JNTUK R20 3-1 DDRCS Material | Full Notes PDF Download

JNTUK 3-1 3-1 DDRCS Notes and Material PDF Download

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Students learning JNTUK R20 Civil Branch, Can Download R20 3-1 unit-wise design and Drawing of Reinforced concrete Materials/Notes PDFs below.


  • Make students familiar with various types of design theories
  • Help students understand the Design of flexural member
  • Learn the concepts of shear, bond and torsion.
  • Introduce students to different kinds of compression members and Design
  • Learn about different types of foundations and the Design


Method of working stress: Elastic theory: design constants modular ratio, neutral axis’s depth and moment of Resistance – balanced over- and under-reinforced parts. Design of doubly and singly reinforced beams I.S. Code provisions.

Limit State Design Basic statistical concepts Strength of character – Characteristic loads partial load and security factors stress-strain curves of HYSD bars and M.S. bars. Assumptions – Stress block parameters – a moment of Resistance

Unit-1 PDF Material Download | Reference 2


Design for Shear and Flexure Design of single reinforced beams – effective depthMoment of Resistance- Doubly reinforced Flanged (T) beams- minimum depth – Maximum and Minimum Flexible Tension Reinforcement Design of Flanged sections (T and L)The effective width of the Flange Analysis and Design Issues.

Design for shear and Torsion: Analysis and Design of sections for shear and torsional – bond torsion, anchorage and development length, I.S. Code provisions. Simple and continuous beams support design examples with details.

Download Document PDF for UNIT-2 | Reference-2


slabs as well as serviceability Slabs and Serviceability: Classification of slabs Design of one-way slabs, one-way continuous slabs using I.S. coefficients (Conventional) Design of two-way slabs – simply slabs that are supported and slabs with diverse edges using I.S. Coefficients. The Design of Staircase Limitation state of serviceability: deflection cracking and cracking I.S. code requirements for slabs and beams.

Unit-3 PDF Material Download | Reference 2


The Design and construction of the compression member Effective length, column braced or unbraced (see I.S. Code provisions, Design of long and short queues with axial loads, biaxial and uniaxial bending (Demonstration by using S.P. 16)

Unit-4 Materials PDF Download | Reference 2


Footings Different types of floors – Design of foundations that are isolated, such as pedestal, square, circular and rectangular footings that are subject to axial loads and uni-axial bending moments.

Download the UNIT-5 Document in PDF • Reference 2

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Note: All the designs to be taught in the Limit State method Following plates must be created for the pupils.

  • Reinforcement of the detailing of T-beams, L-beams and continuous beams.
  • Reinforcement of detail detailing of columns as well as isolated footings.
  • Pieces of one-way, two-way, and nonstop slabs and waist-slab staircases.

Final Examination Pattern: The final exam paper should comprise Part A and Part B. Part A is formed of two questions on Design and Drawing, from which one is to be answered. Part B shall consist of five design and design questions, of which three must be addressed. The weightage for Part A will be 40%, while that for Part B is 60%.

Text Books:

1. Limit State Design, A. K. Jain

2. Design of reinforced concrete structures, N. Subrahmanyan

3. Reinforced concrete Structures, S. Unnikrishnan Pillai and Devdas Menon, Tata Mc.Graw Hill, New Delhi.


  1. R C C Design, B.C Punmia, A. K. Jain and A. K Jain. Lakshmi Publications
  2. Reinforced concrete Structures, S. Unnikrishnan Pillai and Devidas Menon, Tata C.Graw Hill, New Delhi.
  3. Design of reinforced concrete structures, N.Subrahmanian, and Oxford University Press.
  4. Design of limit states for reinforced concrete P C Varghese, PHI Learning Pvt. Ltd.

IS codes:

1.) IS -456-2000 Code of procedure for reinforced concrete structures (Permitted to be used in the examination hall)

2.) IS – 875

3) SP-16


  • Study different types of design philosophy
  • Design and analysis of flexural members, as well as detailing
  • Design structures are subject to bending, shear and torsion
  • Develop various compress members as well as footings
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