Following the study of drainage and pipes, I have on going reading on plumbing parts and terminology which I have tried to then apply to pieces of exterior pipe work found in photographs of the area. Looking at the materials used in plumbing, modern day works tend to be made out of PEX (crosslinked polyethylene) which is a high-density polyethylene. It tends to be favoured for its easy installation, low-cost and freeze resistance. Other common materials used for pipe work include ABS and copper, copper requires more expertise needing an increased amount of joints and may suffer weathering. Many drainage systems pre 1960’s were made from other materials such as galvanised steel and cast iron. Before the 19th century and far back to during the Roman period, it was more common to find drainage systems made from lead, ceramics and wood.