Hydrostatics
A masonry dam of trapezoidal cross-section, with one face vertical, has a thickness of 2 ft and 10 ft at the bottom. It is 22 ft high and has a horizontal base. The inclined face is subjected to water pressure. The water standing to a depth of 15 ft above the base. The weight of the masonry is 150 lb per cu. ft. Where will the reaction (resultant pressure) intersect the base, and what will be the intensity of pressure at the heel and at the toe assuming:
a. that there is no hydrostatic uplift
b. that there is no hydrostatic uplift which varies uniformly from due to a full of head of 15ft at the heel to zero at the toe.
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A trapezoidal masonry dam with vertical upstream face is 4.6 m high, 0.5m wide at the...
A trapezoidal masonry dam with vertical upstream face is 4.6 m high, 0.5m wide at the top and 3m wide at the base. Hydrostatic uplift varies from full hydrostatic pressure at the heel to zero at the toe. Find the depth of water if the pressure at the toe is twice the average pressure at the base. Wt. of masonry is 2,400 kg/m3 Find the height of water that could rise behind a rectangular masonry wall 2m thick and 5m...
A cncrie dam retaining 45 ft of water is shown in Pis 3-36 The specific (or...
A cncrie dam retaining 45 ft of water is shown in Pis 3-36 The specific (or unit) weight of the e S Assume there is hydrostatic uplift that varies uniformly from full hydrostatic ecand at tlee lhod of the dam to zero at the toc. Determine: (a) the factor of safety against sliding, if the . IKYO'l .sf Iri뎌 ion between the base of the dam and thefoundation soil is 04, (b) the factor of Na·lery arutama Emrturni.rg, and (c)...
4. An earth dam in Figure 3 composes of a uniform material. It has a horizontal...
4. An earth dam in Figure 3 composes of a uniform material. It has a horizontal drainage blanket at the base that extends from the downstream toe to a distance of 30 m. The embankment has a permeability of 2.0 x 10-6 m/s. The freeboard is 3.0 m. Draw the phreatic line and thus determine the seepage through the dam. 5. The specific weight of the dam shown in Figure 3 is 2.63, and the coefficient of friction between dam...
When calculating the complete vector on the central section of the dam wall, do you include...
When calculating the complete vector on the central section of
the dam wall, do you include the 8m for the radial gates? Also, how
do you calculate the length of the sides for the pressure prism of
the uplift? The face is 142 + 8, is the other side 142/sin57?
Question 2 A large concrete gravity dam, storing water, has a central drum gate and four (4) radial gates installed on its central spillway section to control releases from the...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the flow net is cons channel and 8 isted of 3 fNow rops, calculate: a) The rate of seepage under the dam in ft /sec/ft. b) Pore water pressure at points A, C, and D in Ib/ft. c) The uplift force in lb/ft at the base of the dam due to water pressure C use points C and D). 20
11. A vertical square hatch (3 ft by 3 ft) is located on the side of...
11. A vertical square hatch (3 ft by 3 ft) is located on the side of a tank containing water (unit wt 62.4 lb/ ft). The top edge of the hatch is 4 feet below the water surface in the tank. Find the depth to the centroid of the hatch and the resultant hydrostatic force acting on it. 12. Find the depth to the center of pressure of the hatch in Problem 11.
I’ve been racking my brain this one. My book showed the answer on how the total...
I’ve been racking my brain this one. My book showed the answer
on how the total force was derived. But I don’t get how it got to
that answer. Can someone help me please?
ethe ratio of the input work to the output work wi-F:aa-EN )-(20 )-1 t verifies that the work input and output are the same, as they must be to conserve energy. This result ,Example 15.2 The Force on a Dam lled to a height H behind...
Just 1,2and3 Then, h is computed as follows. cos-=- 154.5 2.0-h 2.0 (Answer) h= 1.56 ft....
Just 1,2and3
Then, h is computed as follows. cos-=- 154.5 2.0-h 2.0 (Answer) h= 1.56 ft. PROBLEMS T What is the pressure at the bottom of Sunfish Pond, which has a depth of 350 feet? 2. A swimming pool has depths of 4.0 feet and 12.0 feet at the shallow and deep ends, respectively. Find the pressure in lb/ft2 at each end. 3. A reservoir of water is connected to a 12-inch-diameter pipe that is 50 feet long and capped...
