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Mixed Concrete Wood Floor Beams Nº88 102.559-7 PATENT PARIS WEST CONSTRUTION technical Opinion of the CSTB 3/05-443 Golden pyramid to BATIMAT Exhibition. Apparent wooden beams No resumption in under face Variety of formworks Wide possibilities of spacings (up to 1,2m) COST Realization of the ceiling and the floor in the same operation Matches the most demanding markets. Cf tables Total admissible loads on floor, except proper weight of the floor.The beams are used as supports of a reinforced concrete compression slab on the spot cast.The connection wood - concrete is done by means of metallic cylinders Distributed on the upper face of the beam. DEFINITION Glued solid wood in Spruce or Douglas Anti-termite treatment - IF class 2 Metallic connectors assembled - steel tube according to process patented NR ° 88102559-7 (CSTB 3/05 - 443) Sealing strip (to be positioned in the slotting) Methodology of patented installation Sizes of assemblies on estimate (twinned beams, slotting, bandages of hoppers…). PRACTICAL Simplicity and speed of implementation Light materials No propping up ( see the table) Standard beams, ideal for housing PERFORMANCE Overloads : up to 4kN/m2 Up to 6,5m of span between supports Soundproofing Compatible with in or underfloor heating INSTALLATION: The following recommendations are based on the experience of the construction industry. Thus, COSYLVA does not take responsibility for the supporting structure in relation with the implementation of the mixed-concrete wood floor. 1) To measure the length (L) between supports : a) When the beams are fixed on the supports, the length of the beams is equal to (L) - 10 mm = (L1) b) In case beams are built into the wall, the length of beams is equal to (L) + 70 mm (minimum) on each end (support) = (L1) 2) To trace and cut : (if needed) beams at length (L1). 3) Any connecting tubes located within 150 mm from the end of a beam should be removed. 4) Space beams in accordance with the span/spacing table. The beams can be fixed in the following ways : a) Face fixed hangers b) On hard wall shoulder c) Slotted beam hangers d) Timber ledger fixed to face of wall e) Embedding in wall 5) Formwork fixing: nail/screw fixings are dependant on the decking materials to be used and the spacing of beams. Values are given in table 5. A double sided self adhesive sealing strip is provided for fixing inside the grooves of the beams. 6) Propping up:CAUTION: the selected panels should be capable of supporting a maximum uniformly distributed load of 2 kN/m2. 7) Overlap the polythene barrier to ensure a proposer seal.8) Place the mesh reinforcement on suitable spacers to ensure complete distribution of the concrete. 9) Cast the concrete slab in accordance with the instructions provided. Compatible with all underfloor heating , acoustic and thermic products 10) Spaces – stair and ligth wells, heart space, Acceptable overloads on finished floor: 400 DaN/M 2 Own weight of the floor: 180 DaN/M 2 (approximately according to distances between centres) Compatibility: cancel, heating on the ground, etc PACKING : Lengths in 0.5 lm to 0.5 lm, from 3.5 ml up to 6.5ml beam - availability on stock Beams piled up on flat, with connectors face to face in staggered rows, with 5 faces wrapping. Pieces for stair wells: 0.9 m with extremity slottings. Packing per unit Principle sketch: Fixings: Mount hangers/Face fixed hangers Slotted beam hangers Embedding in wall On hard wall shoulder On timber ledger Metallic connector Solid glued beams 120x220mm Standard formwork Reinforced concrete compression slab in 7cm thickness.Metallic mesh
COSYLVA - Route de Bénévent - 23400 Bourganeuf - France
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