A wall footing is shown. The properties of soil and concrete are as follows: Unit Weight of concrete = 24 kN/m³ Unit weight of soil = 16 kN/m³ Allowable soil pressure = 200 kPa PDL = 200 kN/m PLL = 180 kN/m fc’= 28 MPa fy = 280 MPa 1. Which of the following most nearly gives the effective soil pressure if the allowable soil pressure is 200 kPa. Hint: The effective soil pressure is the remaining pressure available to supports the loads after the effects of the soil and concrete weighs are subtracted. a. 120 kPa b. 154 kPa c. 178 kPa d. 204 kPa 2. Which of the following most nearly gives the minimum width of footing such that the effective soil pressure will not exceed? a. 2.78 m b. 3.67 m c. 4.24 m d. 5.10 m 3. Which of the following most nearly gives the ultimate shear due to factored loads acting on the critical section? a. 180 kN b. 260 kN c. 224 kN d. 281 kN
A wall footing is shown. The properties of soil and concrete are as follows: Unit Weight of concrete = 24 kN/m³ Unit weight of soil = 16 kN/m³ Allowable soil pressure = 200 kPa PDL = 200 kN/m PLL = 180 kN/m fc’= 28 MPa fy = 280 MPa 1. Which of the following most nearly gives the effective soil pressure if the allowable soil pressure is 200 kPa. Hint: The effective soil pressure is the remaining pressure available to supports the loads after the effects of the soil and concrete weighs are subtracted. a. 120 kPa b. 154 kPa c. 178 kPa d. 204 kPa 2. Which of the following most nearly gives the minimum width of footing such that the effective soil pressure will not exceed? a. 2.78 m b. 3.67 m c. 4.24 m d. 5.10 m 3. Which of the following most nearly gives the ultimate shear due to factored loads acting on the critical section? a. 180 kN b. 260 kN c. 224 kN d. 281 kN
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A wall footing is shown. The properties of soil and concrete are as follows:
Unit Weight of concrete = 24 kN/m³
Unit weight of soil = 16 kN/m³
Allowable soil pressure = 200 kPa
PDL = 200 kN/m
PLL = 180 kN/m
fc’= 28 MPa
fy = 280 MPa
1. Which of the following most nearly gives the effective soil pressure if the allowable soil pressure is 200 kPa. Hint: The effective soil pressure is the remaining pressure available to supports the loads after the effects of the soil and concrete weighs are subtracted.
a. 120 kPa
b. 154 kPa
c. 178 kPa
d. 204 kPa
2. Which of the following most nearly gives the minimum width of footing such that the effective soil pressure will not exceed?
a. 2.78 m
b. 3.67 m
c. 4.24 m
d. 5.10 m
3. Which of the following most nearly gives the ultimate shear due to factored loads acting on the critical section?
a. 180 kN
b. 260 kN
c. 224 kN
d. 281 kN
Transcribed Image Text:Pa= 200 KN/m
Pu= 180 KN/m
H= 30 KN/m
Ho = 60 KN/m
300 mm
0.3 m
1.2 m
0.46 m
0.39 m
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