QO vreme (b/n) (6) 3. A 40 ft layer of silty clay is overlain by 5ft...
QO vreme (b/n) (6) 3. A 40 ft layer of silty clay is overlain by 5ft of 1000 2000 3000 4000 sand. The base of the clay layer lies over an impervious siltstone bedrock. Water table is at ground surface and is hydrostatic in the clay layer. The initial vertical effective stress do'and maximum past pressure profiles with depth are plotted in the Figure to the right. Initial void ratio e, -0.95. One- dimensional consolidation test results yielded the following:...
help please A square footing is founded at 3-ft depth below ground surface as shown in...
help please
A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
A trapezoidal masonry dam with vertical upstream face is 4.6 m high, 0.5m wide at the top and 3m wide at the base. Hydrostatic uplift varies from full hydrostatic pressure at the heel to zero at the toe. Find the depth of water if the pressure at the toe is twice the average pressure at the base. Wt. of masonry is 2,400 kg/m3 Find the height of water that could rise behind a rectangular masonry wall 2m thick and 5m...
A cncrie dam retaining 45 ft of water is shown in Pis 3-36 The specific (or unit) weight of the e S Assume there is hydrostatic uplift that varies uniformly from full hydrostatic ecand at tlee lhod of the dam to zero at the toc. Determine: (a) the factor of safety against sliding, if the . IKYO'l .sf Iri뎌 ion between the base of the dam and thefoundation soil is 04, (b) the factor of Na·lery arutama Emrturni.rg, and (c)...
4. An earth dam in Figure 3 composes of a uniform material. It has a horizontal drainage blanket at the base that extends from the downstream toe to a distance of 30 m. The embankment has a permeability of 2.0 x 10-6 m/s. The freeboard is 3.0 m. Draw the phreatic line and thus determine the seepage through the dam. 5. The specific weight of the dam shown in Figure 3 is 2.63, and the coefficient of friction between dam...
When calculating the complete vector on the central section of
the dam wall, do you include the 8m for the radial gates? Also, how
do you calculate the length of the sides for the pressure prism of
the uplift? The face is 142 + 8, is the other side 142/sin57?
Question 2 A large concrete gravity dam, storing water, has a central drum gate and four (4) radial gates installed on its central spillway section to control releases from the...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the flow net is cons channel and 8 isted of 3 fNow rops, calculate: a) The rate of seepage under the dam in ft /sec/ft. b) Pore water pressure at points A, C, and D in Ib/ft. c) The uplift force in lb/ft at the base of the dam due to water pressure C use points C and D). 20
11. A vertical square hatch (3 ft by 3 ft) is located on the side of a tank containing water (unit wt 62.4 lb/ ft). The top edge of the hatch is 4 feet below the water surface in the tank. Find the depth to the centroid of the hatch and the resultant hydrostatic force acting on it. 12. Find the depth to the center of pressure of the hatch in Problem 11.
I’ve been racking my brain this one. My book showed the answer
on how the total force was derived. But I don’t get how it got to
that answer. Can someone help me please?
ethe ratio of the input work to the output work wi-F:aa-EN )-(20 )-1 t verifies that the work input and output are the same, as they must be to conserve energy. This result ,Example 15.2 The Force on a Dam lled to a height H behind...
Just 1,2and3
Then, h is computed as follows. cos-=- 154.5 2.0-h 2.0 (Answer) h= 1.56 ft. PROBLEMS T What is the pressure at the bottom of Sunfish Pond, which has a depth of 350 feet? 2. A swimming pool has depths of 4.0 feet and 12.0 feet at the shallow and deep ends, respectively. Find the pressure in lb/ft2 at each end. 3. A reservoir of water is connected to a 12-inch-diameter pipe that is 50 feet long and capped...
QO vreme (b/n) (6) 3. A 40 ft layer of silty clay is overlain by 5ft of 1000 2000 3000 4000 sand. The base of the clay layer lies over an impervious siltstone bedrock. Water table is at ground surface and is hydrostatic in the clay layer. The initial vertical effective stress do'and maximum past pressure profiles with depth are plotted in the Figure to the right. Initial void ratio e, -0.95. One- dimensional consolidation test results yielded the following:...
help please
A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
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