[1- Default – Not related
to structural wind resistance design]
[2- Fire/Life Safety]
[3- Covered in model base code]
SECTION 2514
HIGH-VELOCITY HURRICANE ZONES — LATHING
2514.1 General. Lath shall be gypsum, metal or wire lath,
as set forth herein, and shall conform to the Standard Specification for
Interior Lathing and Furring, ANSI A42.4.
2514.2 Gypsum lath. Gypsum lath shall conform to the
Standard Specification for Gypsum Lath, ASTM C37.
2514.2.1 Gypsum lath shall be nailed to wood supports, at
intervals not to exceed 5 inches (127 mm), with 13-gauge galvanized or blued
nails having 19/64-inch (7.5 mm) diameter flat heads (7.5 mm). Nails shall be
not less than 11/8-inches (29 mm) long for 3/8-inch(9.5 mm) lath nor less than
11/4-inches (32 mm) for 1/2-inch (12.7 mm) lath. Each 16-inch (406 mm) width of
lath shall be secured to each support with not less than five nails except that
where fire-resistive-rated construction is not required, there shall not be
less than four nails.
2514.2.2 Lath shall be secured to horizontal or vertical
metal supports by means of approved special clips.
2514.2.3 The center-to-center spacing of wood supports
shall not exceed 16 inches (406 mm) for 3/8-inch (9.5 mm) gypsum lath and shall
not exceed 24 inches (610 mm) for 1/2-inch (12.7 mm) gypsum lath.
2514.2.4 The center-to-center spacing for gypsum lath
applied to metal studs shall not exceed that set forth herein above for wood
supports except that 3/8-inch (9.5 mm) gypsum lath may be applied to metal
studs spaced 24 inches (610 mm) on centers where a minimum of 3/4-inch (19 mm),
three-coat plaster is applied over the lath.
2514.2.5 Lath shall be applied with face side out and
with the long dimension at right angles to the framing members. Joints shall be
broken in each course, except that end joints may fall on one support when such
joints are covered with 3 inch (76 mm) wide strips of metal lath. Lath shall be
butted together.
2514.2.6 Corner bead and inside angle reinforcing shall
not be required.
2514.2.7 No interior lath shall be applied until the roof
is on and the building is dried in.
2514.3 Metal and wire lath.
2514.3.1 Metal and wire lath and metal accessories
embedded in the plaster shall be galvanized or otherwise rust-resistant by
approved means. Weight tags shall be left on all metal or wire lath until
approved by the building official.
2514.3.2 The weight of metal and wire lath and the
spacing of supports shall conform to the requirements set forth in Table
2514.3.2.
2514.3.3 All metal lath shall be lapped 1 inch (25 mm)
minimum.
2514.3.4 All attachments for securing metal lath, wire
lath and wire fabric to supports shall be spaced not more than 6 inches (152
mm) apart, and side laps shall be secured to supports and be tied between supports
at not to exceed 9 inches (229 mm) intervals.
2514.3.5 Metal and wire lath shall be attached to
vertical wood supports with the equivalent of 4d galvanized or blue common
nails driven to a penetration of at least 3/4 inch (19 mm) and bent over to engage
not less than three strands of lath. Metal and wire lath shall be attached to
ceiling joists or other horizontal wood supports with the equivalent of No.
11-gauge, barbed, galvanized or blued nails 11/2 inches (38 mm) long having a
head not less than 3/8 inch (9.5 mm) in diameter.
2514.3.6 Metal and wire lath shall be attached to
horizontal and vertical metal supports with the equivalent of No. 8 galvanized
sheet-metal screws.
2514.4 Nonbearing lath and plaster partitions.
2514.4.1 Where reinforced plaster or pneumatically placed
plaster partitions are used, they shall have vertical steel or iron channels
with a depth of not less than one-third of the thickness of the partition and
spaced not more than 24 inches (610 mm) on centers. The thickness of metal in
the channels shall not be less than 16 U.S. standard gauge or light gauge steel
studs.
2514.4.2 Hollow nonbearing partitions of reinforced
plaster or pneumatically placed plaster shall have a shell thickness of not
less than 3/4 inch (19 mm).
2514.4.3 Metal reinforcing shall be as set forth in Table
2514.3.2, and gypsum lath shall not be less than 3/8 inch (9.5 mm) in
thickness. The minimum thickness of metal lath and plaster partitions shall be
not less than 2 inches (51 mm) or 1/84 of the distance between supports.
