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How do I determine the length of a sewer throttle pipe? I need to limit flows to 60 l/sec within a 200DN DI sewer (ks value of 1.5 used) What is the formula/ way of doing this? Thanks

How do you calculate the minimum sump volume in a wetwell for a duty assist system? I am able to work out the duty requirements, but not the assist.... The plan area of the wet well is 14.79m2, and the bench is under the proposed OFF levels for the pump, and therefore does not need to be...

Thanks Ussuri, i have come across Urban Drainage in the past and has proved to be a very useful book... Im not an civil-engineer by degree, more a geological-engineer and it did explain things from 1st principles. I will look into getting a copy!

Sorry, CSO's = Combined Sewer Overflows STW's = Sewage Treatment Works Thanks

I am about to start designing CSO's and STW's within the UK. Does anyone have any guidance sheets or notes for this, as i have no experience in the work, and would like to get a bit of knowledge before i dive into the work? Thanks in advance

Hi, was wodering if any of you guys could help me. I'm about to begin negoitating my salry at a prospective employer in southwest UK has a hydraulic modeller. I have one years experience using the industry computer packages i.e. InfoWorks and MapInfo. I have carried out 3 Drainiage Area Plans...

What is the best to remediate a coastal landslide? The area that i am looking at is Lyme Regis, UK, where the towns stability is failure. Also the famous Black Ven Landslide Complex is nearby. Would it be to place an embankment 50m offshore to decrease the energy of the waves? Thanx