Civil Engineering Reference
In-Depth Information
3. Calculations for cables should include both determination of cable size and
construction to satisfy all loading combinations and the design of attachment
plates for bending and axial stress and bearing and tear-out at pin holes for
cable termination hardware.
4. Calculations for supporting members and foundations should be provided in
accordance with applicable building code requirements and industry
standards.
Specifications:
Specifications should be prepared and included with the contract documents, and
should be formatted to be included with an overall project specification, where the
fabric roof is part of a larger project. Specifications should address fabric and cable
material requirements, and the special fabrication and erection requirements of the
fabric structure. Requirements for the supporting structure and foundations will
generally be provided by reference to other specification sections.
The lack of widespread knowledge of tensioned fabric structures and the limited
recognition of this construction type in building codes pose special problems in
interfacing with building officials, problems that are shared by other new or esoteric
building technologies. While officials are not inherently adverse to the application of
such technologies, they may require a high degree of technical validation from the
engineer in order to fulfill their obligation to assure public safety and adherence to
building codes.
Documentation that is unique to tensioned fabric structures may be required in order
to obtain building department approval. This special documentation may include the
following:
1. A general description of the characteristics of these structures, including large
deflection behavior and anisotropic material properties.
2. Information that is required to understand the methodology of shapefinding
and analysis computer programs as well as to read and interpret input and
output.
3. Relevant fire testing reports
4. Shapefinding and analysis computer runs.
5. Calculations for cables and steel or other supporting members.
6. Drawings showing the layout of fabric panels, typical fabric seams, interfaces
of fabric with the supporting structure, typical cable details, fabric tensioning
details, etc.
Search WWH ::
Custom Search