![]() ![]() Neither PLIB nor its members assume any responsibility for any particular design prepared from this on-line calculator. PLIB believes the information generated by this calculator is accurate and conforms with design standards referenced by U.S. 17 and/or the National Design Specification (NDS) Supplement published by the American Wood Council for adjustment factors. For other service conditions or load conditions, see paragraph 200 a-l in WCLB Standard No. In calculating the design values, the change in strength and stiffness that occurs as lumber dries has been taken into consideration as well as the reducing in size that occurs when unseasoned lumber shrinks. Note: The design values shown in the table are for normal load duration and dry service conditions and are applicable to lumber surfaced either unseasoned (S-GRN) or dry (S-DRY or KD).
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