Challenge

Reinforcement Detailing of Beams from ETABS output

ANS:

AIM:- To design the beams in detail from the Etabs 2019.

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 span in the continuous beams.

INTRODUCTION:-

Beams are horizontal structural elements used for thr supporting lateral loads.
In conventional reinforced concrete structures ,beams usually receive 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 quality of longitudinal and shear reinforcement that will satisfy ultimate and serviceability limit state requirments.
Afterwards ,it is very important that the beam reinforcements are placed and arranged properly on site ,to avoid construction error.

PROCEDURE:-

Step(1):

Step(2):

Step(3):

Next we have to start the beam design by selecting the 'start Design/check' option as shown below.

Step(4):

After the completion of the beam design,we need to select the 'Display Design Info',as shown below.

After selecting the 'Display Design Info' option the new tab appears ,in that we select the longitudinal reinforcement in the Design output and click on te OK button,as shown below.

Step(5):

Next we need to draw the reinforcement diagram of 3 span continuous beam along Grid-A ,and also need to provide the reinforcement details.
The maximum Ast for the bottom support is 1766mm2 and bottom middle is 702mm2.
The maximum Ast for the top support is 1889mm2 and top middle is 435mm2.
Now we provide 3 bars of 28mm dia.at the top and bottom ,as shown in the below figure.
Next we provide 1 bar of 8mm dia.at the top supports for the continuous beam as shown below.

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 maximun Ast for the bottom support is 1061mm2 and bottom middle is 1493mm2.
The maximum Ast for the top support is 1915mm2 and top middle is 479mm2.
Now we provide 3 bars of 22mm dia. at the top and bottom ,as shown in the below figure.
Next we provide 1 bar of 10mm dia. and 1 bar of 12mm dia. at top supports and we provide 2 bars of 16mm dia.at the bottom middle for the continuous beam,as shown below.

Step(7):

After providing the beam reinforcement details,we select the beam and right click on the beam then the new tab appears ,as shown below.
Next we need to cick on the details option in concrete beam design tab ,as shown below.

RESULT:-

The beams are designed successfully in detail from the Etabs software.
Provided the details of longitudinal and shear reinforcement for the two continuous beams.
And also calculated the value of maximum shear force in the continuous beams using the Etabs sofware.

Ship work like this
in your own course.