Asteel pipe pile having a diameter of 0.35 m is driven 15 m into a loose sand with a unit weight of 16.5 kN/m3 and an angle of internal friction of 33°. Compute the design axial downward loading, using the effective stress basic method of statical analysis with a factor of safety of 2.75.

Q: For a factor of safety of 2 on the passive resistance, determine the required depth of penetration…

A: Given,D' - initial trial depth of penetrationkp - Passive earth pressure coefficient.Dense sand (kp)…

Q: Using the data in Figure 2, calculate the vertical stress induced by the loading of the foundations…

A: Answer  To calculate the vertical stress induced by the loading of the foundations at the corner of…

Q: A cantilever sheet pile wall supports a horizontal backfill having a unit weight of 16 kN/m^3, angle…

A: Unit weight of soil (y) = 16 KN/m3 Friction angle ( Φ ) = 30° Back fill height (H) = 4m Coefficient…

Q: The flow net around a sheet pile wall is shown in the sketch. The properties of the soil are…

A:

Q: Determine the depth of embedment required for stability of the cantilever sheet pile wall shown by…

A: The values and diagram given in the question are as follows: Factor of safety(FOS)=1.3

Q: A 25 m deep bored pile has a shaft of 1 m diameter and enlarged base of 2.5 m diameter in the lower…

A: Length of bored pipe = 25m Shaft Diameter = 1m  Diameter of enlarged portion = 2.5 m  Area of…

Q: etermine the theoretical embedment depth for the given free support anchored sheet pile wall placed…

A: Angle of Internal friction ,  Cohesion ,  Natural Unit weight ,

Q: A driven pipe pile with an outside diameter of 450mm and a wall thickness of 7mm, 18 m long, is…

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: It is proposed to drive a cantilever sheet pile to a depth of h + d into dry granular soil to…

A: To plot d/h against the friction angle, we need to use soil mechanics principles to calculate the…

Q: Que. Find the depth of embedment of the cantilever sheet pile for a 6 m deep excavation in sandy…

A:

Q: A 400 mm square prestressed concrete pile is to be driven 19 m into the soil profile shown in Figure…

A: 400mm x 400mm square pileL = 19 mFS = 2.5

Q: 1 below The wall is anchored at a point 0.5 m below the top of the wall. The groundwater is at 4 m…

A: Ka=(1-sinϕ)/(1+sinϕ) Ka=(1-sin35)/(1+sin35)=0.27 Kp=(1+sin35)/(1-sin35)=3.69 Kp=3.69 Factor of…

Q: A circular pile with a diameter of 400 mm was driven to a depth of 12 meters into the normally…

A:

Q: Figure below shows the cross-section of an excavation which is to be made alongside a river. Write…

A: To find -Depth to which water in the trench can be reduced before instability occurs.

Q: A circular pile having a diameter of 0.35 m is 15.0 m long which is embedded in a layer of dense…

A: Answer (1) Calculation of Point bearing capacity of pile We know that the  Point bearing capacity of…

Q: Question- It is proposed to drive H-piles upto a depth of 7 m. The average surface area is 3 m² per…

A: Given- depth=7 msurface area=3 m2/lengthfriction angle=32oγ=16 kN/m3 & 19 kN/m3

Q: Figure 1 shows a cross-section through an excavation in a deep sand deposit. The site engineer…

A:

Q: A large sign is to be supported on two steel poles, each of which will be supported by a 500 mm…

A: GIVEN- D=500mmh=8mV=5.4 KNF=3.0

Q: A circular pile having a diameter of 0.45 m is 10 m long is embedded in a layer of loose sand with…

A: d=0.45 mL=10 mγ= 17.6 kN/cu.mγsat= 20.4 kN/cu.mϕ= 34°FOS= 3Nq= 79Depth of water table =3 mK= 1.15 To…

Q: A structure is to be supported on a 15-m square mat foundation. The average contact pressure is 100…

A: Compressive stress is the force that deforms the material in a way that reduces the volume of the…

Q: Problem-Shear strength A vane of 12 cm long and 10 cm diameter was pressed into deep soft clay at…

A: Given data- Length/Height of the vane H=12 cm, Diameter D=10 cm, Torque T=50 N-m, To Find- The…

Q: An anchored sheet pile is to support a mass of cohesionless soil up to a height of 6 m above ground…

A: Given- cohesionless soil height=6 mspacing of anchor=1 munit weight of soil=21 kN/m3angle of…

Q: Design a pile group consisting of R mm carrying a total load of 2000 kM consists of a deposit of…

A: Column size- 750mmx750mm P-2000kN Cc=0.1 eo =0.9 γ=21kN/m3 C=40 kN/m2 Fos=2.5 α=0.7 D=40mm

Q: 3 m CLAY 1.5 m A 2.5 m 8 m 2.5 m 1.5 m

A: Shallow excavation or the surrounding soil can be supported by the piles driving into the ground…

Q: A vertical sheet piled wall is shown in Fig. below, the properties of the soil both behind and front…

A:

Q: 5. A vertical sheet pile supports a horizontal backfill having a height of 4.5 m. The backfill has…

A:

Q: A large sign is to be supported on two steel poles, each of the poles which will be supported by a…

A:

Q: A concrete pile with a rectangular shape with a base of 40 cm is built in saturated sand. Find the…

A: In order to calculate tension bearing capacity of the given pile using  β-method we have T = fs*Ap +…

Q: What is the water pressure at C as the back side of the wall for the sheet pile case shown below?

A: Data given Find: water pressure at C as the back side of the wall for the sheet pile

Q: Assuming a sheet pile wall is constructed to retain 12.5m of soil, as shown in Figure 2, and the…

A:

Q: D 7.0m. 2.0m Yt = 16.5 kN/m³ $' = 30° Loose sand fill: Yt = 19.5 kN/m3 $' = 30° Dense sand: Yt = 21…

A: The surcharge is equal to 10 KPa.Unit weight of water = 10 KN/m³for loose sand = 0.3 and for dense…

Q: For the pile cap shown, find the maximum allowable load (V) if F.S. = 2 and maximum allowable…

A:

Q: Check the pile load of the Railroad Bridge of (hilla) for 4000 KN with pile diameter (1 m). The…

A:

Q: A 10.5m deep excavation in clay is to be retained with an 18m long sheet pile wall. The excavation…

A: H=10.5 msheet pile (H) = 18 mTo find- Apparent pressure diagram

Q: A large sign is to be supported on two steel poles, each of the poles which will be supported by a…

A: GIVEN- D=500mmh=8mV=5.4 KNF=3.0

Q: The length of a horizontal floor is 14 m and a 3.5 m deep vertical sheet pile is attached at its D/S…

A: Given,  length of the floor =14 m depth =3.5 m sheet is attached to D/S end Head of the water =4 m…

Q: n-situ stresses - Seepage condition xample: For the sheet pile which uried in sandy soil ,shown in…

A: The given data is: The water level is situated at the depth=2 m Assume, the dry unit weight of the…

Q: Determine the penetration depth for a 30 cm dia concrete pile which is required to carry a load of…

A: Given data:                            Try the embedded length as 14 m for the allowable load for a…

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.