H.W 2: _Find the collapse load (Wu) for the isotropic slab shown below by using yield line theory. Assume m* = m² = 25 kN..m 6 m 4 m 3 m
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- 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. 108Determine the allowable shear stress if W= 33,813lb.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, at what distance, in meters, from the left end will the shear in the slab be equal to zero?
- 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.If FA = 40 kN and FB = 35 kN, determine the magnitude of the resultant force and specify the location of its point of application (x, y) on the slab.(a) Calculate the width of the wall that is compulsory to prevent the wall from sliding. Use yconcrete = 23.0 kn/m3, u = 0.75, FSS = 1.5. (b) Calculate the factor of safety against overturning. Neglect uplift pressure. Use 2 decimal places in every solved value.
- For the masonry dam shown, the hydrostatic uplift varies from 20% hydrostatic pressure at the heel to zero at the toe. The specific gravity of masonry is 2.4. If μ = 0.60, calculate “b” if factor of safety against sliding is 1.50Calculate the width of the concrete wall that is necessary to prevent the wall from sliding and the horizontal reaction acting on the system, Rx. The unit weight of the concrete is 23.6 kN/m^3 and the coefficient of friction between the base of the wall and the foundation soil is 0.42. Use 1.5 as the factor of safety against sliding. Will it also be safe from over turning?Q1- A wall foundation( 1.3) m wide located at a depth of 0.8 m on a saturated soil hasaφ=26o,c=38kN/m2,γsat =19.90kN/m3andW.Tlocatedatadepthof0.8m. Calculate the allowable bearing capacity if the F.S = 3.5 and draw the pressure distribution under the foundation with a labeled sketch.
- e. Location of the total earth thrust from the base of wall (in meter) ya = f. Minimum width B (in meter) of wall to be safe against sliding if the mobilized friction angle at the base of wall is 25o and factor of safety against sliding is 1.5 (minimum). Consider 24 kN/m3 as the unit weight of concrete. B = Thankyou pleaseA 6 m x 9 m rectangular footing xarrying a uniform of 288 kPa is applied to the ground surface.. Compute the total vertical stress in Kpa due to the uniform load at a depth at a depth of 6 m below the center of the loaded area if unit weight of soil is 18.30 kN/m^3. use the influence coefficient method. a. 232.49 b. 714 c. 144.8 d. 60A 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