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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.
why void ratio is greater for fine gained soil then course grained soil.
Q. Pumping at joints in concrete carriageway? Pumping at joints in concrete carriageway takes place in the presence of the below factors: (i) Fine-grained subgrade (ii)
Question 1: A stationary 40 kN single axle load (applied on a circular contact area of radius = 152 mm = 6") is applied to each of the flexible pavement structures indicated below
1feet
Define Fixed instrumentation - Sounding or Sensing Devices? It is possible to monitor local scour at pier or abutment using fixed instrumentation as an alternative to the sound
Point of virtual fixity and critical length of lateral loading for piles Some engineers can get confused about the difference between the two terms which are point of virtual
Explain the Confined Aquifer and Piezometric Surface Confined Aquifer Groundwater is confined by impervious geologic stratums on all sides. The water may be under pressure.
Q. Why does pipe jacking machine usually get stuck when the ground condition change from soil to very hard rock? When pipejacking machine moves from anarea of soil to very hard
Explain the Wetted Perimeter (P) The linear length of the interface between the fluid's cross-sectional plane edges in contact with the pipe or channel wall.
Question What are the main drawbacks of curing by ponding and polythene sheets ? Answer Purpose of curing is to decrease the speed of heat loss of freshly placed concrete to atm
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