected with the concrete bottom layer, and then The joints of cemented concrete are made into circular arcs, so as to enhance the waterproof effect.
6) For the connection between the sump and the exposed steel beam, use thin steel plates of the same material as the sump to weld with the steel beam and the sump respectively, and make a 10% flow slope to ensure smooth water flow and avoid stagnant water.
7) For the connection between the aluminum-plastic panel and the glass and the wall below the roof, except for adding steel cross braces at the bend of the aluminum-plastic panel and the bottom of the glass joint, the aluminum-plastic panel is required to extend into the plastered surface of the wall Below 10cm, the surface seam between the two is caulked with silicone weather-resistant adhesive.
8) The joints between the I-beams at both ends of the glass sloping roof and the lower wall shall be built with bricks to the bottom 5cm of the steel beams, and the top surface shall be plastered with waterproof mortar to form an outward slope. The gap between them is then sealed with construction ointment.
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