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Ladder Jack Scaffolds

Equipment. 2 heavy-duty extension ladders.1 Set of ladder jacks.Scaffold Planks.. Why Safety is a Concern. Falls from ladder or scaffold during erection.Injuries caused by falling material, equipment, or plank itself falling.Injuries due to collapse of scaffold (Improper erection, faulty elements, struck by moving vehicles). Electric shock or electrocution (Power lines, defective power equipment)..

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Ladder Jack Scaffolds

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    1. Ladder Jack Scaffolds

    2. Equipment 2 heavy-duty extension ladders. 1 Set of ladder jacks. Scaffold Planks.

    3. Why Safety is a Concern Falls from ladder or scaffold during erection. Injuries caused by falling material, equipment, or plank itself falling. Injuries due to collapse of scaffold (Improper erection, faulty elements, struck by moving vehicles). Electric shock or electrocution (Power lines, defective power equipment).

    4. Why Safety is a Concern (Cont.) 5. Cuts, bruises, and pinches by temporary structure or power tools. 6. Injuries caused by flying particles (eyes). 7. Bites by snakes or dogs during erection and bees and other insects during actual work. 8. Injuries by pranks or horseplay of fellow workers.

    5. Why Safety is a Concern (Cont.) 9. Exposed to UV radiation when working in sun for long periods of time. Exposure to excessive noise due to mechanical equipment and hand tools. 11. In weather for long periods of time, resulting in acute or chronic diseases. 12. Exposure to chemical hazards while working (Paint or thinner).

    6. Why Safety is a Concern (Cont.) Skin rashes due to contact with bird droppings, parasites in bird nests, mosquitoes, other insects or rodents. Musculoskeletal injuries due to awkward working positions. Overexertion while handling heavy and/or bulky objects during erection or work. Psychological problems due to fear of heights or being over cautious.

    7. Why Safety is a Concern (Cont.)

    8. Statistics and Numbers of Fatalities 27 fatalities due to ladder jack scaffolds of the 13,511 fatalities reported between 1990 and 2007.

    9. Statistics and Numbers 0f Fatalities (Cont.)

    10. Statistics of Fatalities (Cont.)

    11. Descriptions of Fatality FALL Example: Employee was climbing the ladder of a ladder jack scaffold while carrying a 2 in. by 12 in. by 12 ft wooden board. The ladder's feet were on a brick walkway. The ladder slipped and the employee fell, striking his head on a concrete patio. He died of a fractured skull.

    12. Description of Fatality (Cont.) ELECTROCUTION Example: A painter and his coworker were erecting a ladder jack scaffold. The painter was standing on a metal pick board at a height of 28 feet. The scaffold was about 7 feet away from an 8000-volt overhead power line. The 22-foot-long metal hand rail the painter was handling contacted the power line, electrocuting him.

    13. Description of Fatality (Cont.) MALFUNCTION Example: Employee was carrying a bundle of shingles up a faulty ladder. The ladder split, cracked, and broke, causing the platform with the two coworkers to also fall. The ladder jack scaffold struck the employee, causing multiple trauma to the head. He died.

    14. Description of Fatality (Cont.) Struck-By Example: Employee and a coworker were working on a ladder jack scaffold approximately 8 ft tall when an employee of another company drove a forklift by the scaffold. The forklift struck the ladder, causing the scaffold to collapse and the employee to fall to the ground. The forklift operator backed up the machine, running over the employee’s head.

    15. OSHA Regulations Ladder jacks shall be used only for design purposes. No more than 2 employees on the platform at a time. Platform shall be at minimum 14” wide. Ladders supporting plank shall be spaced at least 16’ O.C.

    16. OSHA Regulations (Cont.) Platform must rest on ladder rungs and bear at least 8” on each rung. When working on a special purpose ladder scaffold, full body harness must be used in either: a). Lanyards attached to independently anchored safety line, b). Self retracting life lines attached to approved anchors.

    17. Suggested PPE Hard Hat Eye Protection Gloves Safety Harness with strap extension Lanyard with integral fall arrest absorber

    18. Erection/Safety Procedures Determine best position for the 2 ladders. Be aware of every move; an innocent mistake can result in a falling. Position 2 ladders so when the plank is in position each end will extend a minimum of 12 inches and a maximum 18 inches beyond each jack. Make sure ladders are level and stable. Secure each jack properly to the rung one at a time at desired and equal heights.

    19. Erection/Safety Procedures (Cont.) Bring up first end of plank while other end of plank remains on ground. Bring up second end of plank and secure jacks into position.

    20. Think Safety Work Safely

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