A group of 9 friction piles, 10 m long is used as a foundation for a bridge pier. The piles used are 30 cm in diameter with centre to centre spacing of 0.9 m. The sub soil consists of clay with unconfined compressive strength of 1.5 kg/cm2. The efficiency for pile group will be (Take a = 0.9)

Q: Example 3 A 12 m prestressed concrete pile 450 mm square is installed in a clay with water table at…

A: given- 12 m prestressed concrete pile450 mm squareclay with water table at 5 m depthupper clay layer…

Q: The wooden pile shown in the figure has a diameter of 90 mm and is subjected to a load of P = 60 kN.…

A:

Q: A 600 mm diameter and 25 m long driven concrete pile carries a column load of 1200 kN. It is…

A: The length of the pile is .The diameter of the piles is .Total column load is .Shaft resistance is…

Q: 12.1 A 1500 kN load was applied on two 20 m long and 500 mm diameter piles that were instrumented…

A:

Q: Find the force F in the image below such that the deep pile foundation under the structure frame…

A: Find Force F

Q: o Given: A earth pile with L, E, and A known and constant F Y X (L-x) steel pile soil f =…

A:

Q: Redo Problem 9.23 assuming that the water table coincides with the top of the fill and that…

A: Solution Calculate the total downward drag force or negative skin friction using the following…

Q: A group of 9 piles of 31 cm diameter is arranged in a square configuration with a center-to-center…

A:

Q: In Hiley’s formula for driven piles i.e. R=E/(s+0.5c), why is a coefficient of 0.5 applied for the…

A: Answer Hilley's Formula is based on the principle of energy of conservation.

Q: Design Procedure D y = 100 lb/ft³ ka = 0.3 kp = 3.0 Pp Z₁ Zp 4 2 Za Z Ap Solve for D Pa 1 2 3 4 0…

A: A cantilever retaining sheet pile is given and active and passive earth pressure is acting on it.

Q: For the (4 x 4) pile group as shown in the figure, the settlement of pile group, in a normally…

A:

Q: A square pile group of 9 piles passes through a recently filled up material of 3.5 m depth. The…

A: A square pile group of 9 piles,Depth of pile = 9 m,Depth of soil fill =3.5 m,Diameter of the pile=30…

Q: A group of nine piles 300 mm in diameter is driven into a clay layer 16 m thick with rock below the…

A: Given:- D=300mm t =1 6m  L=9m Spaced = 500 mm c/c undrained shear strength = 100kN/m2  α=0.5, Eu =40…

Q: Determine the diameter of 70 ft long pile driven in the medium dense sand (Shown in Figure). Design…

A:

Q: The wooden pile shown in the figure has a diameter of 95 mm and is subjected to a load of P = 80 kN.…

A: Appreciate if there is detailed work with explanation and finds you helpful for ease of…

Q: concrete pile 1S.24 m long haVing fully embedded in a saturated clay layer for which y = 19.02…

A: Capacity of the pile shaft  isQ=∑ αCuPLusing tableα=0.54…

Q: A group pile in clay is shown in the figure below. Determine the maximum vertical load Qg be applied…

A: Different soils strata and their properties are given.  To find maximum permissible vertical load,…

Q: In a 16 (4 x4) piles group, the pile diameter is 0.4 m and center to center spacing of piles in the…

A:

Q: A cellular cofferdam of 8.4 m radius and 15 m height is proposed for flood protection. Properties of…

A: The factor of Safety: The factor of safety is the ratio of the yield stress to the working stress of…

Q: The wooden pile shown in the figure has a diameter of 100 mm and is subjected to a load of P = 70…

A: This question is related to the Strength of Material.

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.