Masons scaffold

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## Part 23 ## Scaffolds and Temporary Work Platforms ## Scaffolds ## CSA Standard applies 323 Subject to sections 324 and 325, an employer must ensure that scaffolds erected to provide working platforms during the construction, alteration, repair or demolition of buildings and other structures comply with CSA Standard CAN/CSA S269.2-M87 (R2003), Access Scaffolding for Construction Purposes . ## Design - 324 (1) An employer must ensure that a single pole or double pole scaffold is - (a) supported against lateral movement by adequate bracing, - (b) anchored by one tie-in for each 4.6 metre vertical interval and one tie-in for each 6.4 metre horizontal interval, - (c) anchored by one tie-in for each 3 metre vertical interval and one tie-in for each 3 metre horizontal interval if the scaffold is hoarded, and - (d) set plumb on a base plate, jackscrew or other load dispersing device on a stable surface. - 324 (2) An employer must ensure that ropes or wire ropes used in scaffolding are - (a) protected against fraying or other damage, and - (b) made of heat or chemical resistant material if there is a possibility of exposure to heat or chemicals. 324 (3) An employer must ensure that wooden scaffolds are constructed of unpainted dressed lumber. 324 (4) Despite subsection (1)(c), an employer must ensure that hoarded masonry walk-through scaffold frames - (a) are anchored by not less than one-tie in for each 9 square metres of hoarding surface area, and - (b) have vertical tie-ins spaced at least 2 metres apart but not more than 3 metres apart. 324 (5) If scaffolding or a temporary work platform can be damaged by powered mobile equipment or a vehicle contacting it, an employer must take reasonable measures to protect the scaffolding or temporary work platform from being contacted. ## Load 325 (1) An employer must ensure that a scaffold is designed and constructed to support at least 4 times the load that may be imposed on it. 325 (2) An employer must ensure that …

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## SCOPE, APPLICATION & DEFINITIONS APPLICABLE TO THIS SUBPART Lower levels means areas below the level where the employee is located and to which an employee can fall. Such areas include, but are not limited to, ground levels, floors, roofs, ramps, runways, excavations, pits, tanks, materials, water, and equipment. Masons' adjustable supported scaffold (see 'Self-contained adjustable scaffold'). Masons' multi-point adjustable suspension scaffold means a continuous run suspension scaffold designed and used for masonry operations. Maximum intended load means the total load of all persons, equipment, tools, materials, transmitted loads, and other loads reasonably anticipated to be applied to a scaffold or scaffold component at any one time. Mobile scaffold means a powered or unpowered, portable, caster or wheel-mounted supported scaffold. Multi-level suspended scaffold means a two-point or multi-point adjustable suspension scaffold with a series of platforms at various levels resting on common stirrups. Multi-point adjustable suspension scaffold means a suspension scaffold consisting of a platform(s) which is suspended by more than two ropes from overhead supports and equipped with means to raise and lower the platform to desired work levels. Such scaffolds include chimney hoists. Needle beam scaffold means a platform suspended from needle beams. Open sides and ends means the edges of a platform that are more than 14 inches (36 cm) away horizontally from a sturdy, continuous, vertical surface (such as a building wall) or a sturdy, continuous horizontal surface (such as a floor), or a point of access. Exception: For plastering and lathing operations the horizontal threshold distance is 18 inches (46 cm). Outrigger means the structural member of a supported scaffold used to increase the base width of a scaffold in order to provide support for and increased stability of the scaffold. Outrigger beam (Thrustout) means the structural member of a suspen…

