RiserSafe® Clamshell
Verified by manufacturer 14 hours ago
A modular flooring system for riser shafts in multi-storey buildings. designed with a hinged floor plate to allow multi storey MEP modules to be installed, and the floor plates close around services.
Application
Riser Safe Clamshell can be used for concrete and steel frames. Designed with a hinged floor plate to be cast into the structural frame . When the multi storey MEP modules are ready to install the floor plates are lifted into the vertical and clipped in place, the MEP modules are lowered down the shaft through the floor levels, when positioned the floor plates closed in sequence around services which are all modelled in the virtual world. Making the whole task easy and safe in the real world.
Description
Riser Safe Clamshell is a modular riser flooring system that is cast into the structural frame with Mechanical, Electrical and Plumbing (MEP) modules in mind, to be installed later in the construction cycle of a new development. The hinged floor plates have pre-designed penetrations with soakers and lids prefixed at the factory for complete safety on site. When the time comes to install these multi floor MEP units, the clamshell design has been harmonised with the MEP manufacturer to open to allow the lowering into position of these MEP units. The hinged floor plates are closed around the services contained in sequence to provide a safe, secure, non-combustible riser flooring to last the design life of the building.
Riser Safe soakers are installed to close off tolerance gaps to prevent materials dropping through. These allow the growing use of MEP modules to be easily installed with complete safety at the heart of the design. Allowing principal designers to avoid risk in their design and flexibility for the principal contractor.
General information
Color | Red Guidance for specification option: Steel floor plates and relocation beams are shot blasted and primed with red oxide primer (26–30 μm thick). Grey |
Finish | Shot blasted Primed |
Material | Steel Zintec steel |
Shape | Rectangle |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 60 year |
Uniclass | |
CAWS | E20/70 Formwork E60/210 Floor E20/145 Permanent formwork E20/225 Permanent formwork for suspended floors E20/230 Modular riser flooring units |
Specification data - Modular riser flooring units
Classification data | |
Certification | Factory Production Control (FPC) and welding certificate. UKCA. FORS gold standard. Guidance for specification option: Welding certificate No: 2273-CPR-0224-WC. Factory Production Control: Certificate No 2273-CPR-0224. |
Designation | S275JR+AR for riser plate, DC01+ZV for support frame, and S235JRH for support beams. |
Plate | 6 mm-thick hinged durbar floor plates, shot blasted and red oxide primed (26–30 µm thick). Blank or pre-cut with MEP service penetrations. Manufacturer guidanceNote: The main contractor is responsible for providing the riser flooring and all associated secondary support steelwork to ensure safe and accessible access to the risers, with adequate working space for maintenance and inspection. The main contractor is also responsible for the complete design, coordination, and installation of the riser flooring systems. This includes the provision of kick plates, soaker plates, and handrails as necessary, all in compliance with best practice guidelines from the Health and Safety Executive (HSE). |
Frame | 3 mm Zintec coated steel 'C' section with 3 mm backplate and bottom flange. Concrete embedment tangs welded to RiserSafe® unit at 600 mm centres. 75 x 75 x 6 mm RSA brackets. |
Size | As drawings. Guidance for specification option: Insert reference. Units larger than 1000 x 1000 mm are supplied with removable toothed joist hangers and supporting relocation beams. Beam hangers will be used to allow beams to function at right angles. |
Additional supports | |
Size | 60 x 100 x 5 mm RHS relocation beams. 60 x 100 x 5 mm RHS relocation beams, welded to provide fixing points for fire-rated walls. Guidance for specification option: Fixing points can be provided for FR 30/ 60/ 90/ 120 dry-lined walls, as required. |
Material and finish | Steel, shot blasted and red oxide primed (26–30 µm thick). |
Fixings | Floor plates: Fixed with 5/16 hex head 5.5 x 38 mm tek screws. Wall plates: Fixed with M16 RAWL HPIIZF-16140/20 throughbolt anchors U.N.O. - refer to supplier's drawings. Guidance for specification option: Shear wall plates set at 600 mm centres with 20 mm diameter holes for M16 (supplied as part of the system) bolted connection. Fish tangs are provided every 600 mm for embedment purposes. |
Prepared openings | As drawings. Guidance for specification option: Insert reference. Cover plates over the top of the service penetrations pre-cut in the floor plates of the RiserSafe system. The temporary hole protection is part of the unit and only removed when services are being installed. |
Integral accessories | 3 mm Zintec steel joist hangers/hook plates and beam hangers. Soaker plates (mechanical and electrical). Cover plates for all MEP cut-outs. Stencilled lettering “remove for services” (RFS) on cover plates, 6 mm fillet welded lifting eyes. |
Reaction to fire | To EN 13501-1, Class A1 (non-combustible). Guidance for specification option: Up to 1000°C for 90 minutes. |
Safe Working Load | 2.5 kN/m² UDL. |
Tolerances | +/-5 mm manufacturing tolerance. |
Brackets | Manufacturer's standard. Manufacturer guidanceBrackets are included as part of the RiserSafe® system. Refer to the manufacturer's literature for details. Please note, Ambar Kelly does not supply Halfen channels and fixings. |
Secondary support structure | 100 x 60 x 5 mm RHS firewall beams welded to RiserSafe®, wrapped in fire boarding (by others). Guidance for specification option: The 'C’ section is removed in firewall beam locations and Durbar plate supplied to close off gap during construction. |
Verification | Submittals: Drawings of all prefabricated modular riser flooring units, in PDF and DWG formats, showing dimensions and layout, safe working load, and safety-critical installation steps, and a 3D model of the permanent maintenance modular riser flooring units. Manufacturer guidanceAmbar Kelly provides coordinated drawings at scales suitable for review, coordination, and fabrication. Drawings are compliant with Common Data Environment (CDE) naming conventions. Ambar Kelly coordinates directly with Architectural, Structural, and MEP (Mechanical, Electrical, and Plumbing) contractors, incorporating their RVT/IFC models. Ambar Kelly provides an Autodesk Revit tool (templates, families, or plugins as required) for the modular riser flooring unit to the design team, enabling them to design interface details with structural elements, MEP services, and fire compartmentation requirements (both horizontal and vertical). |
Timing | Drawings: Submit before fabrication. 3D model: Submit before integration into the federated model. |
Sustainability data
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Steel Zintec steel |
| Carbon dioxide equivalent | |
Carbon dioxide equivalent, as defined in BS EN 15804 Self-declared | |
Stage Normalised unit (kg CO₂ eq/kg) Declared unit (kg CO₂ eq/kg) Stage:A1–A3 ('Production stage') Normalised unit : 2.84 (kg CO₂ eq/kg) Declared unit : 2.84 | |
Recyclability | 98 |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 80 % |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 2 |
Literature
RiserSafe Clamshell -Tec Data Sheet
CPD materials
Riser Shafts - How to Avoid Failure
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