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Pre-tensioning systems
In the previous unit we have seen different steps in a pretensioning operation. Tendon wires or strands (formed as a rope type arrangement made of several tendon wires) are stretched and concrete is cast in the moulds, as shown in Figure. When sufficient strength is gained by concrete due to hardening, tendon wires may be cut from outside and jacks may be removed.
Economic span
plane table surveying is used commonly to survey small areas because
Break even point: EM Electricals, Inc., contains fixed costs of Rs. 600,000 this period. Variable costs involved labour charges of Rs.100 per unit and material cost of Rs. 200
Q. Illustrate the Purpose of pedestals? When structural steel works are connected to foundation, pedestals are generally designed to carry loads from metal columns through grou
how static and dynamic frames are works?
1. Draw the projections of a line AB that is 50 mm long and is parallel to both the HP and the VP. The line is 40 mm above the HP and 25 mm in front of the VP. 2. A line AB, 50 mm
Lubrication of rail joints is one of the important items of permanent way works incidental to systematic track maintenance, the lubrication of joints is done for the following purp
Debonding
Explain the Unconfined Aquifer Also termed "free aquifer". Groundwater flows by gravity from high head to low head. The upper water surface is termed "water table", is influenc
Level 2 Acceptance Testing : This will also include the same tests as in Level 1 A. General inspection B. Test on specially moulded test piece C. Test on complete bearings
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