Scaffolding Parts

Scaffolding parts and component details are given below.

• Sole plate.
• Base plate.
• Adjustable base jack.
• Base lift or kicker lift.
• Tubes.
• Standards or posts.
• Ledgers or runners.
• Transom or bearer.
• Bracing.
• Scaffolding coupler or clamp.
• Ladder.
• Scaffold plank.
• Platform.
• top rail
• Mid rail.
• Toe board.
• Ladder.
• False upright.
• Drop bar.
• Rope.
• Pulley.
• Lifting bag.
• Putlog.
• Bridle.
• Racker, etc.

Sole plate:

• Sole plate is used for load distributing.
• Large pieces of metal put under the base plate to spread the load over a wide surface area when the scaffold is erected on soft ground.
• Its size must be 300 mm * 300 mm *6 mm.
• Use under every base plate where the foundation surface is soil or on soft ground.
• Use of sole plate if thickness of concrete roof less than 75mm.
• Sole plate is placed under anti slip safety shoe of ladder on soft ground.

Base plate:

• Base plate used for distributed load.
• Small square metal plate that the standard rest on to prevent them to sinking into the ground.
• Size of the base plate must be 150mm * 150 mm * 6 mm.
• It is placed under every scaffold except mobile scaffold (Because mobile scaffold has wheels).
• It has a centre circular spigot (called shunk) at least 75 mm high and circumference of spigot should be equal to 80% of the circumference of pipe so only 20 % margin left there for the free movement of pipe fitted on shunk.

Adjustable base jack:

• Maximum load bearing capacity is 30 kn.
• Lift the jack nut up 2/3^rd of its height.

Kicker lift/ Base lift:

The first runner is installed 150mm above the ground surface is called kicker lift or base lift.

Tubes:

• Outer diameter of scaffold pipe is 48.3 mm.
• It is important to check the tube before use.

Example of damaged tubes:

• Flame cut tube.
• Cross cut tube.
• Mushroom head tube.
• Split end tube.
• Bent tube.
• Welded tube.

Standard or post:

• Standard should be perpendicular.
• The whole weight of the scaffold on standard.
• Maximum space between two standard is 2 meters.

Ledgers or runners:

• Ledger should be 180°.
• These are the horizontal members parallel to the wall.
• Ledgers should be fixed inside the standards.
• Only fix clamp used to join standards and ledgers (Because it is a load bearing coupler).
• Two joints of ledgers not come together in same bay.
• Use box clamp to join two ledgers or otherwise use sleeve coupler.
• The vertical distance between two ledgers is not more than 1.8 meters.
• The first ledger known as kicker lift.
• Minimum overhang from standard is 50mm.
• Maximum overhang from standard is 150mm.

Transom or Bearer:

• Transoms are putlogs, but their both ends are supported on the ledgers.
• Place the transom inside the standard and over the ledgers.
• Transom must be fitted with fix clamp.
• Transom pipe is to be installed every 1.5 meter below the platform.
• Minimum over hang from ledger is must be 50mm.
• Maximum over hang from ledger is must be 150mm.
• Minimum overhang from transom is 50mm.
• Plank sit on transom which bear the weight of working platform.

Bracing:

Bracing is a diagonally tube fixed on the standards that make the scaffold structure strong and stable.

Scaffolding coupler or clamp:

Join two scaffold tubes to each other to assemble a scaffold. Some couplers are given below.

Right angle coupler or fix clamp:

• Load capacity of A class is -610kg, B class is -910 kg.
• Join two pipes at 90°.

Swivel coupler:

• Load capacity of A class is 610 kg, and B class is 910 kg.
• Join two pipes in any degrees.

Sleeve coupler or box clamp:

• Load capacity 550kg.

Ladder clamp:

• Load capacity 550kg.

Plank coupler:

• Load capacity is 565 kg.

Put log coupler:

• Load capacity is 63 kg.

Beam clamp:

• Load capacity is 3000kg.
• There are 3 sizes are available, such as 50mm, 75mm, 100mm.

Ladder:

• A ladder is a piece of equipment used for climbing up or down.
• Ladder should be projected at least 1.05 meter above the working platform.

Scaffold plank:

• Scaffold plank size must be 2100mm* 280mm *38mm.
• Plank come in three thicknesses such as 38mm, 50mm, 63 mm.
• It should free from defect and corrosions.
• Minimum overhead from transom is 50mm.
• Maximum overhead from transom is 150mm.
• Transom pipe is to be installed every 1.5meter below the platform.

Platform:

The scaffolding platform has 3 types.

• Service platform.
• Access platform.
• Working platform.

Top rail:

• The top rail height must be 1050 mm. (i.e., 950 mm to 1200 mm).

Mid rail:

• Mid rail height must be 525 mm. (i.e., 450mm to 600mm).

Toe board:

• This is a board placed parallel to the ledger and supported between the putlogs.
• Height must be 150 mm.
• It is provided to prevent fall loose material from the platform.

False upright:

• It is a vertical pipe which is fitted with ledger, mid rail, and top rail.
• Minimum length of false upright should be 1.5 meter.

Drop bar:

• It is works like a door or gate.
• Drop bar is fitted in false upright with swivel clamp.
• Gate size must be 1000mm*600mm.

Rope:

• Polypropylene rope will be used for the lifting up and down the materials.
• Rope used for lifting will be 18mm to 20 mm in diameter.
• Tail rope should be 4.2 meter long.
• Check the rope before use.

Pulley:

• Pulley is used to move material from ground to top or top to ground.
• Safe working load of gin wheel or pulley is 250 kg, but maximum lifting is 25 kg.
• It is divided in to two parts:
  • Ring type pulley.
  • Hook type pulley.

Lifting bag:

• It is used for lifting clamps and other materials.
• Lifting capacity of bag is 25 kg.
• Check the lifting bag before use.

Putlog:

• Putlogs are the transverse pieces which are placed on the ledgers and which are supported on the wall at one end.
• They are at right angles to the wall.

Bridle:

This is a piece that is used to bridge an opening in a wall and it supports one end of the putlog of the opening.

Racker:

Racker is the inclined support.

FAQs for Scaffolding parts?

Related Topics:

• What is scaffolding?
• Scaffolding Tag.