Bundle: Principles Of Foundation Engineering, 9th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
9th Edition
ISBN: 9781337947060
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Question
Chapter 5, Problem 5.10P
(a)
To determine
Find the primary consolidation settlement.
(b)
To determine
Find the required duration for the preload surcharging.
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A5.2- A simply supported beam with the given cross-section, as shown in Figure 2, is subjected to
factored uniform load of 50 kN/m. The designer would like to cut-off 2-30M bars where they are no
longer required by the design.
Determine the cut-off point for 2-30M bars according to CSA 23.3 requirements.
Given: Concrete: Normal density with f'c = 30 MPa
Reinforcement: Uncoated rebars with fy = 400 MPa
Shear reinforcement is in excess of CSA 23.3 minimum requirement: 10M
Clear cover to the stirrups: 40 mm
Columns: 500 mm x 500 mm
9 m
W= 50 kN/m
Figure 2
h=600 mm
b=500 mm
Cross-section
As = 5-30M
1. Calculate the ultimate load carrying capacity of the pile tip driven into the soil profile shown
below:
G.W.T.
45'
Qapp
Soft Clay:
Ysat 100 pcf
Cu 500 psf, ou = 0°
平
12' Soil
Plug
Driven Steel Pipe Pile:
Outside Diameter = 2'
Inside Diameter = 1'11"
Hollow (soil plugged)
Note: Pile & soil profile
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Qp = ?
Please perform the tip capacity calculation two ways: For the first approach, assume that the
total vertical stress at the pile tip is balanced by the weight of the pile. For the second
approach, assume that the total vertical stress at the pile tip is not balanced by the weight of
the pile (which means you need to include the vertical total stress term). Please compare
your answers from these two analyses, examine some of your intermediate-stage calculation
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discuss whether or not the commonly used assumption about the total vertical stress at the
pile tip is a…
A6.2- Given a simply supported beam with the typical
cross-section as shown in the figure below. Assume interior
exposure for this beam. The beam properties are summarized
below.
a) Check if the beam section satisfies the CSA A23.3 cracking
control requirements. In your calculations, find f, accurately
based on the loading, and compare the results with f = 0.6 fy.
b) Find the deflection due to DL+LL at mid-span after 6
years.
Given: Concrete: Normal density with f'c = 25 MPa
Reinforcement: Uncoated rebars with fy = 400 MPa
Shear reinforcement: 10M
Maximum aggregate size: 20 mm
Clear cover to the stirrup: 30 mm
Clear spacing between the bars
=
35 mm
35 mm
30 mm
m
WDL= 20 kN/m
WLL= 15 kN/m
抖抖
b=400 mm
As = 8-25M
Cross-section
h=500 mm
Chapter 5 Solutions
Bundle: Principles Of Foundation Engineering, 9th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
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- A5.1- An unbraced column shown in Figure 1, column A-B with square cross-section is given. The column is subjected to Dead load (unfactored): PDL = 3000 kN, MDL-top = 85 kN.m, MDL-bo = -DL-bottom = 100 kN.m. = Assume the cross-section of column is constant from top to bottom, and all the beams have width = 300 mm and height 350 mm. Using f'c = 25 MPa, fy = 400 MPa, design the column and determine the ties spacing and arrangement. Use 25M or 30M bars for longitudinal reinforcement, and 10M bars for ties. Assume clear cover to be 40mm. The design p has to be between 0.01 and 0.02. Column maximum dimension can be 500mm. т 4.0m 7.0m 5.5m + 6.5m Figure 1 Barrow_forward7.43 Neglecting head losses, determine what horsepower the pump must deliver to produce the flow as shown. Here, the elevations at points A, B, C, and D are 124 ft, 161 ft, 110 ft, and 90 ft, respectively. The nozzle area is 0.10 ft². B Nozzle Water C D Problem 7.43arrow_forwardNOTE: Use areal methods only for V,M,N diagrams(Do NOT use the equations) (also draw the N diagram(s) for the entire structure)arrow_forward
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- A shallow foundation measuring 1 m × 2 m in plan is to be constructed over a normally consolidated sand layer. Given: D₁ = 1 m, №60 increases with depth, N 60 (in the depth of stress influence) = 11, Estimate the elastic settlement using Burland and Burbidge's method. (Enter your answer to three significant figures.) Se mm and Inet = 138 kN/m².arrow_forwardA continuous foundation on a deposit of sand layer is shown in the figure below along with the variation of the cone penetration resistance qc 1.5 m 0 2.5 m Sand 14 q= 195 kN/m² qe (kN/m²) 9 1750 93450 9c=2900 Depth (m) Assuming = 16 kN/m² and creep is at the end of ten years after construction, calculate the elastic settlement of the foundation using the strain influence factor method. Use the equations 22 Iz Es 0 | Se = C₁C2 (9) Az and Es = 3.5qc (for L/B> 10) (Enter your answer to three significant figures.) Se = mmarrow_forwardDetermine the stiffness matrices for the entire truss in the global co-ordinate system. Assume A=0.0015m2 and E=200GPa, indicate the degrees of freedom in all stiffness matricies.arrow_forward
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