Fixed Grate & Frame Stairwell Hatch (LH Cut Out) 900mm x 1200mm

Stairwell Platform System Fixed Grate & Frame (LH) Cut-out 900mm x 1200mm

Designed specifically for use with the Ockwells Stairwell Platform system, the lefthand cut-out 900 x 1200mm fixed grate is one of the primary components of the system when installed over stairwell openings that incorporate newel posts. The cut-out corner enables the grate to be installed around the newel post. 

The construction consists of a rigid outer steel frame, into which is fixed a glass reinforced plastic (GRP) grate. The outer steel frame has a series of predrilled holes along all four sides which are used as fixing points for securing the frame to the floor substrate.

Depending on the size of the stairwell opening, the lefthand cut-out grate is used in conjunction with standard fixed grates and telescopic joists to create a safe working platform for personnel during the installation of second flight staircases. In addition to the lefthand cut-out grate, a righthanded cut-out version is also available 

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 Platform System – Overview

The Stairwell Platform System is designed to provide a temporary full cover platform over stairwell openings in various combinations, suitable for use in a variety of applications, the Stairwell Platform System is specifically designed to assist in the installation of second flight staircases. The system is suitable for use in both traditional and timber frame constructions.

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. Adjustable telescopic joists are used to support the grates in applications where the stairwell opening is located alongside a partition wall, or where the stairwell opening is simply too wide for the 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 Platform System – Kits and Components

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

• Stairwell Platform System Kit
• Stairwell Platform Adaptive Panel Kit*
• Telescopic Joist 2.5m to 3.5m
• Fixed Grate & Frame 900 x 1200mm
• Fixed Grate & Frame 800 x 1200mm
• Fixed Grate & Frame (LH) Cut-out 900 x 1200mm
• Fixed Grate & Frame (RH) Cut-out 900 x 1200mm

_{*The Adaptive Panel Kit can be used alongside the components from the Stairwell Hatch System to create a Stairwell Platform System.}

Stairwell Platform System – Testing

The Stairwell Platform 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 Platform 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 Platform System – Installation

Further information on the installation of the Stairwell Platform 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 Platform System configurations to be used.

Attributes

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