Analysis & Design of RCC shear walls in the model using ETABS

ANSWER:-

Aim:- To provide,

The cross sectional steel arrangement of the shear wall from its base up to terrace, in compliance with provisions of IS 13920 – 2016.

The drawings of the reinforcement details of the shear wall from base up to terrace.

Introduction:-

• Shear walls are vertical elements of the horizontal force resisting system.
• They are constructed to counter the effects of lateral load acting on a structure.
• When shear walls are designed and constructed properly, and they will have the strength and stiffness to resist the horizontal forces.
• Shear walls are especially important in high- rise buildings subjected to lateral wind and seismic forces.
• Shear walls are not only designed to resist gravity / vertical loads, but they are also designed for lateral loads of earthquakes / wind.

Procedure:-

Step:-1

• First open the attachment file in challange 9 page and download the challenge.
• After downloading the Challenge open it in the etabs 2018, as shown below.

Step:-2

• Open the plan View in terrance level & select options to all storeys.

• Next Select The Shear wall & Click the right click & Select the show selected object only.

Step:-3

• Next select the elevation view grid 11.

Step:-3

• Next go to view display options & select the other assignments & click the labels options & apply.

Step:-4

• Next Go back same above process & uncheck the labels option & apply & run analysis.

Step:-5

• Select the shear wall design Click & check it.

Step:-6

• Next Click the shear wall design down arrow & select the display design info.
• Next change the design output longitudinal reinforcing to shear reinforcing & edge/boundaryzones widths.

.

Step:-7

• Next right click on the shear wall, the design details of shear wall will be visible, as shown below.

DESIGN SUMMARY:

• FLEXURAL INFORMATION:

• SHEAR INFORMATION:

• BOUNDARY WIDTH DATA:

Thickness of the Wall:

• So first property that we are going to check is the Thickness of the wall.
• According to the IS 13920:2016 clause no 10.1.2,this clause state that the minimum allowable thickness of the shear wall should not be less than the 150mm.
• But in our case the thickness of the shear wall given is 300mm which is greater than the 150mm suggested by the IS code 13920:2016. Hence our design is safe.

Shear wall type:

• According to the IS 13920:2016,clause 10.1.4,suggest that we have three different types of the shear walls based on their geometrical properties and these walls are listed below:

RESULT:-

• Provided the cross sectional steel arrangement of the shear wall from its base up to terrace, in compliance with provisions of IS 13920 – 2016.
• Provided the drawings of the reinforcement details of the shear wall from base up to terrace.
• Designed the RCC shear walls using the values of longitudinal steel ratio, boundary element length and shear reinforcing ratio from the etabs design results.