A circular footing with adiameter of 3m, if theallowable bearing capacityof the site is 220 kN/m2;therefore, the allowable loadthe foundation can carry is:a. 1500 kNb. 88 kNOC. 1080 kNd. 1555 kN A rectangular footing with alength of 2.5m and width of1.5m, if the the friction angleof the supporting soil is 25;the value of the shape factor(Fqs) related to generalbearing capacity equation is:a. 1.181b. 1.279O C. 1.322O d. 1.233

Answered: Image /qna-images/answer/0c36055d-c5c7-4b74-843b-f17c4a8f853a.jpg

Answered: A circular footing with a diameter of…

A circular footing with a diameter of 3m, if the allowable bearing capacity of the site is 220 kN/m2; therefore, the allowable load the foundation can carry is:

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: 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 rectangular foundation has dimensions B = 8', L = 10', D = 3'. It is underlain by a medium dense…

A: Given, B = 8 ft L = 10 ft D = 3 ft Es = 300 ksf γ = 120 pcf ∆p = 2 tsf or 4000 psf

Q: Kindly answer this as soon as possible. Urgent Find ultimate bearing capacity qu for a footing of…

A: Given, Cu= 100kpa Unit weigh of soil = 20KN/m³ Width of footing (B) =1m Depth of foundation (D) =…

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 footing 2.25 x 2.25m is located at a depth of 1.5 m in a sand, the shear streng parameters to be…

A: Given : Footing size = 2.25 X 2.25 m Depth = 1.5 m To Find : Ultimate bearing capacity : A) if the…

Q: Question 1 Design an isolated footing to support an interior column 35 cm x 35 cm in cross section…

Q: A footing 2.25 x 2.25 m is located at a depth of 1.5 m in a sand, the shear strength parameters to…

Q: A square footing of size 3 m x 3 m is located at 1.5 m below the ground level. The footing has net…

Q: A 30 x 24 ft mat foundation is to be placed at 9 ft depth in a saturated clay where Cu= 1200 Ib/ft²…

A: Given: The size of the foundation is 30 x 24 ft. The depth is 9 ft. The value of cohesion Cu is 1200…

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: 2. A medium dense sand is proposed to support a square foundation having a width and length of 5…

A: Consider the free body diagram as;

Q: For the following plan (Factor of Safety:3) a. Assume as rigid and calculate the dimension b b. Find…

A: Given: The length of the foundation is 9 m. The load on col. 1 is 500 kN. The load on col. 2 is 400…

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: When revising the characteristic value of the subgrade bearing capacity, which of the following…

A: Brief concept introduction- Subgrade bearing capacity- Subgrade materials are often classified…

Q: Asquare footing foundation is required to carry a column load of 100 kN (including the weight of the…

A: Load on the column = 100 kN Shear strength of the soil (Cohesion of the soil) = 45 kPa Angle of…

Q: 2 metre wide continuous Foundation carries a will load of 350 kilo Newton per metre square in a…

A: Solution Given Data ϕ=230 q=350 KN/m2 B=2 m

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

Q: A proposed 1.5 m wide square footing will be built on sandy soil with c' = 0, Φ' = 35°, γt = 18.5…

A: Given, width of the square footing = 1.5m Cohesion (c) =0 Angle of internal friction (Φ') = 35°…

Q: (b) The bearing capacity of shallow foundation depends on several factors, list any five of them

A: Foundation is the substructure elements that are in direct contact with the ground and transmit,…

Q: (5) There is a strip footing with a width of 2 m and a buried depth of 1.5 m. The foundation soil is…

A: The Ultimate Bearing capacity is calculated by Terzaghi theory.

