Reinforcement Detailing of Beams from ETABS output

Challenge 7 – Detailed design of concrete buildings -1

Detail design of beams in Etabs 2018.
The ETABS file for a G+4 building is provided. Run the analysis and design the RCC Moment ResistingFrame. The following challenge deals specifically with two continuous beams in the 1st floor.

1) 3 span continuous beam along grid A
2) 7 span continuous beam along grid 3

Address the following issues thereafter.
• Provide details of longitudinal and shear reinforcement for the two continuous beams. Sketch the beam elevation details or draft it using autocad software. A sample of how beam elevation details is prepared in consultancy firms is provided below. Participants can prepare it as per their preference:

• Provide reasons for failure of the middle span along grid A. What are the possible ways this issue can be resolved?

• Calculate value of the maximum shear force in any one of the spans in both the continuous beams, as per clause 6.3.3 (b) in IS 13920 – 2016. Also, confirm these values from shear force demand calculated by ETABS.Please note that if longitudinal reinforcement provided is more than required (as per ETABS results), the shear force demand will vary from what is provided by ETABS.

Ans:-

Aim:-To Provide the longitudinal and shear reinforcement for the Given Continuous beams and to calculate the maximum shear force in

Steps to be followed are as shown below

1. For the given structure go to Analysis and run the structure.
2. Go to concrete frame design.
3. Then click on start design / check.
4. Once the checking of the entire structure is done then click on display design info.
5. The click on the beam for which we have to provide longitudinal and shear reinforcement.
6. Concrete Beam design information Tab will be appeared as shown below.
7. The click on details and then ok.
8. Design tab will appears as shown below.
9. Then click on envelope.