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Shear Wall Design Limits per ACI 318-19 with ideCAD

How does ideCAD control reinforced concrete shear wall design limits according to ACI 318-19?

  • The minimum wall thickness control is done automatically.

  • The wall dimensions are determined by the user.


bw = the width of the web of the wall segment, in.
h = overall thickness, height, or depth of member, in.
hw = height of entire wall from base to top, or clear height of wall segment or wall pier considered, in.
lw = length of entire wall, or length of wall segment or wall pier considered in direction of shear force, in.

According to ACI, minimum wall thicknesses should be in accordance with ACI Table

Wall type

Minimum wall thicjness, h


Gerater of:

4 in.

1/25 the lesser of unsupported length and unsupported height


Gerater of:

4 in.

1/30 the lesser of unsupported length and unsupported height

Exterior basement and foundation

7.5 in.

Earthquake Resistant Structures

Special structural walls

Concrete Shear Wall Design per ACI 318-19 §11, §18.10 title also contains requirements for the dimensions and details of special structural walls and all components. Design provisions for special structural walls depend on the ratio of the wall dimensions such as (hw/lw) and (lw/bw).

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