Standard Interpretations - Table of Contents|
| Standard Number:||1926.451; 1926.451(g)(4); 1926.451(b)(8)|
April 30, 2010
(vii) Each toprail or equivalent member of a guardrail system shall be capable of withstanding, without failure, a force applied in any downward or horizontal direction at any point along its top edge of at least 100 pounds (445 n) for guardrail systems installed on single-point adjustable suspension scaffolds or two-point adjustable suspension scaffolds, and at least 200 pounds (890 n) for guardrail systems installed on all other scaffolds.
Employers must ensure that scaffolds are designed, erected and maintained in accordance with the applicable
provisions of Subpart L of Part 1926. Section 1926.45 l(g)(4), which provides requirements for guardrail
systems, does not mandate a particular material to be used for securing the toprails and the midrails on
(8) At all points of a scaffold where the platform changes direction, such as turning a corner, any platform that rests on a bearer at an angle other than a right angle shall be laid first, and platforms which rest at right angles over the same bearer shall be laid second, on top of the first platform.
When turning a corner at an angle other than a right angle and using transitional wood planks and aluminum
hook-on planks, section 1926.451(b)(8) requires that the wood planks, which rest on a bearer at an angle
other than a right angle, be laid first and the aluminum hook-on planks, which rest at right angles over
the same bearer, be laid second, on top of the wood planks. This method is not desirable because the hook,
which rests on top of the flat wood plank, creates a tripping hazard.
|Standard Interpretations - Table of Contents|
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