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close this bookStormwater Drainage and Land Reclamation for Urban Development (HABITAT, 1991, 94 p.)
close this folderAnnex I: STORMWATER DRAINAGE DESIGN PROCEDURES
close this folderC. DESIGN CRITERIA
close this folderC.5 Basic design criteria
View the documentC.5.1 Basis of design
View the documentC.5.2 Calculation of stormwater runoff
View the documentC.5.3 Design recurrence intervals
View the documentC.5.4 Calculation of capacity of stormwater drains
View the documentC.5.5 Drainage reserves

C.5.4 Calculation of capacity of stormwater drains

Manning's formulae for open channel flow should be used in calculating the capacity of existing and new stormwater drainage channels. The Colebrook-White equations should be used for the calculation of the flow in pipes.