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In the design of pipe jacking, what particular areas on pipe joints should engineers take care of?
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Civil Engineering
In pipe jacking / micro tunneling, it is commonly accepted that cover depths of jacking pipes cannot be too shallow (i.e. less than 2D where D is the diameter of jacking pipes). Why?
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Civil Engineering
What is the difference between air chamber and surge tank?
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Civil Engineering
After the construction of water main, prior to hydrostatic pressure test, swabbing is carried out. What is the purpose of swabbing?
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Civil Engineering
In the design of water mains, how to decide the usage of double air valves and single air valves?
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Civil Engineering
In the design of service reservoirs, horizontal reinforcement in walls of reservoirs is placed at the outer layer. Why?
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Civil Engineering
Why are two gate valves required in normal practice to form a washout valve?
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Civil Engineering
Why do BS8007 specify the allowable crack width of water retaining structure as 0.2mm for severe or very severe exposure?
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Civil Engineering