2514.5 Suspended and furred plaster ceilings.
2514.5.1 General. Suspended or furred plaster ceilings
shall be designed and constructed as set forth herein.
2514.5.2 Main runners. Main runners or carriers shall be
rolled steel channels not less than the sizes and weights set forth in Table
2514.5.2.
A main runner shall be located not more than 6 inches
(152 mm) from parallel walls to support the ends of cross furring. The ends of
main runners at walls shall be supported by hangers located not more than 12
inches (305 mm) from such ends. Splices in main runners shall be lapped 12
inches (305 mm) and tied, each end, with double loops of No. 16-gauge wire.
2514.5.3 Cross furring. Cross furring, or spacers, for
various spacing of main runners or other supports shall be not less than as set
forth in Table 2514.5.3.
2514.5.3.1 Cross furring shall be securely saddle-tied to
the main runners by not less than two strands of No. 16 W and M gauge
galvanized wire or equivalent approved attachments. Cross furring shall be
attached to joists or beams with double No. 14 W and M gauge galvanized wire or
equivalent approved attachments.
Splices in cross furring shall be lapped 8 inches (203
mm) and tied, each end, with double loops of No. 16-gauge wire.
2514.5.4 Hangers. Hangers supporting suspended ceilings
shall be not less than as set forth in Table 2514.5.4.
TABLE 2514.3.2 WEIGHTS OF METAL AND
WIRE LATH(*)
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TABLE
2514.5.2 SPANS AND SPACING OF MAIN RUNNERS
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TABLE
2514.5.2 SPANS AND SPACING OF MAIN RUNNERS
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TABLE
2514.5.4 HANGERS SUPPORTING SUSPENDED CEILINGS
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2514.5.4.1 Hangers shall be saddle-tied or wrapped around
main runners to develop the full strength of the hangers. Hangers shall be
fastened to or embedded in the structural framing, masonry or concrete. Lower
ends of flat-strap hangers shall be bolted with 3/8 inch (9.5 mm) bolts to
runner channels or bent tightly around corners and bolted to the main part of
the hanger. Where the area of a plastered ceiling exceeds 100 square feet (93
m2), suitable methods to resist uplift forces shall be provided for each 64
square feet (6 m2) of ceiling.
[1- Default – Not related to structural wind resistance design]
[3- Covered in model base code]
SECTION 2515
HIGH-VELOCITY HURRICANE ZONES — PLASTER
2515.1 General.
2515.1.1 Gypsum plastering shall conform to the Standard
Specification for Gypsum Plastering, ANSI A42.1.
2515.1.2 Plastering with gypsum, hardwall, lime or cement
plaster shall be three-coat work when applied over metal and wire lath and
shall be not less than two-coat work when applied over gypsum lath or gypsum
block.
2515.1.3 Portland cement plaster shall not be applied
directly to gypsum lath.
2515.1.4 In no case shall a brush coat be accepted as a
required coat where three-coat work is required by this section.
2515.1.5 Grounds shall be installed to provide for the
thickness of plaster, as set forth in Table 2515.1.5, as measured from the face
of the lath.
TABLE 2515.1.5
TABLE 2515.1.5 REQUIRED THICKNESS OF INTERIOR PLASTER
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2515.1.6 If monolithic-concrete ceiling surfaces require
more than 3/8 inch (9.5 mm) of plaster to produce desired lines or surfaces,
metal lath or wire lath shall be attached thereto; except that special bonding
agents approved by the building official may be used.
2515.1.7 The building official may require test holes to
be made for the purpose of determining the thickness of plaster.
2515.2 Materials.
2515.2.1 Aggregates.
2515.2.1.1 Inorganic aggregates used for plaster and stucco
shall conform to the Standard Specification for Inorganic Aggregates for Use In
Gypsum Plaster, ASTM C 35, except that graduation of locally produced sand
shall be such that the fineness modulus is between 1.20 and 2.35.
2515.2.1.2 Aggregates shall be quarried or washed in
fresh water and shall contain not more than 1/20 of one percent salt, by
weight.
2515.2.2 Gypsum. Gypsum plaster shall conform to the
Standard Specification for Gypsum Plaster, ASTM C 28.
2515.2.3 Lime. Lime shall conform to the Standard
Specification for Quicklime for Structural Purposes, ASTM C 5, and the Standard
Specification for Special Finish Hydrated Lime, ASTM C 206.
2515.2.4 Keene's cement. Keene's cement shall conform to
the Standard Specification for Keene's Cement, ASTM C 61.
