OSHA Office of Training & Education 1

Safety Standards for Demolition 29 CFR Part l926.850

• This presentation only focuses on standards cited by OSHA in 2014

Demolition [1926.850 – 860]

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REMOVAL OF STRUCTURAL OR LOAD-SUPPORTING MEMBERS

SHORING AND BRACING OF WALLS AND FLOORS

ENGINEERING SURVEY PRIOR TO DEMOLITION OPERATIONS

CHUTE OPENING PROTECTED BY A GUARDRAIL

NOT DROPPING MATERIALS OUTSIDE EXTERIOR WALLS

SUBPART T

850(b)

854(b)

852(a)

852(e)

850(a)

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6

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Preparatory Operations

• Engineering survey shall be made, by a competent person

• In Writing

1926.850(a)

Local Demolition and Debris Removal Plan (LDDRP)

ZONE ‘A’ CARREFOUR FEUILLE and ZONE B FORT MERCREDI and CITE 9.

1. Security and Safety2. Demolition and Debris Removal Management3. Building Assessments4. Demolition ‘flowchart’

• The DDM Coordinator and The Project Engineer in consultation with the Demolition Expert will compile the following :a. Risk assessments highlighting ‘High – Medium – Low’ level risks relating to the specific job site. b. Means and method statements of work completed in detail for all stages of the demolition and debris clearance

operations. c. Detailed time line programme for the works showing various on and off the job site tasks d. and the expected respective completion dates.

5. Hazardous and Dangerous Material Procedures.1. In buildings to be demolished : If material is suspect ; Take a small piece / sample Place it into a clear plastic sample bag and securely seal the opening to the bag. Write clearly on a label, the building reference number, its address and the location where in the building the sample was taken

from and, Deliver the sample to the DDM Coordinator who will, Forward the sample to a recognised and approved laboratory for testing. If the results of the laboratory test prove to be positive ; Appropriate steps must be taken to remove and dispose of the hazardous material in strict accordance with the method of work statement

to be developed and provided by the Project Engineer and approved by the DDM Coordinator. If there are any obvious signs of suspect materials that may contain a hazardous substance (asbestos If the results of the laboratory test prove to be positive : 6. Building Demolition Sequence in Zone A and Zone B.• Public buildings (schools, hospitals, churches and public assembly buildings)• Private Buildings with the ‘Approval to Demolish’ provided to UNOPS by UNHABITAT.7. Debris Removal Sequence 8. Training. 9. Human resources

a) Management Team:• Project Manager - 1• Project Coordinator - 1• Operations Manager - 1 • Demolition Expert / Engineer - 1• DDM Coordinator - 1• Logistic Manager - 1• Field Engineers (Senior) - 2

Job Site Management Teams: Job Site Demolition Machine Operators:

Job Site Demolition Operatives: Eight (8) Crews will be composed, consisting of; • Skilled Demolition Topmen - 2• Demolition Labourers - 4• Banksmen - 2

Debris Transport team Transfer Station Team. Triage Labourers and Crusher Operators Team.

10. Equipment Required :a) Demolition Means and Method of Works at the Job Site Locations:b) Debris Removal c) Triage / Transfer Station

11. Technical and Safety Protocols for Demolition12.Safety Protocol for the TRIAGE / Transfer Station Job Site.13.Work documents 14.Record of the completion of training courses for all operatives :

Safety Awareness Courses to be developed by UNOPS Demolition Expert. First aid Course to be developed by Demolition Expert and First Aid Adviser.

Note : First Aid Kit will be located on the job site.

Preparatory Operations

• When employees are required to work within a structure to be demolished which has been damaged by fire, flood, explosion, or other cause, the walls or floor shall be shored or braced

1926.850(b)

Preparatory Operations

• All electric, gas, water, steam, sewer, and other service lines shall be shut off, capped, or otherwise controlled, outside the building line before demolition work is started.

1926.850(b)

Preparatory Operations

• All electric, gas, water, steam, sewer, and other service lines shall be shut off, capped, or otherwise controlled, outside the building line before demolition work is started.

1926.850(c)

Preparatory Operations

• It shall also be determined if any type of hazardous chemicals, gases, explosives, flammable materials, or similarly dangerous substances have been used in any pipes, tanks,

1926.850(e)

Preparatory Operations

• When debris is dropped through holes in the floor, the area onto which the material is dropped shall be completely enclosed with barricades

• Signs, warning of the hazard of falling materials, shall be posted at each level.

1926.850(h)

Preparatory Operations

• Employee entrances to multistory structures being demolished shall be completely protected by sidewalk sheds or canopies

1926.850(k)

Stairs, Passageways, and Ladders

• All stairs, passageways, ladders shall be periodically inspected and maintained in a clean safe condition.

1926.851(b)

Stairs, Passageways, and Ladders

• In a multistory building, when a stairwell is being used, it shall be properly illuminated by either natural or artificial means

1926.851(c)

Chutes

• No material shall be dropped to any point lying outside the exterior walls of the structure unless the area is effectively protected

1926.852(a)

Chutes

• All materials chutes, or sections thereof, at an angle of more than 45 deg. from the horizontal, shall be entirely enclosed

1926.852(b)

Chutes

• Any chute opening, into which workmen dump debris, shall be protected by a substantial guardrail approximately 42 inches above the floor

1926.852(e)

Chutes

• Where the material is dumped from mechanical equipment or wheelbarrows, a securely attached toeboard or bumper, not less than 4 inches thick and 6 inches high, shall be provided at each chute opening.

1926.852(f)

Removal of Walls, Masonry Sections, and Chimneys• No wall section, which is more

than one story in height, shall be permitted to stand alone without lateral bracing

1926.854(b)

Removal of Walls, Masonry Sections, and Chimneys• Structural or load-supporting

members on any floor shall not be cut or removed until all stories above such a floor have been demolished and removed

1926.854(d)

Removal of Walls, Floors, and Material with Equipment.• Floor openings shall have

curbs or stop-logs to prevent equipment from running over the edge

1926.856(b)

Mechanical Demolition

• During demolition, continuing inspections by a competent person shall be made as the work progresses to detect hazards resulting from weakened or deteriorated floors, or walls, or loosened material

1926.859(gb)

Summary

• Always start at the top• Basements can cause equipment

to fall in• Remove lead and asbestos first• Evaluate structral members

before cutting