Reinforcement Detailing of Beams from ETABS output

Aim:

To design the beams in detail from the ETABS 2018

To provide details of longitudinal and shear reinforcement for the given two continuous beams

To calculate the value of maximum shear force in any one of the spans in the continuous beams

Procedure:

• Beam are horizontal structural element used for the supporting lateral loads
• In conventional reinforced cocnrete structure beams usually recieve load from the floor slab,but may also be subjected to other loads such as wall loads finishes services installation etc..,
• The design and detailing of RC beams involves the selection of the proper beam size and the quantity of longitudinal and shear reinforcement that will satisfy ultimate and serviceability limit state requirement
• Afterwards it is very important that the beam reinforcements are placed and arranged properly on site to avoid construction error

Step 1

First we have to open the challenge 7 page and download the challenge

After downloading the challenge open it in the etabs

Step 2

Next we have to check the load combination

Step 3

Next we have to start the beam design by selecting the start design

Step 4

After the completion of the beam design we need to select the display design information

After selecting the display design info option the new tab appears in that we select the longitudinal reinforcing in the design output and click on the ok button

Next the longitudinal reinforcement details will appears

Step 5

Next we need to draw the reinforcement diagram of 3 span continous beam along Grid A and also need to provide the reinforcement details

The maximum Ast for the bottom support is 1766mm^2 and bottom middle is 702mm^2

The maximum Ast for the top support is 1889mm^2 and top middle is 453mm^2

Now we provide 3-28Φ at the top and bottom

Next we provide 1-8Φ at the top support for the continuous beam

Step 6

Next we need to draw the reinforcement diagram of 7 span continuous beam along Grid 3 and also need to provide the reinforcement details

The maximum Ast for the bottom support is 1031mm^2 and bottom middle is 1493mm^2

The maximum Ast for the top support is 1915mm^2 and top middle is 479mm^2

Now we provide 3-22Φ at the top and bottom

Next we provide 1-10Φ and 1-12Φ at the top support and we provide 2-16Φ at the bottom middle for the continuous beam

Step 7

After providing the beam reinforcement details we select the beam and right click on the beam then the new tab appears

Next we need to click on the details option in concrete beam design tb

Next the shear details will be visible

As design force is 232 KN

We got maximum shear force = 174.11KN

Step 8

Draw the shear force in combo