A square concrete pile of 10 m length is driven into a deep layer of uniform homogeneous clay. The average unconfined compressive strength of the clay, determined through laboratory tests on undisturbed samples extracted from the clay layer, is 100 kPa. If the ultimate compressive load capacity of the driven pile is 632 kN, the required width of the pile is mm. (in integer) (Bearing capacity factor Nc = 9; adhesion factor a = 1 = 0.7)

A square concrete pile of 10 m length is driven into a deep layer of uniform homogeneous clay. The average unconfined compressive strength of the clay, determined through laboratory tests on undisturbed samples extracted from the clay layer, is 100 kPa. If the ultimate compressive load capacity of the driven pile is 632 kN, the required width of the pile is mm. (in integer) (Bearing capacity factor Nc = 9; adhesion factor a = 1 = 0.7)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

12.10 A concrete pile 15.24 m long having a cross section of 406 mm × 406 mm is fully embedded in a saturated clay layer for which Ysat = 19.02 kN/m³, p = 0, and c₂ = 76.7 kN/m². Determine the allowable load that the pile can carry. (Let FS = 3.) Use the a method Eq. (12.61) and Table 12.11 to estimate the skin friction and Vesic's method for point load estimation.
A square pile of section 30 cm x 30 cm and length 10 m penetrates a deposit of clay having c = 50 kN/m² and the adhesion factor = 0.8. The load carried by the pile shaft only is
A 10m long and 0.8m diameter precast concrete pile is driven into a saturated clay deposit as shown in the figure below. The groundwater table is at the ground surface. For the ratio of the undrained shear strength to vertical effective pressure is approximated as follows: = 0.11 + 0.0037(PI) NC (9- 9 (OCR)8 OC Determine the bearing capacity for the pile by the a) Alpha (a) method. b) Lambda (A) method Depth, m Layer 1 OCR = 5, Yat = 19.5 kN/m³, Pl = 35 Layer 2 OCR = 1.5, %at = 19.0 kN/m, Pl = 25 Layer 3 OCR = 8, %at = 19.5 kN/m, Pl = 20 10 D, = 0.8 m D 10 m
Example For the building shown in the figure below , the load was (ql=150 kN/m?), after 2.0 year the load becomes (q2=200 kN/m²) due to construction of new stories fined the total consolidation settlement under point A. 7 m 3.5 m Plan 7 m 3.5 m A 1 m Sand soil y-18.5 kN/m? , Yat. 20 kN/m WT ip-0.8 1m Profile 1 m Clay soil Y 21 kN/m? , Pc=80 kN/m? ,Cv=4 m?/year, Cc=0.4 , Ca= 0.015 , e=0.5 3 m
Q- A pile of 0.50 m diameter and of length 10 m is embedded in a deposit of clay. The undrained strength parameters of the clay are cohesion = 60 kN/m² and the angle of internal friction = 0. Find the skin friction capacity (kN) of the pile for an adhesion factor of 0.6.
Problem 2 6m m 3m 0.75m 0.75m sharon 0.75m 0.75m C=42.81 kpe 0.85 C-57.40 kpa a=0.75 C-95.76 kpa a=0.5 No = 8 A nine-pile group composed of 0.30m diameter pipe piles is embedded 15m in clay soil with conditions indicated by the sketch. Determine the following: a. Capacity if piles acting individually b. Total capacity if piles act as a group c. Design load if factor of safety is 3.
The following results were obtained from CU tests on a clay soil that is the foundation material for an embankment. 03 (kPa) 300 400 600 0₁-03 (kPa) 331 420 487 Au (kPa) 111 160 322 (a) Determine the total and effective principal stresses for all three tests (You may summarize them in a table). (b) Recommend the shear strength parameters to be used for short-term and long-term analyses. The maximum confining pressure (cell pressure) at the depth of interest is 300 kPa. (Note: the clay is a normally consolidated one).
layer. 2. A project with excavation and construction stages will take place at your site. The profile contains a saturated clay On March 1, the effective stress at point A (in the middle of the clay layer) is 150 kPa, and the overconsolidation ratio is 1. On April 1, the effective stress at point A is 140 kPa. On May 1, the effective overconsolidation ratio on May 1? Show your work and circle your answer. stress at point A is 290 kPa. What is the
Q1: Determine the allowable load capacity for the driven pile of 0.6 m diameter embedded in a layered soil as shown in the figure below, use F.S 2.0 , K, = 1.5 and tand =0.5? ELEV. 110 N.C.C W.T ELEV. 108 Cu =70 kPa Y = 17 kN/m3 a = 1, yw = 10 kN/m? ELEV. 102 O.C.C, Cu 180 kPa, y = 20 kN/m³ a = 0.45 ELEV. 98 Sandy Layer Yt = 19 kN/m3 Ø = 32° Nq = 23.18 ELEV. 90
The pile driver drives the 91.4 cm centers piles until the penetration under the last hammer blow is 2.54 cm in a quicksand (Bearing = 5.38 ton/m2). The driver’s 1-ton hammer drops 2.6 m. Piles are sawn off and surmounted by a concrete slab 91.4 cm thick. What average bearing power in Ton/m2, does this foundation provide?
7. A 12m long concrete pile with diameter = 0.45m is drilled into normally consolidated clay with S, = 90 kPa and friction angle = 32 degrees. The pile is loaded with 300 kN and in response to such loading, it settles 2.5mm. What is the mobilized short term end bearing resistance? Show your work and circle your answer.
QUESTION 5) A billboard supported by anchor plate with the help of four rivets to a concrete base as shown in the figure. A uniformly distributed load of 10 kN/m? acts on the 2m B 2m rectangular direction. So then, if the allowable shear stress plate along the perpendicular 10 kN/m for the rivet Tallow=55 MPa and the critical stress the crushing state determine the required rivet diameter that can be used for the safety of system. (Consider the only shear effect in the solution) for Oallow.z=110 MPа, 3m Rivet Concrete base Base plate Base plate Rivet 25 mm 50 mm Concrete base