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Materials, Shapes, and Standard
Sizes
Cold-Formed Steel
Material
Structural and non-structural framing members utilized in steel construction shall be cold-formed
to chape
from sheet steel complying with
the requirements
of ASTM
A1003/A1003M [23].
Corrosion Protection
Structural and non-structural
framing
members utilized
in steel
construction shall have a minimum
metallic coating complying with the requirements of ASTM A1003/ A1003M [23]. Unless additional corrosion protection is provided, framing members
shall be located within the
building envelope and
adequately shielded from direct
contact with
moisture from the ground or the
outdoor climate. Dissimilar metals shall not be used in direct contact with steel framing members. Steel framing members
shall not be embedded
in concrete, unless approved for that purpose.
Fasteners shall have rust inhibitive coating suitable
for the installation in which they are
being used, or be manufactured from material not susceptible to corrosion.
Member Designation
The standard
designator defined in this section is used to identify framing members used in cold-formed steel construction.
The
designator consists of the
following
sequential codes:
A three or four-digit numerical
indicating member web depth in 1/1000 inch. A letter
indicating:
S = Stud or joist framing member which have lips
T = Track section
U = Channel or stud framing section which do not have lips
F = Furring channels
L = Angle or L-header
A three-digit numerical indicating flange width in 1/100 inch, followed by a dash. A
two or three-digit numerical indicating base metal thickness in 1/1000 inch (mils).
Example: Designation for a 5 1/2"-16 gauge C-shape with 1 5/8" flanges:
550S162-54
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