If there is a layer of sand (lower layer) under artesian pressure (causes upward flow), calculate the excavation height H so that a negative effective stress is not generated at point A and therefore the heaving of the soil at that point. Use a unit weight of water w of 62.43 lb/ft3. Note: In this example we make a similarity with the permeameter with upward flow, therefore, H1=0 since from the bottom of the excavation (Na) upwards it remains dry (pumping is done), H2= 20ft-H, h=12ft-H2.

Q: The soil is having a saturated unit weight 18.0 kN/m and dry unit weight of 11 kN/m. The water table…

A: Saturated unit weight of soil = 18KN/m3 Dry unit weight of soil = 11KN/m3 Given two diagrams in Fig…

Q: Use the stress-strain curve, where shear stress and strain response are obtained at different…

A: Detailed solution is provided belowPlease read carefullyThank you. Explanation:Step 1:Step 2: Step…

Q: B=10m > q= 400 kN/m² 2 m- sand 10 m- clay Fig. 1

A:

Q: A 25 m thick layer of clay with a saturated unit weight of 21 kN/m³ is underlain by a layer of sand,…

A:

Q: ) You are working for a construction company and are building a school. In digging the foundation,…

A: Datum level (confining layer) = 25 m bgsPoint A: Water level = 7 m bgsPoint B: Water level = 7.5 m…

Q: the results of under drained traxial tests with pore water pressure measurement on compacted soil at…

A: For multiple question types, as per company policy, we are supposed to answer only the first…

Q: What is the coefficient of volume change (using change in void ratio method) for pressure range 100…

A:

Q: The lower sand layer in the soil profile shown below is in an artesian condition. Calculate: 2 a)…

A: Given data : It is a multipart problem from Soil Engineering/Mechanics or Geotechnical Engineering.…

Q: Exploratory drill hole 12m 8m 4.5 m An exploratory drill hole was made in a stiff saturated clay…

A: Given data: w=22%Gs=2.16 water table is 8m above the sand layer.

Q: 1. For the soil system presented below, calculate and draw diagrams of distributions of the total…

A: Answer  We know that effective stress(σ') is given by the difference between the Total stress(σ) and…

Q: The plan of a flexible circular loaded area is resisting the uniformly distributed load (q), 835…

A:

Q: 4.5m 1.5m 3m SokPa GWT Soil 1 Soil 2

A:

Q: The lower sand layer sand layer in the soil profile of Figure 3a is in an artesian condition.…

A:

Q: 5. Consider the embankment profile shown below. Determine the stress increase at points A and B.…

A: As both points A and B are at same depth hence the increase in stress level will be same as the…

Q: 3. For the assumption that L=30 m, H=22 m, h=15 m, D=3 m, ysat=19.3 kN/m³, and points a, b, c, d and…

A: Given are the following assumption in question  L= 30 m, H= 22 m, ht=15 m , D=3 m, Ysat= 19.3 KN/m3…

Q: As part of a construction project, a 11 m thick layer of clay is to be loaded with a temporary 5 m…

A:

Q: a b SOIL e

A:

Q: Plot the variation of total and effe pressure with depth for the soil pr condition: a) Initially…

A:

Q: Calculate the total stress, pore water pressure, and effectivestresses at points A, B, C, and D.

A: Total stressPore water pressureEffective stressA000B49.5 kN/m2049.5 kN/m2C99 kN/m2099 kN/m2D349.25…

Q: In a liquid limit test relationship between water content (w) and number of blows required to close…

A:

Q: It is known that the angle of internal friction for the soil comprising a granular deposit is 37°.…

A: Answer  We are given Angle of internal friction ϕ = 37o  Minor principal stress σ3 = 45 Kpa Let us…

Q: A flexible circular area is subjected to a uniformly distributed load of 150 kN/m2 (Figure 6.2). The…

A: stress by boussinesq's equation is given below ∆σz=q1-11+r2z23/2whereq=uniformly distributed load…

Q: Situation 6 - A consolidated drained triaxial test is conducted on a normally consolidated soil with…

A:

Q: 2m Dry zone Soil properties: Gs = 2.68 A e = 0.85 В 1.8 m Saturation zone (capillary rise) 0.9 m D…

A: The soil properties are given  Specific gravity of solids, Gs = 2.68 Void ratio, e =0.85 The total…

Q: an open excavation is to be made in the clay, how deep can the excavation Water in the drill hole…

A: ASKED: To determine the depth of excavation before heaving occurs.   Given, Thickness of the clay…

Q: An exploratory drill hole was made in a stiff saturated clay (see Figure 9.9). The sand layer…

A: Solution given next step

Q: P2039 kg/m 10 m 15 m P- 1888 kg/m Saturated clay L Sand

A: Given data  Depths Water level Saturated densities  Sand Saturated clay

Q: ) The effective shear strength parameters of a soil used in the construction of an earthen bund are:…

A: It is required to find the shear strength of soil.

Q: Estimate the ratio of the horizontal to the vertical permeability of these four strata. 2.45 m k₁ =…

A:

Q: Consider the figure shown: (65.73, 19.45, 1.13, 1.37) 0.70m 0.28 2im Soit çe-o.52) 3m Ga'- 2.72 n…

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: Refer to Problem 3.17. Determine the overconsolidation ratio for the clay. Use Eqs. (3.42) and…

A: Given:- σ'0 = 1340 lb/ft2. To find:- a)undrained shear strength of clay b)OCR

Q: Pre-consolidation stress at sample depth (kPa) = | |.... No decimals needed Based on the o'z0 value…

A: The soil at a depth experiences stress due to presence of overburden or other loads. These stress…

Q: An exploratory drill hole was made in a stiff saturated clay having a moisture content of 29% and G=…

A:

Q: You have been assigned to check the stability of a pond constructed in stiff saturated clay…

A: To findThe effective stress at A and determine the stability of cut under given conditionwater level…

Q: Along the depth for the floor profile given below; Plot graphically the total vertical stress, pore…

A: At point A-Total stress σ=q=30 kPaPore pressure μ=0Effective stress σ¯=σ-μ=30 kPaAt point B-Total…

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: Q1: An embarkment is constructed for an earth dam of 25 m high at a slope of 3:1. The properties of…

A: (1). To determine the factor of safety by the Bishop and Morgenstern method, you would need to…

Q: 1 A point load of 2000 KN is acting at the surface of a thick clay stratum. Compute the vertical…

A: Solution From boussinesq's equation, σz = IbQz2 Ib = 32π1+rz252 Substituting, z= 1m to 10 m and r=…

Q: H 10m 6m SATURATED CLAY Yo=19 kN/m A 2.5m SAND A175 kN/m Calculate the max. depth of cut H, that a)…

A: Given:-

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.