Jenkins Academy of Applied Technology

CHR-001 — Learner reference

Construction Hazard Recognition · v1.0.0 · October 22, 2026

Course developed by Todd Jerome Jenkins, MS, CSP.

Recognize common construction hazards, select and verify controls, report changes and identify when specialized instruction is required.

This online knowledge course does not provide OSHA 10/30 Outreach credit, a competent-person designation or specialized task qualification. Employer instruction on actual site hazards, required inspections, verified controls and applicable task training remain separate.

1. Your role in construction safety

By the end: Identify your supervisor, reporting route and the person authorized to correct hazards.

Construction work changes as crews, equipment and materials move. Hazard recognition means noticing what could hurt someone, who could be exposed and how the harm could happen. A familiar task can become unsafe when the work area changes. A clean appearance or a good safety record does not prove that today's work is safe.

Under 1926.21(b)(2), the employer must instruct each employee in recognizing and avoiding unsafe conditions and in the regulations that apply to the work. The employer also has duties to maintain necessary programs and arrange frequent and regular inspections by designated competent persons under 1926.20(b). Workers need clear instructions, a way to ask questions and a way to report concerns.

A competent person can identify existing and predictable hazards and has authority to take prompt corrective measures. Being experienced or passing this course alone does not establish that role. Equipment operation and specialized work require the training, experience and other qualifications that apply to that assignment.

This course supports general knowledge. It is not OSHA 10/30 Outreach training, a Department of Labor card or a competent-person designation. Before work begins, the employer must connect instruction to the actual site, task and hazards. Ask who is responsible when you find a condition you cannot control safely.

Basis: 29 CFR 1926.20(b), 1926.21(b)(2), 1926.32

2. Break the job into steps

By the end: Use the pre-task worksheet for an actual assignment and identify unresolved information.

Review the work before tools are started. Break the task into steps: delivery, setup, work, changes, cleanup and departure. For each step, identify energy, substances, movement and conditions that could harm a worker or another person. Include workers on other crews and people passing the area.

Gather the instructions that apply. These can include drawings, equipment manuals, safety data sheets, surveys, exposure information and the employer's procedures. A safety data sheet describes a product's hazards; it does not establish the level of exposure during a particular task. Check that the information matches the actual material and equipment.

A job hazard analysis or pre-task review is a useful planning method. A generic completed form is not proof that conditions are safe, and this course does not claim one worksheet format is required for every construction task. Discuss the steps with workers who do the job. Their experience may reveal problems missed in a written plan.

Assign controls and responsible people before work starts. Resolve missing information through the supervisor or qualified source. If the plan depends on a barrier, isolation or inspection, verify it is in place. Update the review when the method, location, materials or nearby work changes.

Basis: 29 CFR 1926.20(b), 1926.21(b)(2); OSHA Recommended Practices for Safety and Health Programs in Construction

3. Scan the site and verify conditions

By the end: Conduct a safe walk-through with the employer and record who must evaluate each concern.

Look above, below, beside and beyond the immediate task. Scan access routes, edges, openings, overhead work, moving equipment, temporary services and stored materials. Think about where a load, tool, vehicle or person could move if a control failed. Include the route you will use to leave the area.

Use your senses without entering a hazardous location to investigate. Many hazards cannot be seen or smelled. Do not touch an unknown wire, open a guarded machine or enter a space just to check whether it is safe. Some conditions need testing or review by people with specific training and equipment.

Worker checks support the employer's inspection process. They do not replace the frequent and regular inspections by designated competent persons required under 1926.20(b)(2), or the inspection rules for particular operations. Different standards can require checks at a shift, after an event or under other conditions.

Report defects clearly: location, equipment or activity, people at risk and what you observed. Noncompliant equipment must not remain in use. Under 1926.20(b)(3), it must be identified as unsafe by tagging or locking controls to render it inoperable, or be physically removed. Follow the site process and do not repair or return equipment to service without authorization.

Basis: 29 CFR 1926.20(b)(2)-(3), 1926.32(f)

4. Choose and verify effective controls

By the end: Explain why each selected control addresses the hazard and how its function will be checked.

A control changes the conditions that allow harm. The NIOSH hierarchy ranks elimination, substitution, engineering controls, administrative controls and personal protective equipment. This is a planning framework. The OSHA rule for the particular work still determines required measures; the framework does not permit skipping a mandatory control.

First consider removing the hazard or changing the method. Prefabrication at ground level may reduce work at height. A safer material may reduce exposure, but evaluate its own hazards before substitution. Engineering controls, such as guards, barriers or capture ventilation, act on the hazard or separate people from it.

