Take Test: Unit VIII Assessment

Question 1

 What is a controlled decking zone (CDZ)? What are the requirements for working in a CDZ? Describe four duties of the controlling contractor on a steel erection site.

Your response should be at least 75 words in length.

50 points  

A controlled decking zone (CDZ) is an area in which certain work may take place without the use of guardrail systems, personal fall arrest systems, fall restraint systems, or safety net systems and where access to the zone is controlled (OSHA, 2001). Access to a CDZ is limited to only the employees engaging in leading edge work, in order to minimize the potential for a hazard. The boundaries of the CDZ need to be designated and clearly marked in order to limit access, as well as being no more than 90 feet wide by 90 feet deep from any leading edge. Each employee that works in the CDZ is also required to go through complete CDZ training.

Subpart R contains several specific duties that have been placed on the controlling contractor. They include: providing written notification to the steel erector of any repair, replacement or modification of the anchor bolts prior to erection of a column (1926.755(b)(2)); barring other construction processes below steel erection unless sufficient protection is provided for employees below (1926.759(b)); choosing either to accept control and responsibility of certain fall protection measures or having them removed (1926.760(e)); ensuring that the steel erector is provided written notification that the footings, piers and walls have sufficient strength to support the loads imposed during the steel erection process (1926.752(a)).

References

Occupational Safety & Health Administration. (2001). Regulations (Standards – 29 CFR): Steel erection: Definitions. Retrieved from https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10787

Occupational Safety & Health Administration. (n.d.). Regulations (Standards – 29 CFR): 1926 Subpart R – Steel erection. Retrieved from https://www.osha.gov/pls/oshaweb/owasrch.search_form?p_doc_type=STANDARDS&p_toc_level=1&p_keyvalue=1926

Question 2

 Explain the difference in fall protection requirements for connectors working in steel erection between 15 feet and 30 feet in height and connectors working more than two stories or 30 feet in height.

Your response should be at least 75 words in length.

50 points  

Connectors working more than two stories or thirty feet (whichever is less) are required to be protected by guardrail systems, safety net systems, personal fall arrest systems, positioning device systems, or fall restraint system (1926.760(b)(1)). Connectors working between fifteen and thirty feet are required to be protected with a personal fall arrest system, positioning device system or fall restraint system and also wear equipment that is necessary to tie them off, or they be provided with alternate appropriate protection from fall hazards in accordance with paragraph (a)(1)(1926.760(b)(3)).

Reference

Occupational Safety & Health Administration. (2001) Regulations (Standards – 29 CFR) 1926.760 Subpart R – https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=12751