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Q. Segmentally lined and Sprayed Concrete Linings tunnels?
The fundamental difference between segmentally lined tunnels and SCL tunnels is that the sprayed concrete in SCL tunnel is employed for temporary linings only. Concrete linings in segmentally lined tunnels are designed with long-term load conditions with adoption of appropriate safety factors. Though the dimension of linings in SCL tunnels is derived from a balance between safety of lining and cost consideration.
The quality of precast concrete linings can be better controlled in precasting yards. It is obviously better than that of sprayed concrete which depends on site workmanship.
What is the Pre-tensioned concrete In Pre-tensioned concrete tendons are kept stretched with suitable mechanisms and concrete is cast into the forms through which stretched ten
what is the advanantage& dis advantage
#How to find the sieve analysis of 20mm aggregate?
System A system (often called a closed system) is any collectionof matter within a prescribed boundary, but no matter may enter or leave the system. Note 1. That the bo
describe in detail the uses of concrete
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Explain Equations for a triangular (V-notch weir) Used for small flow rates. C 2 is a coefficient which varies from 0.58 to 0.61 depending upon the notch angle. Q = C
Explain the Design Criteria Sedimentation basin Surface Loading rate (or overflow rate), Vo = Q/A (flow rate/surface area) Detention time t or ? = V/Q (Volume /Flow rate)
Estimation of Discharge: The estimation of discharge of a stream is necessary for determining the waterway, clearance and foundation details. Discharge is estimated from :
distomat
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