A masonry dam of trapezoidal cross-section, with one end face vertical, has a thickness of 0.6 m at the top and 3 m at the bottom. It is 6.75 m high and the vertical face is subjected to water pressure, the water standing 4.6 m above the base at the upstream side. Assume that the hydrostatic uplift varies uniformly from 50% at the heel to zero at the toe. Use s = 2.4 for concrete. Compute the following: a. Vertical reaction of the foundation b. Distance of the vertical reaction from the toe. c. Factor of safety against overturning.

A masonry dam of trapezoidal cross-section, with one end face vertical, has a thickness of 0.6 m at the top and 3 m at the bottom. It is 6.75 m high and the vertical face is subjected to water pressure, the water standing 4.6 m above the base at the upstream side. Assume that the hydrostatic uplift varies uniformly from 50% at the heel to zero at the toe. Use s = 2.4 for concrete. Compute the following: a. Vertical reaction of the foundation b. Distance of the vertical reaction from the toe. c. Factor of safety against overturning.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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 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
A rectangular gravity dam has a height 5 m. It retains 3 mdeep of water. Calculate the minimum width of the concrete damthat is necessary to prevent the dam from sliding. The specificgravity of the concrete is 2.4 and the coefficient of frictionbetween the base of the dam and the foundation is 0.50. Use factorof safety against sliding of 1.5. a. 3.214 m b. 2.345 mc. 1.125 m d. 1.254 m
The section of the masonry dam is shown in Figure3a. If the uplift pressure varies uniformly from fullhydrostatic at the heel to full hydrostatic at the toe,but acts only over 2/3 of the area of the base, find(a) the location of the resultant; (b) the factor ofsafety against overturning; and (c) the factor ofsafety against sliding if the coefficient of frictionbetween base and foundation is 0.60. Unit weight of concrete and masonry is 23.54 kN/m3for all the problems NOTE: CLEAR HANDWRITTEN SOLUTION
Water flows at a rate of 3 m3/s through a 300 mm diameter pipe in which there is a 90 degreebend.(a) if the pressure at the entrance to the bend is 450 kN/m2 (absolute), determine the total force necessary to anchor the bend. FricLon losses can be neglected (b) if the bend was only 60 degree, by how much would the anchoring force change?
What is the minimum width for the base of a dam 30m high if upward pressure beneath the dam is assumed uniformly from full hydrostatic head at the heel to zero at the toes? Use the resultant of the reacting force cut the base at the downstream edge of the middle third of the base at O and weight of the concrete is 2.5w.
A masonry dam of trapezoidal cross section, withone face vertical has a thickness of 60 cm at the top,3.70 m at the base, and has a height of 7.40 m.What is the depth of water on the vertical face ifthe resultant intersects the base at the downstreamedge of the middle third? Assume that the upliftpressure varies uniformly from full hydrostatic atthe heel to zero at the toe. Follow the steps: Step 1. Solve for all the forces. Step 2. Solve for Rx and Ry. Step 3. Solve for RM and OM. Step 4. Solve for x, where we will get the value of h or the depth of water. Note: The answer must be near or exactly 5.83m.
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 concrete gravity dam has maximum water level 205.0 m, bed level 126.0 m, top R.L. of dam 210.0m, downstream face slope starts at R.L. 200.0 m, downstream slope 2:3, tail water is nil, upstreamface of dam is vertical, centre line of drainage gallery is 8 m downstream of upstream face, upliftpressure is 100 per cent at heel, 50 per cent at line of gallery and zero at toe, weight of concrete is 2.5tons per cubic metre. Considering only weight, water pressure and uplift, calculate the maximumvertical stresses at the toe and heel of dam. Take coefficient of uplift pressure as 1.
What is the minimum “B” for the base of a dam 30m high if upward pressure beneath the dam is assumed uniformly from full hydrostatic head at the heel to zero at the toes, and assuming floating logs causing a thrust of 3700 kg/m of dam at the top? For this problem, make the resultant of the reacting force cut the base at the down stream edge of the middle third of the base at O and take the weight of the concrete as 2.5ϒ. SHOW COMPLETE SOLUTION. NEED ASAP. THANK YOU
A hydraulic jump is formed in a trapezoidal channelof 2.0-m bed width, 1: 1 side slope, and carrying adischarge of 6.0 m3 Is. The injtial and final depths ofthe jump are 0.5 m and 2.0 m, respectively. Concreteblocks are placed to stabilize the jump. Calculate theminimum weight of these blocks if the coefficient offriction between the blocks and channel bed, c1, is 0.6.