QEEE Session on
Design of Reinforced Concrete Structures
7th, 8th and 9th March, 2017
QEEE session on Design of Reinforced Concrete Structureswas organized by IIT, Madras under D2S (Direct to Student) Program at Dronacharya Group of Institutions, Greater Noida through ICT on 7th, 8th and 9th March 2017.The session was conducted by Prof. Amit Shaw, IIT Kharagpur. It was locally coordinated by Local Faculty Coordinator Ms. Deepti Singh, Assistant Professor - Civil Engineering.
SESSION 1: 7th March 2017
Prof. Amit Shawstarted his lecture with a brief explanation of what is the importance of designing in civil engineering and also discussed the grounds on which a civil engineer has to work and design under different conditions of load systems and different soil and landscape conditions. The key points of the session were:
1. Steps in Structural Engineering
2. Effects on concrete under different load systems
3. Objective of design of R.C buildings
4. Different design philosophies
The emphasis was laid on the limit state design philosophy of the structure. Prof. Shaw discussed various factors important for limit state design method such as properties of concrete, characteristic load, characteristic strength, limit states - both of collapse as well as serviceability, partial safety factors and also design strength of concrete and steel. All were explained with the help of the different graphs taken from the IS code IS 456:2000. Other topics such as different components of R.C. buildings and beam idealization were also described with suitable examples. The session ended by the explanation of sign conventions taken for force and moments that acts on the beam useful for designing.
SESSION 2: 8th March 2017
Prof. Amit Shawstarted his lecture with design of flexure or bending, followed by topics:
1. Effect on beam under flexure
2. Assumptions of limit state under flexure
3. Limit state brittle and ductile failure
4. Types of sections: balanced ,over reinforced and under-reinforced section
5. Conditions of balanced sections with examples and formulas related to section
6. Over - Reinforced with examples and formulas of moment of resistance etc.
7. Under - Reinforced sections with examples and formulas related to it used for relevant designing
In this session he gave a brief description of all design elements related to design and made students understand how to analysis design factors for different sections. He also laid emphasis on how different factors behave differently for different sections in designing.
SESSION 3: 9th March 2017
Prof. Shaw started the third session with description of design for shear i. e. design under shear conditions. The emphasis was laid on the behavior of the beam under shear, the types of cracking that are basically witnessed under such conditions of shear. Diagonal cracking and dowel action was very effectively explained to the students with different examples. Topics such as design strength under shear condition, factors and conditions of limit state in shear, typical reinforcement of shear, concept of stirrups and maximum shear strength conditions were also explained.
An one hour of tutorial included numerical designing questions that were step by step solved live, keeping all the factors of bending, shear etc. in mind. All types of questions that can be useful for designing different sections were done and explained.
Keeping in mind the benefits of students’ one assignment and one proctored quiz was given to the students, which has to be submitted by the students through their QEEE account on or before 27th March 2017.
The session covered most important elements of designing. It included thedesign procedures for limit state design procedure for deigning of beam under different conditions for different sections - balanced, over-reinforced or under - reinforced sections. Along with the design procedures, the functional requirements of the elements are mentioned in respective sectionsof this session. This helped in understanding of conceptual as well as practicalimplication of the design elements of beam.