Answer:
at least 6
Step-by-step explanation:
Occupational Safety and Health Act of 1970 authorized Secretary of Labor for the adoption of the established federal standards that are issued under other statutes, which includes CSA, as the occupational safety and the health standards.
According to 1926.451(b)(4),
The end of each platform, unless cleated or restrained by the hooks or by the equivalent means, the end shall extend at least 6 inches (15 cm) over centerline of support.