2515.2.5 Portland cement.
2515.2.5.1 Portland cement shall conform to the Standard
Specification for Portland Cement, ASTM C 150.
2515.2.5.2 Approved types of plasticity agents may be
added to cement in the manufacturing process or when mixing the plaster, but in
no case shall the amount of the plasticity agent exceed 10 percent of the
volume of cement in the plaster mixture.
2515.2.6 Masonry cement. Masonry cement shall be Type II
and shall conform to the Standard Specification for Masonry Cement, ASTM C 91.
2515.3 Proportioning and mixing.
2515.3.1 Base coats. The proportions of sand, vermiculite
or perlite to 100 pounds (45.4 kg) of gypsum neat plaster shall not exceed the
requirements in this section.
2515.3.1.1 Gypsum or hardwall plaster. Gypsum or hardwall
plaster shall be proportioned in accordance with Section 2515.3.1.1.
2515.3.1.2 Wood-fiber gypsum plaster. Wood-fiber gypsum
plaster for use on all types of lath shall be mixed with water only and shall
be mixed in the proportion of one part of plaster to one part of sand, by
weight, for use on masonry.
2515.3.1.3 Ready mixed plaster. Gypsum ready-mixed
plaster shall be in the proportion of 100 pounds (45.4 kg) of gypsum neat
plaster to not more than 250 pounds (113 kg) of sand; or when vermiculite or
perlite is used as an aggregate, the proportions shall be 100 pounds (45.4 kg)
of gypsum neat plaster to not more than 21/2 cubic feet (0.07 m3) vermiculite
or perlite.
2515.3.1.4 Portland cement plaster. For three-coat work,
the first two coats shall be required for the first two coats of exterior
stucco (see Section 2516).
2515.3.1.5 Masonry cement plaster. For two- or three-coat
work, all work shall be set forth in Section 2515.
2515.3.2 Finish coats for gypsum or lime plaster. The
finish coats shall be mixed and proportioned in accordance with this section.
2515.3.2.1 Smooth white finish, mixed in the proportion
of not less than one part gypsum gaging plaster to three parts lime putty, by
volume, or an approved prepared gypsum trowel finish.
2515.3.2.2 Sand-float finish, mixed in the proportion of
one-half part of Keene's cement to two parts of lime putty and not more than
four and one-half parts of sand, by volume, or an approved gypsum sand-float
finish.
2515.3.2.3 Keene's cement finish, mixed in the proportion
of three parts Keene's cement to one part lime putty, by volume.
2515.3.2.4 Lime sand-float finish, mixed in the
proportion of three parts lime putty to three parts sand, by volume.
2515.3.2.5 Finish coat for perlite or vermiculite
aggregate plasters, mixed in the proportion of 1 cubic foot (28 339 cc) of
aggregate to 100 pound (45 kg) of unfibered gypsum plaster, or mixed according
to manufacturer's specifications.
2515.3.3 Finish coat for Portland cement plaster. Finish
coats for interior Portland cement plaster shall be one of the following:
1. As
required for the third coat of exterior stucco. See Section 2413.
2. A
gaged cement plaster mixed in proportion of one part Portland cement to not more
than 15 percent lime putty and not more than four parts of sand, by volume.
2515.3.4 Finish coat for masonry cement plaster. Finish
coat for masonry cement plaster shall be as set forth in Section 2515.4.2.3.
2515.4 Application.
2515.4.1 Base coats.
2515.4.1.1 Gypsum plaster. The scratch coat shall be
applied with sufficient material and pressure to form a full key or bond.
2515.4.1.1.1 For two-coat work it shall be doubled back
to bring the plaster out to grounds and straightened to a true surface and left
rough to receive the finish coat.
2515.4.1.1.2 For three-coat work, the scratch (first)
coat shall be scratched to a rough surface. The brown (second) coat shall be
applied after the scratch coat has set firm and hard, brought out to grounds,
straightened to a true surface with rod and darby and left rough, ready to
receive the finish (third) coat.
TABLE 2515.3.1.1 GYPSUM AND HARDWALL PLASTER
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2515.4.1.1.3 The finish coat shall be applied to a
practically dry base coat or to a thoroughly dry base coat which has been
evenly wetted by brushing or spraying. The use of excessive water shall be
avoided in the application of all types of finish coat plastering.
2515.4.1.2 Portland cement plaster. The first two coats
shall be as required for the first two coats of exterior stucco, except that
the interval between the first and second coats shall be not less than 24
hours.
