Contents
I. INTRODUCTION :
1. Concrete, Reinforced Concrete and Prestressed Concrete
2. Design Considerations
3. Loads
4. Concrete and Reinforced Concrete
5. Advantages of RCC Construction
6. Steel as Reinforcement
7. S.I. Units
8. Formwork
II. SINGLY REINFORCED BEAMS :
1. Introduction
2. Placing of Steel in Reinfoced Concrete Sections
3. Behaviour of Beam Under Gradually Increasing Load
4. Position of Neutral Axis
5.i. Critical and Balanced Section
ii. Under Reinforced Section
iii. Over Reinforced Section
6. Effect of Varying Percentage of Steel on Moment of Resistance
7. General Notes on Design of Beams and Slabs (I.S.I.)
8. Types of Problems
9. Lintels Over-Openings
10. Balanced Section of New Concerte Mixer
11. Balanced Section for Deformed Bars
III. SLABS SPANNING IN ONE DIRECTION :
1. Introduction
2. General Notes on Design of Slabs (I.S.I.)
3. Openings in Slabs
IV. SHEAR, BOND, DEVELOPMENT LENGTH AND ANCHORAGE :
1. Shear in Homogeneous Beams
2. Shear in Reinforced concrete Rectangular Beams
3. Diagonal Tension in RCC Beams
4. Reinforcement for Diagonal Tension
5. Inclined Bars as Shear Reinforcement
6. General Rules on Design of Shear Reinforcement (I.S.I.)
7. Bond
8. Development of Stress in Reinforced and Development Length of Bars
9. Bars Bundled in Contact
10. Anchoring Reinforcing Bras
V. DOUBLY REINFORCED BEAMS :
1. Introduction
2. Design of Doubly Reinforced Sections
3. General Notes on Design of Doubly Reinforced Beams (I.S.I.)
4. Type of Problems
5. Steel Beam Theory
6. Shear in Doubly Reinforced Beams
7. Analysis of Doubly Reinforced Beams by Revised Method
VI. T AND L BEAMS :
1. Introduction
2. Position of N. A. in T-beams
3. Depth of T-beam as a Balanced Section
4. Economical Depth of T-beams
5. Shear and Bond in T-beams
6. Types of Problems
7. Doubly Reinforced T-beams
8. Moment of Resistance T-beam Taking Compression in Rib into Account
9. L-beams
10. General Notes on Design of L-beams (I.S.I.)
11. Doubly Reinforced T-beam Using Revised Theory
12. Economical Depth of T-beams Using High Yield Strength Deformed Bars
VII. AXIALLY LOADED COLUMNS :
1. Introduction
2. Short Column and Long Column
3. Type of Columns
4. Elastic Theory for Design of Columns
5. Permissible Loads as Compression Members
6. General Note on Design of Columns (I.S.I.)
VIII. TWO-WAY REINFORCED SLABS :
1. Introduction
2. Grashoff and Rankine Method for Slab Simply-Supported on Four Edges with Comers not held down and Carrying Uniformly Distributed Loads
3. Slabs Simply Supported on Four Edges with Corners Held down, i.e. Prevented from Lifting and Carrying Uniformly Distributed Loads
