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PDFWAC 296-874-40032

Meet these requirements when using pump jack scaffolds.

(1) You must make sure pump jack brackets, braces, and accessories are made from metal plates and angles.
(2) You must make sure pump jack brackets have two positive gripping mechanisms to prevent any failure or slippage.
(3) You must secure poles to the structure using rigid triangular bracing or the equivalent located at all of the following:
(a) Top;
(b) Bottom;
(c) Other points on the pole as necessary.
(4) You must do both of the following when the pump jack has to pass bracing that's already installed:
(a) Install an additional brace approximately four feet (1.2 m) above the brace to be passed.
(b) Leave it in place until:
(i) The pump jack has been moved; and
(ii) The original brace is reinstalled.
(5) You must make sure work benches are not used as scaffold platforms.
A work bench may be used as a toprail only if it meets the toprail requirements in Make sure guardrail systems meet these requirements, WAC 296-874-20064.
(6) You must make sure wood poles used with pump jack scaffolds are:
(a) Straight grained; and
(b) Free of shakes, large loose or dead knots, and other defects which might impair strength.
(7) You must make sure wood poles that are constructed of two continuous lengths are joined together with the seam parallel to the bracket.
(8) You must install a mending plate at all splices to develop the full strength of the member when splicing two by fours together to make a pole.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050. WSR 15-23-086, § 296-874-40032, 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, § 296-874-40032, filed 12/7/04, effective 3/1/05.]
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