SE509452C3

SE509452C3 - Trabjael lattice construction for multi-dwelling single purpose with insulation against air and step sound

Info

Publication number: SE509452C3
Application number: SE9702963A
Authority: SE
Inventors: Carl-Gunnar Ekstrand
Original assignee: Ingemansson Tech Ab
Priority date: 1997-08-18
Filing date: 1997-08-18
Publication date: 1999-02-22
Also published as: SE9702963D0; SE9702963L; SE509452C2

Abstract

The construction has a top floor layer (5) with a thickness of 22-30 mm, screwed onto the upper flange (6) of a support beam (4) with an I-shaped cross-section. The beams have a laminate structure obtained by bonding together panels with a thickness of 2-5 mm to give an overall thickness of 40-55 mm and central distance of 600 mm. Beam height is 250-300 mm. Holes are provided at the 100 x 600 mm position to ventilate the pockets of air in between adjacent beams. The lower flanges (7) of the beams are joined together by wooden bolts (9) measuring 22 x 120 mm and having a central distance of 300 mm. The ceiling section is mounted on the underside of the lower beam flanges using elastic damping profiles (3) that receive wooden bolts measuring 45 x 34 mm, which act as an underlay for plasterboard panels.

Description

509 452 Undersída balk är försedd med halv underﬂäns och med ﬂänsens riktning in mot elementets centrum. Balken är försedd med hål i livet ø 100 mm c 600 för att eliminera problemet med den innestängda luftpelaren mellan balkarna. Balkhöj den varierar mellan 250 - 300 mm. Centmrnavstând mellan balkarna är 600 mm. 509 452 The underside beam is provided with half below the edge and with the direction of the edge towards the center of the element. The beam is provided with holes in the waist ø 100 mm c 600 to eliminate the problem of the trapped air column between the beams. Beam height it varies between 250 - 300 mm. Center distance between the beams is 600 mm.

Undersidan av balkama binds samman med träreglar med måtten 22 x 120 mm med centrumavstånd 300 mm. Bj älklaget kan utföras som färdigt element alternativt platsbyggas. Efter montage av lådbj älklaget monteras fóreuädesvis 13 mm golvgips- skiva ovanpå spånskiva. Innan montage av undenak fylls utrymmet mellan balkar med mineralullsisolering i form av skivor eller som lösull.The underside of the beams is connected with wooden joists with the dimensions 22 x 120 mm with a center distance of 300 mm. The floor can be made as a finished element or site-built. After mounting the box floor, a 13 mm floor plasterboard is mounted on top of the chipboard. Before mounting the bottom, the space between the beams is filled with mineral wool insulation in the form of boards or as loose wool.

På undersida lådbj älklaget i balk monteras ljudproﬁl med antalet 3 st lmz.On the underside of the box joist in the beam, a sound profile with the number of 3 lmz is mounted.

I ljudproﬁlen monteras träregel med måtten 45 x 34 mm. I träregel monteras 2 x 13 mm gipsskivor.Wooden studs with the dimensions 45 x 34 mm are mounted in the sound profile. As a rule, 2 x 13 mm gypsum boards are mounted.

Den färdiga bjälklagskonstruktionen har genom laboratoriemätningar och fält- mätningar påvisat att de resonansproblem (övertoner) som normalt förekommer i träbj älklagskonsmlktioner vid ca 80 Hz är ca 30 dB lägre i denna lådkonstruktion vilket kan jämföras med mätresultat från bjälklagskonstmlctioner i homogen betong. Även bjålklagets grundresonans ligger betydligt högre, ca 40 Hz, än motsvarande träbjälklag som finns tillgängliga på marknaden idag där grundresonansen normalt ligger lcring 20 Hz.The finished floor construction has shown through laboratory measurements and field measurements that the resonance problems (harmonics) that normally occur in wooden floor constructions at about 80 Hz are about 30 dB lower in this box construction, which can be compared with measurement results from floor constructions in homogeneous concrete. The basic resonance of the floor is also significantly higher, about 40 Hz, than the corresponding wooden floors that are available on the market today, where the basic resonance is normally around 20 Hz.

Claims

509,452 Claims

Wooden floor construction where the basic structure forms a drawer construction and the suspended ceiling (2) is fixed elastically with sound profiles (3), the drawer construction consisting of an upper flexurally rigid layer which is screw-glued to load-bearing I-beams (4) consisting of veneer and underside beams bonded together with wooden beams . Characterized by the fact that the upper layer (5) has a thickness in the intervals 22 - 30 mm which is glued to the supporting I-beams over the end (6) with a center distance of 600 mm which consists of veneers of spruce or pine which are glued together to a thickness in intervals 40 - 55 mm with a height varying between 250 - 300 mm, underside beams are tied together in under ﬂ äns (7) with wooden joists (9) with the dimensions 22 x 120 mm with center distance 300 mm. The thickness of the veneer varies between 2 - 5 mm. The beams are provided with the upper (6) and lower (7) with the width of the upper 300 mm and the lower flange with the width 195 mm and the thickness 15 - 25 mm. The beams' beams are provided with holes (10) ø 100 mm c 600 mm. The attachment of the suspended ceiling (2) to the underside of the beams consists of an elastic sound profile (3). The horizontal fastening plate of the light projection (3) together with the fastening beams of the bent u-projection for the suspended ceiling bar (8) forms the elastic fastening between the supporting beam and the suspended ceiling. The sound probe (3) is made of 1.2 mm galvanized sheet steel with a height of 30 mm for fastening the rule (8) with the dimensions 45 x 34 mm which together with gypsum boards (2) form the suspended ceiling.