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Re: Wood Construction Holdowns at Corners

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Gary -

PHDs are a Simpson hold-down product that are designed with the
intent of eliminating (or at least minimizing) post uplift
deformations due to initial straining of the HD under load.

Compare this against the HD/HDA series of hold-downs which are
basically folded metal straps, making them very susceptible to
plate deformations due to the load of the anchor bolt.


Charley Hamilton
Charles Hamilton, PhD EIT               Faculty Fellow
Department of Civil and                 Phone: 949.824.3752
    Environmental Engineering           FAX:   949.824.2117
University of California, Irvine        Email: chamilto(--nospam--at)

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