2515.4.1.3 Masonry cement plaster. Where masonry cement
is the only cementitious material, the second coat may be applied to the base
coat as soon as the base coat has attained sufficient strength and rigidity to
support the second (finish) coat.
2515.4.2 Finish.
2515.4.2.1 Smooth white finish shall be applied over the
base coat that has set for a period of not less than 24 hours and is surface
dry. Thickness shall be from 1/16 inch to 1/8 inch (1.6 mm to 3.3 mm).
2515.4.2.2 Sand-float finish shall be applied over the
set base coat that is not quite dry.
2515.4.2.3 Keene's cement finish shall be applied over
the set base coat that is not quite dry. Thickness shall be from 1/16 inch to
1/8 inch (1.6 to 3.3 mm), unless finish coat is marked off or is jointed; in
which case, the thickness may be increased as required by depth of marking or
jointing.
2515.4.2.4 The finish coat for interior Portland cement
plastering shall be applied in the same manner as required for the third coat
of exterior stucco, except that other types of finish coat may be applied as
specified in Section 2413.
2515.4.2.5 The finish coat for lightweight aggregate
plastering shall be from 1/16 inch to 1/8 inch (1.6 mm to 3.3 mm).
2515.4.3 Plaster on concrete.
2515.4.3.1 Monolithic concrete surfaces shall be clean,
free from efflorescence, damp and sufficiently rough to insure adequate bond.
2515.4.3.2 Gypsum plaster applied to monolithic-concrete
ceilings shall be specially prepared bond plaster for use on concrete, to which
only water shall be added. Gypsum plaster on monolithic walls and columns shall
be applied over a scratch coat of bond plaster, or other bonding material,
before it has set. The brown coat shall be brought out to grounds, straightened
to a true surface and left rough, ready to receive the finish coat.
2515.4.3.3 Portland cement plaster applied to interior
concrete walls or ceilings shall conform to requirements for application to
exterior concrete walls as specified in Section 2516.
[1- Default
– Not related to structural wind resistance design]
[3- Covered in model base code]
SECTION 2516
HIGH-VELOCITY HURRICANE ZONES — STUCCO
2516.1 General.
2516.1.1 Portland cement-based plaster shall
be applied in accordance with ASTM C 926, excluding Table 4 of that standard.
2516.1.2 Stucco base and finish coats, where
required to meet fire-resistance requirements, shall be mixed in proportion of
at least one part portland cement to a maximum of two and one-half parts sand
by volume.
2516.1.3 Approved manufacturing products may
be used for base and finish coats.
2516.1.4 Materials. The materials of stucco shall
conform to ASTM C 926.
2516.1.5 Admixtures.
2516.1.5.1 Plasticity agents shall be of
approved types and amounts and, where added to Portland cement in the
manufacturing process, no additions shall be made later.
2516.1.5.2 Color may be added to the finish
coat in approved amounts.
2516.1.6 Application.
2516.1.6.1 Stucco applied to concrete or
masonry to meet fire-resistance requirements shall consist of at least two
coats, and the total thickness shall be not less than 1/2 inch (12.7 mm).
2516.1.6.2 Masonry surfaces on which all
stucco is applied shall be clean, free from efflorescence, damp and
sufficiently rough, or coated with an approved bonding agent, to insure proper
bond.
2516.1.6.3 All concrete surfaces shall be
coated with an approved bonding agent or shall be effectively roughened.
2516.1.6.4 The first coat shall be well forced
into the pores of the masonry, shall be brought out to grounds, straightened to
a true surface and left rough enough to receive the finish coat.
2516.1.6.5 The first coat shall be rodded and
waterfloated to a true surface approximately one-half the total thickness.
2516.1.6.6 The base coat shall be damp cured
for a period of not less than 24 hours.
2516.1.6.7 In lieu thereof, the finish coat,
where containing appropriate waterproofing or curing admixtures, may be applied
as soon as the base coat has attained initial set and is sufficiently firm to
receive the finish coat.
2516.1.6.8 The finish coat shall be applied
over a uniformly damp but surface-dry base.
2516.1.6.9 Stucco shall be kept damp for a
period of not less than 48 hours after application of the finish coat.
2516.1.6.10 In lieu thereof, the finish coat may contain appropriate approved waterproofing or curing agents. Leave in per Broward request
2516.2 Stucco on
walls other than concrete or masonry.
2516.2.1 General. Stucco shall be as set forth in Section
2516.1.
[1- Default
– Not related to structural wind resistance design]
2516.2.2 Moisture barrier. Wood shall be covered with 15- pound (7 kg) roofing felt, or other approved equally moisture-resisting layer, and metal reinforcement as set forth herein.