4. Slabs fixed on all Four Edges Cayying Uniformly Distributed Loads
5. Slabs with Continuity or Fixity on One, Two or Three Edges and Uniformly Loaded
6. I.S.I. Code Method
7. Rectangular panel with Concetrated Loads M. Pigeaud's Theory
8. General Notes on Design of Two-way Slabs (I.S.I.)
9. Flat Slab-Floors
10. Direct Design Method
11. Equivalent Frames Method
12. Shear in Flat Slab
13. Slab Reinforcement
14. Opening in Flat Slab
15. Bending Moment in Panel with Marginal Beams of Walls
16. Transfer of Bending Moments to Columns
17. Circular Slabs
18. Non-rectangular Slabs
19. Hollow Floors or Ribbed Floors
20. I.S.I. Requirements for Ribbed Hollow Block or Voided Slabs
21. Two-way Ribbed Slabs
IX. COMBINED BENDING AND DIRECT STRESSES :
1. Introduction
2. General Notes on Design of Columns Subjected to Combined Bending and Direct Stresses (I.S.I.)
3. Columns Carrying Loads with Small Eccentricity to that Tension Develops in the Section
4. Columns subjected to Beding about two Axes so that no Tension Develops in the Section
5. Sections Subjected to Large Eccentircity so that Tension is Developed
6. Design of Eccentricity Loaded Columns Based on Average Stress
7. Sections Subjected to Loads with Very Large Eccentricities
8. Section Subjected to Eccentric Tensile Loads
9. Circular Sections Subjected to Eccentric Loads
10. High Yield Strength Deformed Bars
11. Column with Biaxial Bending
X. R.C.C. FOOTINGS AND FOUNDATIONS :
1. Introduciton
2. Types of Foundations
3. General Notes on Design of Foundations (I.S.I.)
4. Footing for Two or More Columns
5. Severe Transverse Forces
6. Continuous Footings
7. Isolated Footings
8. Design of Rectangular Combined Footing
9. Design of Trapezpidal Combined Footing
10. Design of Rib Beam
11. Strap Footings
12. Mat Foundation
13. Pile Foundations
14. Pile Capacity
15. Pile Caps
16. Batter Piles
17. Analytical Method
XI. STAIR CASES :
1. Types of Stair Cases
2. Live Load on Stairs (I.S.I.)
3. General Notes (I.S.I.)
XII. RETAINING Walls :
1. General
2. Types of Retaining Walls
3. Drainage of Retaining Walls
4. State of Equilibrium in Soil
5. Theories of Earth Pressure
6. Graphical Representation of Coulomb's Theory, Rebhann's Construction
7. Earth Pressure Due to Submerged Soil
8. Earth Pressures in a Braced Trench
9. Surcharge
10. General Design Requirements
11. Choice of Type of Wall
12. Design of Cantilever Retaining Wall
13. Approximate Formula for Base Width
14. Approximate Vase Width of a Retaining Wall from Consideration of Sliding
15. Counterfort Retaining Walls
16. Retaining Wall with Back Anchoring
XIII. DOMES :
1. Introduction
2. Analysis of Spherical Domes of Uniform Thickness
3. Analysis of Conical Domes of Uniform Thickness
4. Cylindrical Vessels with Hemispherical Bottom
5. Cylindrical Vessel with Conical Bottom
XIV. R.C.C. CHIMNEYS :
1. Introduction
2. Stresses in Shafts due to Self-Weight and Wind Pressure
3. Stresses due to Difference of Temperature
4.(a). Stresses due to Difference of Temperature
5.(b. Combined Effect of Wind and Self-load Stresses with Temperature Difference Stresses
6. Stresses in Horizontal Reinforcement due to Temperature Rise
XV. BEAMS CURVED IN PLAN :
1. Introduction
2. Circular Beams Loaded Uniformly and Supported on Symmetrically Placed Columns
3. Semi Circular Beam Simply Supported on Three Supports Equally Spaced
XVI. Water TANKS :
1. Introduction
2. Design Requirements of Concrete (I.S.I.)
3. Joints in Liquid Relating Structures
4. General Design for Requirements (I.S.I.)
5. Tanks Resting on Grolunds
6. Circular Tank with Flexible Joint at the Base
7. Circular Tanks with Restraint at Base and Roof
8. Approximate Method of Design of Circular Tanks with Fixed Base
9. Rectangular Tanks
10. Underground Tanks
11. Overhead Tanks
12. Elevated Rectangular Tanks
13. Intze-type Tanks
XVII. DESIGN OF AQUEDUCTS AND BOX CULVERTS :
1. Aqueducts
2. Box Culverts
XVIII. PORTALS AND BUILDING FRAMES :
1. Portals Frames
2. Multi-storey Frames
3. Analysis of Building Frames Under Wind Loads and Seismic Forces
4. Kani's Method for Analysis of Frames
XIX. BUNKERS AND SILOR :
1. Introduction
2. Design of Bunkers
3."Silos
XX. FORMWORK :
1. Introduction
2. Requirements for Good Formwork
3. Precautions against Timber Wastage
4. Timber for Formwork
5. Loads and Pressure on Formwork
6. Timber in Joists and Studs
7. Formwork to Columns
8. Spacing of Yokes
9. Beam and Floor Formwork
10. Load on Decking
XXI. SHEET, PILE, PIER AND WHARF STRUCTURES
1. Sheet Pile Structures
2. Cantilever Sheet Piling
3. Anchored Sheet Piles
4. Anchor for Sheet Piles
