OAKLAND -- Lay out: Subject to 7-1/2-foot trigger height. Exposure area: Performing layout on sheathing from first floor up. Relevant regulation: 1621(a).Exterior and interior wall erection: Subject to 7-1/2- foot trigger. Once wall is in place it constitutes fall protection if studs are 16 inches or less apart. Hallways need a guardrail when fall exposure exceeds 7-1/2 feet. Openings for patio doors or windows that have frames lower than three feet must have guardrails. Exposure area: When tiltin
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