CONTENTS

The List of chapters from 1 to 15 are shown below
Click here for the list from Chapter 16 onwards

1. Basic design concepts in Limit State Method

2. Analysis of sections by Working Stress Method
                             
    Chapter 2 (cont..1)

3. Analysis of Beam sections by Limit state method
  • Stresses in concrete at the ultimate state
  • Design stress strain curve for concrete
  • Concrete stress block in compression
    Chapter 3 (cont..1) 
  • Depth of the rectangular portion of the stress block
  • Variation of strain in the section
  • Plane sections of the beam remain plane after bending
    Chapter 3 (cont..2) 
  • Volume of parabolic portion
  • Centroid of parabolic portion
  • Total compressive force
  • Stress-strain curve for steel
  • Design yield strength of steel
    Chapter 3 (cont..3) 
  • Parts of the stress-strain curve of steel
  • Points of the curved portion
  • Tables showing all the important points on the design curve for Fe415 and Fe500 steel.
    Chapter 3 (cont..4) 
  • Application of stress-strain curve in analysis of beam sections
  • Stress at the centroid of steel
    Chapter 3 (cont..5) 
  • Tension failure of a Beam section
    Chapter 3 (cont..6) 
  • Compression failure of a Beam section
    Chapter 3 (cont..7) 
  • Depth of Neutral axis of a Balanced section
    Chapter 3 (cont..8) 
  • Depth of Neutral Axis of Under reinforced and Over reinforced sections
    Chapter 3 (cont..9) 
  • Ultimate Moment of Resistance of rectangular beam sections
    Chapter 3 (cont..10) 
  • Limiting Moment of Resistance of rectangular beam sections
  • Maximum depth of Neutral axis
  • Limiting area of steel
4. Design of Rectangular beam sections for flexure by Limit State Method 
  • Basics of Design
  • Loads and Load effects
  • Preliminary value for total depth D
    Chapter 4 (cont..1) 
  • Preliminary value for width b
  • Exposure conditions
  • Grade of concrete
  • Concrete cover
    Chapter 4 (cont..2) 
  • Finalizing the dimensions of the beam section
  • Calculation of Effective depth required
  • Calculation of the area of steel required
    Chapter 4 (cont..3) 
  • Minimum spacing between bars
  • Arranging bars in layers
  • Arranging bars in bundles
  • Maximum spacing between bars
    Chapter 4 (cont..4) 
  • Minimum area of tension steel
  • Maximum area of tension steel
  • Beams with depth greater than 750mm
  • Side face reinforcements
  • Check for limiting steel
  • Check for MuR
    Chapter 4 (cont..5) 
  • Deflection control for beams and one-way slabs
  • Basic span to depth ratios
  • Modification factors
  • Final span to depth ratios
  • Deflection checks
  • Design of beams and various checks - Solved examples

5. Analysis of Simply supported One-way slabs
  • Bending of slabs
  • Difference between one-way and two-way slabs
  • Strips of 1 meter width
  • Area of steel from diameter and spacing of bars in slabs
  • Transverse moments in one-way slabs
  • Effects due to shrinkage and temperature
  • Secondary reinforcements
  • Solved examples
6. Design of simply supported One-way slabs
  • Concrete cover
  • Minimum spacing between bars
  • Maximum allowable spacing between bars
  • Minimum required area of reinforcement
  • Transverse reinforcements in one-way slabs
  • Deflection control
  • Guide lines for fixing up thickness of slabs
  • Solved example
  • Effective span
  • Exact analysis
  • Load arrangement
  • Simplified procedure using coefficients
  • Comparison of the two methods
  • Results of analysis
  • Effective span
  • Exact analysis
  • Load arrangement
  • Simplified procedure using coefficients
  • Comparison of the two methods
  • Results of analysis
  • Simplified procedure using coefficients
  • Comparison of the two methods
  • Results of analysis
  • Fixing preliminary depth of continuous slabs
  • Partial fixity at end supports
  • Solved example
  • Arrangement of bent up bars in continuous slab
  • Spacing of bars
  • Final sectional elevation
  • Distribution bars
  • Final checks
  • Curtailment of bars
  • Arrangement of straight bars in continuous slab
  • Spacing of bars
  • Final sectional elevation
  • Distribution bars
  • Final checks
  • Curtailment of bars
  • Design of continuous beam
  • Arrangement of bars in the continuous beam
  • Curtailment of bars in the continuous beam
  • Effective flange width
  • Isolated T-beams and L-beams
  • Neutral axis within the flange
  • Neutral axis within the web
  • Depth of the rectangular portion of the stress block is greater than depth of the flange
    Chapter 9 (cont..3)
  • Depth of the rectangular portion of the stress block is less than depth of the flange
  • Equivalent rectangular stress block

