Issue Team One

Issue Team 1, Incorporation of P695/P795 Methodologies

Chair:  Ronald O. Hamburger

PUC Liaison:  Charles Kircher

Membership/Duration:  Six to eight members still to be identified; expected duration of 24 months

Draft Scope:  With respect to FEMA P-695, Issue Team 1 will evaluate the methodology for adoption by BSSC as a means of establishing seismic performance factors for structural systems under the NEHRP Recommended Seismic Provisions.  The adoption could occur either by reference, transcription, or rewrite and either with or without technical and/or editorial modification.  As a minimum, the Issue Team will review and develop recommendations to the PUC on the following issues:

0. Should the PUC adopt a resolution that it will not consider submittal of any proposals to introduce structural systems into Table 12.2.1 of ASCE/SEI 7 unless the proposal is accompanied by supporting evaluation in accordance with the Methodology?
0. Should the PUC adopt a resolution of intent to obtain validation of all current structural systems contained in Table 12.2.1 of ASCE-7 using the FEMA P-695 methodology?
0. Should the PUC introduce into Part 1 (or Part 3) of the Provisions, a permissive statement permitting the use of structural systems not contained in Table 12.2.1 of ASCE/SEI 7 using seismic performance factors derived in accordance with the FEMA P-695 methodology?
0. Should the PUC develop and adopt a code/standards-ready version of the FEMA P-695 methodology either for transcription within or reference by the Provisions?
0. Should the PUC adopt into Part 1, or Part 3, of the Provisions, a requirement that the C_d coefficient for all structural systems be taken equal to the value of the R coefficient as is inherent in the P-695 methodology?
0. Should the PUC adopt into Part 1, or Part 3, of the Provisions, a requirement that the C_d coefficient for structural systems is period-dependent, being taken equal to R for long-period structures in accordance with the P-695 methodology and taken as greater than R for short-period structural systems?

Depending on the resolution of these issues, the Issue Team will develop appropriate proposals and accompanying material for consideration by the PUC.

With respect to FEMA P-795, Issue Team 1 will evaluate the methodology (currently pending publication) for adoption by BSSC as a means of permitting the use of substitute components in a structural system as a replacement for components conforming to those contained in the standard/code specifications for the system.  The adoption could occur either by reference, transcription, or rewrite and either with or without technical and/or editorial modification.  As a minimum, the Issue Team will review and develop recommendations to the PUC on the following issues:

0. Should the PUC adopt into Part 1, or Part 3, of the Provisions, a procedure based on the FEMA P-795 methodology for use of substitute structural components within a structural system?
0. What limitations, if any, should be placed on such substitution?
0. Should the PUC develop and adopt a code/standards-ready version of the FEMA P-795 methodology either for transcription within or reference by the Provisions?

Depending on the resolution of these issues, the Issue Team will develop appropriate proposals and accompanying material for consideration by the PUC.