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Carpentry · United States

JHA for roof truss installation

By Safety PaperworkBuilt from OSHA standards and guidance · How we write and check theseUpdated

OSHA expects employers to find and control hazards on every job, and many general contractors require a written JHA for roof truss installation before you start.

A JHA breaks the job into steps, lists the hazards in each step and the controls that protect the crew, and the crew signs it. The main hazards are falling from a roof edge, falling from height, scaffold collapse or fall from scaffold and falling through a floor opening or void.

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JHA example: roof truss installation

This is a complete JHA for roof truss installation, with 6 job steps. Open it in the builder to add your site, crew and signatures, change anything, and download a PDF. Or download the free Word template below and fill it in by hand.

Job Hazard Analysis (JHA)
Roof truss installation · Carpentry · Example
Document JHA-001 · Rev 1

Job steps, hazards and controls

#Job stepHazardsRisk beforeControlsRisk after
1Erect perimeter scaffold or edge protection at roof height before trusses go up
  • Falling from a roof edge
  • Scaffold collapse or fall from scaffold
Critical
  • Do what you can from the ground or from a scaffold at the gutter line, for example pre-assemble parts on the ground. Elimination
  • Install edge protection or guardrails on all open roof edges before work starts. Engineering (guarding)
  • Use a perimeter scaffold with handrails and toe boards along the eaves where practical. Engineering
  • Where guardrails cannot be fitted, use fall restraint on certified roof anchors so workers cannot reach the edge. Engineering
  • Low-slope roofs: guardrails, safety nets, personal fall arrest, or a warning line combined with one of these or with a safety monitor (a safety monitor alone only on roofs 50 feet wide or less). Steep roofs: guardrails with toe boards, safety nets or personal fall arrest (29 CFR 1926.501(b)(10), (11)). Administrative
  • Use one safe, controlled access point and keep others off the roof. Administrative
  • Stop roof work in strong wind or rain, and when the roof is wet, icy or covered in dust or frost. Administrative
  • Wear a harness clipped to a rated anchor when using restraint or fall arrest, and soft-soled non-slip boots. PPE
  • Scaffold is built, moved and taken down under the supervision of a competent person. Engineering
  • Fit guardrails, mid rails and toe boards on every platform more than 10 feet above a lower level, or use personal fall arrest (29 CFR 1926.451(g)(1)). Engineering
  • Use mobile scaffolds only on firm, level ground with casters locked, and guy, tie, brace or fit outriggers once the height is more than 4 times the base width (29 CFR 1926.451(c)(1)). Never move one with anyone on it. Engineering
  • Every worker on the scaffold is trained by a qualified person (29 CFR 1926.454). Administrative
  • A competent person inspects the scaffold before each shift and after anything that could affect it (29 CFR 1926.451(f)(3)). Administrative
  • Do not overload platforms. Know the rated load (light, medium or heavy duty) and stack materials over the legs, not mid-span (29 CFR 1926.451(f)(1)). Administrative
  • Never remove ties, braces, guardrails or planks. Only the erection crew alters the scaffold, under the direction of the competent person (29 CFR 1926.451(f)(7)). Administrative
  • Wear a hard hat and safety boots on and around the scaffold. PPE
Medium
2Lift trusses by crane with a qualified rigger and signal person, keeping everyone clear of the load
  • Crane and lifting failure
  • Falling tools and materials
  • Contact with overhead power lines
High
  • Barricade the lift zone and keep everyone out from under the load. Engineering (guarding)
  • Use a crane rated for the load at the radius, set up on firm ground with outrigger pads. Engineering
  • Check slings, chains, shackles and hooks before use. Remove anything damaged or not tagged. Engineering
  • Plan the lift: weight, radius, ground, path and landing area. Use a written lift plan for complex lifts. Administrative
  • Use a certified crane operator who has also been evaluated by the employer, with the evaluation documented on site (29 CFR 1926.1427), plus a qualified rigger (1926.1425) and a qualified signal person (1926.1428). Administrative
  • Barricade and sign the drop zone under overhead work so nobody walks beneath. Engineering (guarding)
  • Fit toe boards, kick plates and mesh screens on scaffolds and edges. Engineering
  • Use catch fans, debris netting or covered walkways where people pass below. Engineering
  • Tether hand tools when working at height. Engineering
  • Keep platforms tidy. Do not stack materials near edges or above toe board height. Administrative
  • Ask the utility to de-energize, move or insulate the lines before work starts. Elimination
  • Use non-conductive (fiberglass) ladders near any power lines. Substitution
  • Mark the safe distance with flags, tape or warning lines and keep all equipment and people outside it. Engineering (guarding)
  • Keep equipment at least 10 feet from lines up to 50 kV once the utility confirms the voltage, more for higher voltages, and 20 feet when the voltage is unknown (29 CFR 1926.1408). Administrative
  • Use a dedicated spotter whenever equipment moves or raises anything near lines. Administrative
