A vertical cut has been made into a homogeneous soil as depicted in the figure. What should the depth of the cut (H) be in metres so that the factor of safety for the failure plane shown is equal to 1.5? The failure plane is at an angle of 30° from the horizontal direction and the ground water level is below this plane. Assume undrained conditions for this question.

Q: A hole was made in a stiff saturated soil having a Gs = 2.71 and moisture content of 0.30. The sand…

A: Given Gs = 2.71 w = 0.3 Water level in the hole is 6.3 m

Q: Figure shows an embankment consisting of two soils with the given soil properties. There is no…

A: It is given that :

Q: .A layer of saturated clay is 10 m thick, the lower boundary being impermeable; an embankment is to…

A:

Q: An excavation is rapidly made on site as depicted in the Figure below. The soil wedge above the…

A:

Q: Ox (psi) 2000 To (Cohesion) (psi) 1000 50 Oy (psi) 1800 (Internal friction angle), º Po (psi) 1000…

A: Given; = 2000 psi σy = 1800 psi Po = 1000 psi

Q: 5. A large (200-ft-square) structure is to be built on a downtown site where subsurface condi- tions…

A: (6) Consider the diagram of structure;

Q: 43. A footing 3 m x 3 m (10 ft x 10 ft) is designed to carry a 200-tonne (220-ton) load. Find the…

A:

Q: The flow net around a sheet pile wall is shown in the

A:

Q: A site associated with an excavation project is underlain by a 6m thick sand layer with unit weights…

A: Time factor T is calculated as  ; T = Cv td2  where ; Cv = Coefficient of consolidation = 0.018 m2…

Q: The standard penetration test results of a sand deposit at a certain site are given below in tabular…

A: Given: SPT data of a sand deposit is as follows Deth(m) Nf (blows/30 cm) 1.5 8 3 7 4.5 12…

Q: A half-closed clay layer is 8m thick and it can be assumed that the coefficients of consolidation in…

A: Given data coefficients of consolidation in both the vertical and horizontal directions are the same…

Q: Q6/ [A] For the soil profile shown below, calculate and show a plot of total stresses (vertical and…

A: Figure showing soil profile upto depth of  9 m is given. We need to calculate and plot total stress,…

Q: A vertical cut is made in a purely cohesive soil with a volumetric weight of ym = 1.90 cohesion of…

A:

Q: 2. For the sample below of a 5 ft radius: a) calculate hydraulic gradients for all three soil…

A: Data given k1 = 0.006 in/sec k2 = 0.003 in/sec k3 = 0.016  in/sec γsat-1 = 115 lb/ft3 γsat-2 = 125…

Q: A cut is made into a homogeneous soil as depicted in the figure below, at an angle of 60° with the…

A: To determine:Resisting shear force

Q: You are required to analyse a slope stability problem using the Swedish method for failure along the…

A: γ = 10 kN/m3 W1 = 53.5, W2 = 141.3, W3 = 199.6, W4= 224.8, W5= 206.3, W6 = 108.2. c = (40 + 2x) kPa…

Q: A cut slope was excavated in sand. The slope is shown in following attachment .

A: According to lacey silt is kept in suspension by the vertical component of eddies which are…

Q: The figure below shows a proposed site where an excavation will be made. The 12 ft layer of sand…

A: Thickness of clay (H) = 30 ft Cr = 0.035

Q: Circular precast concrete piles with 60 cm in diameter will be driven to a tip penetration of 30 m.…

A: Circular precast concrete piles with 60 cm in diameter will be driven to a tip penetration of 30 m.…

Q: (d) What is the maximum horizontal shear stress that the soil at Point A can take before failure?…

A: Given,  γd = 16 kN/m3   γsat = 20 kN/m3   γw = 10 kN/m3  ϕ = 32o

Q: Part of an on-site investigation for a geotechnical study where a reservoir will be built…

A: solid mechanics : The behaviour of soils is described by soil mechanics, a part of soil physics and…

Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.