The following resources are part of the module Civil Engineering Technology from the 2009/10 BSc (Hons) degree programme Commercial Management and Quantity Surveying. It covers an introduction into drainage systems including sub-soil drainage systems. Gullies, self cleansing velocities and manholes. Drainage trench collapses and trench support systems.
For an alternative version of this video see http://xp-video-1.lboro.ac.uk/Jorum/CivTech/HighwayDrainageRev1/HighwayDrainageRev1.html