  • Treat all lines as energized. If equipment touches a line, the operator stays in the cab and everyone else keeps well away. Administrative
Medium
3Fix trusses from a stable platform, not by walking the top plates
  • Falling from height
  • Falling through a floor opening or void
Critical
  • Do the work from the ground where you can, for example pre-assemble on the ground or use extension poles. Elimination
  • Install guardrails or edge protection on all open edges before work starts. Engineering (guarding)
  • Use a scaffold, mobile work platform or aerial lift instead of working off a ladder. Engineering
  • Where edge protection is not practical, use a fall restraint or fall arrest system on a rated anchor point. Engineering
  • Provide fall protection at 6 feet or more and train workers to recognize fall hazards (29 CFR 1926.503). Administrative
  • Have a rescue plan so a worker hanging in a harness can be brought down within minutes. Administrative
  • Wear a full body harness with a shock-absorbing lanyard, clipped on at all times when using fall arrest. PPE
  • Cover every hole with a secured cover marked "HOLE" or "COVER" that can hold twice the weight it may carry. Engineering (guarding)
  • Put guardrails with toe boards around stairwells, elevator shafts, floor holes and open edges. Engineering (guarding)
  • Install stairs early and fit temporary handrails as soon as they go in. Engineering
  • Never remove a cover or guardrail without approval. Put it back straight away. Administrative
  • Inspect covers and barriers daily and after other trades have been through. Administrative
  • Keep lighting good enough to see openings, especially on lower floors and in the evening. Administrative
  • Use a harness clipped to a rated anchor when working right next to an open void. PPE
Medium
4Install temporary bracing as each truss goes in
  • Structural collapse during alterations
  • Strong wind and storms
High
  • Get an engineer to check before removing any wall, beam, post or bracing that may be load-bearing. Elimination
  • Keep everyone clear of the area under and next to the work. Engineering (guarding)
  • Install temporary props, needles or shoring as designed before removing any support. Engineering
  • Follow the engineer's sequence. Do not change it without approval. Administrative
  • Check props daily. Do not remove them until the permanent support is in and approved. Administrative
  • Wear a hard hat and safety boots. PPE
  • Check the forecast each morning and plan work at height and lifting around the weather. Elimination
  • Tie down or weigh down loose sheets, panels, boards and rubbish at the end of each shift. Engineering
  • Set wind limits for roof work, platforms and cranes, using the manufacturer's limits, and stop when they are reached. Administrative
  • Stop work and get down in lightning. Wait 30 minutes after the last thunder before going back up. Administrative
  • Check scaffold, fencing and edge protection after strong wind before anyone uses them. Administrative
  • Do not carry large sheets on roofs in wind. Administrative
  • Wear a hard hat with a chin strap at height in windy conditions. PPE
Medium
5Fix tie-downs and permanent bracing with nail guns
  • Nail gun injuries
  • Loud noise
  • Eye injuries
High
  • Use a nail gun with a sequential (single shot) trigger, not a contact or bump trigger. Substitution
  • Disconnect the air or battery before clearing jams, adjusting or moving between work areas. Engineering
  • Keep your free hand at least 12 inches from the nailing point. Administrative
  • Never point the gun at anyone or carry it with your finger on the trigger. Administrative
  • Train new users before they use a nail gun, and check for pipes, cables and metal behind the surface. Administrative
  • Use quieter tools and methods, such as cut-to-size materials, low-noise machines and battery tools. Substitution
  • Keep noisy plant away from work areas, and use screens or distance between the noise and people. Engineering (guarding)
  • Keep tools maintained and use mufflers on compressors and generators. Engineering
  • Limit time on noisy tools and rotate workers. Administrative
  • If you have to shout to be heard at arm's length, wear hearing protection. Administrative
  • Use tool guards and screens to stop flying particles. Engineering
  • Use dust extraction and water to keep dust out of the air. Engineering
  • Keep others out of the area when cutting, grinding or chipping. Administrative
  • Keep an eye wash station or eye wash bottles on site. Administrative
  • Wear safety glasses at all times, goggles for dust and chemicals, and a face shield for grinding. PPE
Medium
6Clear offcuts and check bracing before handing over to the roofer
  • Poor housekeeping and waste
  • Falling tools and materials
High
  • Order materials to size and send packaging back where you can. Elimination
  • Put dumpsters and waste chutes close to the work. Engineering
  • Clean as you go, and do a full clean up at the end of each day. Administrative
  • Keep exits, stairs and walkways clear at all times. Administrative
  • Stack materials neatly on level ground, away from edges. Administrative
  • Wear gloves when handling waste. PPE
  • Lower materials with a hoist, chute or rope. Never throw or drop anything down. Administrative
  • Wear a hard hat anywhere objects could fall. PPE
  • Falling tools and materials: see step 2 for the full controls Administrative
Medium

