- Part Number:1926
 - Part Number Title:Safety and Health Regulations for Construction
 - Subpart:1926 Subpart Q
 - Subpart Title:Concrete and Masonry Construction
 - Standard Number:
 - Title:Requirements for masonry construction.
 - GPO Source:
 
The limited access zone shall be equal to the height of the wall to be constructed plus four feet, and shall run the entire length of the wall.