Drainage system around the building, an area where rain water access based on the type of ground tilt them toward the water drainage or drainage provided by the public. The drain pipe, use a cement ground tilt 1/200 public drainage flows into the pond, and reinforced concrete. As the market standard as specified in the position or, as appropriate, of the construction site.The type of pipe.-PVC pipe The use of tubes or small fragrant elephant by using it correctly according to the job description.-Pipe water supply, based on the standards of the Metropolitan Waterworks Authority as a criterion. Septic sewer pipe- The size that is specified in the.
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