PREFABRICATED BALCONY SLAB

Abstract: A prefabricated balcony slab has a supporting frame (1) which supports both a floor member (2) of aluminium and a plate (4) of fire-resistant material which is disposed underneath the floor member. At least at parts of its circumference, the supporting frame (1) has a profile substantially in the form of an E between the two upper flanges of which the floor member (2) is inserted and on the lower flange of which the plate (4) is resting.

Description: PREFABRICATED BALCONY SLAB The present invention relates to a prefabricat¬ ed balcony slab of the type having a supporting frame which supports both a floor member, preferably made of a corrosion-resistant material, such as aluminium, and a plate, preferably made of a fire-resistant ma¬ terial, which is disposed underneath said floor mem¬ ber. The present invention has for its object to pro¬ vide a balcony slab of the above type having a support- ing frame which is so constructed that the balcony slab is considerably easier to mount than previously known balcony slabs of this type. According to the invention, this object is achiev¬ ed by means of a prefabricated balcony slab having a supporting frame which supports both a floor member, preferably made of a corrosion-resistant material, ' such as aluminium, and a plate, preferably made of a fire- resistant material, which is disposed underneath said floor member, the balcony slab being characterized in that the supporting frame, at least at parts of its circumference, has a profile substantially in the form of an E between the two upper flanges of which the floor member is inserted and on the lower flange of which the plate is resting. In a preferred embodiment of the invention, the E-profile of the supporting frame is made up of two U-profiles, namely an outer U-profile and a smaller, inner U-profile which is so mounted in the outer U- profile that one of its flanges is resting on the lower flange of the outer U-profile and its other flange forms the central flange of said E. The inner U-profile preferably is an aluminium profile. In another preferred embodiment, the supporting frame carries an insulating layer between its two lower flanges. The invention will now be described in greater detail hereinbelow in an embodiment with reference to the accompanying drawing which is a sectional view of part of a prefabricated balcony slab according to the present invention. The balcony slab illustrated in the drawing has a rectangular supporting frame 1 consisting of a cir¬ cumferential outer U-profile la which at two opposite sides of the rectangle defined by the supporting frame 1 has an inner U-profile lb. The inner U-profile lb has a shorter web and shorter flanges than the outer U-profile la and is so mounted in the outer U-pro¬ file that the outer side of its web engages the inner side of the web of the outer U-profile and the outer side of its lower flange engages the inner side of the lower flange of the outer U-profile. The U-profiles la and lb together form a profile which is substan¬ tially in the form of an E. The inner U-profile lb is preferably made of aluminium while the outer U- profile la is preferably made of stainless steel. The supporting frame 1 has means (not shown) for mounting the balcony slab on the wall of a build¬ ing. The supporting frame 1 carries a floor member 2 which is composed of a plurality of juxtaposed alu- mium profiles, the ends of which are disposed between the upper flanges of the two U-profiles la and lb. Between the two flanges of the inner U-profile lb, the supporting frame 1 carries a sound-absorbing layer 3 of mineral wool and, resting on the lower flange of the inner U-profile lb, a plate 4 of fire-resistant material, such as steel. A bracket 5 integrally formed with the inner U-profile lb projects from the inner side of the web of the inner U-profile and is arranged, together with the upper flange of the inner U-profile, to non-rotatably hold a number of nuts 6. The webs of the two U-profiles la and lb have through holes 7 registering with the holes of the nuts 6. For mounting a balcony slab according to the present invention, the following steps are taken. Three U-profile lengths, corresponding to the outer U-profile la, are assembled, e.g. by means of angle irons and bolts, so as to form a rectangle which is open at one of its short sides. This part rectangle or partial frame is placed upside down on a base struc¬ ture, i.e. such that the upper flange of the outer U-profile la, as seen in the drawing, will be resting with its outer side against the base structure. Aluminium profiles turned upside down are disposed side by side in the partial frame to form the floor member 2. One U-profile length, corresponding to the inner U-profile lb, is inserted at each long side of the partial frame between the floor member 2 and the upper flange of the outer U-profile la, i.e. when turned upside down and lower flange as seen in the drawing. The aluminium profiles forming the floor member 2 suitably have grooves at their ends for im¬ proved engagement with the flanges of the U-profiles la and lb. The sound-absorbing layer 3 is placed between the flanges of the inner U-profile lb, whereupon the plate 4 is applied. The open rectangle or partial frame is thereafter closed by mounting a U-profile length, corresponding to the outer U-profile la, e.g. by means of angle irons and bolts. One bolt (not shown) which may extend through an attachment for a post for the subsequent mounting of a balcony parapet is inserted through each hole 7 and screwed into the respective nut 6. The bracket 5 is yieldable such that when a bolt is screwed in, the bracket can be urged, if required, into the layer 3 by the end of the bolt.

Claims: CLAIMS 1. Prefabricated balcony slab having a supporting frame (1) which supports both a floor member (2), pre¬ ferably made of a corrosion-resistant material, such as aluminium, and a plate (4), preferably made of a fire resistant material, which is disposed under¬ neath said floor member, c h a r a c t e r i z e d in that the supporting frame (1) , at least at parts of its circumference, has a profile substantially in the form of an E between the two upper flanges of which the floor member (2) is inserted and on the lower flange of which the plate (4) is resting. 2. Prefabricated balcony slab as claimed in claim 1, c h a r a c t e r i z e d in that the E-profile of the supporting frame (1) is made up of two U-profiles (la, lb), namely an outer U-profile (la) and a smaller, inner U-profile (lb) which is " so mounted in the outer U-profile that one of its flanges is resting on the lower flange of the outer U-profile and its other flange forms the central flange of said E. 3. Prefabricated balcony slab as claimed in claim 2, c h a r a c t e r i z e d in that the inner U-profile (lb) is an aluminium profile. 4. Prefabricated balcony slab as claimed in any one of claims 1-3, c h a r a c t e r i z e d in that the supporting frame (1) carries an insulating layer (3) between its two lower flanges.

Inventors: WICKELL THOMAS, WICKELL, THOMAS
Applicants: GILLMAN MARKNADSKONSULT HB
Application year: 1985
Main classification: E04B1
IPC codes: E04B1