Stair Towers & Platforms

01 / 07

A stair tower to a vessel

4 levels of switchback stairs and a platform across to the equipment. Heights and landings follow your layout.

Scroll to see how it is built · drag to turn it round

02 / 07

A bolted frame

Columns, beams, bracing and channel stringers, cut and drilled so the tower bolts together without site welding.

How is it possible at Allmarc?

Robotic H-beam cutting and bevelling cellBeams up to 1,000 x 500 mm

Used here for: A bolted frame

• Beams up to 1,000 x 500 mm
• 12 m long, 50 mm thick
• Hypertherm XPR 300

All our machinery

Kotec newRun10DX CNC beam drilling lineH-beams up to 1,000 x 500 mm

Used here for: A bolted frame

Heavy profiles that need precise holes, where plasma cannot do the job: the lower structure and panel borders of a ground flare, and every bolted PEB and multi-storey frame.

• H-beams up to 1,000 x 500 mm
• Drills 3 faces in one pass
• Channels, angles and box sections

All our machinery

03 / 07

Grip-Strut treads

Treads made on our own Grip-Strut line: R13 anti-slip, open so mud, oil and rain fall through.

How is it possible at Allmarc?

Grip-Strut walkway automation linePunching, embossing, edge bending, shearing

Used here for: Grip-Strut treads

• Punching, embossing, edge bending, shearing
• Single-piece planks up to 8 m

All our machinery

04 / 07

Landings and platform

Landings at every floor and half level, and the platform across to the vessel, in single-piece planks.

05 / 07

Handrails

Two-rail handrails on both sides of every flight and toe plates round every landing.

How is it possible at Allmarc?

CNC pipe bendingCNC pipe and tube bending

Used here for: Handrails

• CNC pipe and tube bending

All our machinery

06 / 07

Built round your equipment

The vessel is the client’s; the tower is sized to reach it.

07 / 07

A kit of parts

Frame, treads, landings and rails: every member numbered, match-marked and packed in erection sequence.