Design a square spread footing to support an edge column 460mm x 460mm in dimension. The allowable soil pressure is 478.5 KPa, unit weight of soil is 20.4 KN/m³, unit weight of concrete is 23.5 KN/m³, fé = 21 MPa, fy = 414 MPa, 75mm clear cover and 25mm diameter rebars both ways. DL= 1070 KN & LL = 1410 KN DL LL 150mm concrete slab- 1.50 m

Design a square spread footing to support an edge column 460mm x 460mm in dimension. The allowable soil pressure is 478.5 KPa, unit weight of soil is 20.4 KN/m³, unit weight of concrete is 23.5 KN/m³, fé = 21 MPa, fy = 414 MPa, 75mm clear cover and 25mm diameter rebars both ways. DL= 1070 KN & LL = 1410 KN DL LL 150mm concrete slab- 1.50 m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A footing of size 2.5 m x 2.5 m and 500 mm thick resists characteristic axial loads of 800kN dead and 300 kN imposed from a 400 mm square column. The safe bearing pressure on the soil is 230 kN/m2 and the characteristic material strengths are fcu = 35 N/mm2, fy=460N/mm2. Density of concrete is 24 k N/m3. Cover to all reinforcement is 50 mm. Determine the design load b) Check whether the base pressure is safe c) Design the bending reinforcement, assuming 16 mm diameter bars.
QUESTION 3 A footing of size 2.5 m x 2.5 m and 450 mm thick resists characteristics axial loads of 500KN dead and 200 kN imposed from a 300mm square column. The safe bearing pressure on the soil is 230kN/m?. a. Check whether the base pressure is safe b. Design the bending reinforcement, assuming 16mm diameter bars c. Check the punching shear Further Design Information Characteristic strength of concrete (fm) = 35 N/mm? %3D Characteristic yield stress of steel (f;) 460 N/mm2 Cover to reinforcement = 75 mm Diameter of main bars = 16 mm Unit weight of concrete = 24 kN/m³
Show your solution and diagram. Design a square spread footing to support an edge column 460mm x 460mm in dimension. The allowable soil pressure is 478.5 KPa, unit weight of soil is 20.4 KN/m³, unit weight of concrete is 23.5 KN/m³, fć = 21 MPa, fy = 414 MPa, 75mm clear cover and 25mm diameter rebars both ways.
PROBLEM 1 A square footing 2.4m x 2.4m x 0.45m thick supports a rectangular column 0.35m x 0.40m at its center. Column loads at service condition are: DL = 680KN LL = 400KN Fc' = 20.70 Mpa Fy = 275 Mpa Concrete cover to centroid of steel reinforcement is 100mm. Calculate : 1. maximum wide beam shear stress 2. What is the maximum punching stress 3. Determine the number of 20mm diameter bars required for critical moment.
Design Data: Concrete cover 35 mm Assume foundation thickness is 560 mm Diameter of main reinforcement in both direction = 25 mm Dimension of footing are 2.25 m x 2.25 m 5.06 m DL = 1000 kN LL = 300 kN - 2.25 m
QUESTION 2 a. A column 425 mm x 425 mm carries a characteristic axial load of 800 kN dead and 300KN imposed. A footing size of 2800mm x 2800mm and thickness of 500mm has been proposed, The allowable bearing pressure of the soil is 200KN/m2. You are required to: (i) check the suitability of the size and design the base against bending, punching shear (ii) Show in a sketch the reinforcement details provided.
B. True-False Questions 1. Because it is so low in density, aluminum does not conduct heat well. ( ) 2. Combined footings are always used to save money when concrete costs are high. ( )
30) A rectangular footing 2.1 m x 3.6 m x 0.35 m thick supports a 300 mm square column at its center. Column loads are service conditions: DL = 346 kN LL = 231 kN f’c = 21 MPa fy = 415 MPa Concrete cover to the centroid of steel reinforcement = 100 mm Calculate the nominal punching shear stress in the slab. Write your final answer with 2 decimal places if the unit is MPA.
A rectangular footing 2.1 m x 3.6 m x 0.35 m thick supports a 300 mm square column at its center. Column loads are service conditions: DL = 346 kN LL = 231 kN f'c = 21 MPa fy = 415 MPa Concrete cover to the centroid of steel reinforcement = 100 mm Calculate the nominal punching shear stress in the slab. Write your final answer with 2 decimal places if the unit is MPA. Selected Answer: O 1.92 Correct Answer: 1.83 ±0.01
A rectangular footing 2.3 m x 3.6 m x 0.38 m thick supports a 300 mm square column at its center. Column loads are service conditions: DL= 306 kN LL = 241 kN Li Pc = 21 MPa fy = 415 MPa Concrete cover to the centroid of steel reinforcement = 100 mm Calculate the nominal punching shear stress in the slab. Write your final answer with 2 decimal places if the unit is MPA
1. Design a two-way slab having a dimension of 3m x 4m. The slab is to carry a uniform live load of 1900 Pa. Assume fc' fy = 27.6 MPa and 280 MPa for main bars. The slab is exposed to earth or weather. Use Unit weight of concrete yc = 23.5kN/m³ 3m 3m 3m 4m 4m 4m
A square footing 2.3 m x 0.35 m thick supports a 300 mm square column at its center. Column loads are service conditions: DL= 396 kN LL= 269 kN Pc= 21 MPa fy = 415 MPa Concrete cover to the centroid of steel reinforcement = 100 mm Calculate the nominal one way shear stress in the slab. Write your final answer with 2 decimal places if the unit is MPA