Flashcards in Fire rated glazing and glazing installation Deck (24)
higher impact resistance than wire glass.
low expansion coefficient.
not all meet safety glazing req’s.
max 30 min.
cannot pass hose-stream test,
does meet impact safety standards.
special, tempered fire protective glass
3-hr rating for ≤100 sqft.
1-hr rating for ≤1296 sqft.
when fire, gel foams, turning opaque.
depending thickness / number glass panels used.
restriction on max size of lites,
and frame type.
2 or 3 layer tempered glass w clear polymer gel between
traditional method of glass install
held temporarily w glaziers points (small triangles of metal),
and face putty glass in place.
semi-rigid, formed material,
placed between frame and the glass.
req’d most installations.
removable pieces of framing,
allow install and easy replace.
rigid strips of neoprene designed to hold glass.
used in concrete reglet, metal frame.
after glass inserted,
compression strip forced into slot, tightens grip on the glass.
structural glazing gaskets
semirigid neoprene or other elastomeric mat’l.
prevent direct contact of glass/frame.
allow expansion of both.
face dimension and the bite.
wind causes deflection, pulling partially out of frame.
must have sufficient bite to accomodate.
glass supported top and bottom,
edges butt jointed and sealed w silicon sealant.
frameless glazing system:
v + h framing are entirely interior,
glass is attached w silicon sealant.
3 major regulated situations for glazing
sizing for wind loading:
thickness of glass depends size of unit and wind loading.
basics are given for float glass,
and adjustment factors type depending. ex.
ex. 4.00 tempered,
two classifications for limitation in fire-rated assemblies:
must have 45 min rating, limited to 1-hr partitions,
or fire barriers separating occupancies/incidental use areas.
limit __% area of common wall w/in room using the glazing.
individual lights cannot exceed
or 54” in one dimension.
meets req’s for 45-min rating w/o specific test
¼” wire glass
has been tested as part of a fire-resistance-rated wall,
according to ASTM E-119.
up to 1.5hrs, glazing must have same rating as the partition.
no size limitations.