may be assumed to be absorbed in the standing seam
rib.
**************************************************************************
Roof panels shall be free to move in response to the expansion and
contraction forces resulting from a total temperature range of [_____]
degrees C degrees F during the life of the structure.
1.4.7
Framing Members Supporting the SSSMR System
Any additions/revisions to framing members supporting the SSSMR system to
accommodate the manufacturer/fabricator's design shall be the Contractor's
responsibility and shall be submitted for review and approval. New or
revised framing members and their connections shall be designed in
accordance with [AISC 335] [AISI SG-973] [SJI Specs & Tables]. Maximum
deflection under applied live load, snow, or wind load shall not exceed
1/180 of the span length.
1.4.8
Roof Panels Design
Steel panels shall be designed in accordance with AISI SG-973. Aluminum
panels shall be designed in accordance with AA ADM1. The structural
section properties used in the design of the panels shall be determined
using the unloaded shape of the roof panels. The calculated panel
deflection from concentrated loads shall not exceed 1/180 of the span
length. The calculated panel deflection under applied live load, snow, or
wind load shall not exceed 1/180 times the span length. Deflections shall
be based on panels being continuous across three or more supports.
Deflection shall be calculated and measured along the major ribs of the
panels.
1.4.9
Accessories and Their Fasteners
Accessories and their fasteners shall be capable of resisting the specified
design wind uplift forces and shall allow for thermal movement of the roof
panel system. Exposed fasteners shall not restrict free movement of the
roof panel system resulting from thermal forces. There shall be a minimum
of two fasteners per clip. Single fasteners with a minimum diameter of 9
mm 3/8 inch will be allowed when the supporting structural members are
prepunched or predrilled.
1.5
PERFORMANCE REQUIREMENTS
**************************************************************************
NOTE: Testing is required to verify the adequacy of
the SSSMR system. External reinforcement of panel
seams is not permitted, except when approved by the
customer and the designer. Consider the use of
closer purlin spacing and/or narrow width panels
(305 mm (12 inches)) in order to eliminate the need
for external reinforcement. External reinforcement
includes clips, and clamps on the ribs or seams.
**************************************************************************
The SSSMR shall be tested for wind uplift resistance in accordance with
ASTM E 1592; SSSMR systems previously tested and approved by the Corps of
Engineers' STANDARD TEST METHOD FOR STRUCTURAL PERFORMANCE OF SSMRS BY
UNIFORM STATIC AIR PRESSURE DIFFERENCE may be acceptable. Two tests shall
be performed. Test 1 shall simulate the edge condition with one end having
SECTION 07416A
Page 13
Previous Page
