Theory

When the height above the floor level exceeds about 1.5 M a temporary structures usually of timber is erected closed to the work to provide a safe working platform for the workers and to provide a limited space for the storage of plant and building materials. The temporary frame work is known as scaffolding.


Application

It is used to provide a safe working platform for the workers and to provide a space for building materials and equipments.


Items Required

Standards (Ballis), Ledgers (Bamboos), Put logs (Wooden Planks), Transforms Braces (Diagonal Members), Rope.


Procedure

The vertical members called standards. They are first inserted into the holes made on the ground which should be perfectly vertical. In this way numbers of standards are placed at a distance of about 2.4 to 3 M. Horizontal members called ledgers. They are connected to the standards longitudinally with the help of ropes. The distance between two ledgers is kept 1 to 1.5 M. These ledgers and standards are connected by rope lashing. Transverse horizontal members called putlogs. They are placed whose one end is inserted into the hole made in the wall and the end is connected to the ledgers. The distance between two put logs is kept about 1.2 M. The put logs are provided to supports the working platform. Braces are some times provided where the high scaffolding is needed. The braces are placed diagonally which gives stability to the whole scaffolding. 
Diagram






Precautions

1. Standards, ledgers and put logs are should be of sufficient strength.

2.    All the joints should be properly tight with the roof.


3.    Material should be handle with care.