Problem I. With the ongoing extension of Manila Skyway, a series of 250 mm diameter circular poles are to be used as vertical member each carrying a compressive load of P= 7.1 kN acting 150 mm from centroidal axis of cross section and a lateral load of 0.45 kN at the top. If the height and the unit weight of the pole is 3 m and 22 kN/m³, respectively. a. Determine the maximum compressive stress at the base of the pole. b. Determine the maximum tensile stress at the base of the pole. c. Calculate the maximum shear stress at the base of the pole.

Problem I. With the ongoing extension of Manila Skyway, a series of 250 mm diameter circular poles are to be used as vertical member each carrying a compressive load of P= 7.1 kN acting 150 mm from centroidal axis of cross section and a lateral load of 0.45 kN at the top. If the height and the unit weight of the pole is 3 m and 22 kN/m³, respectively. a. Determine the maximum compressive stress at the base of the pole. b. Determine the maximum tensile stress at the base of the pole. c. Calculate the maximum shear stress at the base of the pole.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Lateral Earth Pressure

Section: Chapter Questions

Problem 16.2P

See similar textbooks

Similar questions

pls replyy asap!! Given the dimension of a gravity dam with top base = 2m, bottom base =6m, height = 8m and depth of water at the upstream side is 6m (acting on vertical side of the dam). Neglect hydrostatic uplift and use unit weight of concrete equal to 20 kN/m?. The coefficient of friction between the base of the dam and the foundation is 0.6. Determine the Factor of safety against sliding.
A slab shown supports the load W1 and W2 for every one-meter strip along the longitudinal section. If the total length L= 15m and W=145 kN/m, determine the load W2 in kN/m so that the upward pressure on the slab is uniform and that the barge remains horizontal
A triangular dam has a vertical upstream face 30 m high from the horizontal base. The depth of water is 27 m on the vertical face. If concrete weighs 23.5 KN/m3. Determine the minimum width of the base such that the resultant force falls within the middle thirds, neglecting hydrostatic uplift. What is the minimum coefficient of friction to prevent sliding? What is the shearing stress at the depth of 10 m above the horizontal?
A masonry dam has a given cross-section shown. The intensity of hydrostatic uplift varies uniformly from 100% of the full hydrostatic upkift pressure at the heel to the zero atvthe toe. Concrete weighs 23.6 KN/m^3. Fibd the 1. Total vertical reaction at the bottom of the dam 2. The factor of safety against sliding if the coefficient of friction at base is 0.70 3.the factor of safety against overturning 4. The soil pressure at the heel and atvthe toe
In the figure shown, the concrete dam is 16m high and 13m wide at the base. If the specific weight of the concrete is 23.544KN/m^3 and height of water in the upstream side is 15m, find the factor of safety against sliding, factor of safety against overturning, and the unit pressure on the foundation. Assume there is a hydrostatic uplift that varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe and that the coefficient of friction between the dam and the foundation is 0.50.
The cross section of a proposed concrete retaining wall is shown in Figure 4. The unit weight of the concrete being 24kN/m3. The soil carries a uniformly distributed load of 40kN/m2 at the top. Given c=0, f=32°, gsoil=17.5kN/m3 and µ=0.5. From the data: Check the stability of the retaining wall against sliding and overturning Determine the maximum and minimum pressure under the retaining wall.
A trapezoidal dam with vertical upstream face is 6m high, 0.6m at the top and 3m wide of the bottom. Unit weight of concrete is 23.5 kN/m^3 Using the computed depth of water, compute the hydrostatic uplift force (pound-force) if the uplift varies from full hydrostatic pressure at the heel to zero at the toe using yards instead of meters
A wall footing 1 m wide carries a uniform load of 300 kN/m of wall length. Soil weights 16 kN/m^3.Using the influence chart, compute the total vertical increment of the loads at a depth of 3 m from the edge of the strip in kN/m. a. 48 b. 60 c. 156 d. 108
The section of masonry dam is shown in Fig. U. If the uplift pressure variesuniformly from full hydrostatic at the heel to full hydrostatic at the toe, but acts only 2/3 of the area of the base, find: (a) the location of the resultant, (b) factor safety against overturning, (c) factor of safety against sliding if the coefficient of friction between base and foundation is 0.60.
A dam 4 m wide at the top, 10 m at the bottom, and 20 m high has water 15 m deep on its vertical side. What is the factor of safety against sliding? Assume the coefficient of friction of 0.80 and neglect uplift. Use the unit weight of concrete to be 23.50 kN/m3
A gravity dam of trapezoidal cross section shown below, with one face vertical and a horizontal base is 20 m high and 4 m thick at the top. The water at the upstream vertical face stands 2 m below the crest of the dam. The specific gravity of the masonry is 2.4. Compute the base width of the dam when the resultant force will cut the extremity of the middle third considering the uplift pressure force varies uniformly 100% from heel to zero at toe.
A load of 425 kN/m is carried on a strip footing 2m wide at a depth of1m in a stiff clay of saturated unit weight 21kN/m3 , the water table being at ground level. Determine the factor of safety with respect to shear failure: (a) when c u = 105 kN/m2 and Φu= 0 (b) when c=10 kN/m2 and Φ= 28 degree