30 November 1998
Design selected walls to provide frame stability and lateral load resistance.
Engineered methods such as diaphragm shear walls or diagonal steel strapping are
used to provide frame stability and transfer lateral loads through the structure into the
foundation. Provide additional studs as required to resist the vertical component of
the loads from the diagonal bracing.
Diaphragm rated components can be substituted for bridging; however, they must be
installed prior to loading of the wall. If components are installed on one side of the
wall only, then the flanges on the other side of the studs must be bridged with
suitable bridging. Bridging can be removed or left in place when diaphragm rated
components are installed.
Provide for structure movement as indicated and necessary by design or code
(2) Member Specification. The primary specification for the design of the individual
components is the AISI Specification for the Design of Cold-Formed Steel Structural Members. Other
considerations, which the designer specifies, include:
Member or Stud size, spacing, and depth.
Deflection criteria, maximum spacing, minimum gage, wind loads.
Studs are spaced to suit the design requirements and limitations of collateral
Allow for additional studs at panel intersections, corners, doors windows, control
b. Manufacturers. Lightweight steel framing involves the use of engineered products in an
engineered system. Manufacturers provide technical product information, including physical and
structural properties, and manufacturing standards that the designer can use to specify the appropriate
Samples. Samples are representative pieces of all framing component parts and
Certification. Certification is a statement from the manufacturer certifying that the
materials conform to the appropriate requirements as outlined in the contract documents;
c. Contractor. The Contractor is responsible for providing the finished structure in strict
compliance with the contract documents and cold-formed steel shop drawings. Included in the
contractor's responsibilities are the following:
Shop Drawings of details and attachments to adjoining work.
Drawings showing plans, elevations, sections, and details.
size, location, spacing of fasteners for attaching framing to itself
details of attachment to the structure
accessories and their installation
and critical installation procedures
d. Contractor Quality Control. The Contractors Quality Control (CQC) Manager inspects Corps
of Engineers projects. This effort outlines the contractor's inspection document requirements. The
following Quality Assurance Documents are to be maintained by the CQC Manager:
The manufacturer and product delivery dates,
the contractor's staff and qualifications,
compliance to testing standards for members, erection tolerances, and fasteners,