Design a square concrete column footing to support a 300-mm x 300-mn reinforced concrete column that in turr is supporting a 130-kN dead load and a 200-kN live load. fc' = 28 MPa and qa = 210 kN/m2. The base of the footing is to be 1.500 m below the final grade.

Design a square concrete column footing to support a 300-mm x 300-mn reinforced concrete column that in turr is supporting a 130-kN dead load and a 200-kN live load. fc' = 28 MPa and qa = 210 kN/m2. The base of the footing is to be 1.500 m below the final grade.

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

Related questions

Q: Two columns are 5.5 meters away from each other. The dimensions and loads supported by each column…

A: design calculation for the rectangular combined footing: 1.Load calculation:a. Left column: DL + LL…

Q: 7. A reinforced concrete square footing supports a 400mm x 400mm square column carrying a total dead…

A: Given, Dead load, wD=740 kNLive load, wL=1120 kNcolumn size, c=400 mmfc'=28 MPafy=415 MPaFooting…

Q: 1) A footing whose one side spans 4.2m carries a 520 kN dead load and 640kN live load from a…

A: Answer (1) Calculation of Dimension of the footing We know that Area of footing is given by A = Pqe…

Q: A 3.2 m square footing is proposed to be used to support a 373 mm x 605 mm RC column loaded with 637…

A: Given data:- Square footing size = 3.2m x 3.2m column size = 373mm x 605mm Dead Load = 637 kN Live…

Q: A 3.5 m square footing is proposed to be used to support a 328 mm x 328 mm RC column loaded with 815…

A: We have to calculate the number of bars required in one direction of the given sqaure footing…

Q: A square footing is to support a 400mm x 400mm tied column that carries a service dead load of 880…

Q: Determine the required number of 20 mm bars parallel to the critical side.

A: given- a thick square footing carrying a column of 300mmx400mm size. required- to find number of…

Q: What is the ratio of the Demand Shear Force and the Capacity in Two Way Shear? (Vu/phiVn)

A: Two way shear or punching shear is a failure mechanism in members such as slabs and footings under…

Q: What is the size of the footing required in mm?

A: The values given in the question are as follows Size of column=500 mm x 395 mm Dead load on…

Q: A square footing is to support a 400mm x 400mm tied column that carries a service dead load of 880…

Q: A 16 in square concrete column carries vertical unfactored load of 250 k. The vertical serviceload…

A: Solution: Determine the weight of the footing Wf=γLBDHere,Wf= weight of footingγ=unit weight of…

Q: Design a square footing to support a 500 mm x 500 mm column to carry an axial dead load of 650 kN…

Q: r to NSCP gn an interior isolated wall footing that carries a uniform dead load of 15 kN/m, a…

A: Solution:Assuming 16mm ϕ bar for main reinforcementFactored load calculationPu = 1.2 x DL +1.6 x…

Q: en the two layers of the bars.

A: Given Data:Square footing size = 4.31m×4.31mColumn size = 331×361mmDead load = 586kNLive load =…

Q: A column 500 mm x 500 mm square is supported by a 3.5 m x 3.5 m isolated spread footing. The column…

Q: 2) Design an isolated footing to support a 100 x 40 cms column. The column loads are 150 tons D.L.…

Q: Design a square pad footing with an overall depth of 600mm, cover to the reinforcements 50mm with…

Q: A square column 369 mm x 369 mm rests on a square footing. The column supports a dead load of 1,289…

A: Punching shear mainly occurs in foundation in flat slab. Punching shear is also called two way…

Q: Calculate the number of bars required in one direction.

Q: A 500 mm square concrete column carries factored ultimate column loads of PU = 580 kN andMU = 30…

Q: Calculate the number of bars required in one direction.

Q: A <olumn carrying an axial load of 3000 kN has a base plate 0.75 m X Lmand transmits its loads to…

Q: A square column footing is to support a 500 mm square tied column that carries a dead load 1000 KN…

Q: A 4.0 m square footing is proposed to be used to support a 766 mm x 766 mm RC column loaded with 550…

A: In sloped and stepped footing, the effective cross section in compression shall be limited by the…

Q: a square footing is designed to support a 300-mm x 400-mm concrete column that sustains an axial…

Q: Practice Problem 7.2 A 4m x 4m x 0.4m footing with a 0.4m x 0.4m column at the center is loaded with…

A: Given data d=315mm =0.315m DL = 370kN+95kN =465kN LL = 290kN+108kN = 398kN Unit Weight of RCC =…

Q: A 3.5 m square footing is proposed to be used to support a 328 mm x 328 mm RC column loaded with 815…

Q: A 3.4 m square footing is proposed to be used to support a 353 mm x 630 mm RC column loaded with 634…

Q: A combined rectangular footing is composed of exterior column 450 mm x 600 mm and interior column…

A: Answer We are given Exterior column = 450 x 600 mm Interior column = 600 x 600 mm Depth of footing h…

Q: A 600 mm x 600 mm column carries a total live load of 1200 kN and a total dead load of 1500 kN. The…

Q: A 500 mm square concrete column carries a factored ultimate vertical column load of780 kN. The…

