Term
| what is a passive fire system |
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Definition
| passive systems focus on prohibiting and containing fires |
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Term
| which fire system is also referred to as a prevention system - passive or active? |
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Definition
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Term
| there are 4 elements that once put in place are considered passive and nothing else has to occur for them to be part of the control of a fire - name them |
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Definition
1. fire and smoke barriers and partitions (walls, floors, ceilings)
2. opening protectives (windows, doors)
3. through penetration protectives (firestops, draftstops, dampers)
4. finishes and furniture (wall coverings, finish floor materials, upholstered pieces, mattresses, etc. |
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Term
| what 3 systems are part of an active system |
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Definition
1. detection system
2. extinguishing and suppression system
3. emergency lighting |
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Term
| what is an exiting system |
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Definition
| these are the elements of a space or building that assist and direct occupants to a place of safety |
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Term
| what controls the fire resistance rating of a floor/ceiling assembly |
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Definition
| construction of the building and the walls that surround |
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Term
| do fire protected doors have to have an automatic closing device |
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Definition
| no - most must have have closing device, but not necessarily auto. |
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Term
| what is through penetration protection |
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Definition
| a system or assembly installed in or around a thru penetration to resist the passage of flame, heat and hot gases for a specified period of time; includes firestops, draftstops, and dampers |
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Term
| what is a smokestop door and can it be used as a fire protected door |
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Definition
| no - can't be used as a fire protected door because it has to go thru different tests AND this door is designed to close tightly and inhibit passage of smoke, is typically connected to the smoke detection and standby power system and is normally found in a vertical shaft |
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Term
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Definition
| are building elements that have a fire resistance rating and are used to separate specific areas into compartments within a building |
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Term
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Definition
| it is used to prevent the spread of fire and is especially important in high-rise and institutional buildings |
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Term
| is a fire barrier allowed to terminate at a floor/ceiling assembly? |
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Definition
| NOT typically unless the rating of the assembly is equal to that of the fire barrier |
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Term
| is the top of a fire partition allowed to terminate at a nonrated floor/ceiling assembly and if so where does it typically occur |
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Definition
| yes - it is allowed to terminate as required by the IBC and this is typicaly of an exit access corridor |
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Term
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Definition
| most common fire rating is 1 hour but depends on occupancy and also depending on the code - they are either fire barriers or fire partitions |
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Term
| what does a door assembly consist of |
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Definition
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Term
| what can a smoke barrier consist of |
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Definition
first of all - this is part of the PASSIVE fire system
and the can consist of a wall assembly or a full enclosure |
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Term
| what is the typical fire rating of a tenant separation wall |
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Definition
| this wall - also called a demising wall has typical fire rating of 1 hour |
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Term
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Definition
| they are a type of through penetration protection system that is required in fire and smoke barriers |
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Term
| there are 2 ratings for firestops - what are they |
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Definition
f rating - based on the humber of hours the firestop resists flame and hot gases, its hose stream perforamnce and whether it remains in the opening
t rating is stricter and includes the f rating criteria plus a maximum temp riser |
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Term
| what does a firestop have to have? |
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Definition
first of all - purpose is to restrict movement of fire and hot gases thru openings made in the fire-resistance rated walls and flr/clg or roof/clg assemblies.
they may be required to limit the transfer of heat as well
they seal and protect any opening created by penetrations - plumbing pipes, electrical, hvac, communications, etc.
they may also be reqd at the intersection of walls and ceilings and at seams in gypsum board in rated walls |
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Term
| what can be used to create firestops and how are they devided |
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Definition
noncombustible materials - fire rated caulk, silicone foam, mortar, mineral wool, fire resistive board, wire mesh, collars and clamp bands
they are then divided into 2 groups - systems and devices - systems are constructed in the field - device is factory built and typically installed as part of the thru penetration |
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Term
what are the required door assembly ratings for the following:
corridors
smoke barriers
fire partitions
exit passageways
exit stairs
occupancy separations
exit stairs |
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Definition
corridors - 20 mins
smoke barriers - 20 mins
fire partitions - 3/4 hr
exit passageways - 1 hr
exit stairs - 1 hr
occupancy separations - 3/4 hr
exit stairs - 1.5 hrs |
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Term
a door assembly rated for 45 mins and equipped with a sidelight is typically used in what type of wall?
a. fire wall separating 2 bldgs (in a 3 hr wall)
b. non-rated interior door (in a partition wall)
c. entry door to a fire stair (in a 2 hr wall)
d. an access door (1 hr wall) |
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Definition
| d. access door - 1 hr - appropriate door assembly for exit access and exit way enclosures for a 1 hr rate partition. glass lite allowed is 1296 sq inches w/ a max width and ht of 54" |
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Term
in commercial construction, a standard gypsum board partition can be constructed to meet a 1 hr fire rating or for sound control if:
a. the partition is constructed from flr to clg
b.the partition is constructed from flr slab to structural clg
c. the insulation in the wall is urethane foam
d. the gypsum bd is 1/2" thick |
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Definition
| b. partition is constructed from flr slab to structural clg - this will prevent sound transmission from one space to another |
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Term
what combination of combustible and non-combustible trim and decorations are permissible in occupancies A, E, I, R-1, and R-2?
a. noncombustible 10%, combustible 5%
b. noncombustible unlimited, combustible 10%
c. noncombustible 20%, combustible 20%
d. noncombustible 10%, combustible 30% |
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Definition
| b. noncomb unlimited, comb 10% - the IBC code notes that combustible decorative material should not exceed 10% of the total areas of both walls and ceilings when added together. Non-combustible is unlimited. |
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