WAC 296-874-40026   Meet these requirements when using ladder jack scaffolds.  

     You must:

     • Make sure the platform height is not higher than twenty feet (6.1 m).

     • Make sure ladder jacks are designed and constructed so they rest:

     – On the side rails and ladder rungs together;

     OR

     – Only on the rungs.

     • Make sure ladder jacks that rest on rungs only have a bearing area that includes a length of at least ten inches (25.4 cm) on each rung.

     • Make sure ladders used to support ladder jacks are:

     – Type I (two hundred fifty pound rated capacity) or Type IA (300 pound rated capacity);

     AND

     – Are placed, fastened, or equipped with devices to prevent slipping.

Note:

Ladders with a duty rating or weight capacity greater than a Type I ladder (250 pounds) satisfy the requirement to use a Type I or Type IA ladder.

     You must:

     • Make sure job-made ladders are not used to support ladder jack scaffolds.

     • Make sure scaffold platforms are not bridged together.

Reference:	• There are specific fall protection requirements for employees using ladder jack scaffolds. Go to WAC 296-874-20056.
	• Requirements for portable and fixed ladders are found in chapter 296-876 WAC, Ladders, portable and fixed.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 06-16-020, § 296-874-40026, filed 7/24/06, effective 12/1/06; 05-01-054, § 296-874-40026, filed 12/7/04, effective 3/1/05.]