Chapter 14, Problem 14.9P

Readings on a rod held at two points and B, 75 m apart, are 2.965 m and 1.295 m, respectively. Determine the rod reading at points on line AB which are 25 m and 45 m from A. Assume that there is a uniform gradient along line AB

A concrete dam is going to be built on a silty/clayey sand stratum overlaying an impermeable bedrock as shown in figure below to provide a water reservoir. What is the uplift pressure in point 2?  A. 22.2kPA B.27.2KPa C.29.2kPA

A 45° slope as shown in figure has been excavated to a depth of 6 m in a saturated clay having the following properties Cu= 50 kN/m², qu=0° and y = 19 kN/m³ Determine the factor of safety. [Take area of wedge = 39 m²]

Figure 2 shows the cross-section of a 7m-wide, 2.5m-deep excavation that will be used to build a large sewer line. The excavation is supported by sheet pile walls that extend through layers of sand layers. The friction angle of the sand 1 and sand 2 is 30° and 35°, respectively. Explain your assumptions. Draw the earth pressure diagrams (some of the earth pressures will be function of “d”, embedment depth). Find the embedment depth “d” using the simplified method. Find the maximum moment on the wall and minimum section modulus required.

1. A vertical cut is made through a homogeneous soil mass (c=20 kPa,ϕ=20°,γ=16.50 ?? ?3 ⁄ ). Estimate thesafe depth of the cut, taking a factor of safety of 2 using Culmann’s method

For a railway track 7 m high embankment is required. The clay to be used for the embankment was found to have c = 20 kN/m2and unit weight = 19 kN/m3 Compute the critical maximum side slope angle for the embankment if a hard rocky stratum was found 3.5 m below the ground level. Assume ϕ for the clay equal to zero. The following values are given from Taylor's chart for depth factor D = 1.5 :

It is required to design a cantilever retaining wall to retain a 5.0 m high sandy backfill. The dimensions of the cantilever wall are shown in Figure 15.52 along with the soil properties. Check the stability with respect to sliding and overturning, based on the active earth pressures determined, usinga. Coulomb's earth pressure theory (δ' = 24°), andb. Rankine's earth pressure theory.The unit weight of concrete is 24 .0 kN/m3

A concrete dam retaining water is shown. If the specific weight of the concrete is 23.54 kN/m3, find the factor of safety against sliding. Assume there is no hydrostatic uplift and that the coefficient of friction between dam and foundation soil is 0.48.   4.331 3.441 0.443 1.344

Find elvation by Rise and fall method .