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High thermo-acoustic performance structural floor or roof with Jendy JOSS® system with metal frames, upper covering OSB panels and insulation in rock wool, for a total thickness of 237mm. The structure consists of a frame of galvanized steel, 1.5 mm thick section 50-200-50mm places to 400mm wheelbase; thickness, pitch and height of the profiles as resulting from specific structural calculations. The profiles are secured with vertical warping brackets or inserted within the 40-200-40mm section guides. The top surface of the floor will be covered with a double layer of OSB 3 sheets, normate for static functions and the bracing of the horizontal plane, 12mm thick, screwed to the metal with screws VT4.2*32 galvanized and drilling, crossed and with staggered joints cutlery. The floor lower side will instead be coated with a plasterboard plate of 13mm thickness and 2800-3000x1200mm size screwed to the steel structure with suitable self-threading screws fosfate VT3.5*25. The plasterboard will be finished as a rule with plastering of gypsum-based joint with interposed retina or microperforated tape, plastering of the head of the screws, angles, etc ... In the gap will be inserted one of high density rock wool of 160mm thick 70 kg/m³ with acoustic insulation function. In case of roof will be placed on the upper side a further insulating layer to achieve the desired thermal values and suitable waterproofing of the surface; if it’s an intermediate floor it must be realized the screed plant, possibly dry, with traditional subflooring pad and subsequent paving as usual. Including static design of the floor, exclude the reviewing of the existing part. Vacuum computation for full under 5mq.
