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Horse Scaffolding

Horse Scaffolding. Horse Scaffolding. Horse Scaffolding is a scaffold for light or medium duty work. It is scaffolding made up of "saw horses," which support a work platform. Horse Scaffolding is mainly used during Ship Construction and maintenance.

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Horse Scaffolding

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  1. Horse Scaffolding

  2. Horse Scaffolding • Horse Scaffolding is a scaffold for light or medium duty work. • It is scaffolding made up of "saw horses," which support a work platform. • Horse Scaffolding is mainly used during Ship Construction and maintenance. • Since new methods of ship construction have come about, it has greatly reduced the use of these scaffolds.

  3. OSHA Regulations • 1915.71(g)(1) The minimum dimensions of lumber used in the construction of horses shall be in accordance with Table E-3 in 1915.118. • 1915.71(g)(2) Horses constructed of materials other than lumber shall provide the strength, rigidity and security required of horses constructed of lumber.

  4. OSHA Cont. • 1915.71(g)(3) The lateral spread of the legs shall be equal to not less than one-third of the height of the horse. • 1915.71(g)(4) All horses shall be kept in good repair, and shall be properly secured when used in staging or in locations where they may be insecure.

  5. OSHA Cont. • 1915.71(g)(5) Platform planking shall be in accordance with the requirements of paragraph (i) of this section. • 1915.71(g)(6) Backrails and toeboards shall be in accordance with paragraph (j) of this section.

  6. OSHA Dimensions Table E-3 - Specifications for the Construction of Horses Height in feet Structural members: <10 | >10<16 | >16<20 Legs .................| 2 x 4 | 3 x 4 | 4 x 6 Bearers or headers....| 2 x 6 | 2 x 8 | 4 x 6 Crossbraces ..........| 2 x 4 or 1 x 8| 2 x 4 | 2 x 6 Longitudinal braces...| 2 x 4 | 2 x 6 | 2 x 6

  7. Procedures and Policies • Scaffolds can not be more than 10 feet or two tiers in height, whichever of the two is less. • When horses are made up in tiers each horse must be placed directly over the other horse in the tier below. • The legs of each horse must be nailed down or otherwise secured to prevent displacement and each tier must be crossbraced.

  8. Procedure Cont. • Maximum intended load - Light duty: 25 pounds/foot2 • Maximum intended load - Medium duty: 50 pounds/foot2 • Bearers - Light duty2 X 4 inches • Bearers - Medium duty3 X 4 inches • Legs 2 X 4 inches

  9. Procedures Cont. • Longitudinal Braces Between the legs1 X 6 inches • Gusset braces at the top of the legs1 X 8 inches • Half diagonal braces2 X 4 inches • Horses must not be spaced more than 8 feet apart for the light-duty loads, and not more than 5 feet apart for medium-duty loads.

  10. Injuries • Injuries due to horse scaffolding are mainly fall injuries. • Since Horse scaffolding cant be higher then 10 feet, serious injuries or fatality is slim to none. • Could not find any serious injuries due to horse scaffolding or any data.

  11. Injuries • Injuries due to horse scaffolding are mainly fall injuries. • Since Horse scaffolding cant be higher then 10 feet, serious injuries or fatality is slim to none. • Could not find any serious injuries due to horse scaffolding or any data.

  12. Horse Scaffolding • Horse scaffolding is not commonly used except for construction and repairs of boats. • Can not be higher then 10 ft. • Can not be more then 2 tiers high. • Serious or fatal injuries are not commonly associated with horse scaffolding.

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