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Questions and Answers
What is the purpose of diagonal braces in a scaffold?
What is the purpose of diagonal braces in a scaffold?
- To hold the platforms
- To prevent lateral movements (correct)
- To support the structure
- To fix the outriggers
Why should decayed lumber not be used in wooden scaffolding?
Why should decayed lumber not be used in wooden scaffolding?
- To prevent lateral movement
- Because it easily breaks (correct)
- To ensure proper nailing
- For aesthetic reasons
What is the purpose of cleats in a scaffold?
What is the purpose of cleats in a scaffold?
- To prevent lateral movements
- To hold the platforms
- To secure the supports
- To support outriggers (correct)
Why is it important to avoid long protruding platforms beyond the supports in scaffolding?
Why is it important to avoid long protruding platforms beyond the supports in scaffolding?
What should be done to prevent overhanging platforms from breaking or tipping off?
What should be done to prevent overhanging platforms from breaking or tipping off?
Which part of a scaffold holds the lower portion of the legs or upright support of the structure?
Which part of a scaffold holds the lower portion of the legs or upright support of the structure?
What is the purpose of a walk through scaffolding frame?
What is the purpose of a walk through scaffolding frame?
What component is included in the walk through scaffolding frame described in the text?
What component is included in the walk through scaffolding frame described in the text?
What is the purpose of cross braces in a metal scaffold?
What is the purpose of cross braces in a metal scaffold?
What type of scaffold frame is described as having a climbing ladder on one side?
What type of scaffold frame is described as having a climbing ladder on one side?
What is the height of the double step masonry end frame mentioned in the text?
What is the height of the double step masonry end frame mentioned in the text?
What component of a metal scaffold is used to provide a walking surface for workers?
What component of a metal scaffold is used to provide a walking surface for workers?
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Study Notes
Parts of a Portable Scaffolding
- Outrigger: holds the platforms
- Uprights or Posts: support the structure
- Platforms: raised floors used by workers
- Diagonal Braces: prevent lateral movements of the scaffold
- Cleats: fixed to support outriggers
- Horizontal Support: holds the lower portion of the legs or upright support
Safety Rules in the Construction of Wooden Scaffolding
- Use strong lumber for the scaffolding
- Avoid decayed lumber or lumber with knots, wind shakes, and splinters
- Properly brace the uprights to prevent lateral movement
- Nail all platforms to their supports
- Avoid long protruding platforms beyond the supports
- Place enough support for the platform
- Properly secure the supports of the bracket and cantilever scaffolds
Types of Metal Scaffolds
- Walk-through Scaffolding Frame: 6.5 feet high, 5 feet wide, open type, walk-through scaffolding end frame
- Masonry Walk-through Ladder Frame: 6.5 feet high, 5 feet wide, with climbing ladder on one side
- Standard Masonry End Frame: 5 feet high, 5 feet wide, single ladder
- Double Step Masonry End Frame: 4’.6” high
Parts of a Metal Scaffold
- Frame: the skeletal structure of a scaffold
- Cross Braces: diagonal braces fixed to avoid lateral movement of the structure
- Platform: the horizontal plank or board on top of the frame
- Castor: an accessory used in fitting the parts of a scaffold
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