2516.2.3 Metal
reinforcement.
2516.2.3.1 Stucco shall be reinforced with galvanized expanded metal weighing no less than 1.8 pounds per square yard (0.98 kg/m2), or galvanized welded or woven wire-fabric weighing no less than 1 pound per square yard (0.54 kg/m2).
2516.2.3.2 All metal lathing shall be lapped not less than 1 inch (25 mm).
2516.2.3.3 Metal reinforcement shall be furred out from the backing by an approved method.
2516.2.3.4 Fastenings into wood sheathing or wood framing shall be by galvanized nails, with heads not less than 3/8 inch (9.5 mm) in diameter, driven to full penetration, using a minimum of two nails per square foot (0.093 m2), or by approved staples having equal resistance to withdrawal.
2516.2.3.5 The fastening of rib-lath to metal members shall be by #8 galvanized sheet-metal screws, using a minimum of two screws per square foot (0.093 m2).
2516.2.4 Application.
2516.2.4.1 Stucco applied on metal lath shall be three-coat work applied to a total thickness of not less than 7/8inch (22.2 mm) thickness except as required to meet fire-resistance requirements.
2516.2.4.2 The first coat shall be forced through all openings in the reinforcement to fill all spaces and scored horizontally.
2516.2.4.3 The second coat shall be applied after the first coat has set sufficiently to provide a rigid backing.
2516.2.4.4 The third coat shall be applied as soon as the second coat has attained initial set.
2516.3 Pneumatically placed stucco.
2516.3.1 Pneumatically-placed stucco shall consist of a
mixture of one part Portland cement to not more than five parts sand, conveyed
through a pipe or flexible tube and deposited by pressure in its final
position.
2516.3.2 Rebound material may be screened and reused as
sand in an amount not greater than 25 percent of the total sand in any batch.
2516.3.3 Plasticity agents may be used as specified in
Section 2516.1.5.1.
[3- Covered in model base code]
SECTION 2517
HIGH-VELOCITY HURRICANE
ZONES — GYPSUM BOARD PRODUCTS AND ACCESSORY ITEMS
2517.1 General.
2517.1.1 Gypsum wallboard products and related items and
accessories to be used with or without the addition of plaster for partitions,
walls and ceilings shall be as set forth in this section.
2517.1.2 Where required to be fire resistive, such
assemblies shall also comply with Chapter 7 of this code.
[1- Default – Not related to structural wind resistance design]
[2- Fire/Life Safety]
[3- Covered in model base code]
2517.2 Standards. The following standards are adopted as
set forth in Chapter 35.
Application and finishing of gypsum wallboard GA-216-07
Fire
resistance Design Manual GA-600-06
Specification for Gypsum Wallboard, ASTM C 36.
Specification for General Requirements for Zinc-Coated
(Galvanized) Steel Sheets, by the Hot-Dip Process, ASTM A 525.
Specification for Light-gauge Steel Studs, Runners, and
Rigid Furring Channels, ASTM C 645.
Specification for Joint Treatment Materials for Gypsum
Wallboard Construction, ASTM C 475.
[1- Default – Not related to structural wind resistance design]
[3- Covered in model base code]
2517.3 Gypsum wallboard.
2517.3.1 The gypsum wallboard shall comply with the
standards set forth in Section 2517.2, and single or multiple system
combinations shall be not less than 1/2 inch (12.7 mm) in thickness.
2517.3.2 The span between supports for gypsum wallboard
shall be not more than 24 inches (610 mm) for 1/2 inch (12.7 mm) thick and 5/8
inch (17.1 mm) thick wallboard.
2517.3.3 Gypsum wallboard used in fire-rated assemblies
shall be of a type for which test ratings are available.
[3- Covered in model base code]
2517.4 Wood studs and wood ceiling supports. Wood studs and wood ceiling supports shall comply with Chapter 23 (High-Velocity Hurricane Zones).
2517.5 Steel studs, ceiling supports and track runners.
2517.5.1 Steel studs and runners used to construct
fire-resistive walls or partitions shall be hot-dipped galvanized in accordance
with ASTM A 525, coating designation G40, minimum and be of channel or
"C"-type shape. The total thickness of the base metal plus coating
shall not be less than 0.0184 inch (0.467 mm) unpainted and not less than
0.0194 inch (0.493 mm) if coated and painted. Studs and runners shall comply
with ASTM C 645 and have a base metal thickness, before application of any
coating, of not less than 0.0179 inch (0.455 mm). Structural properties of such
studs and runners shall comply with ASTM C 645.
