PDFWAC 296-155-697

Requirements for masonry construction.

(1) You must establish a limited access zone whenever a masonry wall is being constructed. The limited access zone must conform to the following:
(2) You must establish the limited access zone prior to the start of construction of the wall.
(3) The limited access zone must be equal to the height of the wall to be constructed plus 4 feet, and must run the entire length of the wall.
(4) You must establish the limited access zone on the side of the wall which will be unscaffolded.
(5) You must restrict entry into the limited access zone to only employees actively engaged in constructing the wall. You must not permit any other employees to enter the zone.
(6) The limited access zone must remain in place until the wall is adequately supported to prevent overturning and to prevent collapse unless the height of wall is over 8 feet, in which case, the limited access zone must remain in place until the requirements of subsection (7) of this section have been met.
(7) All masonry walls over 8 feet in height must be adequately braced to prevent overturning and to prevent collapse unless the wall is adequately supported so that it will not overturn or collapse. The bracing must remain in place until permanent supporting elements of the structure are in place.
(8) Employees engaged in cutting or chipping must wear suitable eye protection in accordance with WAC 296-155-215.
(9) You must construct, guard, and operate masonry saws in accordance with WAC 296-155-367 (1) through (4).
(10) Persons charged with operation of derricks used for stone setting must be qualified in that type of work.
(11) Stone must be set directly on the wall by the derrick.
(12) Breast derricks when used in setting stone must be secured against a slip or kick back and guyed with wire cables. Provide hold down line to prevent derrick from falling back.
(13) Stone cutters must wear goggles while trimming stone or cutting holes.
(14) You must test pins for security before stone is hoisted.
(15) You must protect hoisting cables from chafing and wearing over corners.
(16) Mason's mortar mixers must have a bar-type grill installed over the mixer opening. The guard must be installed with an automatic disconnect switch to stop the mixer tub rotation and prevent the mixer from starting whenever the guard is not in place.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-697, filed 4/19/16, effective 5/20/16. Statutory Authority: Chapter 49.17 RCW. WSR 90-17-051 (Order 90-10), § 296-155-697, filed 8/13/90, effective 9/24/90; WSR 90-03-029 (Order 89-20), § 296-155-697, filed 1/11/90, effective 2/26/90; WSR 89-11-035 (Order 89-03), § 296-155-697, filed 5/15/89, effective 6/30/89.]