A Demolition Contractor Safety Manual provides the written safety policies, programs, responsibilities, and procedures needed to address the hazards associated with structural demolition, selective demolition, interior demolition, dismantling, material removal, and related construction activities.
Demolition work presents many of the hazards found throughout the construction industry while also creating unique risks associated with weakened structures, unknown building conditions, hidden utilities, falling materials, hazardous substances, heavy equipment, changing access routes, and the possibility of unplanned structural collapse.
An effective Demolition Safety Manual should therefore include the company’s fundamental construction safety requirements along with the additional safety programs and procedures applicable to the demolition operations its employees perform.
The contents of a Demolition Contractor Safety Manual should reflect the types of demolition work the company actually performs.
A contractor performing interior selective demolition may encounter different hazards than a company mechanically demolishing an entire structure. Contractors dismantling industrial facilities may encounter process equipment, hazardous energy, chemicals, confined spaces, and complex structural conditions not normally encountered during residential demolition.
The manual should begin with the company’s Core Construction Safety Programs and then incorporate additional programs based on the structures, equipment, materials, work methods, and hazards involved in the company’s demolition operations.
A comprehensive Demolition Contractor Safety Manual may include core programs addressing:
The manual should also establish responsibilities for management, supervisors, employees, competent and qualified persons, hazard identification, workplace inspections, safety training, hazard correction, incident reporting, recordkeeping, and periodic review of the company’s safety programs.
Before demolition operations begin, an engineering survey must be performed by a competent person to evaluate the condition of the structure.
The survey should determine the condition of framing, floors, walls, and other structural components and evaluate the possibility of unplanned collapse. Adjacent structures where employees could be exposed should also be evaluated.
The employer must maintain written evidence that the required engineering survey has been performed.
Information obtained during the survey should be considered when planning the demolition sequence, selecting equipment, establishing restricted areas, determining structural-support requirements, and developing safe work procedures.
Demolition should be planned before employees begin removing structural components or materials.
Planning should consider:
Demolition planning should be reviewed when conditions differ from those anticipated or when the sequence or method of demolition changes.
Structural conditions can change continuously as demolition progresses.
Walls, floors, framing, supports, and other components that were stable at the beginning of the project may become unstable after adjoining materials or structural members are removed.
Employees should not work in areas where weakened or deteriorated structural components create a hazard until appropriate corrective measures have been taken.
Where necessary, shoring, bracing, temporary supports, restricted-access areas, or other controls should be established.
Structural components should not be removed in a sequence that creates uncontrolled instability or places employees in the potential collapse zone.
Demolition safety does not end with the initial engineering survey.
Conditions should be evaluated as demolition progresses because removal of walls, floors, framing, equipment, or other components can create new hazards.
A competent person should perform inspections required for the demolition operation and identify hazards associated with weakened floors or walls, loosened material, unstable structures, changing access, and other conditions.
Employees should not be permitted to work where identified structural hazards remain uncontrolled.
Electric, gas, water, steam, sewer, and other service lines can create serious hazards during demolition.
Before demolition begins, applicable service lines should be shut off, capped, or otherwise controlled outside the building line as required, and affected utility companies should be notified in advance.
Where utilities must remain in service, the lines should be appropriately relocated or protected.
Demolition planning should also consider utilities that may not appear on available drawings or records.
Employees should immediately report unidentified piping, wiring, conduits, tanks, or other systems discovered during demolition.
Buildings scheduled for demolition may contain hazardous materials that are not immediately visible.
Potential hazards may include:
Before employees disturb suspect materials, applicable hazards should be evaluated and appropriate controls established.
Pipes, tanks, vessels, or equipment that may have contained hazardous chemicals, gases, explosives, flammable materials, or similar substances should be evaluated before demolition activities disturb them.
Older buildings and structures may contain asbestos in insulation, flooring, roofing, fireproofing, mastics, pipe coverings, cement products, and other materials.
Demolition contractors should determine whether asbestos hazards may be present before disturbing suspect materials.
The level of employee training, exposure controls, regulated areas, respiratory protection, protective clothing, work practices, and other requirements depends on the work being performed and applicable asbestos requirements.
Employees who are not trained and authorized to disturb asbestos-containing or presumed asbestos-containing materials should not perform such work.
Demolition of older structures can disturb lead-containing paint, coatings, pipes, equipment, and other materials.
Activities such as cutting, grinding, torch work, abrasive blasting, mechanical demolition, and material handling may create airborne lead exposure.
