Most properties built since the 1980’s will have circular inspection chambers at key points along the drainage system, such as changes in direction or junction. By removing the cover and checking the internal layout of these ICs, it is a simple task to ascertain whether there are ‘spare’ inlets available which can be utilised to form the required new connection. Any ‘spare’ inlets are usually stoppered from the outside with a plastic cap to prevent mud or debris from entering the chamber from the outside.
Any additional new drainage can be connected to the system via one of these inlets provided that the inlet is the same size or larger than the pipework to be connected. Excavating outside the chamber will expose the stopper cap, which is then removed and the new pipework connected in its place. In cases where the inlet is a larger diameter than the pipework being connected, the use of a taper pipe will allow the connection to be made.