Committee flags possible flood-loading change from ASCE 7-22 Supplement 2 for follow-up
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Summary
Committee members flagged a potential issue with adoption of ASCE 7-22 Supplement 2 that could change flood-elevation references and increase the number of homes subject to flood-related code requirements. Staff will verify whether the supplement remains part of pending CR102 filings and report back at the December meeting.
At the end of the Nov. 7 meeting, the BFRW committee raised a separate technical concern about a possible adoption of ASCE 7-22 Supplement 2 and its effect on flood elevation and flood-loading requirements.
The chair said earlier council adoption of ASCE 7-22 Supplement 2 might alter flood-elevation references used for building design and potentially expand the number of residential structures subject to more stringent flood-load requirements. Committee members requested staff research whether that supplement remains included in pending CR102 filings for the 2024 code cycle and whether state-level adoption would affect local floodplain ordinance alignment.
Staff and participants said they believed the WAVO group (and ASCE participants) had discussed the supplement and that it may already have been withdrawn, but they asked staff to verify the record. The committee asked staff to prepare a short report for the committee's December meeting.
No formal action was taken other than requesting staff research; the item was placed on the next meeting's agenda.
Ending: Staff will verify whether ASCE 7-22 Supplement 2 remains part of any pending proposal, and will return findings and recommendations for the December meeting.