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Installation of drains pipes, this is the program plan







Installation of drains pipes, this is the program plan

Before you undertake DIY plumbing and drains work it is essential to understand the national rules and rules developed by the local authority.

Detailed plans of any changing or installing of drainage in your home will have to be submitted, and expect ongoing inspections until its completion to ensure that the work abides by the rules. However, you will probably not have to inform the Local Authority for replacement of damaged parts or sections of drainage as permission will have already been granted for the initial installation.

Surface water is basically rainwater. This can discharged into a soakaway, watercourse, surface water sewer or, particularly in older properties, into the foul water sewage system. In a combined system, the rainwater pipes are discharged into the foul water drains via gully traps which stop foul air escaping from the drains. However, modern systems are designed to keep the foul water and the surface water apart. It is extremely important to ensure that you do not connect foul water to a surface water sewage system. You should get advice from the local authority Building Department before you start any work in a situation when you are not sure about the drainage system around your house.

Of course, the first thing you should do is plan the layout of the waste pipes. Keeping the path as straight and short as possible will be the main concept behind the design of the waste passageways or pipes. You should not make your pipe runs very steep although some slope is necessary. Use a surveyor’s leveling tool to set out the slope of the drain ditch. In case you don’t have a surveyors site level, choose a datum point and then a water filled hosepipe can be used to calculate the fall from there.

You will need to ensure that you do not impact on the stability of the building whilst installing your drain ditch. The foundation of the building should not be undermined by your digging if the drainage runs parallel to it.

Try to leave as short a time as possible between digging the ditch and installing the sewage system as an empty trench represents a risk with the potential for a sidewall collapse. Make certain that the pipes are laid as soon as possible and then bury them immediately after the testing and inspection are completed.

Because of different depth and soil conditions the ditch will probably need to be supported. It is no advisable to not take any risks. Be on the safe side and secure the sides of such risky trenches by propping with sheets or boards. Keep the ditch as narrow as possible, but allow room to work in the ditch. The base of the trench should be clean and even and free from protruding stones or bricks etc. You may need to import a suitable material for the base of the ditch if the existing material is unsuitable.

Pipework must be uniformly supported by the soil bed, and not by stones or bricks haphazardly placed underneath the pipes. This should not be used as employing this type of material as a temporary or permanent pipe support will damage the pipe. The material used for bedding should be firmly compacted down with a depression created to allow the joints in the pipes to fit easily. A comprehensive support should be used for the whole of the pipe.

It is very important that the design of the drainage system should be constructed in such a way that all parts of the pipework are accessible to a set of drain rods for future maintenance. This need for drain rod access can be easily achieved by keeping the pipeline straight and in short sections. As a general rule, any change in direction of the pipework should be provided with an inspection chamber to allow rodding access.

If you are keen on DIY and follow some basic rules then you will be able to do plumbing and drainage on your own.

Posted in Drains


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