A. 1.0
B. 1.25
C. 1.5
D. 2.0
Related Mcqs:
- If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is )/(1 + sin )]_________________?
A. h = (W/Aw) [(1 –
B. h = (W/Aw) [(1 + )/(1 + sin )]
C. h = (W/Aw) [(1 – )/(1 + sin )]²
D. h W/Aw) [(1 – )/(1 + sin )]² - To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than________________?
A. b/3
B. b/4
C. b/5
D. b/6 - If p1 and P2 are effective lateral loadings at the bottom and top exerted by a level earth subjected to a super-load on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is____________________?
A. [( – )/2] h
B. [( + )/4] h
C. [( + )/2] h
D. ( – h - In case the factor of safety against sliding is less than 1.5, a portion of slab is constructed downwards at the end of the heel slab, which is known as___________________?
A. A key
B. A cut-off wall
C. A rib
D. All the above - If is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is________________?
A. 0.3 H
B. 0.4 H
C. 0.5 H
D. 0.7 H - The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is_______________?
A. 51.5
B. 52.5
C. 53.5
D. 54.5 - per unit run exerted by the Total pressure on the vertical face of a retaining wall of height retained earth weighing per unit volume, is___________________?
A. wh [(1 – )/(1 + sin )]
B. wh² [(1 – )/(1 + sin )]
C. wh² [(1 – )/2(1 + sin )]
D. wh² [(1 – )/3(1 + sin )] - The thickness of base slab of a retaining wall generally provided, is_____________?
A. One half of the width of the stem at the bottom
B. One -third of the width of the stem at the bottom
C. One fourth of the width of the steam at the bottom
D. Width of the stem at the bottom - Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and from the base at a distance of_____________________?
A. h /4
B. h/3
C. h/2
D. 2h/3 - The design of a retaining wall assumes that the retained earth________________?
A. Is dry
B. Is free from moisture
C. Is not cohesive
D. All the above