Where employees may be exposed to lead, the contractor should evaluate the exposure and implement applicable engineering controls, work practices, respiratory protection, hygiene measures, training, medical surveillance, and other required protective measures.
Concrete, masonry, brick, block, mortar, tile, and similar materials may contain crystalline silica.
Demolition activities capable of generating respirable crystalline silica may include:
The company’s Silica Exposure Program should establish applicable engineering controls, work practices, respiratory protection, housekeeping procedures, training, and other required measures.
Dust suppression and collection methods should be incorporated into demolition planning where appropriate.
Demolition can create fall hazards that did not exist when the structure was intact.
Removal of walls, floors, stairs, railings, roofs, and other structural components can expose employees to:
Fall hazards should be identified as demolition progresses, and appropriate fall-protection systems should be established before employees are exposed.
Floor openings not being used for material disposal should be appropriately covered or otherwise protected as required.
Safe access becomes particularly important during demolition because normal building access may be removed, damaged, blocked, or made unsafe as work progresses.
Designated stairs, passageways, and ladders should be maintained for employee access.
Access routes should be inspected and adjusted as demolition progresses.
Employees should not use stairways, floors, ladders, or passageways that have become structurally unsafe.
Demolition operations can expose employees and others to falling structural components, tools, debris, glass, and other materials.
Areas where falling materials could strike employees should be controlled.
Depending on the operation, controls may include:
Employees should not be permitted beneath active demolition operations unless the work method and appropriate protection allow the area to be occupied safely.
Demolition debris should be removed using methods appropriate for the structure and work being performed.
Chutes, floor openings, mechanical equipment, containers, and other material-removal methods should be established and used in accordance with applicable requirements.
When material is dropped through floor openings, access to the area below should be controlled.
Openings used for debris disposal should be protected to prevent employees, equipment, or materials from unintentionally entering the opening.
Accumulated debris should not be permitted to overload floors or other structural components.
Walls and masonry sections should be removed in a manner that maintains structural stability and protects employees from falling or collapsing material.
Demolition planning should consider:
Walls left standing at the end of a shift should remain in a stable condition.
Employees should not work where an unsupported or weakened wall could collapse onto them.
Removal of floors can significantly affect the structural stability of a building and create openings, falling-object hazards, and unsafe walking surfaces.
Work should be sequenced to prevent uncontrolled collapse and protect employees working above and below the demolition area.
Safe work platforms or walkways should be provided where required, and access to areas below active floor-removal operations should be restricted.
Debris and materials should be managed so that remaining floors are not overloaded.
Demolition of steel-framed structures requires careful sequencing and control of structural components.
Structural members should be dismantled in a manner that maintains stability and prevents uncontrolled movement.
Where cranes or other hoisting equipment are used, applicable crane and rigging requirements should be followed.
Employees should remain clear of suspended loads, shifting structural members, and areas where falling or swinging components could create a struck-by or caught-between hazard.
Excavators, loaders, cranes, demolition attachments, and other heavy equipment may be used to remove structures or process demolition debris.
Mechanical demolition planning should address:
Employees who are not necessary for the operation should remain outside areas that could be adversely affected by mechanical demolition.
As demolition progresses, continuing inspections should identify weakened structures, loosened materials, and other hazards before employees are allowed to enter affected areas.
Demolition sites may contain excavators, skid-steer loaders, loaders, forklifts, telehandlers, trucks, material handlers, and other mobile equipment.
Safety procedures should address:
Pedestrian and equipment traffic should be separated where practical.
Employees should not enter equipment operating zones unless appropriate communication and controls have been established.
Demolition contractors may use cranes and rigging to remove structural members, mechanical equipment, tanks, concrete sections, and other heavy materials.
Applicable procedures should address:
The demolition sequence should account for how structural components will react when disconnected and lifted.
Selective and interior demolition may involve extensive use of saws, grinders, drills, jackhammers, chipping hammers, pneumatic tools, pry bars, and other hand and power tools.
Tools should be selected for the work, maintained in safe condition, and used according to manufacturer requirements.
Applicable procedures should address:
Employees should not use damaged tools or bypass safety devices.
Demolition frequently requires cutting structural steel, piping, tanks, equipment, and other materials.
Before hot work begins, employees should determine whether the material or equipment being cut may contain hazardous substances or residual pressure.
Hot-work procedures should address:
Tanks, vessels, piping, or equipment that contained flammable or hazardous materials should not be cut until hazards have been appropriately evaluated and controlled.
