Controlled decking zone (CDZ)

1.What is a controlled decking zone (CDZ)? What are the requirements for working in a CDZ?

2.Describe four duties of the controlling contractor on a steel erection site.

3.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.

4.Discuss some ways that employee exposure to overhead loads during steel erection can be reduced. When is working under a load permitted?

A controlled decking zone is established in an area of the structure of more than 15 and up to 30 feet above a lower level where metal decking is initially being installed and forms the leading edge of a work area. Employees working at the leading edge in a CDZ shall be protected from fall hazards of more than 2 stories or 30 feet, or whichever is less. Access to a CDZ shall be limited to those employees engaged in leading edge work. The boundaries of the CDZ shall be designated and clearly marked to limit access. The CDZ shall not be more than 90 feet wide and 90 feet deep from any leading edge. The CDZ shall be clearly marked by the use of control lines or the equivalent.

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