Design of raft foundation nptel pdf
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design of raft foundation nptel pdf

0&1$&!. This soil is much stronger than the loose soil at the surface. If we construct a raft foundation at say 10 feet below ground, and build concrete walls around the periphery, this makes an excellent basement. Therefore, an engineer designing a building with a basement will tend to choose a raft foundation over other types of foundations., NPTEL Syllabus e-Book on Concepts and Techniques in Geotechnical and Foundation Engineering - Web course COURSE OUTLINE This is in the nature of a ‘covering’ course for students who are undergoing or have undergone courses in Geotechnical Engineering and Foundation Engineering, at the undergraduate or postgraduate level. It is prepared as a.

Raft Foundation — Design Requirements and Applicability

Raft Foundation — Design Requirements and Applicability. Cover photo – Mat foundation under construction. How to Cite This Publication Klemencic, Ron, McFarlane, Ian S., Hawkins, Neil M., and Nikolaou, Sissy (2012). “Seismic design of reinforced concrete mat foundations: A guide for practicing engineers,” NEHRP Seismic Design Technical Brief No. 7, produced by the NEHRP Consultants Joint Venture,, Raft Foundation Design for a Typical 2 Storey House Example (BS8110 : PART 1 : 1997) Job Ref. Section Civil & Geotechnical Engineering Sheet no./rev. 1 Calc. by Dr.C.Sachpazis Date 23/04/2013 Chk'd by - Date App'd by Date Slab bending check Area of steel reqd in top; A.

12/1/2017 · Home › Forums › "Zebra" Adidas Yeezy Boost 350 V2 Restock Will Reportedly Be More Available This Time › Manual design of raft foundation Tagged: design, foundation, manual, of, raft 0 replies, 1 voice Last updated by Anonymous 10 months ago Viewing 1 post (of 1 total) Author Posts December 9, 2018 at 3:44 am #2003 […] Base on the project of steel production factory converter's pile-raft foundation's design, the pile-raft foundation's average settlement, differential settlement, axial force of pile, stress of raft and so on have been analyzed through this method, that is Poulos theory counting pile-soil stiffness and Reissner thick plank calculating raft.

Appendix B, Foundation Design Load Tables, provides design require-ments for anchorage of the manufactured home to the foundation and recommended footing sizes. Appendix C, Foundation Capacities Ta-bles, provides design capacities for foundation uplift and withdrawal, based on the foundation type chosen (wood, concrete masonry or cast-in-place 11 CHAPTER 11: FOOTINGS The settlement depends upon the intensity of the load, type of soil, and foundation level. Foundation design involves a soil study to establish the most appropriate type of foundation and a structural design to determine footing dimensions and required amount of …

Cover photo – Mat foundation under construction. How to Cite This Publication Klemencic, Ron, McFarlane, Ian S., Hawkins, Neil M., and Nikolaou, Sissy (2012). “Seismic design of reinforced concrete mat foundations: A guide for practicing engineers,” NEHRP Seismic Design Technical Brief No. 7, produced by the NEHRP Consultants Joint Venture, Design Of Combined Footing Nptel Pdf. Design Of Combined Footing Nptel Pdf

for the whole area about x and y axes through the centroid. 2) Soil line Method (Elastic Method) of Raft Foundation Design. A number of methods have been proposed based on primarily on two approaches of simplified and truly elastic foundations. Mat foundation: This type of foundation, which is sometimes referred to as a raft foundation, is a combined footing that may cover the entire area under a structure supporting several columns and walls (figure 5.1a). Mat foundations are sometimes preferred …

Analysis of raft foundation design based on considering influence of superstructure stiffness WANG Bin1, Q IU Jianhui1, The calculation results by example show Pile Foundation Design: A Student Guide - … Base on the project of steel production factory converter's pile-raft foundation's design, the pile-raft foundation's average settlement, differential settlement, axial force of pile, stress of raft and so on have been analyzed through this method, that is Poulos theory counting pile-soil stiffness and Reissner thick plank calculating raft.

pile foundation design in a student friendly manner. The guide is presented in two versions: text-version (compendium from) and this web-version that can be accessed via internet or intranet and can be used as a supplementary self-assisting students guide. STRUCTURE OF THE GUIDE TYPES OF FOUNDATIONS Foundation Systems Shallow Foundation Deep Foundation Pile footings Wall footings Combined footings Cantilever or strap footings Raft or Mat foundation . Lecture Note COSC 421 (M.E. Haque) 2 Shallow Foundations – are usually footings must be …

