The constructors bible for designing a drainage system
The constructors bible for designing a drainage system
Effluents are transported from the utilities to the sewer or septic tank with the help of drainage pipes. Pipes are laid in between inspection chambers in sewer systems that run from houses. This drainage setup must be self-cleaning, with running wastewater doing the flushing. Correct gradients are used for this purpose. Normally UPVC pipework is employed in the sewer system. After laying the system, the next important step is to test it before completing work and closing the system. The testing should be performed in between the inspection chambers.
Drainage pipes are positioned in trenches which have been pre-dug. Three hundred to five hundred millimeters is the typical depth adopted. A system is surrounded in concrete when it is passed below sidewalks, driveways or parking areas. The excavation should be done according to the requirements. Levels should be graded in the direction of the sewers or tanks. The slope should be in the ratio of one is to four. The bottoms of the trenches are usually highly compressed. Pegs can be used to set accurate levels in the trench bottoms.
Straight lines must be adopted for laying the drainage pipes as bends will create weaknesses and areas where blockages can occur. When the pipes have to be fixed on a slope or towards the building, join the sections with sockets. The ground on which the systems lies should be even and solid. The female and male sockets should be joined firmly using a strong adhesive. When using the adhesive, the manufacturer’s instructions should be followed. When connecting to the inspection chambers, the pipe should go into the full wall thickness. Clean any debris from the pipes.
Before laying down the drainage pipes, they should be examined minutely for any defects. This is to make sure they are not perforated. Make certain that the hooks of the sockets are firmly fixed in the foundation. The hooks must be as stunted and small as possible. The points at which pipes enter and leave an inspection chamber should be on a level with each other and properly graded. Once all joints are done, wrap the system and cover with soil. Next, it should be connected with the sewer or septic tank. Complete the drainage system by connecting the utilities and test the full system.