2517.5.1.1 Steel studs supporting wall hung plumbing fixtures
shall be doubled or not less than 20 gauge with a minimum effective moment of
inertia equal to 0.864 in.4 (360 m4 ).
2517.5.1.2 Such studs shall be rigidly connected top and
bottom to prevent significant end rotation or displacement.
2517.5.1.3 A horizontal member securely fastened to not
less than two studs shall be installed for the attachment of each wall hung
plumbing fixture.
2517.5.2 The unsupported height of partitions shall
comply with the loads and deflections set forth in Chapter 16 (High- Velocity
Hurricane Zones) and where wallboard is suitably attached, the composite action
may be accounted for in the design.
2517.5.3 Steel ceiling supports shall comply with Section
2514.5.
2517.5.4 Steel studs track runners and ceiling supports in
walls, including curtain walls, shall comply with ASTM A 525.
Exception: Such members in interior nonload-bearing walls
need not be galvanized but shall comply with ASTM C 645.
[3- Covered in model base code]
2517.6 Attachments.
2517.6.1 Attachments shall be as set forth herein and for
fire-rated assemblies shall also conform to the material and conditions of the
assembly tested.
2517.6.2 Attachment to wood supporting members shall
conform to the standard set forth in Section 2517.2.
2517.6.3 Nails and screws attaching gypsum wallboard
shall, without substantially fracturing the surface paper, be driven below the
surface and spotted with finishing joint compound.
2517.6.4 Attachment to metal members shall be in
accordance with Section 2517.6.4.1 through Section 2517.6.4.5.
2517.6.4.1 Gypsum wallboard shall be attached to metal
members by self-drilling, self-tapping sheet metal screws.
2517.6.4.2 The spacing of screws attaching gypsum
wallboard to metal studs and runners, shall be not more than 12 inches (305 mm)
on center.
2517.6.4.3 Screws for attaching gypsum wallboard to metal
studs shall be not less than 7/8 inch (22.2 mm) long for 1/2 inch (17.7 mm)
wallboard or 1 inch (25.4 mm) long for 5/8 inch (17.1 mm) wallboard.
2517.6.4.4 Screws attaching gypsum wallboard shall be
driven below the surface and spotted with finishing compound.
2517.6.4.5 Runners shall be fastened to the ceiling,
contiguous walls and partitions and to the floor at intervals not exceeding 24
inches (610 mm) on center. Such attachment may be by nails penetrating the base
material not less than 5/8 inch (17.1 mm) or by self-drilling, self-tapping
sheet metal screws attaching metal to metal.
[1- Default – Not related
to structural wind resistance design]
[3- Covered in model base code]
SECTION 2518
HIGH-VELOCITY HURRICANE ZONES — SUSPENDED AND FURRED
CEILINGS
2518.1 General. Lath and plaster ceilings shall be as set
forth in this chapter.
2518.2 Suspended and furred ceilings, other than lath and
plaster where providing fire protection shall comply with Chapter 7.
2518.3 Suspended and furred ceilings, other than lath and
plaster, shall be suspended and supported in conformance with the conditions of
fire tests or, if not tested, as recommended by the manufacturer or as required
for structural stability.
[3- Covered in model base code]
SECTION 2519
HIGH-VELOCITY HURRICANE ZONES — ASBESTOS
2519.1 Asbestos cement shall not be permitted for use
under this code.
[1- Default – Not related to structural wind resistance design]
SECTION 2520
HIGH-VELOCITY HURRICANE ZONES — TILE
2520.1 Ceramic and Portland cement floor tile shall be
set on a concrete slab or on wood sheathing on wood joists protected by a
waterproof membrane.
2520.2 Floor tile shall be set in a mortar bed of one
part portland cement to three parts aggregate or otherwise bedded in an
approved adhesive material.
2520.2.1 Ceramic and portland cement wall tile used in
areas subject to frequent wearing shall be backed with masonry, stucco on wire
lath or approved tile backer board.
2520.2.2 Wall tile used in areas not subject to frequent
wearing shall be backed by a cladding having the rigidity of stucco on wire
lath and shall be bedded in cement mortar or other approved adhesive material.
2520.3 Portland cement or other porous tile shall be
soaked in water not less than 1 hour before placing.
2520.4 Built-in tubs with overhead showers shall have
waterproof joints between the tub and the wall and floor.
[1- Default – Not related
to structural wind resistance design]