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City, county and states vary with there code requirements for a justifiable answer to ” what is a fire wall”. And exacts are not always given. In a multi-family dwelling these codes will fluctuate as well, depending on what year they were constructed. Ultimately this system of constructing a building that has a definite form of separation is in fact where the fire wall(s) are located, between units of habitable space. Condo’s may have them and some apartment structures may have them as well. Most likely a true fire wall can be noticed from the street the building is on. And knowing how to spot them is the key to a successful venture into managing your CADS. ![attic firewall construction [condo]](http://www.my-diy-blog.com/wp-content/uploads/2010/04/thumbnail-2.jpg "attic firewall construction [condo]")
A one hour wall typically consists of a single layer of 5/8″ drywall [gypsum board] for meeting code requirements. If a building has an attached garage, the the inside of the parking garage area must comply with a minimal fire rating of drywall with any proper electrical components involved. A two hour fire wall may often require a double layer of 5/8″ drywall or sheetrock on the garage side to accomplish this rating. Drywall compressed gypsum is considered to be fire resistant and allows ample time for the UBC safety laws, to extinguish any flames before moving [burning] through to the next area, therefore lessening the damage, it can potentially cause. Are you a CADS manager?
There are two main classifications of fire walls: fire partitions, and true fire walls. To the layperson, the common use of firewalls are to slow down the fire’s ability to spread, also known as a 1 hour rated partition.
There is a further sub-classification of fire walls. A high challenge fire wall is a wall used to separate buildings or subdivide a building with high fire challenge occupancies, having enhanced fire resistance ratings and enhanced appurtenance protection to prevent the spread of fire, and having structural stability.
Portions of structures that are subdivided by fire walls are permitted to be considered separate buildings, in that fire walls have sufficient structural stability to maintain the integrity of the wall in the event of the collapse of the building construction on either side of the wall. Are you a CADS manager? Do you aspire to be?
Fire barrier walls are continuous from an exterior wall to an exterior wall, or from a floor below to a floor or roof above, or from one fire barrier wall to another fire barrier wall, fire wall, or high challenge fire wall having a fire resistance rating of at least equal rating as required for the fire barrier wall. They are continuous through all concealed spaces (e.g., above a ceiling), but are not required to extend through concealed spaces if the construction assembly forming the bottom of the space has a fire resistance rating at least equal of the fire barrier wall.