Occupational Safety and Health Administration /Plumbing - OSHA Flashcards Part 2
Plumbing - OSHA Flashcards Part 2
This deck covers essential OSHA guidelines and safety measures for scaffolding in plumbing, including definitions, requirements, and best practices.
What is a base plate?
A piece of metal (6" square) that helps distribute the scaffold leg load over a larger area.
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Key Terms
Term
Definition
What is a base plate?
A piece of metal (6" square) that helps distribute the scaffold leg load over a larger area.
What is a screw jack?
A mechanical device consisting of a threaded rod and a wing nut. It is used to level heavy loads. The screw jack attaches to the base plate.
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How do scaffold legs attach to the base plates?
With pins or locking devices.
How do base plates or screw jacks attach to the sills?
They should be centered on the sills and nailed in place. Nails should be in two corners opposite each other and bent over to lock the base plate to t...
How do we know a scaffold is plumb, level, and square?
Scaffold erectors use basic carpenter's tools to check for plumb, level, and square. The competent person must make this check as well. You can make v...
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What parts should not a scaffold contain?
Parts from another manufacture cannot be modified to fit a scaffold without the approval of a competent person. Parts made of dissimilar metals cannot...
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| Term | Definition |
|---|---|
What is a base plate? | A piece of metal (6" square) that helps distribute the scaffold leg load over a larger area. |
What is a screw jack? | A mechanical device consisting of a threaded rod and a wing nut. It is used to level heavy loads. The screw jack attaches to the base plate. |
How do scaffold legs attach to the base plates? | With pins or locking devices. |
How do base plates or screw jacks attach to the sills? | They should be centered on the sills and nailed in place. Nails should be in two corners opposite each other and bent over to lock the base plate to the sill. |
How do we know a scaffold is plumb, level, and square? | Scaffold erectors use basic carpenter's tools to check for plumb, level, and square. The competent person must make this check as well. You can make visual check to see if a scaffold is badly out of alignment. |
What parts should not a scaffold contain? | Parts from another manufacture cannot be modified to fit a scaffold without the approval of a competent person. Parts made of dissimilar metals cannot be intermixed without the competent person's approval. |
What is a brace? | A brace holds one scaffold member in a fixed position in relation to another. Bracing works horizontally or diagonally to reduce movement. They reduce sway and prevent collapse by keeping the frames square. OSHA requires braces on all supported scaffolds. |
Why are guardrails so important? | Guardrails prevent workers from falling off the scaffold. |
When does OSHA require guardrails around exposed sides and ends of scaffold platforms? | 10' or higher. |
How toprails must be? | 38 to 45" above the working platform. They should be 2x4" lumber or equivalent metal or cable. |
When is cross-bracing acceptable as a toprail? | The crossing point of two braces is between 38" and 48" above the work platform. |
What is midra? | A barrier about halfway between the toprail and the toeboard. It must be 1x6" lumber or equivalent material. |
When is cross-bracing acceptable in place of a midrail? | The crossing point of the two place is between 20 and 30 " above the platform. |
What are toeboards? | Vertical barriers at the exposed sides and ends of a scaffold platform. They must be at least 3 1/2" high. |
What must be in place if collected materials will be above toeboard height? | 18 gauge US standard wire 1/2" mesh or equivalent must be in place between toeboardsj and toprails. |
What is safe access? | A safe means of getting on and off of the scaffold. The safest access is internal stairs. The next safest is a vertical ladder built into or attached to the scaffold frame. |
When and what must be used as safe access to scaffod? | If platforms are more than 2' above or below a point of access, then stairways, ladders, or personnel hoists must be used. |
What is 3-point climbing? | You always have two hands and one foot or one hand and two feet in contact with the ladder and you face the ladder. |
What is a safe platform for scaffold? | A fully planked platform. |
What are most scaffold platforms? | Scaffold-grade wood or metal or fabricated planks or decks. |
How should planks in scaffold platforms extend? | 10' long or less - at least 6" but not more than 12". | 2. Longer than 10' - up to 18". |
What are warnings for scaffold platform extentions? | Don't step on the extension. | 2. Don't store materials on it. |
How must safe platform build from plank for scaffolds? | If they overlap, they should meet at the uprights and overlap by at least 12" or be secured on place. If they abut, each end must rest on a separate support. |
How planks should be secured together scaffold platforms? | With cleats, bolts, or other attachments to keep them from moving. |
How do manufactured work platforms attach to the scaffolds? | They clamp to the scaffold frame and are fully planked. |