Roof Flood Test Procedure

In many parts of the country roof design live loads are 20 psf which for large tributary areas can be reduced to 12 psf.

Roof flood test procedure.

Is specifically designed for use under ceramic tile and stone and can be flood tested in 24 hours at 70 f 21 c or higher. If you contemplate flooding your roof please check with your structural engineer. It is commonly referenced as the standard for flood testing roof systems. It is possible you will have to pick him up off of the floor.

Astm d5957 standard guide for flood testing horizontal waterproofing installations is a guide for conducting flood testing of horizontal surfaces with slopes no greater than 1 4 in. Flood testing flood testing involves creating a dam or using a natural surround to pool water on a horizontal surface such as a roof terrace or plaza in order to identify leak locations or evalu ate waterproofing integrity. Testing is performed for a minimum of 24 hours and maximum of 72 hours when rainfall is not forecasted to occur. Prior to beginning the flood test procedure conduct visual inspection of the waterproofing surface and look for pinholes voids uneven membrane coat thickness creases or other defects which may cause a leaking problem.

A pressure differential that simulates wind is created between the interior and exterior of the building and the interior is inspected for any leaks. Water height is maintained so as not to exceed a minimum level of 2 inches below the edge of flashings. Flood testing to detect leaks and verify the quality of newly installed assemblies has a long history in the roofing industry. The aama testing involves a calibrated spray nozzle that applies water at a known rate and pressure to very limited and specific areas.