Foundation Engineering Prof. Kousik Deb Department of. Appendix B, Foundation Design Load Tables, provides design require-ments for anchorage of the manufactured home to the foundation and recommended footing sizes. Appendix C, Foundation Capacities Ta-bles, provides design capacities for foundation uplift and withdrawal, based on the foundation type chosen (wood, concrete masonry or cast-in-place, raft foundation for the structure has been analyzed and corresponding settlement, differential settlement, maximum soil pressure and point reaction on pile are observed. Fig 2 Layout of piled raft foundation. Fig 3 Displacement of piled raft foundation (in mm). IJSER Fig 4 ….

Topic 14 Foundation Design

design of raft foundation nptel pdf

Raft foundation Designing Buildings Wiki. Design of footings 313 Eurocode 7 lists a number of things th at must be considered when choosing the depth of a spread foundation, some of which are illustrated in Figure 135. [EN 1997-1 В§6.4(1)P] 10.3 Basis of design Eurocode 7 requires spread foundations to be designed using one of the following methods: [EN 1997-1 В§6.4(5)P], 3) RAFT FOUNDATION : The foundation consisting of a thick R.C.C slab covering the whole area of a mat is known as raft foundation. Method of construction of Raft Foundation: In Raft Foundation construction the whole area is dug out to the specified depth and 30 cm more wide than the area to be covered..

Pile & Pier Foundation Analysis & Design dl4a.org

design of raft foundation nptel pdf

Pile & Pier Foundation Analysis & Design dl4a.org. Mat foundation: This type of foundation, which is sometimes referred to as a raft foundation, is a combined footing that may cover the entire area under a structure supporting several columns and walls (figure 5.1a). Mat foundations are sometimes preferred … for the whole area about x and y axes through the centroid. 2) Soil line Method (Elastic Method) of Raft Foundation Design. A number of methods have been proposed based on primarily on two approaches of simplified and truly elastic foundations..

design of raft foundation nptel pdf


And next one that I will do so, this is the design of a raft foundation on clay. So, suppose we have a column arrangement is like this. So, this is the column arrangement of a building. And so, this is the 3 meter centre to centre each column as I say 3 meter centre. to centre. This soil is much stronger than the loose soil at the surface. If we construct a raft foundation at say 10 feet below ground, and build concrete walls around the periphery, this makes an excellent basement. Therefore, an engineer designing a building with a basement will tend to choose a raft foundation over other types of foundations.

• Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. • It is used where the supporting soil has low bearing capacity. • The bearing capacity increased by combining all individual footings in to one mat –since bearing capacity … structural engineers and geologists should ensure that the result of the pile foundation analysis is properly integrated into the overall foundation design. This coordination extends through plans and specifications, preconstruction meetings, and construction. Some of the critical aspects of the design process which require coordination are: a.

Analysis and Design of Pile Foundations. Handouts from the Foundation Course – Univ. of Sydney • Poulos, H.G. & Davis, E. H. (1990) Pile Foundation Analysis and This suite of spreadsheets undertake the stability analysis and structural design of a rectangular mat foundation. These spreadsheets analyse a user defined foundation with up to 32 loading points and calculate the bearing pressures transferred into the soil.

This suite of spreadsheets undertake the stability analysis and structural design of a rectangular mat foundation. These spreadsheets analyse a user defined foundation with up to 32 loading points and calculate the bearing pressures transferred into the soil. Raft foundation Used to spread the load of the structure over a large base to reduce the load per unit area being imposed on the ground Particularly useful where low bearing capacity soils are encountered & where individual column loads are heavy Typical raft foundation: Solid slab raft Beam & slab raft 17.

11 CHAPTER 11: FOOTINGS The settlement depends upon the intensity of the load, type of soil, and foundation level. Foundation design involves a soil study to establish the most appropriate type of foundation and a structural design to determine footing dimensions and required amount of … This suite of spreadsheets undertake the stability analysis and structural design of a rectangular mat foundation. These spreadsheets analyse a user defined foundation with up to 32 loading points and calculate the bearing pressures transferred into the soil.

