MASONRY

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MASONRY
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Masonry

• Masonry is the building of structures from
  individual units laid in and bound together by
  mortar or concrete.
• Common masonry materials include brick, stone,
  concrete block, and glass block.

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Masonry Hazards

• There are many safety hazards associated with
  masonry construction operations
• Scaffolding
• Improper Wall Bracing
• Crystalline Silica Dust
• Dangerous Tools and Equipment
• Heavy and Hazardous Materials

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Typical Injuries

• Fall Injuries
• Impact Injuries from Falling Materials and Tools
• Eye Injuries
• Respiratory Illnesses
• Inflammation of the Skin
• Impalement
• Back Muscle Injuries

• Death
• 33 Construction Fatalities are Falls
• 22 Construction Fatalities are Struck Bys

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Fatality Case

• An employee walked near a cinder block wall that
  was 20 feet tall and had been constructed 3 days
  earlier.
• The wall was not yet supported by the structure
  and braces were not properly attached to the
  masonry wall.
• A wind gust caused the wall to collapse and
  strike the employee.
• He died of multiple injuries to the head and
  torso.
• The area around the wall was not barricaded or
  marked to warn of the hazard.

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Fatality Case
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Fatality Case
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Fatality Case
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Fatality Case 2

• Employee was working on the top level of the
  fourth section of a scaffold.
• No guardrails were in place and the platform was
  not fully decked.
• The employee was pulling plastic sheeting over a
  masonry wall when he stepped off the planking.
• He fell more than 20 feet, sustaining fatal
  injuries to his head and neck.

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OSHA REGULATIONS FOR MASONRY
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Reinforcing Steel

• All protruding reinforcing steel shall be guarded
  to eliminate the hazard of impalement.
• Steel for walls shall be supported to prevent
  overturning and collapse.

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Concrete Buckets

• No employee shall be allowed to ride concrete
  buckets.
• No employee should be allowed to work under
  buckets while they are being positioned.
• Elevated buckets shall be routed so that the
  fewest number of employees are exposed to the
  hazard of falling concrete buckets.

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Concrete Buckets
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Concrete Pumping

• PPE shall be used by employees who are applying a
  cement, sand, and water mixture through a
  pneumatic hose
• Protective Head and Face Equipment.

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Masonry Saws

• Must be guarded with a semicircular enclosure
  over the blade.
• Semicircular enclosure design must retain blade
  fragments.

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Limited Access Zone

• Shall be established whenever a wall is being
  constructed.

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Limited Access Zone Criteria

• Must be established before beginning construction
  of the wall.
• Zone shall be equal to height of the wall plus
  four feet.
• Must run the entire length of the wall.
• Must be established on the unscaffolded side of
  the wall

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Limited Access Zone

• Only employees actively engaged in constructing
  the wall may enter.
• Shall remain in place until the wall is
  adequately supported to prevent collapse.

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Walls Taller than 8 Feet

• Shall be adequately braced to prevent overturning
  and to prevent collapse until permanent
  supporting elements of the structure are in place
  so that the wall cannot overturn or collapse.
• Limited Access Zone shall remain until permanent
  support is in place.

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Masonry Construction

• Construction shall also meet requirements of
  Subpart L Scaffolds and Subpart M Fall
  protection.

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Masonry Common Sense

• Wear eye protection when cutting block.
• Wear hard hats at all times to prevent injury
  from falling objects.
• Wear respiratory protection when cutting block or
  when working with cement and lime to prevent
  inhaling crystalline silica.
• Limit the weight of materials that you pick up.

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The End