Quantcast Seismically Isolated Structure Design

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Division. Alternate Provisions for the Design of Masonry Structures Appendix to Chapter
11 of FEMA 302 shall not be used .
Minimum requirements for inspection and testing shall comply with the requirements of
FEMA 302. It is recommended, for any significant CMU construction, that the continuous
QC specialist inspection mentioned in part 1 of specification section 04230 be called for
and that prism tests be used to document the required fm'.
6.8.3.8 Wood Design:  As a minimum, all wood design shall comply with section 12.8
(Seismic Design Categories E and F) of the "NEHRP Seismic Provisions." Design of
members and connections shall comply with "AF&PA/ASCE 16-95, Standard for Load and
Resistance Factor Design (LRFD) for Engineered Wood Construction." Note that section
12.8 of the NEHRP Seismic Perovisions" prohibits the use of unblocked structural-use
panel sheathing.
6.8.3.9 Seismically Isolated Structure Design:  Design of seismically isolated structures
shall be in accord with chapter 13 of the "NEHRP Seismic Provisions."
a. The "Equivalent Lateral Force" procedure referenced in section 13.3 may not be
used.
b. Site specific ground motion spectra shall be used for all seismically isolated
structural design.
c. Design using seismic isolation must receive written approval from Code
04CN.EH, Southwest Division.
d. Note that a design and test program peer review in accord with section
13.8.1 of the "NEHRP Seismic Provisions" is required.
6.8.3.10 Passive Energy Dissipation System Design: Design of passive energy
dissipating systems shall be in accord with the appendix to chapter 13 of the "NEHRP
Seismic Provisions."
a. Designs using passive energy dissipating systems must receive written
approval from Code 04CN.EH, Southwest Division.
b. Note that a design and test program peer review similar to that prescribed in
section 13.8.1 of the "NEHRP Seismic Provisions" is required.
6.8.3.11 Nonbuilding Structure Design: Seismic rehabilitation of Piers and Wharves
shall be based on the provisions of "Technical Report TR-2069-SHR - Design Criteria for
Earthquake Hazard Mitigation of Navy Piers and Wharves" dated March 1997, distributed
by NAVFACENGCOM, rather than by the provisions of the "NEHRP Seismic Provisions."
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