Raft foundation. Raft foundations (sometimes referred to as raft footings or mat foundations) are formed by reinforced concrete slabs of uniform thickness (typically 150 mm to 300 mm) that cover a wide area, often the entire footprint of a building. Friction Pile – Load Bearing Resistance derived mainly from skin friction z End Bearing Pile – Load Bearing Resistance derived mainly from base. Design and Construction of Foundation. Subsurface Investigation (SI) Planning zProvide Sufficient Boreholes to get Subsoil Profile

design of raft foundation nptel pdf

FOUNDATION: Lower part of the structure which is in direct contact with the soil and transmits loads to the ground. DEEP FOUNDATION: A foundation unit that provides support for a structure transferring loads by end bearing and/or by shaft resistance at considerable depth below the ground. Chapter 8 Foundation Design 8.1 Overview This chapter covers the geotechnical design of bridge foundations, cut-and-cover tunnel foundations, foundations for walls, and hydraulic structure foundations (pipe arches, box culverts, flexible culverts, etc.).

Design of Mat/Raft Foundation FALMATASABA

design of raft foundation nptel pdf

Chapter 8 Mat Foundations الصفحات الشخصية. 12/1/2017 · Home › Forums › "Zebra" Adidas Yeezy Boost 350 V2 Restock Will Reportedly Be More Available This Time › Manual design of raft foundation Tagged: design, foundation, manual, of, raft 0 replies, 1 voice Last updated by Anonymous 10 months ago Viewing 1 post (of 1 total) Author Posts December 9, 2018 at 3:44 am #2003 […], 3) RAFT FOUNDATION : The foundation consisting of a thick R.C.C slab covering the whole area of a mat is known as raft foundation. Method of construction of Raft Foundation: In Raft Foundation construction the whole area is dug out to the specified depth and 30 cm more wide than the area to be covered..

ANALYSIS AND DESIGN OF A LARGE RAFT FOUNDATION IN

Raft Foundation Design Calculation Example. 14 Foundations for Industrial Machines and Earthquake Effects exposed to dynamic loads, which depends on the speed of the machine and natural frequency of the foundation. Thus a vibration analysis becomes necessary. Each and every machine foundation does, Friction Pile – Load Bearing Resistance derived mainly from skin friction z End Bearing Pile – Load Bearing Resistance derived mainly from base. Design and Construction of Foundation. Subsurface Investigation (SI) Planning zProvide Sufficient Boreholes to get Subsoil Profile.

The calculations presented herein cover the principal steps in the design of the mat (raft) foundation as it would be carried out in a structural engineering consultant’s office. The difference being that many of the repetitive numerical reports generated by the analysis and design program used (ADAPT-Mat) are Piled Raft Foundation. Between the geotechnical design parameters of bearing capacity and settlement, which are independent, if the design just satisfies bearing capacity, settlement will be over satisfied (i.e. settlement less than permissible), and vice versa, if the design satisfies settlement, bearing capacity will be over satisfied (i.e

Appendix B, Foundation Design Load Tables, provides design require-ments for anchorage of the manufactured home to the foundation and recommended footing sizes. Appendix C, Foundation Capacities Ta-bles, provides design capacities for foundation uplift and withdrawal, based on the foundation type chosen (wood, concrete masonry or cast-in-place Raft foundation. Raft foundations (sometimes referred to as raft footings or mat foundations) are formed by reinforced concrete slabs of uniform thickness (typically 150 mm to 300 mm) that cover a wide area, often the entire footprint of a building.

ANALYSIS AND DESIGN OF A LARGE RAFT FOUNDATION IN BAGHDAD. Open PDF. Proceedings of the Institution of Civil Engineers. E-ISSN 1753-7789. Volume 74 Issue 4, NOVEMBER 1983, pp. 837-869. PART 1 Prev Next > ANALYSIS AND DESIGN OF A LARGE RAFT FOUNDATION IN • Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. • It is used where the supporting soil has low bearing capacity. • The bearing capacity increased by combining all individual footings in to one mat –since bearing capacity …

17/9/2017В В· Here is an preview video of how to design raft footing as per IS codes. For complete design course visit www.fieldready.co.in/designpreview.php Design of footings 313 Eurocode 7 lists a number of things th at must be considered when choosing the depth of a spread foundation, some of which are illustrated in Figure 135. [EN 1997-1 В§6.4(1)P] 10.3 Basis of design Eurocode 7 requires spread foundations to be designed using one of the following methods: [EN 1997-1 В§6.4(5)P]

12/1/2017 · Home › Forums › "Zebra" Adidas Yeezy Boost 350 V2 Restock Will Reportedly Be More Available This Time › Manual design of raft foundation Tagged: design, foundation, manual, of, raft 0 replies, 1 voice Last updated by Anonymous 10 months ago Viewing 1 post (of 1 total) Author Posts December 9, 2018 at 3:44 am #2003 […] This soil is much stronger than the loose soil at the surface. If we construct a raft foundation at say 10 feet below ground, and build concrete walls around the periphery, this makes an excellent basement. Therefore, an engineer designing a building with a basement will tend to choose a raft foundation over other types of foundations.

