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Encyclopedia > Firestop pillow

Firestop pillows are passive fire protection items, used for firestopping holes in wall or floor assemblies required to have a fire-resistance rating. Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent [1] cable coating. ... A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ...

 Firestop pillow: a passive fire protection product. This particular example consists of 3 layers of rockwool, 2 of which have been sprayed with an intumescent. The layered bundle is then inserted into a plastic bag, which is heatsealed. Other pillows use loose fills, like vermiculite with graphite, with a fibreglass fabric bag. Firestop pillow installations must conform to strict bounding.]
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Firestop pillow: a passive fire protection product. This particular example consists of 3 layers of rockwool, 2 of which have been sprayed with an intumescent. The layered bundle is then inserted into a plastic bag, which is heatsealed. Other pillows use loose fills, like vermiculite with graphite, with a fibreglass fabric bag. Firestop pillow installations must conform to strict bounding.]

Contents

A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ... A pile of pillows A pillow is a type of bedding— a small (and usually soft) support for the head, usually used while sleeping in a bed, or for the body as used on a couch or chair. ... Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent [1] cable coating. ... Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... Plastic covers a range of synthetic or semisynthetic polymerization products. ... Vermiculite is a natural mineral which expands with the application of heat. ... Graphite (named by Abraham Gottlob Werner in 1789, from the Greek γραφειν: to draw/write, for its use in pencils) is one of the allotropes of carbon. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


General Use

The idea is that if there are openings that are subject to frequent cable changes, they can be filled with firestop pillows. The main selling feature is Re-enterability, which is an unquantified and undocumented measure for the ease with which changes can be made to a firestop. For example, adding a cable can be accomplished by manipulating or subtracting pillows. A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ... Pillows redirects here; for information on the Japanese band, see the pillows. ... A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ...

 Firestop pillow sample installation, alongside other firestops, used in passive fire protection of buildings.
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Firestop pillow sample installation, alongside other firestops, used in passive fire protection of buildings.

A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ... A pile of pillows A pillow is a type of bedding— a small (and usually soft) support for the head, usually used while sleeping in a bed, or for the body as used on a couch or chair. ... A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ... Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent [1] cable coating. ... Building is either the act of creating an object assembled from more than one element, or the object itself; see also construction. ...

Technical Issues And Common Misunderstandings

There are three types of firestop pillows:

  • rockwool batts with intumescent resin inside plastic bags

To pass a hose-stream test, which is mandatory for firestops in the US and well-liked in Canada, the openings cannot be very large unless wire mesh is used. One vendor uses heavy-duty grids and claims it is "burglar-proof". However, this mesh is mandatory because without it the pillows would be dislodged by the force from a 30PSI hose-stream test, which is part of the test procedure. Installing firestop pillows correctly is not as easy as one might think or be lead by the literature to believe. One may need to achieve a certain compression rate, which needs to be quantified for each hole. This would entail an accurate calculation of the area of the opening less the area covered by the penetrating items. Then one must factor in the required compression ratio of the pillows to calculate just how many need to be installed. Without this information, there is no evidence of bounding. If the certification listing that is bounding the opening does not mention the compression ratio, using pillows is inadvisable. It stands to reason that one must compress the pillows adequately in order to pass the test. Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... Vermiculite is a natural mineral which expands with the application of heat. ... Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... Graphite (named by Abraham Gottlob Werner in 1789, from the Greek γραφειν: to draw/write, for its use in pencils) is one of the allotropes of carbon. ... Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ... United States may refer to: Places: United States of America SS United States, the fastest ocean liner ever built. ... Area is a physical quantity expressing the size of a part of a surface. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


There are also issues in ensuring pillow coverage between cables. If there is no requirement to install the pillows between the cables, it is imperative that the cables used in the installation match those used for testing, which is unlikely under field conditions. Theoretically, after one calculates the compression rate to determine just how many pillows should be installed, then one has to install the mesh of grating or grid, then the pillows. When one uses the mesh, mechanical fasteners are required, including, anchors, bolts etc. In many cases, the effort required negates the benefits provided by this technology.


