Foundation Design: Principles and Practices (3rd Edition)
3rd Edition
ISBN: 9780133411898
Author: Donald P. Coduto, William A. Kitch, Man-chu Ronald Yeung
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 7, Problem 7.19QPP
Develop a spread sheet to compute allowable total vertical column loads using the ASD method and factored ultimate vertical column loads using LRFD. The spreadsheet should consider only vertical loads on a square or continuous footing bearing on single uniform soil. It should allow the input of footing width, depth, water table depth, soil strength parameters, a factor of safety for ASD, and a geotechnical resistance factor for LRFD. It should compute the bearing capacity based on both Terzaghi’s and Vesic "’s methods.
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule16:55
Students have asked these similar questions
A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below grade. The column bearing on this footing will impose a load of 180kips. Assuming the subsurface conditions shown below with groundwater 5ft below grade, Use Schmertman’s method to calculate the elastic settlement of the system 6 years after construction is completed, provide a clear sketch and show units and state assumptions.
1. A 4ft by 4ft spread footing is proposed where the bottom of footing is set 2ft below
grade. The column bearing on this footing will impose a load of 180kips. Assuming the
subsurface conditions shown below with groundwater 5ft below grade, Use
Schmertman's method to calculate the elastic settlement of the system 6 years after
construction is completed, provide a clear sketch and show units and state assumptions.
Oft
Sand
Ymoist = 120 pcf
Phi = 30deg
Es = 52 ksf
4ft
Loose Sand
5ft
Ymoist = 125 pcf
Yat = 145 pcf
Phi = 22deg
Es (above GW) = 30 ksf
Es (below GW) = 20 ksf
8ft
Dense Sand
Ysat = 155 pcf
Phi = 35deg
Es = 60 ksf
20ft
2. The foundation above is limited to a 1.5" settlement after 10 years, speak to whether the
design is adequate and if not how can you adjust the project to meet this criteria.
A spread footing supported on a sandy soil has been designed using ASD to support a certaincolumn load with a factor of safety of 2.5 against a bearing capacity failure. However, there issome uncertainty in both the column load, P, and the friction angle, f. Which would have thegreatest impact on the actual factor of safety: an actual P that is twice the design value, or actualf that is half the design value? Use bearing capacity computations with reasonable assumedvalues to demonstrate the reason for your response.
Chapter 7 Solutions
Foundation Design: Principles and Practices (3rd Edition)
Ch. 7 - List the three types of bearing capacity failures...Ch. 7 - A 1.2 m square, 0.4 m deep spread footing is...Ch. 7 - A 5 ft wide, 8 ft long, 2 ft deep spread footing...Ch. 7 - A column carrying a vertical downward unfactored...Ch. 7 - A column carrying a vertical downward ultimate...Ch. 7 - A 120 ft diameter cylindrical tank with an empty...Ch. 7 - A 1.5 m wide, 2.5 m long, 0.5 m deep spread...Ch. 7 - A 5 ft wide, 8 ft long, 2 ft deep spread footing...Ch. 7 - A bearing wall carries a total unfactored load 220...Ch. 7 - After the footing in Problem 7.9 was built, the...
Ch. 7 - A bearing wall carries a factored ultimate...Ch. 7 - A 5 ft wide, 8 ft long, 3 ft deep footing supports...Ch. 7 - Prob. 7.13QPPCh. 7 - A spread footing supported on a sandy soil has...Ch. 7 - A certain column carries a vertical downward load...Ch. 7 - A building column carries a factored ultimate...Ch. 7 - A 3 ft square footing is founded at a depth of 2.5...Ch. 7 - A building column carries factored ultimate loads...Ch. 7 - Develop a spread sheet to compute allowable total...Ch. 7 - A certain column carries a vertical downward load...Ch. 7 - Repeat Problem 7.20 using LRFD assuming the...Ch. 7 - Conduct a bearing capacity analysis on the Fargo...Ch. 7 - Three columns, A, B, and C, are collinear, 500 mm...Ch. 7 - Two columns, A and B, are to be built 6 ft 0 in...Ch. 7 - In May 1970, a 70 ft tall, 20 ft diameter concrete...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Phone Book Program Design a program that you can use to keep all of your friends names and phone numbers in a f...
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
This optional Google account security feature sends you a message with a code that you must enter, in addition ...
SURVEY OF OPERATING SYSTEMS
This is a prewritten function that is built into a programming language. a. standard function b. library functi...
Starting Out with Python (4th Edition)
(Multiples of 2 with an Infinite Loop) Write an application that keeps displaying in the command window the mul...
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
The solid steel shaft AC has a diameter of 25 mm and is supported by smooth bearings at D and E. It is coupled ...
Mechanics of Materials (10th Edition)
Describe the advantages and disadvantages of DBMS-provided security.