  • Solved example 9.1 - analysis problems
  • Solved example 9.1 (cont..)
  • Solved example 9.2 - Analysis of an Over reinforced T-beam section
  • Solved example 9.3 - Analysis of a L-beam section
  • Solved example 9.4 - Calculation of effective flange width and the analysis of a T-beam section
  • Limiting moment of resistance of flanged sections
  • Solved examples demonstrating the calculation of Limiting moment of resistance of flanged sections
  • Basic concepts
  • Integral action between slab and beam
  • Presentation: Different types of flanged beams
  • Preliminary dimensions
  • Preliminary effective depth
  • Design procedure
  • Calculation of steel area
  • Solved example
  • Solved example (cont..)
  • Second solved example
  • Second solved example (cont..)
  • Second solved example (cont..)

  • Limiting moment of resistance
  • Additional moment of resistance required
  • strain in compression steel
  • stress in compression steel.
  • Area of tension steel
  • Area of compression steel
  • Steps in design
  • Basic design requirements
  • check for deflection
  • Solved example demonstrating the design process
  • Strain in compression steel
  • Depth of neutral axis
  • Ultimate moment of resistance
  • Solved example
  • Solved example
  • Solved example (Over reinforced section)
  • Basics of shear in homogeneous beams
  • Stresses acting on the particles in the body of a beam
  • Major and Minor principal planes
  • Stresses in principal planes
  • Direction of principal planes
  • Stresses in principal planes at Neutral Axis
  • Stresses in an actual beam
  • Stresses in an actual beam (cont..)
  • Inclination of principal plane at NA
  • Stress trajectories
    Chapter 13 (cont..5)
  • Effects of shear in a reinforced concrete beam
  • Vertical stirrups
  • Closed stirrups
  • Open stirrups
    Chapter 13 (cont..6)
  • Inclined stirrups
  • Bent up bars
  • Factored shear stress
   Chapter 13 (cont..7)
  • Beams of Varying depth
  • Net shear force at a section
   Chapter 13 (cont..8)
  • Beams of Varying depth
  • Net shear force at a section
  • Direction of increase in depth
  • Direction of increase in Bending moment
   Chapter 13 (cont..9)
  • Shear stress offered by concrete
  • Aggregate interlocking
  • Dowel force in tensile steel
  • Shear resistance offered by vertical stirrups
  • Spacing of vertical stirrups
   Chapter 13 (cont..10)
  • Shear resistance offered by inclined stirrups
  • Spacing of inclined stirrups
   Chapter 13 (cont..11)
  • Shear resistance offered by bent-up bars
  • All bent-ups at the same section
  • Bent-up bars in series
   Chapter 13 (cont..12)
  • Calculation of spacing of stirrups
   Chapter 13 (cont..13)
  • Code provisions
  • Maximum allowable ultimate shear resistance of a section
   Chapter 13 (cont..14)
  • Critical sections
  • Simply supported beams
  • Beams part of a framed structure
   Chapter 13 (cont..15)
  • Critical sections (cont..)
  • Suspended beams
  • Inverted T-beams
  • Secondary beams
  • Hanger stirrups
  • Bent-up hanger type bars
   Chapter 13 (cont..16)
  • Solved example 13.1
   Chapter 13 (cont..17)
  • Solved example 13.1 (cont..)
   Chapter 13 (cont..18)
  • Solved example 13.2
   Chapter 13 (cont..19)
  • Solved example 13.2 (cont..)
  • Shear check for slabs
  • Shear in beams subjected to axial forces
14. Bond and Development length
  • Anchorage bond stress
  • Development length
  • Some situations where anchorage bond stress and development length have to be considered
  • Development length for bundled bars
  • Bends and hooks to improve anchorage
  • Application of bend to a practical problem
  • Bends and hooks in compression reinforcements
  • Solved example
  • Anchorage for stirrups and ties
  • More methods for the anchorage for stirrups and ties
  • 90 degree method not suitable where there is risk of spalling
  • Bearing stress at bends
  • Splicing of bars
  • Lap splice
  • Avoiding eccentricity at a lap splice
  • Additional spirals
  • Location and safe regions for splices in main bars of beams
  • Location and safe regions when curtailment of bars is done
  • Staggering of splices
  • Precautions to be taken when conditions are not satisfied
  • Extra stirrups
  • Compact stirrups
  • Code provisions related specifically to lap splices
  • Calculation of lap lengths
  • Situations which require increase in lap length
  • Code provisions related specifically to lap splices (continued)
15Curtailment of flexural tension reinforcement
  • Theoretical bar cut-off points
  • Example of a simply supported beam
  • Example with a larger number of bars
  • Curtailment of top bars at supports in a continuous beam
  • Points of inflection
  • Moment envelope
  • Approximate method to determine the theoretical cut-off points
  • Modifications that are to be made to the theoretical cut-off points
  • Internal forces in an RCC beam
  • Extension of bars beyond theoretical cut-off points
  • Conditions given by the code to provide a curtailment at a section
  • Development length requirements at simple supports
  • Development length requirements at simple supports (cont..)
  • Length L0 beyond point of zero moment
  • Development length requirements at continuous supports
  • Length L0 beyond point of inflection
  • Reducing diameter of bars to satisfy development length requirements
  • Code requirements regarding curtailment of bars
  • Bottom bars in Lateral load resisting frames (cont..)
  • Check for development length
  • Curtailment of top bars in continuous beams
  • Top bars at simple supports
  • Curtailment of top bars at continuous supports
  • Development length for bent up bars
  • Bent up bars for slabs
  • Bent up bars at end support of a frame
  • Bent up bar at a continuous support
  • Check for Ld when the bent up bar is under hogging moment
  • Method of forming a bent up bar
  • Curtailment of bars when Moment coefficients are used
  • Curtailment when Moment coefficients are used at end supports
  • Curtailment when Moment coefficients are used at continuous supports
  • Examples of curtailments
  • Curtailment of bottom bars when Moment coefficients are used
  • Curtailment of Bundled bars
  • Solved examples