PPE

Safety-toe boots (ASTM F2413)Personal fall arrest system (harness)Hard hat (ANSI Z89.1)Safety glasses (ANSI Z87.1)Hearing protection (earmuffs or plugs)Work glovesHigh-visibility safety apparel, ANSI/ISEA 107 Class 2 or 3 (Type R near roadways)Sun protection (sunscreen, hat, long sleeves)Safety goggles (ANSI Z87.1)Face shield (ANSI Z87.1)

Plant and equipment

Mobile crane: Operator certified by an accredited body or audited employer program (29 CFR 1926.1427) and evaluated by the employer, with a signed evaluation on site (1926.1427(f)); qualified rigger (1926.1425) and qualified signal person (1926.1428)Supported scaffold: Erected under a competent person (29 CFR 1926.451)Nail gun (pneumatic nailer)Platform ladderHand tools

Permits and plans

Written fall protection plan (only where guardrails, nets or personal fall arrest are not feasible, 1926.502(k))Critical lift plan

Emergency

Call 911. Add the nearest hospital, the assembly point and the first aid / cpr person for your site.

Sign-off

Supervisor and every worker sign to confirm they have read and understood this JHA.

Free JHA template for roof truss installation

Word (.docx) and PDF, Letter landscape, no email needed. Fill in your site details, then print or send it.

Word template (.docx)PDF template

Make yours in 2 minutes

Same document, filled in for your job. Answer a few yes or no questions, the crew signs on the phone, and you send the PDF.

Start this JHA

Pre-start checklist for roof truss installation

Tick these off before work starts. They come from the hazards, permits and equipment in this job.

The safe sequence of work

  1. Erect perimeter scaffold or edge protection at roof height before trusses go up
  2. Lift trusses by crane with a qualified rigger and signal person, keeping everyone clear of the load
  3. Fix trusses from a stable platform, not by walking the top plates
  4. Install temporary bracing as each truss goes in
  5. Fix tie-downs and permanent bracing with nail guns
  6. Clear offcuts and check bracing before handing over to the roofer

Hazards to watch on roof truss installation

The hazards most specific to this job, and the step where each one comes up.

