Standard Shearing (Cutting) Tolerances
 
Type
Length Tolerance
Panel Width Tolerance
Bar Grating: Rectangular bar, T-Bar, I-Bar, Welded, Swage Locked, and Press Locked. +/- 1/4 inch +/- 1 Bearing Bar
Trench Applications +0 / -1/4 inch +/- 1 Bearing Bar
Optional +1/4 / -0 inch  
 

 
Standard Stair Tread Length Tolerance
 
Unless otherwise specified, stair tread length tolerance is ±0, -1/8 inch.