Can anybody help me answer those questions When designing retaining walls, a tri

Question

Can anybody help me answer those questions

When designing retaining walls, a trial section with some of the dimensions is assumed. This initial design step is called (a) dimensioning (b) proportioning (c) sectioning (d) designing The minimum depth of soil in the front of retaining walls is about (a) 0.1 m (b) 0.3 m (c) 0.6 m (d) 1.0 m The base width of retaining walls of height H is generally between (a) 0.1 H to 0.3 H (b) 0.3 H to 0.7 H (c) 0.5 H to 0.7 H (d) 0.5 H to H Which is the best option to increase the resistance to sliding of the retaining wall? (a) Increase the base width of the wall (b) Increase the height of the wall (c) Construct the base key (d) none of the above The tensile stress develops at the end of the heel section of the retaining wall when (a) e = 0 (b) e B/6 where e is the eccentricity of the resultant of the sum of the vertical forces and the horizontal earth pressure, and B is the base width of the retaining wall.

Explanation / Answer

20. option a

dimmensioning is the process of selection of dimmension

21. option c is the correct answer

to negotiate the effect of weathering elements a minimum depth of 0.6 m is required

22. option c is the correct answer

base width of retaining wall generally lies between 0.5h to 0.7 h

23. option c is the correct answer

construction of base key is the best option to decrease the sliding resistance

24. option c is the correct answer

e=b/6 @ heel is the correct answer to develop tensile stress

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