BC 5 Flashcards
interior finishes
interior linings
plaster
gypsum wallboard
wood panelling
ceiling tiles
plastic
fiberboard
wall covering including vegetation draperies and decorations
interior finishes are considered trim
they do not exceed ten percent of the wall or ceiling
distributed throughout the space
do not constitute a large continuous surface
surface burning characteristics
composition, orientation and thickness of material
ventilation
shape and size of compartment
finish material
thin surface treatments
buildings codes usually exclude reference to surface treatments such as paint and wallpaper that are no thicker than 1/28 inch
types of fire retardant coatings for interior finishes
intumescent coatings
mastics
gas firing paints
cementation and mineral fiber coatings
intumescent paint
expands upon exposure to heat and creates a thick puffy coating that insulates the wood surface from heat and excludes oxygen
mastic coating
form a thick noncombustible coating over the surface of wood
ASTME 84
uses the Steiner tunnel test
standard test to measure the surface burning characteristics of interior finish materials
ASTME 84 UL 723 test for surface burning characteristics of building materials
the Steiner tunnel test
the tunnel test
flame spread rating
established by ASTME 84 compares the surface flammability
smoke developed ratings
red oak is standard at 100
max score of 450
does not detect or measure CO or heat irritation or toxicity or volitility
onlu visual obscuration
NFPA 286
standard methods of fire tests for evaluating contribution of wall and ceiling interior finish to room fire growth
tests things that may not stay in place like things that will drip
tested on ceiling and walls
NFPA 265
STandard methods for fire test for evaluating room fire growth contribution of textile or expanded vinyl wall coverings on full height panels and walls
tested on walls
carpet walls
any kind of rated assembly used as a fire wall must match the listed parameters of the assembly in order to be compliant
parapet walls
prevent fire spread on roofs. could be between 18-36 inches
fire walls
four hour fire walls must be constructed of masonry or concrete
walls can be 2,3,4 hours
in structures as close as 18 inches apart rated construction may take the place of the clearance space to prevent fire spread
fire partitions
do not extend full length
interior
encoring an exit corridor need 1 hour rating
enclosure walls
prevents fire spread vertically through stairwells, stairwell exit passage ways
elevators and pipe chases
need 1-2 hour rating
less thean 4 stories stairs need 1 hour
curtain walls
came with steel frame construction. separates interior from exterior
resist environmental loads
control heat loss
limit noise transmission
limit solar radiation
often non load bearing
some have no fire resistance such as those made of aluminum and glass
fire doors
rated in increments of 20 minutes to 4 hours
1/2and 1/3 hour doors are rated for smoke barriers and into corridors
rated in hours and letters:
Class A- openings in fire walls
Class B- Openings in vertical shafts and openings in 2 hour rated partitions
Class C- Openings between rooms and corridors having a fire resistive rating of 1 hour or less
Class D- Openings in exterior walls subject to severe fire exposure from outside of the building
Class E- openings in exterior walls subject to moderate or light exposure from the outside
fire doors
codes require 3-4 hour rating in doors in a wall with a 2 hour rating
doors rated 1.5 hours required for 2 hour vertical enclosures
1 hour doors for 1 hour vertical shafts and exit enclosures
rolling overhead doors
along corridors to protect convenience openings
protect an opening in a fire wall in industrial occupancy
one or both sides of a wall opening
opening in a wall that separates buildings
made of interlocking steel slats, releasing device, speed governor, counterbalance mechanism, wall guides
closes when fusible link melts or smoke detector releases hold open device
horizontal sliding doors
used in older industrial buildings
swinging fire doors
protect stairwells
ratings from 20 minutes to 3 hours
special fire doors
horizontally sliding accordion doors or folding doors
motor driven and require electricity
