4.06 – Ladders & Scaffolds
Griffin Properties Ltd. will take all reasonable precautions/measures to ensure all ladders and scaffolds onsite are erected, maintained, used, and dismantled in accordance with the manufacturer’s instructions and OHS Regulation Part 13.
- All Manufactured portable ladders will be marked for the grade of material used to construct the ladder and the use for which the ladder is constructed.
- All job-built ladders will be constructed in accordance with WeB Standard LOR 1.
- Ladders will be positioned as follows:
- a) on a firm and level base
- b) so that the horizontal distance from the base to vertical plane of support is approximately % of the ladder length
- c) to project approximately 3 feet above the upper landing to which it provides access if applicable
- Ladders will be used as follows:
- a) in accordance with manufacturers instruction
- b) for jobs of short duration or temporary nature only
- c) workers will not carry up or down a ladder, heavy or bulky objects or any other objects which may make ascent or descent unsafe
- d) three-point contact will be maintained by user/worker
- e) user/worker will stay positioned in the center of the ladder at all times
- In addition to (4) step ladders will only be used when they are fully open and the spreaders are locked; workers are not permitted to stand on the top two steps under any circumstances.
- All ladders onsite will be inspected in accordance with established company policy/procedure. (Inspections)
- All scaffolding will be used in accordance with manufacturer’s instruction; any scaffold designed by a professional engineer will have all technical data and specifications available onsite at all times.
- If any of the following conditions are present, scaffolding will be designed by a professional engineer with respect to:
- a) bracing, if the scaffold is enclosed by a tarpaulin or any other cover
- b) a scaffold exceeding 125′ in height
- c) a scaffold exceeding 80′ in height if stairways are included as part of the scaffold
- d) a scaffold used to support a temporary floor
- e) a scaffold suspended or cantilevered from a structure
- f) a scaffold system supported by a catenary line
- g) a needle beam scaffold
- h) an outrigger scaffold
- All scaffolding onsite will be erected as follows:
- a) with the vertical members plumb, and with the ledgers and bearers level
- b) the base will have bearing plates or sills that rest on a solid surface and are sufficient to support the weight of the scaffold
- c) poles, legs and uprights will be securely and rigidly braced to prevent movement
- d) effectively guyed or secured to a building or structure if the height exceeds 3 times its minimum base dimension, or in any other circumstances if required for stability
- e) unless otherwise specified by the manufacturer, height adjustment devices will not extend more than 2/3 of their total length or 24″, whichever is less
- f) all connections between the parts will be secure
- g) metal scaffolds will be effectively grounded if located close to a high voltage energized electrical conductor or equipment, and a hazardous level of electrical charge is likely to be induced in the scaffold
- Scaffolds erected above 10′ will have guardrails installed at all times in accordance with established company policy/procedures (Fall Protection), unless:
- a) the platform is adjacent to a structure that provides protection equivalent to guardrails
- b) the open space between the platform and the structure is equal to or less than 12″
- Scaffold decking will meet the following requirements:
- a) minimum width of 20″, except when used with ladder jacks, pump jacks or similar systems a 12″ wide work platform may be used
- b) not have more than one opening in the work platform, which will be no greater than 10″ wide
- c) designed to ensure adequate footing for workers using the platform if the platform is not level
- All lumber used to construct a scaffold will be graded and marked to the National Lumber Grades Authority Standard Grading Rules for Canadian Lumber.
- All scaffolds onsite will be inspected in accordance with established company policy/procedure. (Inspections)
- A rolling scaffold with a worker on it will not be transported along the ground unless:
- a) the scaffold that has a height of less than 1% times the minimum base dimension is moved by a worker on the platform, or
- b) the scaffold that has a height of less than 2 times the minimum base dimension is moved by a worker on the ground
- All employees will receive documented onsite training of the following:
- a) policy, procedure, instruction and site specifics