A column 14" square with fc' = 4ksi reinforced with 8 #9 bars of fy= 60 ksi, supports a service load of 91.87kips ( factored load = 113.17 kips ). The allowable soil pressure is 2.904k/ft². Design a square footing with base 6' below surface. Take unit weight of soil as 100 psf

A column 14" square with fc' = 4ksi reinforced with 8 #9 bars of fy= 60 ksi, supports a service load of 91.87kips ( factored load = 113.17 kips ). The allowable soil pressure is 2.904k/ft². Design a square footing with base 6' below surface. Take unit weight of soil as 100 psf

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Working example 10.2: Design a strip footing A 300 mm thick concrete wall carries a service dead…

A: Given Data :Thickness = 300 mmDead load = 140 kN/mLive Load = 225 KN/mSoil pressure = 240 KPafc= 20…

Q: 500 mm x 500 mm column carries a Dead Load of 1430 kN and a Live Load

A: Dead load = 1430 KN Live load = 700 KN Dimension of footing = 3×3 m In the calculation of net…

Q: SITUATION. A column 400 mm x 400 mm square is supported by a 3 mx 3 m isolated spread footing whose…

A: Answer (2) Calculation of wide beam shear stress at ultimate loads We know that wide beam shear…

Q: fc' = 21 mpa fy= 280 mpa Load: 2900 Live load = 2900 Pa Weight of RC = 2400 kg/m³ Weight of CHB =…

A: f'c=21 mPafy=280 mPaWeight of RC=2400 kg/m3Column section=0.4m x 0.4mP=540000 NPu=695000 Nqa=100 kPa…

Q: SITUATION. A square footing is to support a 400 mm x 400 mm column carrying 1400 kN live load and…

A: Given: Dia of bar = 28 mm Strength of concrete in column and footing = 28 mpa and 21 mpa…

Q: A proposed office building will include a 10 ft x10 ft square, 3 ft deep (the footing height is also…

A: Given data: Building area=10 ft*10 ft Depth of footing=3 ft Unit weight, γdry=115 pcf Frictional…

Q: A 6ft x 6ft foundation is subjected to an axial load Q = 225k and a moment M = 100k ft. The depth of…

A: Given data: Dimension of the foundation = 6ft x 6ft Axial load (Q) = 225k Moment (M) = 100 k-ft Unit…

Q: A square footing has a dimension of 1.42 m x 1.42 m and has its bottom 1.39 m below the ground…

A: Given Dimension: 1.42 X 1.42 df = 1.39m

Q: N. N, N. N. Ni, 5.70 1.00 0.00 26 15.53 6.05 2.59 1.07 0.005 16.30 2.88 5.90 6.10 27 28 6.54 1.14…

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 square footing is to be constructed on a uniform thick deposit of clay with a unconfined…

Q: 1- Given Data Ꭰ L 40 in × 30 in fy Column = 350 Kips = 250 Kips = 60 ksi fé fy qa Footing = 3.25 ksi…

A: Data provided -column Footing 1Ksf…

Q: An interior column for a manufacturing building will be supported on the site’s natural clay soil,…

A: The ultimate bearing capacity for square footing is given by,

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: 2. A square footing has a dimension of 1.8 m x 1.8 m x 0.8 m. The column section is 320 mm square.…

A: The development length can be calculated using the following formula:Here, and are the…

Q: id no. 20193022142

A: Given: Df = 1.2+0.01(42) = 1.62m Water table location = 0.5+0.01(42) = 0.92 m (from the top of the…

Q: The average corrected in the effective zone for a square footing(1m x 1m) located at a depth of 2m.…

A: Let us analyse the question in step 2.

