The components behind temporary works.

Cuplock is a system scaffold used for facades, birdcages, tank and plant access, and stair towers across the UK, Australia, the Middle East and Asia. Its standards carry cups every 0.5 m, and each node takes up to four horizontals with no loose fittings, so a crew can erect regular bays of 0.6 to 3.0 m quickly. Buyers specify the tube, the component lengths and the finish, often against BS EN 12810 and 12811 or AS/NZS 1576.

Cuplock System supplies the standards, ledgers and transoms: the ledger blades sit in the bottom cup and the top cup is turned down over them to lock the joint. Screw Jack with Base Plate & Wing Nut levels each standard at the foot, and Planks form the deck at every working lift. Ties, guardrail boards and fittings come from the scaffold contractor.

Every scaffold lift where people work needs a full, flat deck. On system scaffolds the boards hook over the ledgers or transoms; on tube-and-fitting scaffolds plain-ended boards rest on transoms clipped to the tube. US buyers usually specify planks under OSHA 1926.451, and UK buyers against BS 1139 and EN 12810 dimensions.

Planks are the deck itself, pressed from steel strip and perforated so water drains and the surface grips underfoot, with hook ends or plain ends to suit the scaffold. Screw Jack with Base Plate & Wing Nut levels the scaffold so each deck sits true.

The adjustable steel prop is the standard temporary support under slab formwork, beams, lintels and openings, and for back-propping floors below a new pour. In the UK it comes in the size series 0 to 4, each covering a band of heights; European buyers refer to EN 1065 and UK buyers to BS 4074.

Props arrive complete: the inner tube slides inside the Threaded Tube, the G Pin passes through the inner tube and rests on the Prop Nut to set the coarse height, and turning the Prop Nut on the thread brings the prop to its final height. Corona also supplies each part on its own, to keep a hire fleet in use.

When formwork is too high or too heavily loaded for single props, falsework towers carry it instead: bridge decks, transfer slabs, deep beams and tall halls. Each tower stands on adjustable jacks and carries primary beams in U-heads or fork heads at the top, specified in the UK under BS 5975 and in Europe under EN 12812.

Hi-Load Screw Jack with Wing Nut sits at the head of each leg, holding the beam in its U-head and setting the final level. Screw Jack with Base Plate & Wing Nut stands each leg on the ground, and Cuplock System can form the tower frame itself. Beams and formwork come from the formwork contractor.

Trenches for drainage, water and cable runs need their sides held back while people work below ground level. Trench sheets or timbers line each face, walings run along them, and struts set across the excavation hold the two sides apart. UK buyers refer to BS 4074 for the struts and US contractors to OSHA 1926 Subpart P for the shoring.

Trench Struts come in the same 0 to 4 size numbering as props. Each is extended to the trench width, pinned, then tightened on its screw so the claw end plates bite into the walings or sheets. The G Pin sets the strut's length; trench sheets and walings come from the groundworks contractor.