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Re: Threaded anchor rod

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It is always so. Ask any designer, they always calculate the strength of the bolt in its core diameter, and not the shank or nominal diameter. Normally, .8( 8 / 10 ) times the nominal cross-sectional area of the bolt is assumed as the effective area(core area/ threaded area).

Dipak Bhattacharya.
On 10/11/2011 7:59 PM, JORGE JIMENEZ wrote:
I specified 1" diameter anchor rods for a foundation. In the field I found the anchor rods having 7/8" diamenter in its threaded part. The contractor said that the anchor rods were fabricated from 1" diameter rods and some material is lost in the thread fabrication. It is correct? What specification covers de dimension and tolerances for fabricated threads?
Jorge Jimenez, PE

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