Deletion legend:
[1- Default – Not related
to structural wind resistance design]
[2- Fire/Life Safety]
[3- Covered in model base
code]
SECTION 2003
HIGH-VELOCITY HURRICANE ZONES—ALUMINUM
2003.1 Design. Aluminum members shall be designed
by methods admitting of rational analysis according to established principles
of mechanics.
2003.2 Standards. The design, fabrication, and erection
of structural aluminum shall conform to the Aluminum Design Manual.
2003.3 Workmanship. Aluminum construction shall be in
conformance with the tolerances, quality and methods of construction as set
forth in Section 2003.2 and the American Welding Society's Structural Welding
Code-Aluminum (D1.2).
2003.4
Definitions. Members shall be defined as in Section 2002.2.1.
[1- Default – Not related
to structural wind resistance design]
2003.5
Identification. Aluminum for structural elements shall at all times be
segregated or otherwise handled in the fabricator's plant so that the separate
alloys and tempers are positively identified and, after completion of
fabrication, shall be marked to identify the alloy and temper. Such markings
shall be affixed to complete members and assemblies or to boxed or bundled
shipments of multiple units prior to shipment from the fabricator's plant.
Exception:
Certification by the fabricator and or contractor shall be provided attesting
to the alloy and temper of the material.
[1- Default – Not related
to structural wind resistance design]
2003.6 Allowable unit stresses.
2003.6.1 The design, fabrication and assembly
of aluminum members for building and other structures shall conform to the
standard set forth in Section 2003.2 and as otherwise set forth herein.
2003.6.2
The use of aluminum alloys, other than those listed in the standard shall provide
performance not less than those required by the standard and as set forth
herein.
[3- Covered in model base
code] Alternate methods and materials.
2003.6.3 Aluminum members shall be limited by
the deflections set forth in Section 1615.3.
2003.7 The building official may require
that any structure using aluminum primary or secondary members be designed by a
Florida-registered professional engineer.
2003.7.1 Reserved.
2003.7.2 In addition to flexural and shearing
stresses, the critical factors of buckling, fatigue, stress raisers such as
notches or holes or shape re-entrant corners, deflection and connections shall
be considered and provided for by proper design.
2003.7.3 All solid roof systems shall be
designed for a minimum 30 psf (1436 Pa) live load.
2003.7.4 All buildings and structures shall be
designed to resist uplift. In the case of placement on existing slabs and
foundations, sufficient information and calculations shall be provided by the
professional engineer and/or architect to verify the ability of the slab or
foundation to resist uplift loads.
2003.7.5 All connection devices shall be rated
by load testing by an approved testing laboratory.
2003.7.5.1 All expansion anchors shall not be
installed less than 3 inches (76 mm) from the edge of concrete slab and/or
footings. All expansion anchors shall develop an ultimate withdrawal resisting
force equal to four times the imposed load, with no stress increase for
duration of load.
2003.8 Fabrication and construction
details.
2003.8.1 Connections. Aluminum members shall be designed as
set forth in the standards in Section 2003.2.
2003.8.1.1 Fasteners. Bolts and other fasteners shall be
aluminum, stainless steel, hot-dip or electro-galvanized steel. Double cadmium
plated steel bolts may also be used.
2003.8.1.2
Painting. Except as prescribed in Section 2003.8.4, painting or coating of
aluminum alloy parts shall be required only when called for on the plans.
[1- Default – Not related
to structural wind resistance design]
2003.8.1.3 Welding. Aluminum parts shall be welded with
an inert-gas-shielded arc or resistance welding process. No welding process
that requires a welding flux shall be used. Filler alloys complying with the
requirements of the standard in this chapter shall be used.
2003.8.1.4 Welder qualifications. All welding of structural aluminum
member shall be performed by certified welders.
2003.8.1.5 Erection. During erection, structural aluminum
shall be adequately braced and fastened to resist dead, wind and erection
loads.
2003.8.2 Structural aluminum decking
and siding.
2003.8.2.1 Aluminum sections spanning between
supports shall be limited in span to satisfactorily support the positive and
negative loads set forth in Chapter 16 (High- Velocity Hurricane Zones). The
deflection of decking shall not exceed that set forth in Section 1613.
2003.8.2.2 Aluminum sheet used for roof decking
or siding shall be not less than 0.032 inch (0.8 mm) in thickness.
2003.8.2.3 Aluminum sheets shall be secured to
the supports to adequately resist positive and negative loads. Attachments
shall be at intervals not exceeding 8 inches (203 mm) o.c. and shall be secured
to each other at side laps at intervals as required by rational analysis and/or
tests, but shall not exceed 12 inches (305 mm) o.c.
2003.8.2.4 Fasteners shall have a head, and/or
be provided with washers not less than 1/2 inch (13 mm) in diameter.
2003.8.2.5 Fasteners located at end laps shall
be placed not more than 2 inches (51 mm) nor less than 1 inch (25 mm) from the
end of overlapping sheets.
2003.8.2.6 Where roof or wall cladding is of
aluminum, an approved membrane to protect against water intrusion to the
interior shall be provided or the aluminum cladding shall be designed and
constructed with an approved continuous edge-interlock, overlap or seam to
prevent water intrusion.
