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Shear Wall Design

 
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srimurugan
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Joined: 31 Jan 2013
Posts: 1
Location: Madurai

PostPosted: Sat Jan 17, 2015 12:33 pm    Post subject: Shear Wall Design Reply with quote

Dear Sefians,

This proposed structure is a G+4 Residential Flat at Cochin. We have considered seismic loads & wind loads.Width of column has been increased to 300mm when we considered these aspects.We tried to provide the column width as 200 mm around the lift but it becomes very difficult.

Deep pile foundation is considered for this structure with varying pile diameter of 600mm & 900mm upto a depth of 30m.

Following are the queries in our project.

Suppose If I considered wind loads and seismic loads whether it is possible to reduce the width of column size either 200mm or 230mm for this G+4 structure.

If we planned to provide shear wall around the lift, whether it is possible to neglect the all the four columns in the lift regions.

How the load is transferred from shear wall to the pile?

When we have considered the shear wall in staad model, it shows some error “no rebar is available for vertical reinforcement”.

I kindly request all the sefians to give your valuable suggestions.
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mehtavin
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Joined: 07 May 2009
Posts: 28

PostPosted: Sun Jan 18, 2015 7:27 am    Post subject: Re: Shear Wall Design Reply with quote

Dear Er. Murugan,

1. The size of columns should be maintained minimum 300 mm x 300 mm in case of seismic loads. IMHO this should never be reduced even for low rise structures.

2. The loads coming on the four columns around the lift shall decide whether you can replace them with four shear walls. If the major moment is across the plane of shear wall, you may not be able to replace the columns.

3. The load transfer from shear wall to pile shall depend upon the arrangement of piles below the shear wall. Make free body diagram to understand the load flow and you shall be able to design the group of piles accordingly.

Regards,

Vinay Mehta

srimurugan wrote:
Dear Sefians,

This proposed structure is a G+4 Residential Flat at Cochin. We have considered seismic loads & wind loads.Width of column has been increased to 300mm when we considered these aspects.We tried to provide the column width as 200 mm around the lift but it becomes very difficult.

Deep pile foundation is considered for this structure with varying pile diameter of 600mm & 900mm upto a depth of 30m.

Following are the queries in our project.

Suppose If I considered wind loads and seismic loads whether it is possible to reduce the width of column size either 200mm or 230mm for this G+4 structure.

If we planned to provide shear wall around the lift, whether it is possible to neglect the all the four columns in the lift regions.

How the load is transferred from shear wall to the pile?

When we have considered the shear wall in staad model, it shows some error “no rebar is available for vertical reinforcement”.

I kindly request all the sefians to give your valuable suggestions.
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