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roof blocking

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Pre-Task Plan: Roof Blocking

Date: [DATE] Work Area: [WORK AREA] Task Supervisor: [SUPERVISOR NAME]

1. Task Description

Installation of roof blocking to provide support and prevent collapse during roofing work [1].

2. Task Duration

Estimated Start: [START TIME] Estimated Completion: [END TIME]

3. Personnel Involved

  • [ROLE 1]
  • [ROLE 2]
  • [ROLE 3]

4. Task-Specific Hazards and Controls

HazardRiskControl Measures
Fall from heightSerious injury or deathUse fall protection systems such as guardrails, safety nets, or personal fall arrest systems when working 6 feet (1.8 m) or more above lower levels [2]. Ensure proper use of body belts or harnesses, lanyards, and anchorage points [2].
Falling objectsInjury to workers belowUse toeboards to prevent tools and materials from falling [2]. Secure all tools and materials to prevent them from falling. Establish a drop zone and restrict access to the area below.
Structural instabilityCollapse of the roof structureEnsure that any component designed to support a part of the project is completed before adding to the load on that part [1]. Brace free-standing walls or structures adequately to prevent collapse [1]. Consult with an engineer for bracing or shoring design if necessary [1].
Improper scaffold useFalls, scaffold collapseEnsure scaffolds are erected and used according to regulations. Use ladder jack scaffolds below 20 feet [3]. Inspect scaffold components before use [4].

5. Required PPE for Today's Task

  • Hard hat
  • Safety glasses
  • Fall protection harness
  • Non-slip work boots

6. Tools and Equipment Needed

  • Hammer/Nail gun
  • Measuring tape
  • Saw
  • Personal Fall Arrest System (PFAS)

7. Pre-Start Checklist

Area Preparation

  • [ ] Ensure the work area is clear of obstructions.
  • [ ] Establish a clear drop zone and barricade if necessary.
  • [ ] Verify that walking/working surfaces have the strength and structural integrity to support workers safely [2].

Equipment Checks

  • [ ] Inspect all fall protection equipment for damage before use.
  • [ ] Check that all tools are in good working condition.
  • [ ] Ensure ladders are secured to prevent slipping [3].

Communication

  • [ ] Review task-specific hazards and controls with all workers.
  • [ ] Establish hand signals or other communication methods.

8. Task Steps Overview

  1. Inspect the roof structure for any signs of weakness or damage.
  2. Measure and cut the blocking material to the required dimensions.
  3. Position the blocking between rafters or trusses.
  4. Secure the blocking with appropriate fasteners (nails, screws).
  5. Inspect the installed blocking to ensure it is properly installed and provides adequate support.

9. Emergency Response for This Task

  • Fall from height → Activate emergency response system, provide first aid, ensure medical attention.
  • Structural collapse → Evacuate the area immediately, account for all personnel, notify supervisor.

10. Task-Specific Precautions

  • Avoid working in adverse weather conditions (high winds, rain).
  • Maintain three points of contact when climbing ladders.
  • Do not exceed the load capacity of the roof structure or scaffolding.

Pre-Task Briefing Confirmation

All workers understand the task, associated hazards, and required controls.

Team Lead Initials: [___] Date: [DATE] Time: [TIME]

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4 source record(s)

Sources used for this answer

[1] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

Page 377

Open source document

Source excerpt

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - *Tubular Welded Frame Scaffolds - *specific regulations and standards - *components - *parts inspection - *erection/dismantling planning - *guys, ties and braces - *fall protection - *general safety - *access and platforms - *erection/dismantling procedures - *rolling scaffold assembly - *putlogs - *Tube and Clamp Scaffolds - *specific regulations and standards - *components - *parts inspection - *erection/dismantling planning - *guys, ties and braces - *fall protection - *general safety - *access and platforms - *erection/dismantling procedures - *buttresses, cantilevers, & bridges - *System Scaffolds - *specific regulations and standards - *components - *parts inspection - *erection/dismantling planning - *guys, ties and braces - *fall protection - *general safety - *access and platforms - *erection/dismantling procedures - *buttresses, cantilevers, & bridges

[2] Occupational Safety General Regulations (N.S. Reg. 44/99)

