Chapter: Civil : Construction Techniques, Equipment And Practices : Construction Practices

Scaf Folding

Scaf Folding
When te higt of wall or column or othet structural member of a building exceeding1.5 m temporary structures needed to support trhe platforms over which the work man sit and carry o the work

SCAF FOLDING

 

When te higt of wall or column or othet structural member of a building exceeding1.5 m temporary structures needed to support trhe platforms over which the work man sit and carry o the work

 

These temporary structures constructed very close to the wall is in the form of imber o steel frame work commonly called as scaffoldings

 

Components of scaffoldings 

Ledgers

Braces

Put logs

Transoms

Boarding

Guard rail

Toe board

Single scaffolding or brick layer scaffolding

Double scaffoldings or masons scaffoldings

Cantilever or needle scaffoldings

Suspended scaffoldings

Trestle scaffolding

Steel scaffolding

Patented scaffoldings

 

1.Single scaffoldings

 

This consists of a single frame work of standards, legers, put logs etc

Constructed parallel to the wall at a distance of about 1.2 meters

 

The standards are placed at a distance of 2to2.5m interval

 

Ledger connected with the standards, and are proved

Double are masons

 

Put logs or connected with one end on the ledgers and other end at the holes of the wall at an interval of1.2 to 1.5 m interval

scaffoldings

It is very difficult to put holes in walls to m support putlogs in stone masonry

 

In the case a strong scaffolding is used consisting of two rows of scaffolding

 

The first row placed 20 to 30 cm away from the wall the other frame will 1m distance from the first one

 

Put logs are the supported on both the supports, rakers and cross braces are provided to make the scaffolding more strong

 

It also called as independent scaffoldings

2Cantilever or needle scaffolding

 

Cantilever supports can be used under following circumctances

 

Ground is week to support standards

Construction of the upper part of the wall is to be carried out

It is required to keep the ground near wall free for traffic etc i

 

It ha s two types

 

Single Frame

 

Te standards are supported on series of needle taken out through opening or through holes

 

Double frame

 

The needles are projecting beams are strutted inside the floors

 

3 Suspended scaffolding

 

It is the light weight scaffolding used for repair works such as pointing, painting etc

 

The working platforms are suspended from roofs by means of wire ropes or chains etc

 

4 Trestle scaffolding

 

Such type of scaffoldings are used for painting and repairing work inside the room up to a height of 5m

 

The working platform is supported over the top of movable contrivances such as tripods ladders etc

 

5 Steel scaffolding

 

Steel scaffolding is practically similar to the timber scaffolding, here wooden members are replaced by steel couplets are fittings

 

Such scaffolding can be erected and dismantled rapidly

 

It has a greater strength and greater durability

 

6 Patented scaffolding

 

Many patented scaffolding made of steel are available in the market Thos scaffoldings are equipped with special couplings frames etc


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