Database Concepts (8th Edition)
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 square footing is to be constructed on a uniform thick deposit of clay with a unconfined compressive strength of 3kips/ft2. the footing will be located 5 ft below the ground surface and is designed to carry a total load of 300 kips. the unit weight of the supporting soil is 128lb/ft3. no groundwater was encountered during soil exploration. considering general shear, determine the square footing dimension, using a factor of safety of 3arrow_forwardRedo Problem 16.13 with the following data: gross allowable load = 184,000 lb, = 121 lb/ft3, c = 0, =26, Df = 6.5 ft., and required factor of safety = 2.5. 16.13 A square footing (B B) must carry a gross allowable load of 1160 kN. The base of the footing is to be located at a depth of 2 m below the ground surface. If the required factor of safety is 4.5, determine the size of the footing. Use Terzaghis bearing capacity factors and assume general shear failure of soil. Given: = 17 kN/m3, c = 48 kN/m2, =31.arrow_forwardThe thickness and reinforcement of a spread footing are governed by structuralconcerns. Structural design is governed by the LRFD method, which means theseanalyses are based on the factored loads.arrow_forward
- Prepare a spreadsheet to compute settlement of square footings using the e@log@p method. Thespreadsheet should allow input of: footing width, footing depth, groundwater depth, columnservice load, footing rigidity factor and Cr/(1 + e0), Cr/(1 + e0), sm′, and g as function ofdepth. Check your spreadsheet using a hand solutionarrow_forwardA strip footing carries a load 14506 lbs per foot of length. The footing has a width of 2.3 ft. Determine the increase in vertical stress directly below the center of the footing at a depth of 0.8 ft. Provide your answer in psf, to 2 decimal place. Do not include units in your response.arrow_forwardDevelop a spread sheet to compute allowable total vertical column loads using the ASD methodand factored ultimate vertical column loads using LRFD. The spreadsheet should consider onlyvertical loads on a square or continuous footing bearing on single uniform soil. It should allowthe input of footing width, depth, water table depth, soil strength parameters, a factor of safetyfor ASD, and a geotechnical resistance factor for LRFD. It should compute the bearing capacitybased on both Terzaghi’s and Vesic ́’s methods.arrow_forward
- Question 3. A strip footing is to be used in a clay soil in which the imposed load is 1 MN/m length. The clay layer is 7.0 m thick and overlies a stiff, fractured siltstone. The water table lies at a depth of 2.0 m. a. Determine the footing width based on the long-term allowable bearing capacity (calculated according to the method in the Canadian Foundation Engineering Manual; neglect depth factors) using a factor of safety of 3.0 for a burial depth of 2.0 m. The material properties of the clay are: c' = 15 E = 42 MPa o' = 27° y= 18.5 kN/m³ Ce = 0.40 e, = 0.90 C, = 9.3 x 104m²/day Cu = 25 b. Why would bearing capacity failure likely not govern the design of this structure?arrow_forwardDiscuss DESIGN OF SPREAD FOOTINGS AGAINST BEARING CAPACITY FAILUREarrow_forwardDefine Load-Settlement Response of Footing on Sand ?arrow_forward
- Section 304 of the NSCP provides tabulated values of allowable foundation pressures to different types of foundation materials (NSCP Table 304-1). The tabulated values are assumed for footings having a minimum width of 300mm and a minimum depth of 300mm into natural grade. These values may be increased by 20% for each additional 300 mm of width and/or depth to a maximum of 3 times designated value. If the soil is identified to be sandy gravel and have a tabulated value of 100kPa, calculate the maximum allowable soil pressure which may be used for a 1.40m x 1.80m footing with the bottom of the footing located 1.20m below the natural grade.arrow_forwardA rectangular combined footing 8 ft * 20 ft is founded at a depth of 6 ft on a normally con-solidated sand deposit. The sand deposit is approximately 28 ft thick and overlies sandstone. CPT tests indicate the sand is relatively uniform below the proposed footing depth and theaverage tip resistance is 50 tsf. The total service load carried by the combined footing is480 k. Estimate the settlement of this footing.arrow_forwardFigure Q1 presents a concrete (γc=23kN/m3) circular footing founded on a saturated silty clay profile. Your input depends on the ultimate (j) and the penultimate (i) digit of your ID number as described by the formulae in Table Q1. Calculate the Safety Factor against bearing capacity failure under short-term loading conditions (use the Meyerhof methodology) Note : My ID Number is 9477287arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Foundation Engineering (MindTap Cou...Civil EngineeringISBN:9781337705028Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...Civil EngineeringISBN:9781305970939Author:Braja M. Das, Khaled SobhanPublisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...
Civil Engineering
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...
Civil Engineering
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Cengage Learning