SITUATION. A column 400 mm x 400 mm square is supported by a 3 mx 3 m isolated spread footing whose f'c is 21 MPa and is reinforced with 12 - 20 mm bars with fy = 414 MPa. The column carries a dead load of 800 kN and a live load of 600 kN. The allowable soil bearing pressure is 200 kPa. The base of the footing is 1.2 m below the grade. Assume weight of soil and concrete to be 16 kN/m3 and 24 kN/m3, respectively. The total depth of the footing is 600 mm with concrete cover of 75 mm. 2. Determine the wide beam shear stress at ultimate loads. A B C D 462.57 kPa 657.21 kPa 433.21 kPa 423.98 kPa SITUATION. A column 400 mm x 400 mm square is supported by a 3 mx 3 m isolated spread footing whose f'c is 21 MPa and is reinforced with 12-20 mm bars with fy = 414 MPa. The column carries a dead load of 800 kN and a live load of 600 kN. The allowable soil bearing pressure is 200 kPa. The base of the footing is 1.2 m below the grade. Assume weight of soil and concrete to be 16 kN/m3 and 24 kN/m3, respectively. The total depth of the footing is 600 mm with concrete cover of 75 mm. 3. Determine the punching shear stress at ultimate loads.

SITUATION. A column 400 mm x 400 mm square is supported by a 3 mx 3 m isolated spread footing whose f'c is 21 MPa and is reinforced with 12 - 20 mm bars with fy = 414 MPa. The column carries a dead load of 800 kN and a live load of 600 kN. The allowable soil bearing pressure is 200 kPa. The base of the footing is 1.2 m below the grade. Assume weight of soil and concrete to be 16 kN/m3 and 24 kN/m3, respectively. The total depth of the footing is 600 mm with concrete cover of 75 mm. 2. Determine the wide beam shear stress at ultimate loads. A B C D 462.57 kPa 657.21 kPa 433.21 kPa 423.98 kPa SITUATION. A column 400 mm x 400 mm square is supported by a 3 mx 3 m isolated spread footing whose f'c is 21 MPa and is reinforced with 12-20 mm bars with fy = 414 MPa. The column carries a dead load of 800 kN and a live load of 600 kN. The allowable soil bearing pressure is 200 kPa. The base of the footing is 1.2 m below the grade. Assume weight of soil and concrete to be 16 kN/m3 and 24 kN/m3, respectively. The total depth of the footing is 600 mm with concrete cover of 75 mm. 3. Determine the punching shear stress at ultimate loads.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter11: Load And Resistance Factor Design (lrfd)

Section: Chapter Questions

Problem 11.1P: A continuous foundation is required in a soil where c=10kN/m2, =26, and =19.0kN/m3. The depth of the...

