Selection of standard steel doors for general usage is made by analyzing criteria such as frequency of use, including subjection to and degree of possible abuse. Other criteria to be considered in door selections are: Conformance to local building codes and firecode regulations: soud attenuation and /or insulation requirements: and architectural design and appearance.
Table 2 is a reference aid matching standard duty, heavy duty. extra heavy duty and maximum duty doors with general usage requirements within the classification of buildings. Where optional door levels are indicated, further analysis on an individual job basis is recommended.
When unusual or special door usage conditions are encountered, contact a representative member tor consultation ali guidance.