2003.8.3 Nonstructural aluminum decking and
siding.
2003.8.3.1 Nonstructural aluminum sheets shall
be backed with cladding as set forth in Chapter 23 and Chapter 24
(High-Velocity Hurricane Zones).
2003.8.3.2 Nonstructural aluminum sheets shall
have a minimum thickness of 0.032 inches (0.8 mm).
2003.8.3.3
An approved membrane to protect against water intrusion shall be provided or
the aluminum cladding shall be designed and constructed with an approved
continuous edge-interlock, overlap or seam to prevent water intrusion.
[1- Default – Not related
to structural wind resistance design]
2003.8.3.4 Nonstructural decking and siding
shall be attached as set forth in Section 2003.8.2 except that the attachment
of aluminum residential siding shall be by rational analysis and/or tests using
a minimum 0.120-inch (3 mm) diameter aluminum nails of sufficient length to
penetrate studs a minimum of 2 inches (51 mm). Nails at wood studs shall be as
required by rational analysis and/or tests, but spaced not greater than 24
inches (610 mm) o.c. horizontally and no greater than 8 inches (203 mm) o.c.
vertically.
2003.8.4
Dissimilar materials.
2003.8.4.1
Aluminum may contact compatible metals such as, but not limited to:
1.
Nonmagnetic stainless steel provided the contacting surfaces and any
attachments are enclosed for protection from the weather.
2.
Zinc.
3.
White bronze.
2003.8.4.2
Aluminum contacting metals not considered compatible shall be protected as
follows:
1.
Painting the dissimilar metal with a prime coat of zinc-chromate primer or
other suitable primer, followed by one or two coats of aluminum
metal-and-masonry paint or other suitable protective coating, excluding those
containing lead pigmentation.
2.
Painting the dissimilar metal with a coating of a heavy-bodied bituminous
paint.
3.
Placing a good quality caulking material between the aluminum and the
dissimilar metal.
4.
Applying a nonabsorptive tape or gasket.
5.
Hot-dip galvanizing or zinc-plating steel members after fabrication.
2003.8.4.3
Dissimilar metals shall be painted if used in locations where drainage from
them passes over aluminum.
2003.8.4.4
Aluminum surfaces in contact with lime-mortar, concrete, or other masonry
materials, shall be protected with alkali-resistant coatings, such as heavy-bodied
bituminous paint or water-white methacrylate lacquer.
2003.8.4.5
Aluminum in contact with wood or other absorbing materials which may become
repeatedly wet shall be painted with two coats of aluminum metal-and-masonry
paint or a coat of heavy-bodied bituminous paint, or the wood or other
absorbing material shall be painted with two coats of aluminum house paint and
the joints sealed with a good quality caulking compound.
2003.8.4.6
Where aluminum is in contact with treated wood, wood shall be treated with
pentachlorophenol, 5 percent minimum concentration, creosote, or zinc
naphthanate, following the protective measures outlined in Section 2003.8.4.5.
2003.8.5
Expansion and contraction. Aluminum work shall be designed and anchored so the
work will not be distorted nor the fasteners overstressed from the
expansion and contraction of the metal.
[3- Covered in model base code] ADM1-10 Part
II Section M7, and in Part III Section 6.
2003.9
Sunrooms
2003.9.1
Wind Loads: Basic wind speed in miles per hour (mph) shall be determined in
accordance with Section 1620. Sunrooms including exposed structures,
components, cladding, and roof covering shall be designed to resist the wind
loads as established in Section 1620.1.
2003.9.2
Sunroom Categories. Sunrooms shall be categorized in one of the
following categories by the permit applicant, design professional, or the
property owner where the sunroom is being constructed:
Category I: A
roof or a covering of an outdoor space. The openings shall be permitted to be
enclosed with insect screening or 0.5 mm (20 mil) maximum thickness plastic
film. The space is defined as nonhabitable and unconditioned.
Category II:
A roof or a covering of an outdoor space with enclosed walls. The openings are
permitted to be enclosed with translucent or transparent plastic or glass. The
space is defined as nonhabitable and unconditioned.
Category III:
A roof or a covering of an outdoor space with enclosed walls. The openings are
permitted to be enclosed with translucent or transparent plastic or glass. The
sunroom complies with additional requirements for forced-entry resistance,
air-leakage resistance and water-penetration resistance. The space is defined
as nonhabitable and unconditioned.
Category IV:
A roof or a covering of an outdoor space with enclosed walls. The sunroom is
designed to be heated and/or cooled by a separate temperature control or system
and is thermally isolated from the primary structure. The sunroom complies with
additional requirements for forced-entry resistance, water penetration
resistance, air-leakage resistance, and thermal performance. The space is
defined as habitable and conditioned.
Category V: A
roof or a covering of an outdoor space with enclosed walls. The sunroom is
designed to be heated and/or cooled and is open to the main structure. The
sunroom complies with additional requirements for forced-entry resistance,
water-penetration resistance, air-leakage resistance, and thermal performance.
The space is defines as habitable and conditioned.