The Wallingford Procedure - for design and analysis of urban storm drainage

The Wallingford Procedure is a complete methodology for the design and analysis of urban drainage systems. It is invaluable for all those engaged in or responsible for urban drainage. Of the original 5 volumes published in 1981, only 3 volumes are still relevant today. All documents are available in pdf format.

The Principles Methods and Practice (Volume 1) describes the background and development of the Wallingford Procedure. Four methods, incorporated within an economic framework are used to design sewer dimensions, depths and gradients and to simulate the behaviour of a system under surcharge and with surface flooding.

The UK Maps (Volume 3) are four large scale maps of the UK giving meteorological and soil data. To a scale of 1:1 million, the maps can be used to obtain the most accurate values of various parameters for a given location. The soil map also includes Scotland and Northern Ireland.

The Modified Rational Method (Volume 4) presents a hand calculation for a modified version of the Rational Method for use in the UK. This volume is suitable for those designing or analysing small sewer systems or for planning urban drainage schemes.