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End Chord Bending Deflection

The first term in both the 3-term and 4-term equations relates to the in-plane bending of the shear wall chords, that is, the wall end studs.

Modulus of Elasticity E

An input field has been added to Shearwalls to allow for input of the grade of the wood end studs. The modulus of elasticity is then taken from the WoodWorks database of material properties.

Cross sectional area A

This is the section area end studs, which are typically built-up members. Shearwalls now allows you to input wall end stud thickness, width, and number of end studs from which the cross-sectional area is calculated.

End Post Composition

Shearwalls does not allow for wall chord posts that are not made up of built-up wall studs but it is possible to model such a situation by typing in a value for the stud thickness, as it has no effect on shear wall design. However you cannot change the wall stud species to the one for the end post without having an effect on shear wall design, which depends on species group For MSR/MEL you cannot change the grade without having an effect on design.

See Also

Deflection Equation and Components

Physical Parameters

Panel Shear Deflection

Nail Slip Deflection

Combined Shear and Nail Slip Deflection

Hold-down Displacement