BS ISO 20325. Service activities relating to drinking water supply and wastewater systems. Stormwater management. Guidelines for stormwater management in urban areas— 61 стр.
Gully tops and manhole tops for vehicular and pedestrian areas. Definitions, classification, general principles of design, performance requirements and test methods— 50 стр.
BS EN 12566-3. Small wastewater treatment systems for up to 50 PT. Part 3. Packaged and/or site assembled domestic wastewater treatment plants— 88 стр.