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Fitting of drains, this is the program plan







Fitting of drains, this is the program plan

Before carrying through any DIY plumbing and sewage, you should first take into consideration the rules issued by your Local Authority.

You will have to present detailed plans for the proposed drainage work when you are changing existing drainage system or installing a new drainage system, and also need regular inspections to be undertaken to ensure that the plans are following the local building rules during progressing each phase of the work. However you don’t need to inform them if you are just replacing some damaged parts.

When rain falls on your house and property, it runs across as surface water and has to be drained properly. This surface water can seep into sewers, watercourse and become a part of the sewage system in older housing developments. The rainwater pipes in combined sewage systems empty their discharge into the foul water drains through gully traps, this prevent foul air from escaping outside creating odours. But modern systems are especially created so that dirty water and surface water remain separate. It’s absolutely crucial that you keep the dirty water sewage system apart from the one for surface water. When in doubt about the how the modern drainage system works, consult the Building Control Department.

To properly prepare the plans and get local authority permission to commence work there is a need for you to plan the route of the waste pipes before you begin. Sewage pipes must be aligned as straight as possible, with inspection chambers at short intervals. You should not make your pipe runs very steep although some gradient is essential. You can calculate the fall of a drain over a distance using a surveyors site level. By establishing a datum point and using a hosepipe filled with water to establish levels you can calculate the fall from the datum in a situation when do not have one of these measures available.

The stability of the existing house is of prime importance it should be not compromised while the drain trench is being installed so check you are not impacting on the existing structure. Similarly, take care of the foundations when laying a waste pipe that runs alongside the home.

Try to leave as short a time as possible between digging the ditch and installing the drainage system as an empty ditch represents a danger with the potential for a sidewall collapse. Excavate a part of the sewage system, install and test the pipework, and then back fill and compact the earth before moving on to the next part.

Weak soil may require that you shore up the walls of the excavation, particularly for deeper trenches. Avoid risks when working in the trench. Be on the safe side and secure the sides of such risky trenches by propping with sheets or boards. Make sure that you leave enough room in the trench for you to work but try to keep it as small as possible. Ensure that the ditch bottom is flat and free of stones, tree roots and soft spots. If the exiting material is not suitable then you may need to import a suitable material for the base of the trench.

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. For accommodation of the joints in the pipes,the bedding should be compacted in a regular way with hollows made a appropriate points. For the complete pipe length you have to provide a continuous and uniform support.

It is important that all parts of your sewage system are designed so that all parts of the pipework are accessible to a set of drain rods. The drains should therefore run straight between two points to ease the passage of the drain rods. An inspection chamber should be present at places where the pipework changes its direction, this is important so that it remains accessible to drain rods and they do not need to go around corners.

Following this guide you can see that DIY plumbing and sewage can be delivered by conscientious DIY enthusiasts.

Posted in Drains


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