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## GENERAL REQUIREMENTS - (iii) When erecting or dismantling tubular welded frame scaffolds, (end) frames, with horizontal members that are parallel, level and are not more than 22 inches apart vertically may be used as climbing devices for access, provided they are erected in a manner that creates a usable ladder and provides good hand hold and foot space. - (iv) Cross braces on tubular welded frame scaffolds shall not be used as a means of access or egress. ## (f) Use. - (1) Scaffolds and scaffold components shall not be loaded in excess of their maximum intended loads or rated capacities, whichever is less. - (2) The use of shore or lean-to scaffolds is prohibited. - (3) Scaffolds and scaffold components shall be inspected for visible defects by a competent person before each work shift, and after any occurrence which could affect a scaffold's structural integrity. - (4) Any part of a scaffold damaged or weakened such that its strength is less than that required by paragraph (a) of this section shall be immediately repaired or replaced, braced to meet those provisions, or removed from service until repaired. - (5) Scaffolds shall not be moved horizontally while employees are on them, unless they have been designed by a registered professional engineer specifically for such movement or, for mobile scaffolds, where the provisions of §1926.452(w) are followed. - (6) The clearance between scaffolds and power lines shall be as follows: Scaffolds shall not be erected, used, dismantled, altered, or moved such that they or any conductive material handled on them might come closer to exposed and energized power lines than as follows: ## Insulated Lines Exception to paragraph (f)(6): Scaffolds and materials may be closer to power lines than specified above where such clearance is necessary for performance of work, and only after the utility company, or electrical system operator, has been notified of the need to work closer and the utility company, or electrical syst…

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325 (3) An employer must ensure that a scaffold used to carry the equivalent of an evenly distributed load of more than 367 kilograms per square metre is - (a) designed and certified by a professional engineer, and - (b) constructed, maintained and used in accordance with the certified specifications. - 325 (4) Subsection (3) applies to a type of scaffold that is not otherwise specifically referred to in this Code. 325 (5) An employer must ensure that all workers on a scaffold are informed of the maximum load that the scaffold is permitted to carry. ## Tagging requirements 326 (1) An employer must ensure that a scaffold is colour coded using tags at each point of entry indicating its status and condition as follows: - (a) a green tag with 'Safe for Use', or similar wording, to indicate it is safe for use; - (b) a yellow tag with 'Caution: Potential or Unusual Hazard', or similar wording, to indicate the presence of a potential or unusual hazard; - (c) a red tag with 'Unsafe for Use', or similar wording, to indicate it is not safe to use. 326 (2) An employer must ensure that a bracket scaffold, double-pole scaffold, needle-beam scaffold, outrigger scaffold, single-pole scaffold, suspended scaffold or swingstage scaffold erected but not immediately put into service, or not used for more than 21 consecutive calendar days, has a red tag at each point of entry until it is inspected and tagged by a competent worker for use. - 326 (3) An employer must ensure that a bracket scaffold, double-pole scaffold, needle-beam scaffold, outrigger scaffold, single-pole scaffold, suspended scaffold or swingstage scaffold is inspected and tagged by a competent worker before it is used for the first time and at intervals of not more than 21 calendar days while workers work from the scaffold or materials are stored on it. 326 (4) A tag attached to a scaffold under this section expires 21 calendar days after the date of the inspection it records. - 326 (5) A tag required by this s…

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L ## GENERAL REQUIREMENTS - (7) Scaffolds shall be erected, moved, dismantled, or altered only under the supervision and direction of a competent person qualified in scaffold erection, moving, dismantling or alteration. Such activities shall be performed only by experienced and trained employees selected for such work by the competent person. - (8) Employees shall be prohibited from working on scaffolds covered with snow, ice, or other slippery material except as necessary for removal of such materials. - (9) Where swinging loads are being hoisted onto or near scaffolds such that the loads might contact the scaffold, tag lines or equivalent measures to control the loads shall be used. - (10) Suspension ropes supporting adjustable suspension scaffolds shall be of a diameter large enough to provide sufficient surface area for the functioning of brake and hoist mechanisms. - (11) Suspension ropes shall be shielded from heat-producing processes. When acids or other corrosive substances are used on a scaffold, the ropes shall be shielded, treated to protect against the corrosive substances, or shall be of a material that will not be damaged by the substance being used. - (12) Work on or from scaffolds is prohibited during storms or high winds unless a competent person has determined that it is safe for employees to be on the scaffold and those employees are protected by a personal fall arrest system or wind screens. Wind screens shall not be used unless the scaffold is secured against the anticipated wind forces imposed. - (13) Debris shall not be allowed to accumulate on platforms. - (14) Makeshift devices, such as but not limited to boxes and barrels, shall not be used on top of scaffold platforms to increase the working level height of employees. - (15) Ladders shall not be used on scaffolds to increase the working level height of employees, except on large area scaffolds where employers have satisfied the following criteria: - (i) When the ladder is placed agai…

