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Q. What do you mean by Laying of apron in design of bridge?
Width of apron laid on river bed should be 1.5 D1 where D1 is estimated scour depth in metres below river bed. Thickness of apron as laid can be worked out as quantity of apron stone/ width of apron laid and works out to 1.5 T1 where T1 is the thickness of apron after launching. The thickness at the head should be increased to 2.25 T1 and checked up to verify whether the quantity is adequate for fanning out. If not, the thickness should be increased further as required.
A sand at a borrow pit is determined to have an in-situ dry unit weight of 18.4 kN/m 3 . Laboratory tests indicate the maximum and minimum unit weight values of 19.6 kN/m 3 and
Question What is key difference between normal bolts and high friction grip bolts ? Answer High friction grip bolts are usually used in structural steelwork. They i
what is meant by geodetic survey
A rectangular concrete beam is subjected to a factored design shear force of 200 kips. For the beam shown below, determine the required stirrup size and spacing requirement. H = 3
Uses of Bricks In the following civil works Bricks are used: a. in building blocks. b. For lining of ovens, chimneys and furnaces. c. As aggregates in providing water
Q. Lifting hoops in precast concrete - mild steel vs. high yield steel Strength of high yield steel is undoubtedly higher than mild steel and therefore high yield steel is gen
Planning of Water Transport Facilities: Definition of Terms In water transport system, a number of terms are used. It is necessary for a civil engineer to know the pr
A group of 16 piles of 50 cm diameter is arranged with a centre to centre spacing of 1.0 m. The piles are 9 m long and are embedded in soft clay with cohesion 30 kN/m 2 . Bearing r
What are the advantages and disadvantages of lead products in construction? Ans) Disadvantages: -Lead is very toxic; its use can result in pollution of the ground and more signi
Purpose of plane table
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