See similar textbooks

Similar questions

Design a square pad footing with an overall depth of 600mm, cover to the reinforcements 50mm with 20mm diameter reinforcement bars in both directions. The footing carries a 400mm square column with a dead load of 1050KN and imposed load of 300KN. The safe bearing capacity of the soil is 170KN/m^2, fcu 30N/mm^2. Assume a unit weight of concrete to be 24KN/m^3 and footing weight 150KN
A square footing is proposed to be used to support a 500 mm x 395 mm RC column loaded with 666 kN dead load and 858 kN Ilive load. The bottom of the footing is 1.9 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 302 kPa. The thickness of the footing is 478 mm. f'.= 21 MPa and fy = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of concrete. What is the size of the footing required in mm?
SITUATION. A column 400 mm x 400 mm square is supported by a 3 mx 3 misolated spread footing whose fc is 21 MPa and is reinforced with 12 - 20 mm bars with fy = 414 MPa. The column carries a dead load of 800 kN and a live load of 600 kN. The allowable soil bearing pressure is 200 kPa. The base of the footing is 1.2 m below the grade. Assume weight of soil and concrete to be 16 kN/m3 and 24 kN/m3, respectively. The total depth of the footing is 600 mm with concrete cover of 75 mm. 2. Determine the wide beam shear stress at ultimate loads. A 462.57 kPa 657.21 kPa 433.21 kPa D 423.98 kPa
A 500 mm square concrete column carries factored ultimate column loads of PU = 580 kN andMU = 30 kN@m. The vertical service load is 490 kN. It is to be supported on a square footingwith f′c = 20 MPa and fy = 420 MPa. The soil has an allowable bearing pressure for bearingcapacity of 650 kPa (based on LRFD methods) and an allowable bearing stress for settlementof 280 kPa. The groundwater table is at a great depth. Determine the required footing, width,thickness, size of the flexural reinforcement, and show your design in a sketch.
3. A W16×50 steel column with a 22-inch square base plate is to be supported on a square spread footing. This column has factored the ultimate vertical column load of 320 k. The vertical service load is 250 k. The footing will be made of concrete with f'c = 2,500 lb/in² and reinforcing steel with fy = 60 k/in². The soil has an allowable bearing pressure for bearing capacity of 5,200 lb/ft² (based on LRFD methods) and allowable bearing stress for settlement of 3,400 lb/ft². The groundwater table is at a great depth. 3.A. Determine the required footing width after checking both the allowable bearing stress and serviceability (settlement) limit state. 3.B. Calculate the footing thickness after checking both the two-way and one-way shears. 3.C. Calculate the factored moment at the critical section. 3.D. Find the required steel area of the footing. 3.E. Compute the reinforcement ratio and check the minimum required steel. 3.F. Select the number and diameter of steel rebars and check the…
Answer Completely
3. A W16×50 steel column with a 22-inch square base plate is to be supported on a square spread footing. This column has factored the ultimate vertical column load of 320 k. The vertical service load is 250 k. The footing will be made of concrete with f' = 2,500 lb/in² and reinforcing steel with fy = 60 k/in². The soil has an allowable bearing pressure for bearing capacity of 5,200 lb/ft² (based on LRFD methods) and allowable bearing stress for settlement of 3,400 lb/ft². The groundwater table is at a great depth. 3.A. Determine the required footing width after checking both the allowable bearing stress and serviceability (settlement) limit state. 3.B. Calculate the footing thickness after checking both the two-way and one-way shears. 3.C. Calculate the factored moment at the critical section. 3.D. Find the required steel area of the footing. 3.E. Compute the reinforcement ratio and check the minimum required steel. 3.F. Select the number and diameter of steel rebars and…
I need the carrect answer as soon as possible please
Calculate the maximum factored load in kips that the square footing with B=6 ft can withstand under strength limit state and extreme event limit state?
A column 450 mm x 450 mm square supports a dead load of 1000 kN and a live load of 780 kN. The allowable soil bearing pressure is 240 kPa. The base of the footing is 1.5 m. below the grade. Assume weight of concrete to be 24 kN/m3 and that of soil to be 18 kN/m3. The total depth of footing is 600 mm with a steel covering of 100 mm. a. What is the dimension of the square footing? b. What is the safe depth of footing if f'c=21MPA?
A 600 mm x 600 mm column carries a total live load of 1200 kN and a total dead load of 1500 kN. The column is to be supported by a rectangular spread footing whose width is limited to 3 m and whose bottom is 2 m below the ground surface. Allowable soil bearing capacity at the base of the footing is 230 kPa. Unit weight of soil above footing is 16 kN/m³ and a unit weight of concrete is 23.5 kN/m³. Assume fc’ = 28 MPa and fy = 275 MPa. 1. Assuming thickness of footing to be 700 mm, determine the effective soil bearing capacity of the soil in kPa. a. 180.43 b. 207.12 c. 192.75 d. 186.55 2. Determine the required length of footing. a. 3.9 m b. 4.7 m c. 4.3 m d. 2.5 m 3. Determine the required depth of footing based on wide beam shear. a. 503 mm b. 376 mm c. 405 mm d. 577 mm 4. Determine the required depth of footing based on punching shear. a. 547…
A 3.6 m square footing is proposed to be used to support a 530 mm x 309 mm RC column loaded with 704 kN dead load and 530 kN live load. The bottom of the footing is 1.5 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 312 kPa. The thickness of the footing is 525 mm. f'.= 21 MPa and f, = 420 MPa. It is to be reinforced with 20 mm diameter. Use 24 kN/m3 as the unit weight of %3D concrete. Note: For two-way shear, use an effective depth measured from the top of the footing until the top of the bottom-most bar (d3) What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn) Answer in 4 decimal places (1.6125, 1.5140, 0.8461, etc.)