Q: Design an isolated rectangular footing: P(dead load) = 225 kN P(live load) = 130 kN Qa = 180 kPa Df…

A: Given Data:D.L =…

Q: 9. What does the soil stress distribution beneath the footing depend on? Depends only on the…

A: Stress distribution beneath the footing depends on the footing is flexible or rigid footing. Thus it…

Q: Quickly please

A: (a):0.50.5multiplied by: y120multiplied by: H^244.5^2multiplied by: (Ka - Kp) Ka = tan^2 (45 -…

Q: A 3.5 m square footing is proposed to be used to support a 521 mm x 376 mm RC column loaded with 675…

A: Given data:- Square footing size = 3.5m x 3.5m column size = 521 mm x 376 mm Dead Load = 675 kN Live…

Q: Q#3:…

A: The allowable safe bearing capacity is given by: Where,

Q: Design a square concrete column footing to support a 300-mm × 300-mm

A: Givendata: Dimension of column = 300 mm x 300 mm Dead load = 130 kN Live load = 200 kN Compressive…

Q: Design an isolated square footing: P(dead load) = 550 kN P(live load) = 375 kN M(dead load)= 125…

A: As per Bartleby's guidelines we are supposed to answer only first three questions. Kindly repost…

Q: A certain column carries a vertical downward load of 448.0 k. It is to be supported on a 3.0-ft deep…

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 proposed office building will include a 10 ft x10 ft square, 3 ft deep (the footing height is also…

A: Given, Cross sectional area of footing = 10 ft x 10 ft Depth of footing = 3 ft Angle of internal…

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

Q: 2. Design the dimension of a square footing to carry a column load 1800 kN. The base of the footing…

A: To design the footing, we will proceed by determining the ultimate bearing capacity of the footing.…

Q: A central column 300 mm x 300 mm dimension in a three storey building is to support a service load…

A: column dimension 300 mm x 300 mm. service load = 548 kN. The allowable bearing pressure = 150kN/m2…

Q: A column 12" square with fc'=5 ksi reinforced with 8#10 bars of fy=60ksi,support a service load of…

A: Footing:Footing could be a sort of foundation that's constructed with concrete or brickwork masonry…

Q: A plate load test was conducted on sandy soil. The plate used is 81 cm square. The ultimate load per…

A: Given data in question Size of plate Load per unit area in plate load test Size of footing FOS To…

Q: Determine the maximum allowable service axial load (dead+live) that the isolated spread footing…

A: Given Data:Footing dimension= 1.50m sq.Footing thickness= 0.75mColumn size and orientation : 250mm…

Q: A building will have a factored column load of 300 kN. The column is to be supported on a square…

Q: A plate load test has been done on a square footing of 3 m size with square plate of 0.3 m size.…

A: Given that, Bf= 3 mBp= 0.3 mSp= 3mmSf= ?

Q: A column 12" square with fc'=5 ksi reinforced with 8#10 bars of fy=60ksi,support a service load of…

A: Footing: Footing could be a sort of foundation that's constructed with concrete or brickwork masonry…

Q: A proposed building column will carry a maximum downward unfactored load combination is 250 kips and…

A: The maximum factored load combination of (ULS) = 250 kipsservice load of column = 185 kipsfactor of…

Q: PROBLEM 1: Design a square footing that supports a 400 mm x 550 mm column. The column carries a…

A: Given values: Dead load = 980 KN Live load = 1110 KN Column size = 400 mm * 550 mm f'c = 30 MPa fy =…

Q: A square footing 5 ft by 5 ft supported on a sandy stratum is designed to carry a column loading of…

Q: A column 12" square with fc'=5 ksi reinforced with 8#10 bars of fy=60ksi,support a service load of…

A: Footing:Footing could be a sort of foundation that's constructed with concrete or brickwork masonry…

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

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3 required depth of the footing

