1. Types of scaffolds samuel waithima 2012BC25460
SCAFFOLDING
Types of scaffolds
samuel waithima
2012BC25460

2. Defination
scaffolding is a temporary structure made from wood or metal.
It lets you work on part of a building that you can't reach from the ground.

3. Types of scaffold There are two types of sçaffolding
the putlog scaffolding ,which is supported at one end by the buildlng under construction
the independent scaffold, which has a horizontal working platform that rest on vertical poles at both ends.

4. parts of scaffold
standard-verticle member that carry weight of scaffolding to the ground
ledger -horrizontal members that connect the standards.they are parell to building
putlogs-cross members that have one end built into the wall of the building
braces member fixed diagonally to stiffen the scaffold.

5. Advantages of timber scaffold
its less expensive
it is easy to cut and fit
timber can be reused
trees are readily available

6. Disadvantages it takes longer to erect timber may have hidden defects
tinber putlog scaffold poles leaves holes in the walls, to be filled in.
the pole joints are secured with strings and nails rather than stronger purpose made fittings

7. Advantages of metal scaffolding
it is durable
it is quick and simple to erect
it is more adaptable
the poles are all same quality and strength

8. Disadvantages the initial cost is.higher than for timber
the many joint fittings can easily be lost or stolen
the poles must be carefully stored and protected when not in use