The last type of pillow comes from an entrepreneur from Cologne, Germany. This has been private-labelled for other companies all over the world, but it comes from Cologne. The basic material is Bayer Fomox intumescent foam, which can be extruded into various shapes. For countries that use a hose-stream test, the Fomox is re-enforced with intumescent graphite, whereas for those who don't use a hose-stream, this ingredient is omitted. The product is basically intumescent foam rubber. Cologne Cathedral with Hohenzollern Bridge Cologne (German: (help· info) ; Kölsch: Kölle) is Germanys fourth-largest city after Berlin, Hamburg and Munich and is the largest city both in the German Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the largest... Cologne Cathedral with Hohenzollern Bridge Cologne (German: (help· info) ; Kölsch: Kölle) is Germanys fourth-largest city after Berlin, Hamburg and Munich and is the largest city both in the German Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the largest... Bayer AG (German pronunciation BYE-er, in US usually pronounced BAY-er) (NYSE: BAY, TYO: 4863 ) is a German chemical and pharmaceutical company founded in 1863. ... Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... Graphite (named by Abraham Gottlob Werner in 1789, from the Greek γραφειν: to draw/write, for its use in pencils) is one of the allotropes of carbon. ...


Repairs and Maintenance

Like all firestops, bounding drives everything. Unfortunately, pillows may present an opportunity for vandalism if not properly secured. Some vendors refer to firestop pillows as "temporary seals". There is no official definition for such a designation. This merely gives rise to the thought: "Just how long do firestops last anyway?" Others have come up with this concept: "How about if we use firestop pillows DURING construction?" Likewise, this does not typically meet with any commercial success. A firestop is a Passive fire protection system of various components used to seal building joints in order to to restore or increase their fire resistance ratings. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


Smokeproofing

Field installations of firestop pillows do not offer any realistic resistance to air pressure differences or smoke penetration.


The Technical Concept Behind Firestop Pillows

In the case of batt-based firestop pillows with intumescent resin: the intumescent contains hydrates, or chemically bound water. The fire hits the pillow. On the fire side, the plastic bag burns off. The intumescent gets activated and releases the water in the form of vapour or steam. The steam rises and hits the plastic bag interior on the unexposed side. That's where it condenses back to water, which runs back down to cool matters below and thus the cycle keeps going. This really happens. You can see the droplets during the test and the pillows tend to be cool to the touch on the unexposed side. This nifty concept, however, does not negate the installation and bounding issues, which pretty much defeat pillows on a regular basis. The advantage with the batt-based pillows is that proper compression can hold them in, simply through friction - until the "bounce-back" effect has been reduced through frequent use. Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ... Insect trapped in resin. ... Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. ... A girl in a swimming pool Water (from the Old English waeter; c. ... In physical chemistry, and in engineering, steam refers to vaporized water. ... A girl in a swimming pool Water (from the Old English waeter; c. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...


For the fabric bag based pillows, the vermiculite, the fabric bag and the graphite are noncombustible, which is beneficial. The graphite expands but forms no bond with anything around it, unlike the resin-based instumescents. There is also no significant release of chemically bound water. Usually the bags are not entirely filled and are, thus, quite floppy, requiring strung mesh or grid installations just to stay in during normal operations. Vermiculite is a natural mineral which expands with the application of heat. ...


The Fomox-based pillows simply intumesce as they are supposed to do and work quite well, except that proper installations and compression ratios are still not easy to quantify and guarantee.


Older versions of firestop pillows have no intumescent contents at all, which makes it difficult to pass a hose-stream test. They have not been in use for many years. Please wikify (format) this article as suggested in the Guide to layout and the Manual of Style. ...


See also


 
 

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