Administrative measures include work sequencing, restricted access and clear procedures. PPE protects the person when properly selected, fitted and used. These measures can be necessary, but they often depend on repeated human action. A sign or hard hat does not replace a required guardrail, isolation or protective system.

Verify that the selected controls work together in the actual setting. Check installation, capacity, condition and access. Assign someone to maintain them and define what changes require a new review. If a control is missing or fails, keep people from the hazard and follow the site's stop and escalation process.

Basis: 29 CFR 1926.20(b), 1926.21(b)(2); NIOSH Hierarchy of Controls

5. Recognize falls and unsafe access

By the end: Identify the specific access and fall-protection system for the task before entering the work area.

Falls can occur at edges, floor holes, roofs, ladders, scaffolds and lifts. They can also occur through a surface that cannot support the load. Before using a walking or working surface, the employer must determine that it has the necessary strength and structural integrity. Do not assume a cover, roof panel or platform is load-rated because someone used it earlier.

Protection depends on the activity and applicable standard. Many unprotected construction edges fall under the six-foot rule in 1926.501, but scaffolds, ladders and other work have their own provisions. Six feet is not a universal safe-height boundary. Hazards below that height can still require controls under applicable rules.

Recognize missing rails, unsecured covers, unsafe ladder access and altered platforms. Do not climb on buckets or rails to gain height. Do not remove protection or improvise a personal fall system. Anchor selection, equipment compatibility, clearance and rescue arrangements need the appropriate planning and training.

Stay outside an unprotected area and report it. Workers exposed to fall hazards need the training that applies to their work, including 1926.503 where applicable. Scaffold, ladder and lift instruction remains separate from this overview. Confirm how people will reach the task safely and how protection will remain in place as work progresses.

Basis: 29 CFR 1926.501, 1926.503; 1926 Subparts L and X

6. Keep clear of moving and falling objects

By the end: Trace a safe pedestrian route and identify vehicle, lifting and overhead-work exclusion zones.

Struck-by hazards involve moving vehicles, swinging loads, flying particles and falling materials. Look for delivery routes, backing equipment, blind spots, lifted loads and work above other crews. A worker can be outside a vehicle's path and still be within its swing area or a load's fall zone.

Plan separation before movement begins. Use the site's traffic routes, exclusion zones and communication arrangements. Operators may not be able to see a person close to the machine. Do not approach until the equipment is secured and the operator has acknowledged you through the agreed method. Eye contact alone does not remove stored movement or swing hazards.

Materials need stable storage and secure handling. Check stack stability, openings, edges and overhead work. Do not walk beneath suspended loads or enter a restricted lifting area. Crane signaling, rigging and operating duties have their own qualification requirements; seeing a lift from the ground does not qualify a worker to direct it.

Use required head, eye and visibility protection, but do not treat it as permission to enter a danger zone. Stop and report a blocked pedestrian route, missing barrier or conflicting delivery. Coordinate changes with affected crews before reopening access.

Basis: 29 CFR 1926.20(b), 1926.21(b)(2), 1926.250; applicable 1926 Subparts H, O and CC

7. Recognize collapse, pinch and stored-energy hazards

By the end: Identify pinch, collapse and energy hazards and the authorized person who can verify controls.

Caught-in or caught-between events can involve rotating parts, pinch points, moving equipment, collapsing material or soil. Stored energy can remain after a machine stops. Gravity, pressure, springs and electrical sources may move a part unexpectedly. Keep guards in place and do not reach into equipment to clear a jam.

Excavations can collapse without useful warning. Look for unsupported sides, water, nearby loads, vibration and changing soil conditions from a safe position. Never enter an excavation simply because it looks shallow or stable. Applicable protective-system, access, utility and inspection requirements must be addressed before entry.

A competent person must perform the excavation inspections required by 1926.651, including relevant changing conditions. Hazardous findings require exposed workers to be removed until necessary precautions are taken. Protective systems depend on the actual excavation and applicable exceptions; this overview does not train a worker to classify soil or design a system.

Keep people away from an unsafe trench, unstable stack or unguarded machine. Use authorized isolation and repair procedures. If someone is trapped, activate the emergency plan. Do not enter an unstable excavation or release stored energy in an improvised rescue; rescuers can become additional victims.

Basis: 29 CFR 1926.651, 1926.652; 1926.20(b), 1926.21(b)(2)

8. Identify electrical exposure before contact

By the end: Locate electrical hazards and confirm the responsible electrical or utility contact before work.

