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aaron, Pervious Pavement for Roads Has been the Dream of most environmentalist. The idea of a Reservoir under the pavement seems enticing but sadly though no one has come up with a cheaper solution in the maintenance of your sublayers cause definitely they need yearly cleaning or replacement...

Gemeda, Good Topic you raised here,I am surely interested on all the comments and advice they will give you. I for one had experiences on Hydro Dams built in the Southeast. I can say that you are on the early stage of the feaseble study. Good luck on this project of yours i'll be checking on...

Jessie1967, Why do you want a software for this problem? and why too many assumptions. You only have a 300 lb concentrated load you say. besides this is an ordinary Engineering Mechanics problem you dont need a formula only equilibrium laws and simple Geometry will give you the reasonable...

Hi, I am trying to comprehend your situation so i can offer some assistance, You said you are designing a utility vault, I designed a lot of Sewer Chambers,Barrel,wingwalls,manholes and other uderground structures but i did not know that back fill can be used to resist shear stresses. I would...

Drum Chaser, If your looking for a sofware that can do all the Geometry of a Bridge Try Geopak since you mention Microstation. Although you have to learned to used it first, This one is worth your time to learn because you desire automatic and precise calculation.... Any kind of Bridge is...

hi raydefan, the answer to your question is defendent on what state or jurisdiction your in.The book your asking Is Standard Specifications for Road and Bridge Construction, This is Issued by Your States DOT and most all consulting firm who does Roads and Bridges has a copy, So I beleive you...

Alleluiah Guys...... Engineering is an art and science by which the properties of matter are made useful to man......defined by webster in its simplest form...... and its only my opinion that " An Engineer has got to do what an Engineer has got to do." that is make all matter useful to mankind...