DSA IR 11B-8 - USE OF PREDETERMINED CONSTRUCTION TOLERANCE GUIDELINES FOR ACCESSIBILITY (with revisions issued through Jan. 2011)

2. REGULATORY BUILT-IN TOLERANCES: California Building Code Section 1101B.5 indicates all dimensions are subject to conventional industry tolerances except where the requirement is stated as a range with specific minimum and maximum end points. Where a California Building Code requirement states a specified range, such as in Section 1133B.4.2.1 where handrails must be installed between 34 inches and 38 inches above the nosing, the regulation itself already provides an adequate tolerance and therefore no further tolerance outside of the range at either limit is permitted. In such cases, the technological capacity to achieve literal compliance with the dimensional requirements is quite easy to accomplish.