Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Question
Chapter 8, Problem 8.10P
a.
To determine
Find the increase in vertical stress at the depth
b.
To determine
Find the increase in vertical stress at the depth
c.
To determine
Find the increase in vertical stress at the depth
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A net load Q was applied on a rectangular flexible foundation. A point P is located inside the foundation soil with a vertical distance Z from the foundation bottom at center. The stress increase Δ? at Z caused by Q is always larger than zero.
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B. False
A rectangular concrete slab, 4.a m. x 5.d m. is shown in Figure 3.5, rests on the surface
of a soil mass. The load acting on the center of the slah is 1785KN.
Determine:
'The soil stress just below the slab.
;) The vertical stress increase at point A.
a.
b.
Plan
A
4.5 m
Cross Section
3.8 m
A
3.1 m
Figure 3.5
5.3 m
A butt weld is set on the cross section of an I-shaped
beam. The re are bending moment M ard sheao forne
V at the
speicing position, where Ma || 20 KN m
and v 374KN
The beam is made of Q355 b steel
and semi- automatic weld is used with welding
rod E50. The des ign value of the weld tensile
to
Strength f" is 260 N/mnm?. c heek whethe
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ET
3.
Chapter 8 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 8 - Four point loads with the same magnitude of P are...Ch. 8 - A point load of 500 kN is applied at the ground...Ch. 8 - A point load of 1000 kN is applied at the ground...Ch. 8 - A 10 ft diameter flexible loaded area is subjected...Ch. 8 - For the flexible loaded area in Problem 8.4, plot...Ch. 8 - Two line loads q1 and q2 of infinite lengths are...Ch. 8 - A 9 ft wide and infinitely long flexible strip...Ch. 8 - Figure P8.8 shows a flexible rectangular raft that...Ch. 8 - Prob. 8.9PCh. 8 - Prob. 8.10P
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Similar questions
- Three foundations are located next to each other (Fig 16). Determine the stress increases at A, B, and C at a depth of 2 m below the ground surface.arrow_forwardRefer to Figure P6.8. Using the procedure outlined in Section 6.8, determine the average stress increase in the clay layer below the center of the foundation due to the net foundation load of 50 ton.arrow_forwardQUESTION 2 A rectangular footing 1000 x 2000 mm shown below is subjected to a vertical point load of 600 kN acting at eccentricities ex = 200 mm and eyy = 100 mm, as show on the Figure below. Calculate the stresses at the corners A and D, and sketch the stress distribution along the face A-D. е 200 mm Vertical force = 600 kN B eyy =100 mm 1 m D. 2m Rectangular footing - Planearrow_forward
- 6.8 Refer to Figure P6.8. Using the procedure outlined in Section 6.8, determine the average stress increase in the clay layer below the center of the foundation due to the net foundation load of 50 ton. [Use Eq. (6.28).] 4:5 ft 3 ft 50 ton (net load) 10 ft 5 ft x 5 ft Sand y=100 lb/ft! Sand Yat=122 lb/ft³ Groundwater table Ysat ⇒120 lb/ft³ = 0.7 C=0.25 -C, 0,06 Preconsolidation pressure = 2000 lb/ft² Figure P6.8arrow_forward1. Given the soil profile below, determine the Total Stress and Effective Stress at points A, B, C, and D. CL 5ft y = 102 Ib/ft3 A • 9ft Ysat = 105 Ib/ft3 B 6ft SM C = 115 Ib/ft3 Ysat 12ft Darrow_forward5. A plinth with a shape of a frustum of a cone is made of a melted CHB or Concrete hollow blocks and form into a plinth. It has a specific weight of 4.42 metric slug/ft with a specific gravity of 3. Assuming it is at rest find the average normal stress acting in the mid-height of the plinth in psi. r= 304.8 mm R = 457.2 mm Mid-height = 1219.2 mm h = 2438.4 mm Harrow_forward
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