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A retaining wall 4.5 m high with vertical back supports a backfill with horizontal surface. The unit weight of the fill is 18 kN/m3 and the angle of internal friction is 36°. The angle of wall friction may be taken as 18°. A footing running parallel to the retaining wall and carrying a load of 18 kN/m is to be constructed. Search the safe distance of the footing from the face of the wall so that there is no increase in lateral pressure on the wall because of the load of the footing.
Binder: Normally 60/70 penetration grade, and provides cohesion to the mixture and increases its stability. The mix design is done by the Marshall test, in which a specimen
NaCl->AgNO3
Q. Local Scour at obstructions in rivers? When the water flow in river is deflected by obstructions such as bridge piers, scouring would occur arising from formation of vortexe
The head (energy) loss in the piping system between points 1 and 7 is the most nearly. Solution: 3 ft. The difference between point 1 and point 7 = 10 ƒt - 7 ƒt = 3 ƒt
what is elasticity
Question What is the sucker deck principle for changeable depth bridge decks ? Answer For a variable depth bridge deck, depth of continuous multi-span bridge deck is greater tha
what do mean by outstand element of compression flange, internal element of compression flange and web general
Define the types of Pump Performance Curves Two types of pump performance curves: x-axis = flow rate; y-axis = head (TDH). Characteristic curves: Provided by the pump m
Q. Disadvantages of excessive concrete covers? In reinforced concrete structures cover is generally provided to protect steel reinforcement from corrosion and to provide fire r
shear force and bending moment overhanging beams
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