Analysis of raft foundation design based on considering influence of superstructure stiffness WANG Bin1, Q IU Jianhui1, The calculation results by example show Pile Foundation Design: A Student Guide - … Raft foundation R A F T F O U N D A T I O N S 8 9. TYPES OF RAFT FOUNDATIONS R A F T F O U N D A T I O N S 9 10. TO DESIGN RAFT FOUNDATIONS: 1. Determine the capacity of the foundation 2. Determine the settlement of foundation 3. Determine the differential settlement 4. Determine the stress distribution beneath the foundation 5.

However, the widths of the raft foundations are larger than the isolated spread footings. As table 3 chapter 4 shows, the depth of significant stress increase in the soil below a foundation depends on the foundation width. Hence, for a raft foundation, the depth of the zone of influence is likely to be much larger than that of a spread footing. • The maximum allowable design stress during the service life. • The maximum allowable driving stresses. • Additional material stress limits, beyond the design and driving stress limits, may apply to prevent buckling of piles when a portion of the pile is in air, water, or …

10/9/2013В В· In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Raft foundation. Raft foundations (sometimes referred to as raft footings or mat foundations) are formed by reinforced concrete slabs of uniform thickness (typically 150 mm to 300 mm) that cover a wide area, often the entire footprint of a building.

This suite of spreadsheets undertake the stability analysis and structural design of a rectangular mat foundation. These spreadsheets analyse a user defined foundation with up to 32 loading points and calculate the bearing pressures transferred into the soil. Cover photo – Mat foundation under construction. How to Cite This Publication Klemencic, Ron, McFarlane, Ian S., Hawkins, Neil M., and Nikolaou, Sissy (2012). “Seismic design of reinforced concrete mat foundations: A guide for practicing engineers,” NEHRP Seismic Design Technical Brief No. 7, produced by the NEHRP Consultants Joint Venture,

Raft Foundation Design for a Typical 2 Storey House Example (BS8110 : PART 1 : 1997) Job Ref. Section Civil & Geotechnical Engineering Sheet no./rev. 1 Calc. by Dr.C.Sachpazis Date 23/04/2013 Chk'd by - Date App'd by Date Slab bending check Area of steel reqd in top; A The foundation type to Trident place is not known, however due to the age of the building it is anticipated that they are properly engineered foundations. It seems likely that they would be concrete strip footings bearing on the gravels albeit the buildings could be piled. 2.3.3 Electrical Sub Station

7/7/2010 · Lecture series on Design of Reinforced Concrete Structures by Prof. N.Dhang, Department of Civil Engineering, IIT Kharagpur.For more details on NPTEL visit h... Mat foundation: This type of foundation, which is sometimes referred to as a raft foundation, is a combined footing that may cover the entire area under a structure supporting several columns and walls (figure 5.1a). Mat foundations are sometimes preferred …

17/9/2017 · Here is an preview video of how to design raft footing as per IS codes. For complete design course visit www.fieldready.co.in/designpreview.php Cover photo – Mat foundation under construction. How to Cite This Publication Klemencic, Ron, McFarlane, Ian S., Hawkins, Neil M., and Nikolaou, Sissy (2012). “Seismic design of reinforced concrete mat foundations: A guide for practicing engineers,” NEHRP Seismic Design Technical Brief No. 7, produced by the NEHRP Consultants Joint Venture,

Appendix B, Foundation Design Load Tables, provides design require-ments for anchorage of the manufactured home to the foundation and recommended footing sizes. Appendix C, Foundation Capacities Ta-bles, provides design capacities for foundation uplift and withdrawal, based on the foundation type chosen (wood, concrete masonry or cast-in-place Analysis of raft foundation design based on considering influence of superstructure stiffness WANG Bin1, Q IU Jianhui1, The calculation results by example show Pile Foundation Design: A Student Guide - …

Mat Foundation Design Spreadsheets CivilWeb Spreadsheets

design of raft foundation nptel pdf

Foundation Engineering Prof. Kousik Deb Department of. Analysis of raft foundation design based on considering influence of superstructure stiffness WANG Bin1, Q IU Jianhui1, The calculation results by example show Pile Foundation Design: A Student Guide - …, Appendix B, Foundation Design Load Tables, provides design require-ments for anchorage of the manufactured home to the foundation and recommended footing sizes. Appendix C, Foundation Capacities Ta-bles, provides design capacities for foundation uplift and withdrawal, based on the foundation type chosen (wood, concrete masonry or cast-in-place.