Industrial and selective demolition can expose employees to electrical, mechanical, hydraulic, pneumatic, thermal, chemical, gravity, and other hazardous-energy sources.
Equipment and systems should be evaluated before employees begin dismantling, cutting, disconnecting, or removing them.
Applicable hazardous-energy procedures should address isolation, lockout/tagout, stored energy, verification, coordination with the host employer, and safe restoration or permanent disconnection.
Employees should not assume that equipment is de-energized simply because a facility or portion of a structure is scheduled for demolition.
Demolition contractors may encounter tanks, pits, vaults, crawl spaces, vessels, utility structures, and other confined spaces.
Potential hazards may include oxygen deficiency, toxic atmospheres, flammable atmospheres, engulfment, hazardous energy, restricted access, and structural instability.
Confined spaces should be identified and evaluated before employees enter them.
Where applicable, entry procedures, atmospheric testing, ventilation, permits, attendants, rescue provisions, and employee training should be established.
PPE should be selected according to the hazards associated with the demolition operation.
Depending on the work, PPE may include:
PPE requirements should be reassessed as demolition conditions and employee exposures change.
Jackhammers, saws, heavy equipment, demolition attachments, grinders, pneumatic tools, and other demolition equipment can produce hazardous noise.
Employers should evaluate employee noise exposure and implement applicable controls.
Where required, a Hearing Conservation Program should address noise monitoring, hearing protection, training, audiometric testing, and other applicable requirements.
Demolition can expose previously concealed combustible materials, damaged electrical systems, flammable residues, fuel, compressed gases, and ignition sources.
Fire-prevention planning should consider:
Changes to fire-protection systems or emergency access should be coordinated as demolition progresses.
Demolition operations may occur next to sidewalks, roads, occupied buildings, businesses, residences, or other public areas.
The contractor should evaluate hazards that could affect people outside the immediate work area.
Controls may include:
Adjacent structures should also be considered when demolition could affect their stability.
A Job Safety Analysis (JSA/JHA) can help demolition contractors identify hazards and establish controls before individual operations begin.
Demolition JSAs may address tasks such as:
The JSA should reflect the actual task and jobsite conditions.
Because demolition conditions can change quickly, the JSA should be reviewed when the structure, work method, equipment, sequence, or other significant conditions change.
Not every demolition contractor performs the same work or requires the same safety programs.
Depending on the company’s operations, additional programs may include:
The objective is not to include every possible program. Safety programs should be selected because they reasonably apply to the company’s employees, demolition methods, equipment, structures, materials, and exposures.
Selective demolition, remodeling, and renovation may occur while portions of a building or facility remain occupied.
Additional planning may be necessary to protect occupants, customer employees, visitors, and other contractors.
Considerations may include:
Demolition hazards should be contained within the controlled work area to the extent feasible.
Demolition conditions change as structures are dismantled and materials are removed.
Toolbox talks can reinforce safety procedures and address hazards associated with current operations.
Useful demolition toolbox-talk topics may include:
Toolbox talks supplement required training but do not replace training specifically required by applicable OSHA standards.
A Demolition Contractor Safety Manual establishes the company’s overall safety policies, programs, and procedures.
A Site-Specific Safety Plan (SSSP) applies relevant requirements to the conditions of a particular demolition project.
For example, the company safety manual may contain its Demolition, Fall Protection, Silica, Asbestos, Lead, Heavy Equipment, Respiratory Protection, and Emergency Action procedures. Project-specific planning can then address the actual structure, engineering survey, demolition sequence, utilities, adjacent buildings, hazardous materials, equipment locations, collapse zones, emergency arrangements, and other conditions unique to the project.
The company safety manual therefore provides the foundation for project-specific demolition planning.
A practical Demolition Contractor Safety Manual should reflect the demolition methods and environments the company’s employees actually encounter.
When determining which programs to include, consider:
Selecting programs according to actual operations produces a safety manual that addresses the contractor’s real hazards without filling the manual with unrelated programs.
Demolition contractors can request a customized Construction Safety Manual containing the Core Safety Programs and additional programs applicable to their demolition operations, equipment, structures, materials, hazards, and workplace environments.
Programs can be selected according to the company’s actual work, allowing the manual to address structural demolition, selective demolition, interior demolition, mechanical demolition, dismantling, concrete removal, industrial work, or other applicable operations without including large numbers of unrelated safety programs.
Individual safety programs can also be selected when a demolition contractor needs to add or update a particular program within an existing manual.