Cuplock System Specifications

Component dimensions, weights, materials, and working configurations for the cuplock modular scaffolding system manufactured at our UAE facility.

TypeModular cuplock
Tube standardEN10219
Node spacing500 mm
Compatible withBS 1139 Pt 3

Component family

The Scaffworks cuplock system is a modular scaffolding system using a top-cup / bottom-cup node mechanism that locks four blade ends in a single hammer-tap. The system is identical in concept to other cuplock systems worldwide and is fully compatible with industry-standard ledgers, transoms, and accessories.

Vertical members (standards)

Standards carry the vertical load down the scaffold. They are made from EN10219 cold-formed welded structural steel tube, with a node cup welded at every 500 mm (the standard cuplock node spacing).

SKUDescriptionLengthTube ODWall thk.Weight
STD-100Standard 1.0 m1000 mm48.3 mm3.2 mm3.9 kg
STD-150Standard 1.5 m1500 mm48.3 mm3.2 mm5.8 kg
STD-200Standard 2.0 m2000 mm48.3 mm3.2 mm7.7 kg
STD-250Standard 2.5 m2500 mm48.3 mm3.2 mm9.6 kg
STD-300Standard 3.0 m3000 mm48.3 mm3.2 mm11.5 kg

Horizontal members (ledgers & transoms)

Ledgers tie standards together horizontally and run parallel to the working face. Transoms run perpendicular and support deck planks or formwork beams.

SKUDescriptionLengthTube ODWeight
LDG-060Ledger 0.6 m600 mm48.3 mm1.8 kg
LDG-090Ledger 0.9 m900 mm48.3 mm2.6 kg
LDG-120Ledger 1.2 m1200 mm48.3 mm3.4 kg
LDG-150Ledger 1.5 m1500 mm48.3 mm4.2 kg
LDG-180Ledger 1.8 m1800 mm48.3 mm5.1 kg
LDG-210Ledger 2.1 m2100 mm48.3 mm5.9 kg
LDG-250Ledger 2.5 m2500 mm48.3 mm7.0 kg
TRN-100Transom 1.0 m1000 mm48.3 mm2.8 kg
TRN-130Transom 1.3 m1300 mm48.3 mm3.7 kg
TRN-160Transom 1.6 m1600 mm48.3 mm4.5 kg

Tube weights are calculated for 48.3 mm OD × 3.2 mm wall EN10219 steel at 7850 kg/m³ steel density, plus an allowance for end-blade and cup hardware. Actual product weights tested at our Umm Al Quwain facility fall within ±3% of the values above.

Node connection

Every Scaffworks standard has a node assembly at 500 mm intervals (excluding the bottom 250 mm so the lowest node sits at a usable height when base jacks are used). The node consists of:

A single hammer tap on the top cup engages all four perpendicular members simultaneously. This is why cuplock is faster to erect than tube-and-fitting or wedge-pin systems.

Working configurations

Slab support (formwork shoring)

For slab shoring, standards are erected on a grid pattern and topped with U-head jacks (forkheads) carrying primary beams. Typical configurations:

Access scaffold

For access scaffolds, standards run continuously and ledgers tie at each lift (typically 2.0 m). A working bay is 2.1 m or 2.5 m long with platform widths of 0.9 m (two-plank), 1.2 m (three-plank), or 1.5 m (four-plank).

Compliance

The system geometry is consistent with the cuplock systems described in BS 1139 Part 3 (compatible scaffolding components). Steel tube conforms to EN10219 S235JR / S275JR. Connection components are forged or cast steel per relevant material specifications. See EN10219 steel tube datasheet for material details.

Scaffolds erected from Scaffworks components must be designed and inspected by a competent person under the responsible contractor's HSE management system, in line with UAE labour law and local emirate-level construction requirements.

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