METHOD AND STRUCTURE FOR PREVENTING SWELL OF WATERPROOF LAYER

摘要

PROBLEM TO BE SOLVED: To provide a method and a structure preventing a swell of a waterproof layer arranged on a roof floor of a structural body and is provided with a protective layer on an upper surface thereof by asphalt concrete paving. SOLUTION: A roof floor slab with a drainage slope is formed by placing floor concrete on a floor slab. A roofing sheet material having a stripe-like ventilation part at least on a lower surface thereof is laid on the upper surface of the roof floor slab in a manner that the direction of the stripe is arranged parallel to the drainage slope to form the waterproof layer. Permanently-installed first deaeration devices communicating with the ventilation part of the waterproof layer are arranged at appropriate positions. Temporarily-installed second deaeration devices communicating with the ventilation part of the waterproof layer are installed on and along a vertex line of the drainage slope at predetermined intervals. Asphalt concrete pavement is executed on the waterproof layer having the deaeration devices to form a protective layer. The temporarily-installed second deaeration devices are removed after a curing period. COPYRIGHT: (C)2011,JPO&INPIT