Changes

====Distribution pipelines and tapstands====

Tapstands have several components: a concrete post supporting a 15mm mild steel riser pipe from the pipeline up to a bibcock, which should discharge at least 0.1 litres per second; a concrete stand on which to place a bucket; a concrete apron to collect spillage; and a gutter and drainage to a soakaway, in order to prevent the breeding of mosquitoes and the development of a muddy mess.