ANALYSIS AND DESIGN OF A LARGE RAFT FOUNDATION IN

design of raft foundation nptel pdf

CHAPTE MAT FOUNDATIONS. Design of footings 313 Eurocode 7 lists a number of things th at must be considered when choosing the depth of a spread foundation, some of which are illustrated in Figure 135. [EN 1997-1 В§6.4(1)P] 10.3 Basis of design Eurocode 7 requires spread foundations to be designed using one of the following methods: [EN 1997-1 В§6.4(5)P] Raft foundation. Raft foundations (sometimes referred to as raft footings or mat foundations) are formed by reinforced concrete slabs of uniform thickness (typically 150 mm to 300 mm) that cover a wide area, often the entire footprint of a building..

design of raft foundation nptel pdf


structural engineers and geologists should ensure that the result of the pile foundation analysis is properly integrated into the overall foundation design. This coordination extends through plans and specifications, preconstruction meetings, and construction. Some of the critical aspects of the design process which require coordination are: a. 11 CHAPTER 11: FOOTINGS The settlement depends upon the intensity of the load, type of soil, and foundation level. Foundation design involves a soil study to establish the most appropriate type of foundation and a structural design to determine footing dimensions and required amount of …

NPTEL Syllabus e-Book on Concepts and Techniques in Geotechnical and Foundation Engineering - Web course COURSE OUTLINE This is in the nature of a ‘covering’ course for students who are undergoing or have undergone courses in Geotechnical Engineering and Foundation Engineering, at the undergraduate or postgraduate level. It is prepared as a Friction Pile – Load Bearing Resistance derived mainly from skin friction z End Bearing Pile – Load Bearing Resistance derived mainly from base. Design and Construction of Foundation. Subsurface Investigation (SI) Planning zProvide Sufficient Boreholes to get Subsoil Profile

Chapter 8 Foundation Design 8.1 Overview This chapter covers the geotechnical design of bridge foundations, cut-and-cover tunnel foundations, foundations for walls, and hydraulic structure foundations (pipe arches, box culverts, flexible culverts, etc.). 12/1/2017 · Home › Forums › "Zebra" Adidas Yeezy Boost 350 V2 Restock Will Reportedly Be More Available This Time › Manual design of raft foundation Tagged: design, foundation, manual, of, raft 0 replies, 1 voice Last updated by Anonymous 10 months ago Viewing 1 post (of 1 total) Author Posts December 9, 2018 at 3:44 am #2003 […]

6. Designing and Detailing of example chimney 6.1 Introduction In the earlier chapters about analysis of the various loads that are incident on a chimney, a number of calculations have been performed on some typical chimneys. Those results will be brought together towards the design of a sample chimney. footing, strip footing, or mat foundation [1-4]. The structural design of foundations, by itself, represents the union and the frontier of structural design and soil mechanics [1-7]. As such, shared the hypothesis and models of both disciplines, which do not always coincide, the high degree of …

• Mat or raft foundation is a large concrete slab supporting several columns in two or more rows. • It is used where the supporting soil has low bearing capacity. • The bearing capacity increased by combining all individual footings in to one mat –since bearing capacity … Advanced Foundation Engineering free online course Methods for bearing capacity estimation, total and differential settlements of footing and raft, code provisions - Design of individual footings Advanced Foundation Engineering by Dr. Kousik Deb,Department of Civil Engineering,IIT Kharagpur.For more details on NPTEL visit httpnptel.ac.in.

