A 20-ft-deep cut for a basement excavation is specified to be sloped at 1:2 (one horizontal to two vertical). The upper 40 ft of soil at the site consists of a homogeneous clay with a density of 90 pcf and an unconfined compressive strength averaging 2400 psf. The water table is at great depth. Can the cut be made? If so, what is the factor of safety for the slope? Is the slope safe enough for normal work to progress in the excavation without danger?

Q: Determine the total vertical stress, pore water pressure, and the effective stress of the soil mass…

A: Effective stress = total stress -pore water pressure Total stress =total unit weight *height pore…

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A:

Q: A vertical cut is to be made in a saturated clay with C = 18 KN/m2, 0 = 00 and y = 16 KN/m³. What is…

A: Given data : Cohesion (C)=18 KN/m2Angle of internal friction (ϕ)=0unit weight (γ)=16 KN/m3

Q: 2. For the purposes of calculating the maximum stress in a braced cut, what are the primary factors…

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A: Given- ϕ=100C=15 Kpaγ=18.5 Kn/m2

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Q: Cell Deviator Pore Stress Pressure pressure 200 kPa 400 kPa 600 kPa 117 kPa 242 kPa 367 kPa 110 kPa…

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Q: A cut of 5m is made in a 10m thick layer of stiff saturated clay which is underlain by a layer of…

A: According to given data   A cut of 5m is made in a 10m thick layer of stiff saturated clay which is…

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Q: An excavation is made with a vertical face in a clay soil which has C_{u} = 50kN /(m ^ 2) gamma_{1}…

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Q: Define the Vertical Stress Due to Embankment Loading ?

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Q: -> Find the preconsolidation pressure for curve below -> Find Compression Index, (Cc) and Swell…

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Q: A vertical cut is to be made in a saturated and submerged clay with c = 15 kN/m², Ysat = 18.5 kN/m³,…

A: Given data in question  Cohesion 15 kN/m2 Unit weight 18.5 kN/m3 Unit weight of water 10 kN/m3 To…

Q: " consider a braced cut excavation which is 45' deep and which has supports 17, 28' and 40'. The…

A: depth- 45'depth of support- 5',17',28' and 40'c=1100 psfγ=110 pcfspacing- 10 feetTo determine- a)…

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A: The capacity of a shovel (Q) = 6 cy The cost per hour including wages = $85 The swell percent = 60%…

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Q: A temporary excavation, with a 1 horizontal on 2 vertical slope, is to be performed in a stratum of…

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A: In anchored shoring applications, determining the vertical spacing between anchors is crucial to…

Q: A layer of fine sand exists over a stratum of impervious rock. The sand layer is 6.25m thick. The…

A: Permeability=K=0.18 m/secNet head causing the flow=H=1.25+2.5=3.75 m

Q: The combination core and blanket design of earth embankments is adapted to sites having : Select one…

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Q: (a) Lateral earth pressure distribution needed to evaluate overturning and sliding stability. (b) If…

A: Active earth pressure Active earth pressure is given by Pa = ka*σv' -2Cka ka = coefficient of active…

Q: Design a 275 ft long x 4.0 ft wide x 9.0 ft deep utility trench as a sloped excavation with no…

A: Given LxBxH =275ft x 4ft x 9ft Unconfined compressive strength of soil = 3.2 ksf= 153kpa

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.