296-876-60050 - Extensions and grab bars

296-876-60050. Extensions and grab bars

(1) You must make sure the side rails of through or side-step ladders extend forty-two inches above the top of the access level or landing platform.


For a parapet ladder, the access level is:

1. The roof if the parapet is cut to permit passage through it; or

2. The top of the parapet if it is continuous and uncut.

(2) You must make sure the extension of a through ladder above the access level or landing platform has:

(a) Steps or rungs omitted from the extension; and

(b) Clearance between the side rails that is:

(i) Not less than twenty-four inches; or

(ii) Greater than thirty inches.


The maximum clearance between side rails of the extension may be increased to thirty-six inches if the ladder has a ladder safety device.

(3) You must make sure side-step ladders have the steps or rungs and the side rails continuous in the extension (see Figure D-2 in WAC 296-876-60030).

(4) You must make sure individual rung-step ladders are extended at least forty-two inches above the access level or landing platform by:

(a) Continuing the rung spacings as horizontal grab bars; or

(b) Providing vertical grab bars that have the same lateral spacing as the vertical legs of the rungs.


Extensions are not required for individual rung-step ladders with access openings through a manhole or hatch.

(5) You must make sure grab bars:

(a) Are at least four inches from the nearest permanent object in back of the grab bar, measured from the centerline of the grab bar;

(b) Do not extend beyond the rungs on the climbing side of the ladder; and

(c) The minimum size (cross-section) of grab bars is the same size as the rungs of the ladder.


WAC 296-876-60050(5)(c) applies to general industry only. See the exemption list in the scope section of WAC 296-876-100 for more information.

(Amended by WSR 14-09-095, filed 4/22/14, effective 7/1/14 Amended by WSR 16-23-141, Filed 11/22/2016, effective 12/23/2016 Amended by WSR 20-09-146, Filed 4/21/2020, effective 10/1/2020)

Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 06-16-020, ยง 296-876-60050, filed 7/24/06, effective 12/1/06.

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