75 comments:

  1. Should a continuous beam be designed as T beam or Rectangular beam.

    Thanks

    manoj Ramkissoon

    ReplyDelete
    Replies
    1. If the slab satisfies all the conditions to be considered as the flange, it can be designed as a T beam at some specified regions along the length of the beam. But at the supports, it should be designed as a rectangular beam. The application of this will depend on the structure. See details here:
      https://limitstatelessons.blogspot.in/2015/09/Effective-flange-width-of-T-beams-and-L-beams.html
      Also see the following post:
      https://limitstatelessons.blogspot.in/2015/10/integral-action-between-slab-and-beam-for-flanged-beams.html
      Check all related posts and code provisions

      Delete
  2. Sir, pl tell me why shear in beam is checked at distance d from the face of support and

    how to decide if foundation column joint is to be designed as pinned or fixed supports.

    Thanks for yr reply.

    ReplyDelete
    Replies
    1. In some cases we check shear at a distance d. The reason can be seen here:
      http://limitstatelessons.blogspot.in/2015/11/Critical-sections-for-shear-design-in-reinforced-concrete-beams.html

      Delete
    2. We have not prepared the lessons on compression members. So at present we are not able to give a detailed explanation about pinned or fixed supports. A discussion on this topic can be seen here:
      https://www.sefindia.org/forum/viewtopic.php?p=56414
      It is important to check all relevant codes and also to get the design certified by a licensed structural Engineer.

      Delete
    3. Sir, your explanation is very good on each topic...
      Can you make more chapters including columns, walls,footings, flat slabs and prestressed concrete in such a detailed manner?

      Delete
    4. We were urgently required to prepare notes for some lower classes. Those works are taking up more time than expected. So sadly, we are not able to prepare more notes on Engineering topics at present.

      Delete
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