Steel Shop Drawing Checker Calculator

Estimated Review Hours is a sum of four separate per-item rates -- roughly one hour per 18 pieces, 0.5 hr per connection detail, 0.25 hr per embed plate, and 0.75 hr per RFI -- then multiplied by a revision penalty that adds 20% for every revision past the initial Rev 0 submittal. RFIs carry the single largest per-unit rate of the four (0.75 hr each), but at the defaults there are only 5 of them; Connection Details Count still ends up contributing the largest share of the hour subtotal (15 of the 32.1-hour default total, about 47%, versus 30 default details at 0.5 hr each), and a 10% increase in connection details count moves total hours by more than an equivalent 10% increase in any other single input.

Revision Number compounds rather than adds a flat amount: at the maximum 20 revisions, the multiplier reaches 1 + 20 x 0.2 = 5x, which is why a package that takes 32 hours at Rev 0 balloons to over 160 hours by Rev 20 -- and Complexity Score and Checker Level climb right alongside it, since revision count itself is a direct complexity factor, not just a time multiplier. At the defaults (150 pieces, 30 connection details, 20 embed plates, 5 RFIs, Rev 0), the estimate comes out to about 32 hours, a complexity score of 75, and a recommended Senior-level checker.