Standard Interpretations - Table of Contents|
| Standard Number:||1926.760; 1926.760(c); 1926.760(c)(3); 1926.760(c)(5)|
|OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at http://www.osha.gov.|
(3) The boundaries of a CDZ shall be designated and clearly marked. The CDZ shall not be more than 90 feet (27.4 m) wide and 90 feet (27.4 m) deep from any leading edge. The CDZ shall be marked by the use of control lines or the equivalent. Examples of acceptable procedures for demarcating CDZs can be found in Appendix D to this subpart. [Emphasis added.]Under these provisions, the CDZ must be "clearly ... marked by the use of control lines or the equivalent."1 Restricting access to an entire floor would be "equivalent" to control lines where both of the following conditions are met: (1) the points of access to the floor are limited and can be controlled (such as where the only means of access to the floor is by a single ladder); and (2) each point of access (such as the base of a ladder leading to the floor) is marked with a warning sign indicating that access is restricted to Controlled Decking Zone workers.
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(5) Unsecured decking in a CDZ shall not exceed 3,000 square feet (914.4 m2).
Question 48: Section 1926.760(c)(3) & Appendix D: The suggested example in the appendix states that "any other means that restricts access" may be used instead of control lines. What are some examples of other means?[ back to text ]
Answer: Section 1926.760(c)(3) requires that the boundaries of the CDZ be marked "by the use of control lines or the equivalent." In a CDZ, the control line restricts access by visually warning employees of an unprotected area (66 FR 5247). Control lines can be made of rope, wire, tape, or other equivalent materials, but they must clearly designate the CDZ. Examples of other acceptable methods would be a perimeter wall, guardrail system, or even a restraint system rigged so that non-leading edge workers could not access the area. In contrast, a line painted on the floor would not be considered to be equivalent to control lines since it would be less visible than a control line.
|Standard Interpretations - Table of Contents|