excavation is to be made in subsoil conditions shown in the figure below. Assuming that the head loss in coarse sand layer at xx to be 10% of head causing flow. What should be the minimum depth of water that has to be left in the pit in order to have a factor of safety of 2.0 against boiling.

Q: The hydraulic conductivity of a sand at a void ratio of 0.71 is 0.044 cm/sec. Estimate the hydraulic…

A: Given:Hydraulic conductivityk1=0.044 cm/s at a  void ratioe1=0.71e2=0.55

Q: From the figure shown, H₁ = 0.60, H₂ = 0.90 m. and h = 0.45 m. The sand has a saturated unit weight…

A:

Q: Q.4) Figure shows a clean sand having a permeability of 0.075 cm/s and a void ratio of 0.62 placed…

A:

Q: A double drain consolidation test was performed on a sample of marine clay. The thickness of the…

A: Double drainH = 50 mmk = 1.753x10-8 m/min = 300 KN/m2  = 500 KN/m2 e1 = 0.42e2 = 0.3

Q: 5. A falling head permeability was performed on a clayey soils. The initial hydraulic head was 900mm…

A:

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

A:

Q: CVE 331: Theoretical hydraulic conductivity calculation ki Problem 1: The hydraulic conductivity of…

A: To solve with the help of relation between hydraulic conductivity and void ratio

Q: ive permeability functions, compute the ansition zone as S, varies from 80% to S ing values:

A: 2 T 75 dynes /cm=75×10-5/10-2 = 75×10-3 N/m     2πrT cos θ =(πr2 h) ρg⇒ r =2Tcosθhρg…

Q: 4. Is Turbulent Flow Possible? Water flows through sand with an average particle size of 0.70 mm.…

A: given that is  Average particle size              =0.70mm Water temperature at sub surface  150C…

Q: If grouting tubes of 100 mm diameter are used to grout a stratum of dense sand (n=30%, k = 5*10…

A: Introduction The abandonment grout, also known as pipelines grouting as well as pipe grouting in…

Q: 2.11 A sand has the following: Do = 0.2 mm, D = 0.4 mm, and void ratio e = 0.6. a. Determine the…

A:

Q: Given that the clay layer drains on both its bottom and top sides as shown (a) Determine the…

A:

Q: A saturated silty clay encountered in a deep excavation is found to have a water content of 21.7%.…

A:

Q: For a constant head laboratory permeability test on fine sand, the following values are given:…

A:

Q: For a constant head laboratory permeability test on a fine sand, the following are given: Length of…

A:

Q: The following are the results of a consolidation tests for a clay sample that drained on the top and…

A: Given data  P1= 2000 psf and e1= 0.75  P2= 4000 psf and e2= 0.71  Thickness of clay layer = 1 "…

Q: The results of a constant head permeability test for a fine sand are as follows: Diameter of the…

A:

Q: 4. For a normally consolidated clay, the following values are given. k (cm/sec) 0.45 x 106 e 0.78…

A:

Q: 1. (30 pts) The soil profile shown below consists of 10 meters of sandy silt overlying gravel. The…

A: Step 1:Step 2: Step 3: Step 4:

Q: t that will cause boiling fo 55, 0.7, and 0.8.

A: Given data-  Specific gravity (G) = 2.66  Void ratios (e) = 0.35, 0.45,0.55,0.7,0.8

Q: For a normally consolidated clay soil, the following values are given Void Ratio K (cm/sec) 0.302 x…

A:

Q: a consolidated drained trial test was conducted on a normally consolidated clay with majo minor…

A:

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: 3. A layered soil deposit is shown in the figure below with anisotropic values of the coefficient of…

A:

Q: A bed of uniform sand having particle size 0.6 mm and specific gravity as 2.68 has porosity 0.42.…

A:

Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

A:

Q: glass container with pervious bottom containing fine sand in loose state (void ratio 0.8) is…

A:

Q: A sand sample of 35 cm² cross section head permeameter. Under a head of 6 weight of sand used for…

A:

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

A:

Q: A 3 meter thick fill was placed over a 9 meter thick compressible clay. Underlying the clay layer is…

A: Thickness of fill = 3 mUnderlying the clay layer is a very hard impermeable clay.The diameter of the…

Q: For a constant head laboratory permeability test on a fine sand, the following are given: Length of…

A: ischrge velocity is given byQ=kiAv=kisov=QAi=headlengthi=450mm250mm

Q: For the conditions show below, calculate the safety factor of the clay against bottom blow-up after…

A:

Q: A layered soil is shown in following figure. a) Estimate the hydraulic conductivity for flow in the…

A: Given data of soil  Assume  K1 = 10-3 cm/sec  K2 = 2 *10-4 cm/sec  K3 = 10-5 cm/sec  K4 = 2 *10-3…

Q: A vertical sand column of length 100 cm and cross section area of 150 cm² is allowing the water to…

A: Calculate the (a) rate of flow, (b) the Darcy velocity and (c) the average velocity.

Q: b. Consider the downward flow of water through a layer of sand in a tank shown below. For the sand,…

A:

Q: H, - 4 m e- 0.6 G, = 2.65 Groundwater table H; = 3 m e- 0.52 G, = 2.68 C. ーミーーミー

A:

Q: 2. Estimate the hydraulic conductivity (in cm/sec) of a poorly graded sand with the following…

A:

Q: A standard penetration test is carried out in sand where the efficiency of the hammer nH =70%. If…

A:

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.