A: as the nominal shear stress coefficient is not given we consider only moment criteria here and…

Q: A 3.3 m square footing is proposed to be used to support a 435 mm x 435 mm RC column loaded with 585…

Q: Answer the following problem and show your solution 1. A 400 mm concrete wall supports a DL= 200 kN…

A: Answer (a) Calculation of effective soil pressure Effective soil pressure = Allowable soil pressure…

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

100%

Design a square concrete column
footing to support a 300-mm x 300-mm
reinforced concrete column that in turn
is supporting a 130-kN dead load and
a 200-kN live load. fc' = 28 MPa and qa
= 210 kN/m2. The base of the footing
is to be 1.500 m below the final grade.
Concrete weight = 24 kN/m3 and soil
weight = 16 kN/m3.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

1. A square footing 1.6m x 1.6m having a thickness of 500 mm supports an interior 400 mmx400 mm square column is constructed by using f = 20.7 MPa normal-weight concrete and Grade-276 bars (fy = 276 MPa). The footing has 8-20mmo reinforcements, both ways and is terminated in 180° standard hook so that reinforcement may be assumed to be fully developed at the critical sections. The top of the footing will be covered with 500-mm of fill and 100-mm concrete thick basement floor. The basement floor loading is 2.4 kPa. Soil parameters: All = = 18 kN/m³, Ysoil = 16.5 kN/m³, = 30°, c = 0 kPa, Df = 2.0m. Use FS = 2.0 and assume general shear failure, determine the maximum service axial load (Pmax,service = PD + PL) that the footing can carry if PLIVE = 3PDEAD.
A Steel Column is to be provided with a square steel base-plate with length of side of 500mm to spread the load on to a square concrete foundation block. 1. Calculate the maximum load to be carried by the column if the permissible stress of concrete is 4.5N/mm2. 2. Calculate the minimum plan dimensions of the square concrete foundation block .Assuming the concrete foundation block weights 150KN; Bearing capacity of the soil is 200KN/M2 I
A footing supports a 200mm thick concrete wall. = 175 Wall loads: Dead Load kN/m = 89 Live Load kN/m = 20.6 Concrete, f'c MPa = 415 Steel, fy MPa 23.6 Unit weight of concrete kN/m³ = 1.2D + Factored load combination 1.6L Thickness of footing 350mm Steel Cover (bottom of footing 90mm to centroid of bars) The gross allowable soil pressure is 100 kPa and width of the wall is 200mm. Assume that the top of the footing is at the ground level.
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?
1. Design a two way slab having a simple span of 3m x 4m. The slab is to carry a uniform live load of 4800 Pa. Assume fc' = 27.6 MPa and fy = 280 MPa for main and temperature bars. The slab is not exposed to earth or weather. Use Unit weight of concrete yc= 23.5kN/m³. Use 12mm for main bars. 2m 2m 2m 3.5m 3.5m ---1 3.5m
roportion a trapezoidal combined footing for uniform pressure under dead load plus reduced live load with the following data in table. Distance c/c of column is 6 m and projection beyond column not exceed 0.5 m DL+Reduce dLL=175Kn/m2 DL+LL=230KN/m2 columnA DL=620KN LL=390KN column B DL=670KN LL=815KN
A square footing 2.5m x 2.5 m supports a square column 300mm x 300mm at its center. Concrete cover to bar centroid = 100mm. Ultimate load combination is 1.2DL + 1.6L. Column loads aee service conditions: DL= 680 KN LL = 400KN f'c = 20.7 Mpa fy = 275 MPa Calculate the nominal punching-shear stress acting at the critical section of the footing slab if the thickness of the slab is 450 mm.
A square footing 2.5m x 2.5 m supports a square column 300mm x 300mm at its center. Concrete cover to bar centroid = 100mm. Ultimate load combination is 1.2DL + 1.6L. Column loads aee service conditions:DL = 680 kN LL = 400kNf'c = 20.7 Mpa fy = 275 MPa Calculate the nominal punching-shear stress acting at the critical section of the footing slab if the thickness of the slab is 450 mm. (Correct Answer 1.99)
Design a one-way slab having a simple span of 3.5m. The slab is to carry a uniform live load of 4.8 kpa and uniform dead load of 6.68kN/m. Assume f'c=27.6 Mpa, fy=276 Mpa for main and temperature bars. The slab is not exposed to earth or weather. Use unit weight of concrete Yc=23.5 kN/m^3
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 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.
2. An existing rectangular beam has the following properties: b = 250mm d = 400mm fc = 21MPa fy = 275MPa. The beam has the ff spacing of stirrups, dia 10mm spaced @ 200mm (U-shaped stirrups). The beam will be reused and will be required to carry an elevator car with an induced Vu = 500KN. Determine the required additional concrete that shall be placed below the beam so that the existing spacing of the stirrups can be enough to resist the loads. Hint: (This is a trial-and-error problem. Try to solve by adding only 100mm and check if Vc and Vs are satisfied as per procedures in the lesson. If not, add additional 100mm until a final section is obtained)