Hennepin County

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PROJECT QUESTION: The No. 8 finish is difficult to attain, as there will be minor pitting I am told. How critical is this?

Question: The No. 8 finish is difficult to attain, as there will be minor pitting I am told. How critical is this?

Response: A No. 8 finish is required and in talking with a supplier the No. 8 finish or near No. 8 finish (Ra value between 2 and 5) is obtainable. Regarding pitting, the cap beam plate should be etched anyway to roughen it so pitting on this plate may be acceptable. Plates shall meet the requirements of ASTM A 480 which includes directions on the repairs of plate defects.