CSLB C-33
1/4 The distance from a wall to the foot of a ladder
2 workers On suspension scaffold
2"x 10" Minimum size of scaffold plank
3/8" - 1 1/2" Considered long nap roller
3 ladder rungs Do not of a straight ladder without a safety belt
4' The closest a metal ladder should come to electrical equipment
6' Safe distance requirement from overhead electrical lines between 600-
50,000 V
10' Max height of a tiered horse scaffold
10 to 20 mils Thickness to apply elastomeric coating
2/4/2026
, CSLB C-33
11.5" Ladder rungs must be at least this long
12" Ladder rung spacing
12" Extension of plank between sawhorse and step ladder for use as scaffold
13lbs Guardrails must withstand
15' Safety belt must be provided if worker is this high
16' Max height of ladder jack scaffold
16" high 2 people Maximum on ladder jack scaffold
19.5% Respirator must be worn if oxygen is below
20' Stepladder may not exceed
20% Flammable gas or vapor creates dangerous air contamination if greater than
2/4/2026
1/4 The distance from a wall to the foot of a ladder
2 workers On suspension scaffold
2"x 10" Minimum size of scaffold plank
3/8" - 1 1/2" Considered long nap roller
3 ladder rungs Do not of a straight ladder without a safety belt
4' The closest a metal ladder should come to electrical equipment
6' Safe distance requirement from overhead electrical lines between 600-
50,000 V
10' Max height of a tiered horse scaffold
10 to 20 mils Thickness to apply elastomeric coating
2/4/2026
, CSLB C-33
11.5" Ladder rungs must be at least this long
12" Ladder rung spacing
12" Extension of plank between sawhorse and step ladder for use as scaffold
13lbs Guardrails must withstand
15' Safety belt must be provided if worker is this high
16' Max height of ladder jack scaffold
16" high 2 people Maximum on ladder jack scaffold
19.5% Respirator must be worn if oxygen is below
20' Stepladder may not exceed
20% Flammable gas or vapor creates dangerous air contamination if greater than
2/4/2026
