Static structures (e.g. – buildings) – Irreversibly reactive component
Patent
1989-09-22
1992-03-31
Scherbel, David A.
Static structures (e.g., buildings)
Irreversibly reactive component
52220, 52221, E04C 200
Patent
active
050996258
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a method of partitioning carcase openings in structural walls or ceilings defining fire sections. The invention also relates to a fire-protection cushion suitable for this method. Furthermore, the invention relates to a partition element likewise suitable for this method and prefabricated as a finished part. Finally, the invention also relates to a case, adapted to this method, for producing the soffit of a carcase opening to be partitioned in a structural wall or ceiling defining a fire section.
On accound of building laws and regulations, larger buildings must be subdivided into fire sections. Here, there is the problem that electric cables and supply lines have to be passed through these fire sections and thus the individual fire sections inside the building are connected to one another via these cables and supply lines. But openings in the ceilings and walls defining fire sections are inadmissible for reasons of fire protection. The supply lines and cables and also other pipes to be passed through may only be passed through the walls and ceilings if there is no danger of fire spreading as a result of this or if special precautions have been taken to prevent the spread of fire.
In the event of fire, there is the risk of the insulation on the cables and supply lines as well as on pipes spreading the fire from one room to the other even if it is fire-resistant. A further disadvantage in this respect is that, if electrical or other supply lines are on fire, poisonous combustion gases can be released.
The object of partitioning then is to avoid the spread of fire and smoke from one room into another adjacent room. For technical reasons relating to fire, this partition is a wall or ceiling part, which means that it must have the fire resistance of the wall or ceiling. Thus the partition, just like the rest of the wall or ceiling, must withstand the action of a fire lasting, for example, for 90 or 180 minutes; the increase in temperature relative to the initial temperature must not be greater than 140 degrees on average, but at no measuring point greater than 180 degrees, outside the fire space. Furthermore, no ignitable gases and no smoke must pass through the partitioning.
In buildings where there is a great deal of technical finishing operations, the fire protection regulations, after the end of the carcasing phase, must be observed during the finishing with electric cables and other supply lines. This means that structural parts, such as walls or ceilings, defining fire sections must be designed to be fire-resistant during the finishing phase. During a finishing phase in a plurality of finishing stages it thus has to be ensured that even openings which are only partly laid with supply lines are fire-resistant in their respective finished state; on the other hand, it also has to be ensured that subsequent installation can be carried out, during which further supply lines are to be subsequently passed through the apertures only partly laid with supply lines.
PRIOR ART
In practice, it is known to partition in a fire-resistant manner the apertures present in a carcase in ceilings and walls only during the finishing phase of this building. This is regularly done in a quite expensive manner. Thus so-called partitions have to be made and assembled for apertures in ceilings or walls which are less than 15 cm thick.
The soffits of the openings can also be filled with sheet-steel cases. These cases are adapted in shape to the soffit surface and thus have a planar configuration in the area of the soffit. To prevent the partitioning material, after installation in an aperture, from falling out of this opening again, profiled parts projecting into the opening must be attached either to the soffit of the carcase opening or to the case part representing the supply line. This subsequent installation turns out to be quite difficult, since these parts must not be welded on, for example, in communication facilities, computing centers or the like and there is not sufficient space
REFERENCES:
patent: 3659247 (1972-04-01), Chaney et al.
patent: 4232494 (1981-11-01), Bauch et al.
patent: 4302914 (1981-12-01), Fermvik et al.
patent: 4337603 (1982-07-01), Davidson
Copy of two pages from a German technical dictionary entitled, "Worterbuch der industrielle Technik Baud II", Ernst, Brandstetter Verlag 7985.051014009
Scherbel David A.
Wood Wynn
LandOfFree
Partition wall for openings in building shells, forming fire pro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Partition wall for openings in building shells, forming fire pro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Partition wall for openings in building shells, forming fire pro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2250166