Q: to be constructed on able is at depth 15 pacity and the colum

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

Q: A strip footing is to be designed to support a dead load of 500 kN/m and an imposed load of 300 kN/m…

Q: A continuous footing with a B = 7.5ft is constructed with a Df of 3ft in a soil with the following…

A: Consider the given data Consider the Tarzaghi Bearing capacity table

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: Calculate the ultimate bearing capacity of a 2 m wide strip foundation embedded 2 m below the ground…

A: Figure is as shown

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

A: Solution:

Q: A foundation is 3 mx 2 m in plan. Given: Dr= 1.5 m, o'= 25°, c'= 70 kN/m². With General Bearing…

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

A: phi = 32o c = 1000 psf Depth of footing = 5 ft Q = 225 k M= 100 k ft Length & Breadth of…

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

A circular footing with a
diameter of 3m, if the
allowable bearing capacity
of the site is 220 kN/m2;
therefore, the allowable load
the foundation can carry is:
a. 1500 kN
b. 88 kN
OC. 1080 kN
d. 1555 kN

A rectangular footing with a
length of 2.5m and width of
1.5m, if the the friction angle
of the supporting soil is 25;
the value of the shape factor
(Fqs) related to general
bearing capacity equation is:
a. 1.181
b. 1.279
O C. 1.322
O d. 1.233

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 by step

Solved in 2 steps with 2 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

A 6ft x 6ft foundation is subjected to an axial load Q = 225k and a moment M = 100k ft. The depth of footing is 5ft. The soil unit wt is 125pcf, phi = 32deg and c=1000psf Find: 9min 9max e B' L' qult using the general BC equation
A 6ft x 6ft foundation is subjected to an axial load Q = 225k and a moment M = 100k ft. The depth of footing is 5ft. The soil unit wt is 125pcf, phi = 32deg and c=1000psf Find: 9min qmax e L' qult using the general BC equation
A 6ft x 6ft foundation is subjected to an axial load Q = 225k and a moment M = 100k ft. The depth of footing is 5ft. The soil unit wt is 125pcf, phi = 32deg and c=1000psf Find: qmin qmax e B' L' qult using the general BC equation
1) A footing whose one side spans 4.2m carries a 520 kN dead load and 640kN live load from a reinforced concrete column. The column measures 500mm parallel to the long side of the foundation, and 800mm on the other side. Assume effective soil bearing capacity of 80kPa, concrete compressive strength of 21 MPa, and steel yield strength of 280 MPa. Determine the following: • Dimensions of the footing (use 100mm increments) • The thickness of the footing (use 10mm increments) • Number of 20mm reinforcements along each dimension
The applied load on a shallow square foundation makes an angle of 15 with the vertical. Given: B = 1.83 m, Df = 0.91 m, = 18.08 kN/m3, =25, and c = 23.96 kN/m2. Use FS = 4 and determine the gross allowable (vertical component) load. Use Eq. (16.9).
For the mat in Problem 16.15, what will be the depth, Df, of the mat for FS = 3 against bearing capacity failure? 16.15 Consider a mat foundation with dimensions of 18 m 12 m. The combined dead and live load on the mat is 44.5 MN. The mat is to be placed on a clay with cu = 40.7 kN/m2 and = 17.6 kN/m3. Find the depth, Df, of the mat for a fully compensated foundation.
A 3.3 m square footing is proposed to be used to support a 435 mm x 435 mm RC column loaded with 585 kN dead load and 643 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 290 kPa. The thickness of the footing is 459 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. Use an effective depth measured from the top of the footing until the center of the bottom-most bar (d1) Calculate the number of bars required in one direction. Answer in multiples of 1
None
A 4.0 m square footing is proposed to be used to support a 766 mm x 766 mm RC column loaded with 550 kN dead load and 590 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m³ and the allowable soil bearing pressure is 307 kPa. The thickness of the footing is 563 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. Use an effective depth measured from the top of the footing until the center of the bottom-most bar (d1) Calculate the number of bars required in one direction. You Answered Correct Answer 13
A 3.5 m square footing is proposed to be used to support a 328 mm x 328 mm RC column loaded with 815 kN dead load and 770 kN live load. The bottom of the footing is 2 m below the ground. Assume soil weighs 19 kN/m3 and the allowable soil bearing pressure is 314 kPa. The thickness of the footing is 553 mm. f'c = 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. Use an effective depth measured from the top of the footing until the center of the bottom-most bar (d1) Calculate the number of bars required in one direction.
pls answer
A 5 * 7 ft footing is founded at a depth of 2 ft and supports a vertical load of 80 k and a moment load of 30 ft-k in the B direction and 50 ft-k in the L direction. Determine the dimen-sions of the equivalent uniformly loaded footing and compute the equivalent bearing pressure.