Page 86

Open source document

Source excerpt

## Bracing and supports - 154 (1) An employer at a project shall ensure that - (a) work is completed on any component designed to support or give added support to a part of the project before proceeding with any work that adds to the load on that part; - (b) a free standing wall of brick, concrete blocks or similar materials greater than 2 m in height is braced from both sides until the wall is attached to a rigid structure and the mortar has set adequately; - (c) a free standing wall or structure designed to support roof components or any load is braced in an adequate manner to prevent collapse of the wall or structure; and - (d) a column is erected in an adequate manner to prevent collapse of the column and, where further support is required to ensure that the column does not collapse, braced in an adequate manner. - (2) An employer at a project shall use bracing or shoring for support beneath floor levels where concrete is being poured. - (3 ) An employer at a project shall - (a) ensure that bracing or shoring is designed by an engineer and is erected, maintained and dismantled in accordance with the engineer's certified specifications; or - (b) retain the bracing or shoring at all floor levels beneath the floor where concrete is being poured until the removal of the bracing or shoring is authorized in writing by an engineer. - (4) An employer shall ensure that any bracing or shoring referred to in this Section complies with the latest version of CSA standard CSA S.269.1, 'Falsework for Construction Purposes.' Subsection 154(4) amended: O.I.C. 2013-65, N.S. Reg. 53/2013. - (5) An employer shall ensure that footings for shoring and bracing are designed to support the maximum load likely to be imposed, without excessive settlement or deformation. ## By-stander safety \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

[3] Safety and Health Regulations for Construction (OSHA)

Page 85

Open source document

Source excerpt

## 29 CFR 1926 (OSHA) Toeboard means a low protective barrier that will prevent the fall of materials and equipment to lower levels and provide protection from falls for personnel. Unprotected sides and edges means any side or edge (except at entrances to points of access) of a walking/working surface, e.g., floor, roof, ramp, or runway where there is no wall or guardrail system at least 39 inches (1.0 m) high. Walking/working surface means any surface, whether horizontal or vertical on which an employee walks or works, including, but not limited to, floors, roofs, ramps, bridges, runways, formwork and concrete reinforcing steel but not including ladders, vehicles, or trailers, on which employees must be located in order to perform their job duties. Warning line system means a barrier erected on a roof to warn employees that they are approaching an unprotected roof side or edge, and which designates an area in which roofing work may take place without the use of guardrail, body belt, or safety net systems to protect employees in the area. Work area means that portion of a walking/working surface where job duties are being performed. [59 FR [redacted postal code], Aug. 9, 1994, as amended at 60 FR [redacted postal code], Aug. 2, 1995; 66 FR 5265, Jan. 18, 2001; 75 FR [redacted postal code], Aug. 9, 2010; 79 FR [redacted postal code], Apr. 11, 2014] ## §1926.501 Duty to have fall protection. - (a) General. (1) This section sets forth requirements for employers to provide fall protection systems. All fall protection required by this section shall conform to the criteria set forth in §1926.502 of this subpart. - (2) The employer shall determine if the walking/working surfaces on which its employees are to work have the strength and structural integrity to support employees safely. Employees shall be allowed to work on those surfaces only when the surfaces have the requisite strength and structural integrity. - (b)(1) Unprotected sides and edges. Each employee

[4] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

Page 545

Open source document

Source excerpt

<!-- image --> L ## ADDITIONAL REQUIREMENTS APPLICABLE TO SPECIFIC TYPES OF SCAFFOLDS Oregon Administrative Rules Oregon Occupational Safety and Health Division - (6) When wood poles are constructed of two continuous lengths, they shall be joined together with the seam parallel to the bracket. - (7) When two by fours are spliced to make a pole, mending plates shall be installed at all splices to develop the full strength of the member. ## (k) Ladder jack scaffolds. - (1) Platforms shall not exceed a height of 20 feet (6.1 m). - (2) All ladders used to support ladder jack scaffolds shall meet the requirements of subpart X of this part - Stairways and Ladders, except that job-made ladders shall not be used to support ladder jack scaffolds. - (3) The ladder jack shall be so designed and constructed that it will bear on the side rails and ladder rungs or on the ladder rungs alone. If bearing on rungs only, the bearing area shall include a length of at least 10 inches (25.4 cm) on each rung. - (4) Ladders used to support ladder jacks shall be placed, fastened, or equipped with devices to prevent slipping. - (5) Scaffold platforms shall not be bridged one to another. ## (l) Window jack scaffolds. - (1) Scaffolds shall be securely attached to the window opening. - (2) Scaffolds shall be used only for the purpose of working at the window opening through which the jack is placed. - (3) Window jacks shall not be used to support planks placed between one window jack and another, or for other elements of scaffolding. ## (m) Crawling boards (chicken ladders). - (1) Crawling boards shall extend from the roof peak to the eaves when used in connection with roof construction, repair, or maintenance. - (2) Crawling boards shall be secured to the roof by ridge hooks or by means that meet equivalent criteria (e.g., strength and durability). ## (n) Step, platform, and trestle ladder scaffolds. - (1) Scaffold platforms shall not be placed any higher than the second high

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