Electrical hazards include overhead and underground lines, damaged cords, open enclosures, wet conditions and temporary power. A line may look insulated or inactive and still be dangerous. Identify the location of electrical services before tasks such as digging, moving tall equipment or handling long materials.

Keep clear of exposed parts and follow the applicable clearance and protection plan. Do not use a single remembered distance for every voltage, machine and activity. Utility coordination, deenergizing, guarding or other measures require the responsible people and the rules for that work. General hazard training does not qualify a worker for electrical work.

Inspect accessible cords and equipment without opening enclosures or touching damaged parts. Report exposed conductors, missing components and unsuitable equipment. Temporary power requires the protection applicable to the task and setting. A protective device does not make a damaged cord acceptable or remove the need for safe equipment.

Do not attempt to confirm a circuit is dead by touch, appearance or a casual switch check. Isolation and testing belong to authorized, qualified personnel using the proper procedure. For suspected contact or an energized casualty, keep others away and activate the emergency plan; do not touch the person or equipment while an electrical hazard may remain.

Basis: 29 CFR 1926.416; 1926 Subpart K

9. Recognize dust, noise and chemical hazards

By the end: Identify the exposure assessment, control method and specialized training needed for the assigned material.

Not every hazard causes immediate pain. Dust, fumes, vapors and noise can harm health even when workers feel well. Cutting concrete can release respirable crystalline silica. Disturbing older coatings or building materials can involve lead or asbestos. Do not identify these materials by color, age alone or a quick visual check.

Review material information, surveys, safety data sheets and the employer's exposure evaluation before disturbance. Some tasks require sampling or other specific evaluation. Absence of visible dust or odor does not prove acceptable exposure. A general hazard course does not replace the detailed training required by silica, lead, asbestos or other applicable standards.

Controls may include changing the method, wet methods, local capture, restricted access and suitable housekeeping. The actual standard and task determine the measures. Do not sweep or blow hazardous dust simply because it is faster. Check the approved cleanup method and waste arrangements before generating contamination.

Respirators are not interchangeable dust accessories. Required use needs the applicable respiratory-protection program, selection, medical evaluation, fit testing where required and training. Noise also needs evaluation and appropriate controls and protection. Report uncontrolled dust, unusual symptoms or failed controls through the site process, and seek emergency help when conditions call for it.

Basis: 29 CFR 1926.21(b)(3), 1926.59, 1926.52, 1926.62, 1926.1101, 1926.1153, 1926.103

10. Recognize fire hazards and restricted spaces

By the end: Identify hot-work controls, fire reporting arrangements and spaces with restricted entry.

Construction fire risks change with fuel storage, temporary heating, electrical work and hot work. Identify flammable liquids, gases, combustible debris and ignition sources. The employer must maintain an effective fire-protection and prevention program through construction phases. Keep required access and firefighting equipment available.

Before welding, cutting or other hot work, use the applicable preparation, authorization and fire-watch arrangements. Check nearby and hidden combustible materials and affected spaces. A visible extinguisher alone does not make the work ready. Workers need instruction for safe handling and use of flammable or toxic materials that apply to their duties.

A space can have limited access, dangerous air, engulfment or other serious hazards. Construction confined-space requirements are in Subpart AA. Before work begins, the employer must have a competent person identify confined spaces and permit spaces where employees may work. A space is not safe to enter because its opening is large enough or someone entered earlier.

Do not enter a tank, pit, vault or similar suspect space to investigate, retrieve a tool or rescue someone without the required evaluation and arrangements. Entry roles, atmospheric testing, isolation, permits and rescue provisions require specific training and procedures. Report the condition and keep unauthorized people out while the responsible team evaluates it.

Basis: 29 CFR 1926.21(b)(5), 1926.150; 1926 Subparts F, J and AA

11. Check access, materials and environmental conditions

By the end: Walk the access and exit routes and review material-handling and environmental precautions.

Housekeeping is part of hazard control. Scrap, protruding nails, cords and stored materials can block travel or cause injury. Keep passages, stairs and exits clear. Provide suitable lighting for the work and access route. Do not move debris into another crew's path or hide an opening beneath waste.

Plan material movement before lifting or carrying. Consider weight, shape, reach, footing, repetition and available handling equipment. Use the employer's safe method and suitable assistance. There is no single lifting weight in this course that makes every manual lift safe. Do not trade a lifting hazard for a pinch or vehicle hazard when using equipment.

