Select the value of Cs to use for the edge of a 2'x20' flexible strip footing. Table 7-1 Values of C, for Foundations on Clay Soil of Infinite Depth¹ Shape Flexible foundation: Circular Square Rectangular: L/B= 2 L/B = 5 L/B = 10 Rigid foundation: Circular Square Rectangular: L/B = 2 L/B=5 L/B = 10 Center 1.00 1.12 1.53 2.10 2.56 0.79 0.82 1.12 1.60 2.00 Corner 0.56 0.76 1.05 1.28 - 0.82 1.12 1.60 2.00 Edge at Middle of Long Side 0.64 0.76 1.12 1.68 2.10 0.79 0.82 1.12 1.60 2.00 Average 0.85 0.95 1.30 1.82 2.24 0.79 0.82 1.12 1.60 2.00 ¹Soil depth extends greater than 10B. Source: D. F. McCarthy, Essentials of Soil Mechanics and Foundations, 6th ed., 2002. Reprinted by permission of Pearson Education, Upper Saddle River, NJ.

Select the value of Cs to use for the edge of a 2'x20' flexible strip footing. Table 7-1 Values of C, for Foundations on Clay Soil of Infinite Depth¹ Shape Flexible foundation: Circular Square Rectangular: L/B= 2 L/B = 5 L/B = 10 Rigid foundation: Circular Square Rectangular: L/B = 2 L/B=5 L/B = 10 Center 1.00 1.12 1.53 2.10 2.56 0.79 0.82 1.12 1.60 2.00 Corner 0.56 0.76 1.05 1.28 - 0.82 1.12 1.60 2.00 Edge at Middle of Long Side 0.64 0.76 1.12 1.68 2.10 0.79 0.82 1.12 1.60 2.00 Average 0.85 0.95 1.30 1.82 2.24 0.79 0.82 1.12 1.60 2.00 ¹Soil depth extends greater than 10B. Source: D. F. McCarthy, Essentials of Soil Mechanics and Foundations, 6th ed., 2002. Reprinted by permission of Pearson Education, Upper Saddle River, NJ.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

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Select the value of Cs to use for the edge of a 2'x20' flexible strip footing.
Table 7-1 Values of Cs for Foundations on Clay Soil of Infinite Depth¹
Shape
Flexible foundation:
Circular
Square
Rectangular:
L/B = 2
L/B = 5
L/B = 10
Rigid foundation:
Circular
Square
Rectangular:
L/B = 2
L/B = 5
L/B = 10
Center
1.00
1.12
1.53
2.10
2.56
0.79
0.82
1.12
1.60
2.00
Corner
0.56
0.76
1.05
1.28
0.82
1.12
1.60
2.00
Edge at Middle
of Long Side
0.64
0.76
1.12
1.68
2.10
0.79
0.82
1.12
1.60
2.00
Average
0.85
0.95
1.30
1.82
2.24
0.79
0.82
1.12
1.60
2.00
¹Soil depth extends greater than 10B.
Source: D. F. McCarthy, Essentials of Soil Mechanics and Foundations, 6th ed., 2002. Reprinted by permission of Pearson Education, Upper Saddle River, NJ.

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