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Re: Load Capacity of a Holddown Post as a Compression Member

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"Nels Roselund, SE" <njineer(--nospam--at)att.net> wrote:
Is there a rational way to determine the design capacity of a compression member in which the applied load increases linearly along its length from zero at one end to a maximum at the other end, as for a shearwall holddown post.at the end of a shear wall?  I assume that the capacity would be greater than if the load is applied in end bearing each end.
 
Nels Roselund
Structural Engineer
South San Gabriel, CA
njineer(--nospam--at)att.net


If you're looking for the critical (buckling) load, you're looking for the answers in Table 34, case 3c of Roark's. All four common end fixities are given (fixed/pinned combinations), and coefficients for Euler's formula are provided to adjust for the variable application of axial force.

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