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Subchapter 4. Construction Safety Orders
Article 22. Scaffolds--Various Types
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§1642. Schedules of Timber Scaffolds up to 60 Feet in Height.

(Listed lumber sizes are those required for the specified spans; other sizes may be used for different spans, if equivalent strength is provided.) 


                                  		       Light 			Heavy
                                 Interior     Trades            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--1"x4" or        2--2"x4" 
                                 (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

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

HISTORY

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).

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