Heat, cold, wind, rain and lightning can change the work plan. Follow the site's weather monitoring, protective measures and emergency arrangements. Report symptoms or deteriorating conditions promptly rather than waiting for the next break. This overview does not establish a universal heat threshold or replace the employer's applicable heat requirements.

Construction work may also expose workers to harmful plants or animals. Where that exposure may occur, 1926.21(b)(4) requires instruction on the hazards, avoiding injury and first-aid procedures. Verify the site-specific precautions, sanitation, drinking-water arrangements and emergency contacts before working in a remote or unfamiliar area.

Basis: 29 CFR 1926.21(b)(4), 1926.25-.28, 1926.34, 1926.250; employer task and weather plans

12. Report concerns and coordinate changing work

By the end: Practice a clear hazard report and identify who verifies correction and authorizes restart.

A safe plan can become unsuitable when another crew starts work, a barrier moves or a method changes. Watch for new deliveries, shifted access, damaged controls, weather and simultaneous operations. Recheck the task when these changes affect who could be exposed or how a hazard is controlled.

Use the site's stop and reporting process when work presents an unresolved hazard. Move to a safe location without creating another risk. Describe what you observed, the exact location and the people or activities affected. Do not assume that telling a coworker means the responsible supervisor has received the report.

Different employers may share a work area. Coordinate affected activities, hazard information and control responsibilities through the site's designated contacts. A contractor's separate task plan does not automatically account for exposure created by another crew. Workers should know who can resolve conflicts and communicate changes.

Restart requires verification of the actual correction and any needed revised instruction. A signed form or verbal promise does not prove a barrier was restored or energy isolated. Record the correction, responsible person and remaining restrictions. This lesson teaches practical site escalation; it does not claim an unlimited legal right to refuse any assignment.

Basis: 29 CFR 1926.20(b), 1926.21(b)(2); OSHA construction safety-program guidance

13. Know how to get help without adding victims

By the end: Demonstrate how to contact help, state the location and reach the designated safe assembly point.

Before work starts, know how to report an emergency, give the site location and reach the assembly area. Learn the alarm signals, exit routes and accountability process. Remote work, changing site addresses and blocked access can delay help, so verify the instructions for the actual location.

The employer must arrange the medical attention and first-aid provisions that apply under 1926.50. Know where the supplies and designated trained people are located. This course does not provide first-aid or CPR certification. Do not assume that an online awareness lesson establishes hands-on emergency skills.

Leave danger by the safe route and follow the plan. Do not return for tools or enter a restricted area to look for missing people. Report the last known location to the responsible responders. Firefighting, electrical contact, hazardous releases, falls and confined-space rescues may require specialized resources and training.

Help within your training and the actual emergency plan. Do not enter hazardous air, an unstable excavation or an energized area to attempt an improvised rescue. Communicate changes and keep access clear for responders. After the immediate response, affected work needs review before restart; the end of an alarm does not itself prove the hazard is controlled.

Basis: 29 CFR 1926.23, 1926.34, 1926.50, 1926.150; applicable emergency and rescue provisions

14. Apply the review and identify training gaps

By the end: Complete the employer verification record with observed understanding and unresolved training needs.

Apply the complete method to a real assignment with the employer. Describe the steps, identify who could be harmed, select the applicable controls and verify that they are ready. Include access, nearby work, hidden exposures and emergency arrangements. A walk-through should take place from safe locations without exposing a trainee to an uncontrolled hazard.

Use teach-back: explain the hazard in your own words, show the safe route and describe what would make you stop and report. The employer or trainer should correct misunderstandings and verify the response again. Instruction must be understandable to the workers receiving it; a recorded score alone does not prove that site instructions were understood.

Identify the training still needed for the actual assignment. Fall protection, scaffolds, ladders, electrical work, confined-space entry, equipment operation and hazardous materials can have additional requirements. This course does not grant those qualifications. Do not assign specialized work on the strength of this completion record alone.

Record actual instruction, observations, corrections and remaining restrictions. Review training needs when work or hazards change or understanding is inadequate. This overview sets no universal annual refresher period for all construction hazard recognition; follow the applicable standards and employer program. The course score and the employer's workplace verification are separate evidence.

Basis: 29 CFR 1926.20(b), 1926.21(b)(2); applicable task-specific training standards

Sources

Federal OSHA sources reviewed October 22, 2026. Confirm the actual work, jurisdiction and applicable additional requirements. Agency guidance supports planning; it is distinguished from mandatory standard text.