Q: A rigid shallow footing has the dimension of 1m x 1m, shown in the following figure. The depth of footing, mechanical properties of supporting soil and the load transmitted through the footing are shown in the figure. Determine shape factor (I) and depth factor (I).

Q: A rigid shallow footing has the dimension of 1m x 1m, shown in the following figure. The depth of footing, mechanical properties of supporting soil and the load transmitted through the footing are shown in the figure. Determine shape factor (I) and depth factor (I).

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.

Question

Q: A rigid shallow footing has the dimension of 1m x 1m, shown in the following figure. The
depth of footing, mechanical properties of supporting soil and the load transmitted through the
footing are shown in the figure. Determine shape factor (Is) and depth factor (I).
500 mm
E,= 6500 kN/m²
H₂=0.3
E, - 5000 kN/m²
1₂ = 0.3
E, 10000 kN/m
=
H₂ = 0.3
Ao = 200 kN/m²
0.0 m
3.0 m
5.0 m
8.0 m

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H← N M 1m QUESTION 2: Check if the base area of 2m x 2m is adequate for the footing under the loading shown in the figure. Allowable soil pressure is 0.25 MPa. N = 900 KN M = 150 kNm H=75kN
X=30 Pls answer this question correctly. Explain every portion and try keep handwriting good
X=30
11. Suppose the soil beneath the footing is now a sand with average SPT N60 of 28 (see below). Predict the footing settlement (in inches) using Meyerhof's formulas. 2 ft 18 ft 6 ft P = 72 kips Sand, y = 118 pcf Sand N60 = 28 Gravel
Suppose a building is supported on shallow foundation. The building has 4 Footing Group 1 footings, 4 Footing Group 2 footings and 1 Footing Group 3 footing. Dimension for Footing Group 1 is (length, width, depth) = (2.5 meter, 2.5 meter, 800 mm) Dimension for Footing Group 2 is (length, width, depth) = (2.8 meter, 2.8 meter, 1000 mm) Dimension for Footing Group 3 is (length, width, depth) = (3.2 meter, 3.2 meter, 1200 mm) Reinforcement orientation Footing Group 1: 16 mm diameter reinforcement @ 200 mm c/c in both directions, and top and bottom of the footing. Reinforcement orientation Footing Group 2: 16 mm diameter reinforcement @ 150 mm c/c in both directions, and top and bottom of the footing. Reinforcement orientation Footing Group 3: 16 mm diameter reinforcement @ 100 mm c/c in both directions, and top and bottom of the footing. Clear cover for column is 75 mm. Unit price of Concrete: 350 AUD/m3 Unit price of Steel: 2.0 AUD/kg Density of Steel: 8,000 kg/m3 Calculate…