VIEW

Step by step

Solved in 3 steps

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

A series of columns carrying unfactored vertical loads of 20 to 90 k and service loads from 20 to 75 k are to be supported on 3 ft deep square footings. The soil below is a clay with the follow-ing engineering properties: g = 105 lb/ft 3above the groundwater table and 110 lb/ft3below, su = 3,000 lb/ft2, Cr/(1 + e0) = 0.03 in the upper 10 ft and 0.05 below. Both soil strata areheavily overconsolidated. The groundwater table is 5 ft below the ground surface. The factorof safety against a bearing capacity failure must be at least 3. Determine the allowable bearingpressure, qA, using ASD.
I need correct solution Solution in chegg was incorrect So please provide correct solution
Please explain and number steps
Figure (a) shows the cross section of square footing of 3 m x 3 m. The soil properties are shown in the figure. i) ii) Determine the load Q that the footing can carry. Use the factor of safety (FOS) of 2.5. During rainy season, groundwater level increased to the soil surface. Based on this condition, calculate the new FOS and justify whether the existing footing is able to carry the same amount of load as calculated in (a) Not drawn to scale 1.6 m 0.4 m Water level 3m Q Soil properties Yd=18.3K³ Ysat = 21 kN/m³ = 30°
A building will have a factored column load of 300 kN. The column is to be supported on a square spread footing underlain by a soil with the follow properties: c' = 5 kPa, o' 35°, y = 18.5 kN/m³. The groundwater table is at a depth of 15 m and the footing will be located 0.5 m below the ground surface. Determine the required footing size if Þ = 0.5. Use Terzaghi's bearing capacity equation for a square footing. Solve for 'B', making sure to use the reduction factor Þ; trial and error is the easiest way to solve for 'B'. Recommend a "reasonable" dimension for construction/design purposes.
The underlying soil is a well-graded sand with c′ = 0, f′ = 36°, g = 126 lb/ft3, with a verydeep groundwater table. Using LRFD, design a rectangular footing to meet the ultimate limitstates using a resistance factor of 0.45. Assuming the average CPT tip resistance of the sand is300 kg/cm2, check to see if your design meets serviceability limits. Adjust the design as needed.
Foundation example
Design an isolated rectangular footing: P(dead load) = 225 kN P(live load) = 130 kN Qa = 180 kPa Df = 1.5 m Unit wt. of concrete = 23.5 kN/m^3 Unit wt. of soil =17.2 kN/m^3 Bar diameter = 20 mm f`c = 20.7 MPa fy = 248 MPa Width of footing, B is limited to 2m only Column = 40 cm x 40 cm Assume height of footing = 350 mm (check adequacy, if failed - increase the depth) Use min. cover = 75 mm Determine the following: (a) Effective Soil Bearing Pressure, Qe (b) Footing Dimension, L (c) Ultimate Soil Bearing Pressure, Qu (d) Check for Shear Criteria (Beam Shear) (e) Check for Shear Criteria (Punching Shear) (f) Required Steel Area (Long and Short Direction)
A structural engineer finished a design of a library. They determine that each column will carry 1000 lbs. the soil beneath the footing has the properties: gamma= 130 pcf, c= 75psf, phi= 40 degrees. The groundwater table is of great depth so it’s no concern. Sketch figures. What is the minimum size of the footing for a factor of safety of 3? Case 1: assume square footing Case 2: assume round footing
A 500 mm square concrete column carries a factored ultimate vertical column load of780 kN. The vertical service load is 650 kN. It is to be supported on a square footing withf′ c = 17 MPa and fy = 420 MPa. The soil has an allowable bearing pressure for bearing cap-acity of 650 kPa (based on LRFD methods) and an allowable bearing stress for settlement of 160 kPa. The groundwater table is at a great depth. Determine the required footing width, thick-ness, size of the flexural reinforcement, and show your design in a sketch.
Q3: Shallow footing shown in Figure below calculate the: 7-l90 kN/m2 Es KNIM2 1 m IMX2m lo00 Ms =0.3 600 M I, 12 2 0.611 0.0o38 10 2 0-64l 0.03 1o00 IF=0-685 Rock 8.