Step 5Nail gun injuriesA nail gun fires by accident, or a nail goes through the lumber or ricochets and hits the user or someone nearby.
Step 2Crane and lifting failureA load falls or swings, or the crane tips, crushing workers under or near the lift.
Step 1Scaffold collapse or fall from scaffoldA scaffold that is badly built, overloaded or altered collapses or tips, or a worker falls from an unguarded platform.
Step 2Contact with overhead power linesA ladder, aerial lift, crane, dump truck or long length of material touches or gets close to an overhead line and electrocutes people.
Step 4Strong wind and stormsWind blows sheets, panels and people off roofs and scaffolds, and storms and lightning make work at height and lifting unsafe.
Step 1Falling from a roof edgeA worker slips or walks off the edge of a roof or gutter line and falls to the ground.
Almost certainLikelyPossibleUnlikelyRareHow bad it could be: First aid only to FatalityBA
Highest risk on roof truss installation: Critical before controls (B), down to Medium after controls (A), on the United States 5 by 5 risk matrix (likely and fatality becomes unlikely and serious injury).

What changes on your site

This example covers the job itself. Your site may add more. Add controls for any of these that apply (the builder asks you these as yes or no questions):

  • Will anyone use a ladder or stepladder?
  • Will anyone work on a roof?
  • Is there a skylight, fiberglass panel or other fragile roofing?
  • Will you use an aerial lift (scissor lift or boom lift)?
  • Was the building built before 1981?

Licences and legal requirements in United States

Equipment on this job that needs a licence, ticket or training:

  • Mobile crane: Operator certified by an accredited body or audited employer program (29 CFR 1926.1427) and evaluated by the employer, with a signed evaluation on site (1926.1427(f)); qualified rigger (1926.1425) and qualified signal person (1926.1428)
  • Supported scaffold: Erected under a competent person (29 CFR 1926.451)

OSHA requires employers to find and fix hazards and to train workers on them. A JHA breaks the job into steps, lists the hazards in each step and the controls that protect the crew. General contractors often require one before you start.

Rules that apply: 29 CFR 1926 Subpart M; 29 CFR 1926 Subpart L; 29 CFR 1926 Subpart CC; 29 CFR 1926.501(c); 29 CFR 1926.1408 and 1926.416; 29 CFR 1926.52.

Why JHAs get rejected

General contractors send documents back for these reasons. This example avoids them, but check yours too.

  • Generic steps such as "work safely" or "use PPE" with no task-specific hazards or controls.
  • No OSHA standards referenced for the hazards that have them, such as fall protection, ladders, scaffolds or silica.
  • No competent person named for fall protection, excavation, scaffolds or silica where those hazards exist.
  • Equipment listed without inspection requirements, and no training listed for the people using it.
  • Respirators listed with no respiratory protection program, medical clearance or fit test.
  • Controls rely only on PPE when engineering controls such as guardrails, wet cutting or extraction are feasible.
  • No crew sign-off, or no date and revision when the job has changed.

Questions

Do I need a JHA for roof truss installation?

OSHA expects employers to find and control hazards on every job, and many general contractors require a written JHA for roof truss installation before you start.

Who signs the JHA?

The supervisor or competent person who prepared it signs, and every crew member signs to show they were trained on the hazards and controls before the job starts. Many general contractors also sign to accept it.

How long do I keep it?

Keep this JHA on site during the job, and keep it with the training and inspection records for at least 1 year after the job (longer if your state plan or general contractor requires it). OSHA does not set a retention period for JHAs themselves.

What PPE is needed for roof truss installation?

Usually Safety-toe boots (ASTM F2413), Personal fall arrest system (harness), Hard hat (ANSI Z89.1), Safety glasses (ANSI Z87.1), Hearing protection (earmuffs or plugs), Work gloves, High-visibility safety apparel, ANSI/ISEA 107 Class 2 or 3 (Type R near roadways), Sun protection (sunscreen, hat, long sleeves), Safety goggles (ANSI Z87.1), Face shield (ANSI Z87.1). The site rules may add more, so check with the general contractor.

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Blank JHA template: free JHA templates. Also for other countries: Australia (SWMS) · United Kingdom (RAMS) · Canada (FLHA)

Sources