Stairwell Telescopic Joist 1.8m to 2.5m

Stairwell Hatch System Telescopic Joist 1.8m – 2.5m

Designed specifically for use with the Ockwells Stairwell Hatch System, the short Telescopic Joist is used to support the ladder plate and grate components of the hatch system.

Typical examples of its use being applications where the stairwell opening is located alongside a partition wall, therefore preventing the ladder plate and grates from overlapping onto the floor on one side for support and fixing. Or where the stairwell opening is simply too wide for the ladder plate and grates to span the full width of the opening.

The joist is adjustable between 1.8m – 2.5m and is positioned inside the stairwell opening. Once adjusted to the correct length to suit the stairwell opening an integral bolt is tightened to lock the joist at the desired length. Fixing plates on each end of the joist overlap onto the floor, enabling the joist to be secured by screw fixing it into the floor substrate. Once secured, the ladder plate and grates can be installed. A longer adjustable joist is also available for use in stairwell openings between 2.5m – 3.5m in length.

The Stairwell Hatch system should be installed in accordance with the published guidelines. A comprehensive guide detailing the full installation instructions for the system is available from your Ockwells account manager or branch.

Stairwell Hatch System – Overview

The Stairwell Hatch System is designed to provide a temporary full cover platform over stairwell openings in various combinations to suit a variety of applications and is suitable for use in both traditional and timber frame constructions.

Designed to prevent falls through stairwell openings during construction, the system provides a temporary working platform which also allows access for operatives and materials via a hinged grate hatch.

Lightweight for ease of handling and installation on site, the system is comprised of a series of frames constructed from steel with glass reinforced plastic (GRP) grates, along with a steel ladder plate for securing an access ladder. Adjustable telescopic joists are used to support the grates and ladder plate in applications where the stairwell opening is located alongside a partition wall, or where the stairwell opening is simply too wide for the ladder plate and grates to span the full width of the opening.

Fully reusable, the system is designed to have the flexibility to accommodate a wide variety of configurations and applications, and can be moved from plot to plot, and site to site.

Stairwell Hatch System – Kits and Components

The Stairwell Hatch System is supplied in both predetermined kits and as individual components. The kits and individual component which make up the system are listed below.

• Stairwell Hatch System Kit – Long Joist Set (2.5m-3.5m)
• Stairwell Hatch System Kit – Short Joist Set (1.8m- 2.5m)
• Telescopic Joist 2.5m to 3.5m
• Telescopic Joist 1.8m to 2.5m
• Fixed Grate & Frame 900 x 1200mm
• Fixed Grate & Frame 800 x 1200mm
• Fixed Grate & Frame 330 x 1200mm
• Hinged Grate & Frame 900 x 1200mm
• Ladder Plate 450 x 1200mm
• Saddle Bracket (Pair)

Stairwell Hatch System – Testing

The Stairwell Hatch System has been independently tested to BS EN 12811-1:2003. Each grate and frame has been tested to accommodate two persons standing on each panel in accordance with HSE RR342. The equivalent Uniformly Distributed Load (UDL) of 252 Kg/m² or 2.47kN/m².

The telescopic joists have been designed to support Stairwell Hatch System grates and frames with UDL of 252 Kg/m² or 2.47 kN/m² when extended to a maximum of 3.5m. If the joist is extended to 3.5m when supporting a crash deck with legs at 1m centres the load on the crash deck should be limited to load class 1 UDL to BS EN 12811 1:2003.

Stairwell Hatch System – Installation

Further information on the installation of the Stairwell Hatch System is available in our comprehensive installation guide, available from your Ockwells account manager or branch. As well as detailed installation guidance, the guide includes examples of common stairwell openings along with recommendations for the corresponding Stairwell Hatch System configurations to be used.

Stairwell Hatch System – In conjunction with Ockwells RailSafe System

When appropriate, the Stairwell Hatch System can be used in conjunction with the Ockwells RailSafe barrier system to form a safe reusable safety system for securing open stairwells, whilst still allowing controlled access for personnel and materials.

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