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Material Specification - 350N/mm2 Steel
Steel strip for Multideck 60-V2 complies with BS EN 10143 and BS EN 10147 with a guaranteed minimum yield strength of 350N/mm² and a minimum total coating mass (including both sides) of 275g/m².
Concrete Volumes & Specification
Load/span tables are based on Grade 30 concrete, having a design strength of 30N/mm². Density of normal weight concrete: 2400kg/m³ at wet stage. Density of lightweight concrete: 1900kg/m³ at wet stage. All concrete used with Multideck in the construction of composite slabs should comply with the recommendations in BS 8110: 1997.
Reinforcement
Reinforcement of the slab to prevent cracking at all intermediate supports is required in BS 5950: Part 4 1994. Steel reinforcement for anti-crack or fire engineering purposes in accordance with British Standards: Hot rolled bars – BS 4449: 1997; Fabric reinforcement – BS 4483: 1998. A reinforced solution using Dramix® Steel Fibres from Bekaert.
Embossments
Raised diagonal embossments in opposite directions on each face of the webs of the decking provide the mechanical connection between the steel and the hardened concrete.
References
Engineers are advised to consult SCI/MCRMA Technical Paper 13 ‘Composite Slabs and Beams using Steel Decking: Best Practice for Design and Construction’.
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