Setting Up drains pipes, do this 1st
Setting Up drains pipes, do this 1st
Before starting any plumbing and sewage work yourself you should find out about any Local Authority rules that relate to your area.
If you are changing your current drainage, or installing a new system, you will most definitely be asked to show detailed plans of the implementation that you have in mind and it will need to be overseen as the work moves forward to ensure that it is compliant with local building rules. In most cases they do not need to be notified for a simple replacement of broken parts.
If you hear the term ’surface water’ in any drainage documents this basically means rainwater. This can discharged into a soakaway, watercourse, surface water sewer or, particularly in older properties, into the foul water drainage system. If gully traps are fixed at the junction of the rainwater pipe and the waste water drain, foul odour can be controlled. Nowadays hygiene and recycling considerations have led to a mandatory separation of surface water and sewage water. If you have a modern system it is very essential that you make sure that you do not accidentally integrate the foul water to a surface water drainage system. If you are unsure about the drainage system around your house get advice from the Building Control Department before you start any work.
Of course, the first thing you should do is plan the layout of the waste pipes. The basic thing which you have to care about is to keep the route as straight and short as you can while designing the route of a waste or soil pipe, this will help to reduce the likelihood of blocks. Also, make sure none of the pipes are laid at too steep an angle. Use the surveyor’s site level to calculate the drain fall over the complete system. A hosepipe filled with water from an established datum point can be used if you don’t have a surveyor’s site level.
You need to ascertain that the foundations and structure of the house is safe when digging to install your drain trench. Similarly, take care of the substructures when laying a drain that runs alongside the home.
Try to leave as short a time as possible between digging the trench and installing the sewage system as an empty ditch represents a risk with the potential for a sidewall collapse. You should attempt to get the pipes laid as soon as possible and, after inspection and checking, you should back fill the trench.
The ditch may need to be supported depending on the depth and soil conditions. Take he utmost care when doing this work. If in doubt add support to the ditch to prevent it from collapsing. The excavation should be only as wide as required, but should also permit the fitter to work conveniently. The bottom of the trench must be smooth and clean, free of any objects that make it uneven such as stones or bricks. You may need to import a suitable material for the base of the trench if the existing material is unsuitable.
Bricks and/or any other sturdy material should never be used to prop up the pipe in the trench. Even if used for just a temporary support this can damage the pipe. The bedding should be properly compacted with hollows made to accommodate the joints in the pipes. A comprehensive support should be used for the whole of the pipe.
An important criteria for pipe layout is that you should be able to access any point with a drain rod to clear blockages. Thus, a drain route must be as straight as possible between any two points. In case of any change in the direction of the pipework it should be provided with an inspection chamber for allowing drains rod access.
Keeping these points in mind, you can carry out your own drainage and plumbing work smoothly and almost professionally.