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## 29 CFR 1926 (OSHA) - (iii) Each hoist shall be covered with insulated protective covers; - (iv) In addition to a work lead attachment required by the welding process, a grounding conductor shall be connected from the scaffold to the structure. The size of this conductor shall be at least the size of the welding process work lead, and this conductor shall not be in series with the welding process or the work piece; - (v) If the scaffold grounding lead is disconnected at any time, the welding machine shall be shut off; and - (vi) An active welding rod or uninsulated welding lead shall not be allowed to contact the scaffold or its suspension system. - (g) Fall protection. (1) Each employee on a scaffold more than 10 feet (3.1 m) above a lower level shall be protected from falling to that lower level. Paragraphs (g)(1) (i) through (vii) of this section establish the types of fall protection to be provided to the employees on each type of scaffold. Paragraph (g)(2) of this section addresses fall protection for scaffold erectors and dismantlers. NOTE TO PARAGRAPH (G)(1): The fall protection requirements for employees installing suspension scaffold support systems on floors, roofs, and other elevated surfaces are set forth in subpart M of this part. - (i) Each employee on a boatswains' chair, catenary scaffold, float scaffold, needle beam scaffold, or ladder jack scaffold shall be protected by a personal fall arrest system; - (ii) Each employee on a single-point or two-point adjustable suspension scaffold shall be protected by both a personal fall arrest system and guardrail system; - (iii) Each employee on a crawling board (chicken ladder) shall be protected by a personal fall arrest system, a guardrail system (with minimum 200 pound toprail capacity), or by a three-fourth inch (1.9 cm) diameter grabline or equivalent handhold securely fastened beside each crawling board; - (iv) Each employee on a self-contained adjustable scaffold shall be protected by a guardrail …

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (u) Needle beam scaffolds. - (v) Multilevel suspension scaffolds. - (w) Mobile scaffolds. - (x) Repair bracket scaffolds. - (y) Stilts. - (z) Tank builders' scaffolds. ## 1 . General guidelines and tables. - (a) The following tables, and the tables in Part 2-Specific guidelines and tables, assume that all load-carrying timber members (except planks) of the scaffold are a minimum of 1,500 lb-f/in(2) (stress grade) construction grade lumber. All dimensions are nominal sizes as provided in the American Softwood Lumber Standards, dated January 1970, except that, where rough sizes are noted, only rough or undressed lumber of the size specified will satisfy minimum requirements. - (b) Solid sawn wood used as scaffold planks must be selected for such use following the grading rules established by a recognized lumber grading association or by an independent lumber grading inspection agency. Such planks must be identified by the grade stamp of such association or agency. The association or agency and the grading rules under which the wood is graded must be certified by the Board of Review, American Lumber Standard Committee, as set forth in the American Softwood Lumber Standard of the U.S. Department of Commerce. - (i) Allowable spans must be determined in compliance with the National Design Specification for Wood Construction published by the National Forest Products Association; paragraph 5 of ANSI A10.8-1988 Scaffolding-Safety Requirements published by the American National Standards Institute; or for 2 x 10 inch (nominal) or 2 x 9 inch (rough) solid sawn wood planks, as shown in the following table: - (ii) The maximum permissible span for 1 1/4 x 9-inch or wider wood plank of full thickness with a maximum intended load of 50 lb/ft.( ) must be 4 feet. 2 - (c) …