21. Plan of a three legged tower forms an equilateral triangle of side 4 m. If total weight of tower
is 450 kN and is equally carried by all the legs. Compute the vertical stress increase in soil by
the tower at a depth of 4 m directly below one of the legs :

‎4m‏ ۰ھ

‎4m
‎(¢) 15 kN/m? (B) 6kN/m2

‎(© 20 kN/m? (D) 45 kN/m2

‎22. The total unit weight of soil is 18.8 kN/m', the specific gravity (G) of the solid particles of soil
is 2.76 and the water content (w) of the soil is 12%. Calculate the void ratio :

‎(^) 1.56 (B) 2.4
(C) 0.89 (D) 0.56

‎23. What will be the ratio of average permeability in horizontal direction to hat in the vertical
direction (kH/kV) for a soil deposit consisting of 3 horizontal layers, if the thickness and
permeability of the second layer are twice of those of the first and those of the third layer
twice that of the second?

‎(A) 9/7 (B) 76
( 5/8 (D) 4/7

‎24. Height of buildings is strictly restricted in zoning when :
(A) _ it affects aesthetics of the place (B) _ the site is close to an airport
(C) the building is near a river (D) the building is built ina marsh

‎25. The facility in a port, to allow for ships to be taken on repair is known as:
(A) Pier (B) Wharf
(0) Dock (D) Apron

‎26. The resultant force of two equal forces P is also equal to P. The angle between them in degree
is:

‎(A) 30 (B) 60
(C) 90 (D) 120

‎27. The unit of moment of force is :
(A) N/m (B) Nm
(C) N/m? (D) Nm?

‎

‎A 7 121/2022
[P.T.0.]