California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 4 - Construction Safety Orders
Article 22 - Scaffolds-Various Types
Section 1642 - Schedules of Timber Scaffolds up to 60 Feet in Height
Universal Citation: 8 CA Code of Regs 1642
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(Listed lumber sizes are those required for the specified spans; other sizes may be used for different spans, if equivalent strength is provided.)
| Interior | Light Trades | Heavy Trades | ||
| Uprights for scaffolds not over 20'in height.......................... | 2"x4" | 2"x4" | 4"x4" | |
| Uprights for scaffolds 20' to 60'in height.......................... | 3"x4" | 3"x4" | 4"x6" | |
| Ribbons directly under ledgers.......................... | 1"x6" | 1"x6" | 1"x6" | |
| Ledgers.......................... | 2"x10" | 2--1"x6" | 2--1"x6" or 1--2"x6" | |
| Spacing uprights, transverse, at right angles to platform planks.......................... | 10' | 3' in clear | 4' in clear | |
| Spacing uprights, longitudinal, parallel to direction of platform planks.......................... | 10' | 10' | 7' | |
| Spacing ribbons or ledgers, vertical.......................... | 7' 0" max. | 7' 0" max. | 7' 0" max. | |
| Splice pieces 48" long | ||||
| (for uprights).......................... | 2--1"x4" or (2--2"x4") | 2--1"x4" or (2--2"x4") | 2--2"x4" | |
| Braces.......................... | 1"x6" | 1"x6" | 1"x6" | |
| Railing.......................... | 2"x4" | 2"x4" | 2"x4" | |
| Toeboard.......................... | 1"x4" | 1"x4" | 1"x4" | |
| Width of platform.......................... | 10' | 3' max. | 4' max. | |
| Planking.......................... | 2" thick and at least 10" wide | |||
1. Repealer and new section filed 11-14-75; effective thirtieth day thereafter (Register 75, No. 46).
2. Amendment filed 3-19-79; effective thirtieth day thereafter (Register 79, No. 12).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
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