Static structures (e.g. – buildings) – Multiroom or level – Curtain-wall; i.e. – panel attached outside floor or beam
Patent
1994-11-17
1997-06-03
Friedman, Carl D.
Static structures (e.g., buildings)
Multiroom or level
Curtain-wall; i.e., panel attached outside floor or beam
52508, E04H 100
Patent
active
056343051
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a system and method for cladding building walls, and to prefabricated walls prepared therefrom.
Wall cladding is carried out on buildings to meet a number of design objectives. Provision of durability is the prime requirement when cladding facing walls made of foamed plastic materials or lightweight cement blocks. Improvement of appearance and compliance with local building codes are the requirements when cladding concrete walls. In addition, wall cladding always provides improved thermal and accoustic insulation and weather resistance,
Thus, e.g., U.S. Pat. Nos. 4,070,835, 4,625,481 and 4,866,896 relate to various systems for securing cladding panels to a wall. U.S. Pat. Nos. 3,621,635 and 4,551,958 respectively teach the mounting of an aggregate textured type wall covering panel and a polystyrene foam panel and U.S. Pat. Nos. 4,522,003 and 4,803,821 teach arrangements for attaching tiles to external walls.
Many buildings, even today, are built using simple rectangular slabs as facing blocks, which blocks are anchored and attached to each other by a layer of cement at the rear of and between the edges of the blocks. This system has been found to be dangerously unreliable for high buildings, which tend to sway under pressure from wind and minor earth tremors; the resulting loosening of facing blocks can cause injury or death to persons in the vicinity of such buildings. In Jerusalem, following the highly dangerous fall of a number of facing blocks from clad buildings to pedestrian areas, the municipality has forced the owners of such buildings to take emergency action to secure facing blocks thereto. Such emergency measures are expensive and disruptive of normal activities; it is, of course, far better to properly secure the facing blocks during construction.
Thus, e.g., U.S. Pat. No. 4,987,712 teaches a brick cladding system including a metal strip from which there is punched a plurality of mounting flanges, the mounting flanges receive "brick" tiles which have side slots which receive the mounting flanges in order to secure the tiles to the mounting plate.
The traditional method of cladding buildings in Jerusalem and environs in stone consists of laying a few courses of stone which act as external formwork, and casting a concrete backing. This proceeds at a slow rate and delays the completion of the outside shell, further delaying the trades that follow.
When an existing wall has to be clad, a steel mesh is attached, the mason again lays a few courses, drills holes in each stone and with galvanised wires attaches it to the mesh. Concrete is then poured between stone and wall.
After the stonework is done, a separate operation of cleaning out the joints, sometimes damaging the wire ties, is undertaken and then the joints are caulked.
These antiquated methods have many drawbacks. They are slow, labour-intensive and inefficient and will probably not stand up adequately to lateral dynamic forces, e.g., earthquakes. As it is, there are many incidences of stones becoming dislodged and endangering passersby. Some highrise buildings in Jerusalem have been condemned and a costly mechanical attachment system is called upon to correct the situation.
There is also the problem of water penetration in buildings clad by these methods. There are innumerable buildings built by reputable contractors which suffer from damp walls.
In order to deal with the problem Israel Patent 92433 describes a dry system of cladding which uses stepped interfitting building stones and bridging members as brackets. This system requires individual attachment of each bridging bracket to an associated facing stone and to the wall being faced, an arrangement requiring some skill and consuming considerable time during construction.
Many of the systems mentioned require that the wall to be faced be drilled for purposes of attachment at fixed intervals, typically once or twice for every facing block. This may, however, cause difficulty, as a cast wall may already contain water or drainage piping or electric conduits
REFERENCES:
patent: 3621635 (1971-11-01), De Lange
patent: 4070835 (1978-01-01), Reverend et al.
patent: 4522003 (1985-06-01), Akihama et al.
patent: 4551958 (1985-11-01), Reneault et al.
patent: 4625481 (1986-12-01), Crandell
patent: 4765107 (1988-08-01), Ting
patent: 4765111 (1988-08-01), Osawa
patent: 4803821 (1989-02-01), Funaki
patent: 4866896 (1989-09-01), Shreiner et al.
patent: 4987712 (1991-01-01), Mancuso
Prefabrication and New Building Techniques, Jan. 1954, NA 8480.A1P7 pp. 22-28.
Edwards W. Glenn
Friedman Carl D.
LandOfFree
System for stone cladding of buildings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for stone cladding of buildings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for stone cladding of buildings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-383815