Scaffolding Parts

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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.
SCAFFOLDING
SCAFFOLDING PARTS

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
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:

Adjustable-base-jack
  • Maximum load bearing capacity is 30 kn.
  • Lift the jack nut up 2/3rd 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:

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

Swivel coupler:

swivel-coupler
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:

box-clamp-sleeve-coupler
box-clamp-sleeve-coupler
  • Load capacity 550kg.

Ladder clamp:

ladder-clamp
ladder-clamp
  • Load capacity 550kg.

Plank coupler:

  • Load capacity is 565 kg.

Put log coupler:

putlog-coupler
  • Load capacity is 63 kg.

Beam clamp:

Beam-clamp
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?

What are the main parts of scaffolding?

  • 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 railMid rail.Toe board.Ladder.False upright.Drop bar.Rope.Pulley.Lifting bag.Putlog.Bridle.Racker, etc
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