POLYSTYRENE FOAM FOR INTERFLOOR OVERLAPPING
REINFORCED CONCRETE BASE
As thermal insulation of interfloor overlappings with a reinforced concrete base, cut boards made of polystyrene foam of the brands PPS10-R, PPS 12-R, PPS13-R, PPS 14-R are used. The laying of heat-insulating plates on a reinforced concrete base is performed between the wooden lags of the frame. For the manufacture of log frames on a reinforced concrete base on an operated floor, wood of the 2nd grade is used. For the manufacture of log frames on a reinforced concrete base on an unexploited ceiling, wood of the 3rd grade is used. Between the logs of the wooden frame, a vapor barrier is laid with gluing the seams and gluing it to the structures protruding above the floor surface. On the vapor barrier between the logs of the wooden frame, heat-insulating plates are laid.
As thermal insulation of interfloor overlappings with a wooden base, cut boards made of polystyrene foam of the brands PPS10-R, PPS12-R, PPS13-R or PPS14-R are used. Wooden supporting and auxiliary structures should be made of softwood sawn timber of the second grade according to GOST 8486 and GOST 11047. The cross-section and step of the beams of the overlapping frame, as well as the thickness of the coating should be taken as calculated taking into account the thickness of the insulation. In this case, the dimensions of lumber according to GOST and their strength characteristics should be taken into account. For the manufacture of supporting wooden beams of interfloor overlappings, wood of the 2nd grade is used, for auxiliary wooden elements - wood of the 3rd grade. A vapor barrier is laid between the beams of the wooden frame with sizing of the joints and gluing it to the structures protruding above the floor surface. On the vapor barrier between the beams of the wooden frame, heat-insulating plates are laid. If the thickness of the heat-insulating layer is greater than the height of the cross-section of the supporting elements of the wooden frame, then additional bars are used, the height of which is equal to the required thickness of the additional thermal insulation. In this case, the bars are nailed to the frame beams in the perpendicular direction, which gives additional rigidity and stability to the frame. On non-operating interfloor overlappings, a protective layer of fiberglass with running tracks from continuous flooring is laid on a heat-insulating layer for maintenance of equipment. Running tracks are arranged so that the load is transferred to the bearing base. On operated floors between the beams or logs of the frame, a subfloor is laid, which serves as the basis for the finish.