A scaffold platform must generally be fully planked or decked between the front uprights and the guardrail supports, with a gap no greater than:
Explanation
The platform must be fully planked or decked between the front uprights and the guardrail supports, with the space between adjacent planking units and between the platform and the uprights no more than 1 inch. The relief runs in the opposite direction from what candidates expect: the gap may reach 9 1/2 inches only where the employer can demonstrate that a wider space is necessary to fit the platform around the uprights. Three, six and twelve inches are each wide enough to drop a hammer through onto the crew below or to catch a boot, and none of them appears in the standard as a general allowance.
Law Reference: 8 CCR §1637(f); 29 CFR 1926.451(b)(1)This topic, taught in full in the CSLB Law & Business guide. CSLB Law & Business — Complete Study Guide (2026) — PDF + EPUB, $24.99 · 14-day refund →
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