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PDFWAC 296-874-20024

Make sure stairway-type ladders meet these requirements.

(1) You must make sure stairway-type ladders meet all of the following:
(a) Position the bottom step not more than twenty-four inches (61 cm) above the scaffold supporting level;
(b) Have rest platforms not more than twelve feet (3.7 m) apart vertically;
(c) Have slip-resistant surfaces on treads and landings;
(d) Have steps that:
(i) Are at least sixteen inches (41 cm) wide; and
(ii) Line up vertically between rest platforms.
(2) You must make sure mobile ladder stands have steps that are at least eleven and one-half inches (30 cm) wide.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050. WSR 15-23-086, § 296-874-20024, filed 11/17/15, effective 12/18/15. Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 05-01-054, § 296-874-20024, filed 12/7/04, effective 3/1/05.]
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