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 6.8.2.5 Concrete Design: As a minimum, all concrete design shall comply with section
9.7 (Seismic Design Categories D, E or F) of FEMA 302. The exceptions to section
9.7.3 shall be excluded. Reinforced Concrete Structural Systems Composed of
Interconnected Precast elements Appendix to chapter 9 of FEMA 302, will not be
permitted without written approval from Code 04CN.EH, Southwest Division.
6.8.2.6 Composite Steel and Concrete Structural Design Requirements Design per
chapter 10 of FEMA 302 and Part II of the "AISC Seismic Provisions", will not be
permitted without written approval from Code 04CN.EH, Southwest Division.
6.8.2.7 Concrete Masonry Design: As a minimum, all concrete masonry design shall
comply with section 11.3.9 (Seismic Design Categories D, E and F) and section 11.11.5
(Special Reinforced Masonry Shear Walls) of FEMA 302. Stack Bond Construction per
section 11.3.9.3 of FEMA 302, will not be permitted for structural walls without written
approval from Code 04CN.EH, Southwest Division. Alternate Provisions for the Design of
Masonry Structures Appendix to Chapter 11 of FEMA 302 shall NOT be used.
a. 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'.
b. Note that section 7-2-h(5)(d) of TI 809-04 calls for the use of 1.25fy for the
expected lateral strength of shear wall reinforcing used in shear or flexural
calculations.
6.8.2.8 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" -
reference 12-1 in the "NEHRP Seismic Provisions." Note that section 12.8 of the "NEHRP
Seismic Provisions" prohibits the use of unblocked structural-use panel sheathing
diaphragms.
6.8.2.9 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 (reference section 13.3 shall not be
used.
b. Site specific ground motion spectra shall be used for all seismically isolated
structure design.
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