Section 296-155-675. Scope, application, and definitions applicable to this part.

(1) Scope and application. This part sets forth requirements to protect all construction employees from the hazards associated with concrete and masonry construction operations performed in workplaces covered under chapter 296-155 WAC.

(2) Definitions applicable to this part.

Bull float. A tool used to spread out and smooth the concrete.

Formwork. The total system of support for freshly placed or partially cured concrete, including the mold or sheeting (form) that is in contact with the concrete as well as all supporting members including shores, reshores, hardware, braces, and related hardware.

Jacking operation. The task of lifting a slab (or group of slabs) vertically from one location to another (e.g., from the casting location to a temporary (parked) location, or from a temporary location to another temporary location, or to its final location in the structure), during the construction of a building/structure where the lift-slab process is being used.

Lift slab. A method of concrete construction in which floor and roof slabs are cast on or at ground level and, using jacks, lifted into position.

Limited access zone. An area alongside a masonry wall, which is under construction, and which is clearly demarcated to limit access by employees.

Precast concrete. Concrete members (such as walls, panels, slabs, columns, and beams) which have been formed, cast, and cured prior to final placement in a structure.

Reshoring. The construction operation in which shoring equipment (also called reshores or reshoring equipment) is placed, as the original forms and shores are removed, in order to support partially cured concrete and construction loads.

Shore. A supporting member that resists a compressive force imposed by a load.

Vertical slip forms. Forms which are jacked vertically during the placement of concrete.

Guy. A line that steadies a high piece or structure by pulling against an off-center load.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-675, filed 4/19/16, effective 5/20/16. Statutory Authority: Chapter 49.17 RCW. WSR 94-15-096 (Order 94-07), § 296-155-675, filed 7/20/94, effective 9/20/94; WSR 91-11-070 (Order 91-01), § 296-155-675, filed 5/20/91, effective 6/20/91; WSR 90-03-029 (Order 89-20), § 296-155-675, filed 1/11/90, effective 2/26/90; WSR 89-11-035 (Order 89-03), § 296-155-675, filed 5/15/89, effective 6/30/89; Order 74-26, § 296-155-675, filed 5/7/74, effective 6/6/74.]

RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. WSR 16-09-085, § 296-155-675, filed 4/19/16, effective 5/20/16. Statutory Authority: Chapter 49.17 RCW. WSR 94-15-096 (Order 94-07), § 296-155-675, filed 7/20/94, effective 9/20/94; WSR 91-11-070 (Order 91-01), § 296-155-675, filed 5/20/91, effective 6/20/91; WSR 90-03-029 (Order 89-20), § 296-155-675, filed 1/11/90, effective 2/26/90; WSR 89-11-035 (Order 89-03), § 296-155-675, filed 5/15/89, effective 6/30/89; Order 74-26, § 296-155-675, filed 5/7/74, effective 6/6/74.

Rules

296-155,