This suite of spreadsheets undertake the stability analysis and structural design of a rectangular mat foundation. These spreadsheets analyse a user defined foundation with up to 32 loading points and calculate the bearing pressures transferred into the soil. Mat foundation: This type of foundation, which is sometimes referred to as a raft foundation, is a combined footing that may cover the entire area under a structure supporting several columns and walls (figure 5.1a). Mat foundations are sometimes preferred …

Cover photo – Mat foundation under construction. How to Cite This Publication Klemencic, Ron, McFarlane, Ian S., Hawkins, Neil M., and Nikolaou, Sissy (2012). “Seismic design of reinforced concrete mat foundations: A guide for practicing engineers,” NEHRP Seismic Design Technical Brief No. 7, produced by the NEHRP Consultants Joint Venture, pile foundation design in a student friendly manner. The guide is presented in two versions: text-version (compendium from) and this web-version that can be accessed via internet or intranet and can be used as a supplementary self-assisting students guide. STRUCTURE OF THE GUIDE

raft foundation for the structure has been analyzed and corresponding settlement, differential settlement, maximum soil pressure and point reaction on pile are observed. Fig 2 Layout of piled raft foundation. Fig 3 Displacement of piled raft foundation (in mm). IJSER Fig 4 … However, the widths of the raft foundations are larger than the isolated spread footings. As table 3 chapter 4 shows, the depth of significant stress increase in the soil below a foundation depends on the foundation width. Hence, for a raft foundation, the depth of the zone of influence is likely to be much larger than that of a spread footing.

17/9/2017 · Here is an preview video of how to design raft footing as per IS codes. For complete design course visit www.fieldready.co.in/designpreview.php Home / Structural Engineering / Foundation Design / Raft Foundation — Design Requirements and Applicability A raft or mat foundation is a sizable concrete slab or slab-and-beam system which supports all the loads of superstructure through walls or columns in two or …

Friction Pile – Load Bearing Resistance derived mainly from skin friction z End Bearing Pile – Load Bearing Resistance derived mainly from base. Design and Construction of Foundation. Subsurface Investigation (SI) Planning zProvide Sufficient Boreholes to get Subsoil Profile Raft foundation Used to spread the load of the structure over a large base to reduce the load per unit area being imposed on the ground Particularly useful where low bearing capacity soils are encountered & where individual column loads are heavy Typical raft foundation: Solid slab raft Beam & slab raft 17.

Piled Raft Foundation. Between the geotechnical design parameters of bearing capacity and settlement, which are independent, if the design just satisfies bearing capacity, settlement will be over satisfied (i.e. settlement less than permissible), and vice versa, if the design satisfies settlement, bearing capacity will be over satisfied (i.e 11 CHAPTER 11: FOOTINGS The settlement depends upon the intensity of the load, type of soil, and foundation level. Foundation design involves a soil study to establish the most appropriate type of foundation and a structural design to determine footing dimensions and required amount of …

Raft foundation Used to spread the load of the structure over a large base to reduce the load per unit area being imposed on the ground Particularly useful where low bearing capacity soils are encountered & where individual column loads are heavy Typical raft foundation: Solid slab raft Beam & slab raft 17. Figure 10-1 illustrates several possible mat-foundation configurations. Probably the most common mat design consists of a flat concrete slab 0.75 to 2 m thick and with continuous two-way reinforcing top and bottom. This type of foundation tends to be heavily overde-signed for three major reasons: 1.

Base on the project of steel production factory converter's pile-raft foundation's design, the pile-raft foundation's average settlement, differential settlement, axial force of pile, stress of raft and so on have been analyzed through this method, that is Poulos theory counting pile-soil stiffness and Reissner thick plank calculating raft. Mat foundation: This type of foundation, which is sometimes referred to as a raft foundation, is a combined footing that may cover the entire area under a structure supporting several columns and walls (figure 5.1a). Mat foundations are sometimes preferred …

14 Foundations for Industrial Machines and Earthquake Effects exposed to dynamic loads, which depends on the speed of the machine and natural frequency of the foundation. Thus a vibration analysis becomes necessary. Each and every machine foundation does However, the widths of the raft foundations are larger than the isolated spread footings. As table 3 chapter 4 shows, the depth of significant stress increase in the soil below a foundation depends on the foundation width. Hence, for a raft foundation, the depth of the zone of influence is likely to be much larger than that of a spread footing.

design of raft foundation nptel pdf

And next one that I will do so, this is the design of a raft foundation on clay. So, suppose we have a column arrangement is like this. So, this is the column arrangement of a building. And so, this is the 3 meter centre to centre each column as I say 3 meter centre. to centre. Raft foundation R A F T F O U N D A T I O N S 8 9. TYPES OF RAFT FOUNDATIONS R A F T F O U N D A T I O N S 9 10. TO DESIGN RAFT FOUNDATIONS: 1. Determine the capacity of the foundation 2. Determine the settlement of foundation 3. Determine the differential settlement 4. Determine the stress distribution beneath the foundation 5.

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