5. Caisson Foundation
6. Wharves and Piers
7. Design of Wharf and Pier Structures
8. Wharf Supported on Walls and Piles
9. Vertical Forces in Piles due to Horizontal Force of Wharf
10. Bridge Piers
XXII. DETAILING OF R.C.C. STRUCTURES :
1. Introduction
2. Continuous Beams
3. Haunched Beams
4. Columns
5. Crane Gantry Bracket
6. Ties
7. Swimming Pools
8. Portals
9. Joints
10. Expansion Joints
11. Hinges
12. Rocker Bearing
13. Sliding Bearing
14. Reinforced Concrete Walls
15. Reinforced Concrete Shells and Folded Plates
XXIII. COMPOSITE SECTIONS :
1. Composite Beams
2. Width of Slab
3.(i). Propped
(ii). Unpropped
4. Shear Resistance of Connectors
5. Design of Slab
6. Design of Steel Section
7. Timber Concrete Compositive Sections
XXIV. REINFORCED CONCRETE BRIDGES :
1. General
2. Use of Reinforced Concrete Bridges
3. Selection of Type of Bridges
4. Economic Span Length
5. Types of Loading
6. Dead Load
7. Live Load
8. Impact Effect
9. Centrifugal Force
10. Wind Loads
11. Lateral Loads
12. Longitudinal Force
13. Seismic Loads
14. Frictional Resistance of Expansion Bearings
15. Secondary Stresses
16. Temperature Effect
17. Erection Forces and Effects
18. Width of Roadway and Footway
19. Deck Slab Bridges
20. Girder Bridges
21. General Design Requirements
22. Balanced Cantilever Bridges
23. Arch Bridges
24. Bow String Girder Bridges
XXX. PRESTRESSED CONCRETE :
1. Basic Principles
2. Method of Prestressing
3. Pretensioning and Post-Tensioning Comparison
4. Freyssinet Method
5. Magnel Blaton System
6. Assumption in Prestressed Concrete Design
7. Advantages of Prestressed Concrete
8. Losses in Prestress
9. Initial and Final Stress Conditions
10. Cable Zone
11. Design of Sections
12. General Design Requirements
13. Condition at First Crack
14. Ultimate Load Design
15. Shear
16. Vertical Prestressing
17. Diagonal Tension in I-sections
18. End Block
19. Magnel's Method
20. Empirical Method
21. Mild Steel Reinforcement in Prestressed Concrete Member
22. Concrete Cover and Spacing of Prestressing Steel
23. Slender Beams
24. Composite Section
25. Propped
26. Design of Propped Composite Sections
27. Unpropped Composite Sections
28. Two Stage Prestressing
29. Shrinkage Stresses
30. The Joint between Precast and In-situ Concrete
31. Prestressed Dams
32. Prestressed Piles
33. Prestressed Tensioned Members
34. Prestressed Concrete Tanks
XXVI. SUB-STRUCTURE OF BRIDGES :
1. Bed Block
2. Piers
3. Pier Dimensions
4. Design Load for Piers
5. Abutments
6. Design Loads for Abutments
XXVII. SHELL Construction :
1. Shells
2. Approximate Analysis of Circular Cylindrical Shell
XXVIII. FOLDED PLATE CONSTRUCTION :
1. Folded Plate
2. Design Consideration for Folded Plates
3. Analysis of Folded Plates
4. Analysis of Multibay Folded Plates
5. Design of Diaphragm Beam
Preface
The authors have attempted to present in this volume detailed and simple treatment of the thoery and design of R.C.C. stuctures. Complete designs of various structures have been worked out with detailed drawings. Besides giving the basic principles for design of prestressed concrete, theory alongwith detailed drawings & charts as applied to concrete structures has been given which will be of imense use for engineers for design and reference purpose.
While the work done by previous authors in the field of R.C.C. structures has greatly influenced the subject matter of this book, its speciality lies not only in entirely fresh and analytical approach to the problem of design with certain basically new conception but also in the more comprehensive treatment which makes the design of structures fuller in all respects, even to the extent of minor details.
The revised edition features, some advanced topics on Shell Construction and Folded Plate Construction with emphasis on design. Another feature of this edition is two chapters on Design Problems, and Graphs for Compression with Bending, which will prove to imense help to the readers.
The authors are grateful to the readers for sending suggestions which have enabled us to make changes and improve the text of the book and will welcome them in future improvement of the text.
Finally the authors would like to express their sense of gratitude to Shri Romesh Chander Khanna for giving personal attention and expediting the publication of the book.
List of Appendix (Appendices)
A. Table Round Bars
B. Table Area of Steel in mm in 1 Metre Width of Slab
C. Chapterwise Objective Type Questions Answers
D. Design Problems
E. Design Charts
F. Graphs for Compression with Bending. Rectangular Section-Reinforcement Distribution equally on two sides