1. Insulation placed between
two layers of noncombustible materials without an intervening
airspace shall be allowed to have a flame spread index
of not more than 100.
2. Insulation installed between
a finished floor and solid decking without intervening
airspace shall be allowed to have a flame spread index
of not more than 200.
3. Foam plastics in accordance
with Chapter 26.
4. Roof coverings that have
an A, B or C classification.
5. Interior floor finish
and interior finish, trim and millwork such as doors,
door frames, window sashes and frames.
6. Where not installed over
15 feet (4572 mm) above grade, show windows, nailing or
furring strips and wooden bulkheads below show windows,
including their frames, aprons and show cases.
7. Finished flooring applied
directly to the floor slab or to wood sleepers that are
fire blocked in accordance with Section
717.2.7.
8. Partitions dividing portions
of stores, offices or similar places occupied by one tenant
only and that do not establish a corridor serving an occupant
load of 30 or more shall be permitted to be constructed
of fire-retardant- treated wood, 1-hour fire-resistance-rated
construction or of wood panels or similar light construction
up to 6 feet (1829 mm) in height.
9. Stages and platforms constructed
in accordance with Sections 410.3
and 410.4, respectively.
10. Combustible exterior
wall coverings, balconies and similar projections and
bay or oriel windows in accordance with Chapter 14.
11. Blocking such as for
handrails, millwork, cabinets and window and door frames.
12. Light-transmitting plastics
as permitted by Chapter 26.
13. Mastics and caulking
materials applied to provide flexible seals between components
of exterior wall construction.
14. Exterior plastic veneer
installed in accordance with Section
2605.2.
15. Nailing or furring strips
as permitted by Section 803.4.
16. Heavy timber as permitted
by Note d to Table 601 and
Sections 602.4.7 and 1406.3.
17. Aggregates, component
materials and admixtures as permitted by Section
703.2.2.
18. Sprayed fire-resistant
materials and intumescent and mastic fire-resistant coatings,
determined on the basis of fire-resistance tests in accordance
with Section 703.2 and installed
in accordance with Section 1704.10
and 1704.11, respectively.
19. Materials used to protect
penetrations in fire-resistance- rated assemblies in accordance
with Section 712.
20. Materials used to protect
joints in fire-resistance-rated assemblies in accordance
with Section 713.
21 Materials allowed in the
concealed spaces of buildings of Type I and II construction
in accordance with Section 717.5.
22. Materials exposed within
plenums complying with Section 602
of the International Mechanical Code.
