PUBLIC CODE CHANGE PROPOSAL FORM
PUBLIC CODE CHANGE PROPOSAL FORM
FOR PUBLIC PROPOSALS TO THE INTERNATIONAL CODES
2012/2013 CODE DEVELOPMENT CYCLE
CLOSING DATES: Group A Codes: January 3, 2012
Group B Codes: January 3, 2013
*See Item 3 of these instructions for additional information concerning Group A and Group B Code Development Committees Responsibilities*
1)
|Name: Jonathan Siu |Date: December 19, 2011 |
|Jurisdiction/Company: City of Seattle Dept of Planning & Development |
|Submitted on Behalf of: Washington Association of Building Officials Technical Code Development Committee |
|Address: 700 – 5th Ave, Ste 2000; PO Box 34019 |
|City: Seattle |State:WA |Zip Code: 98124-4019 |
|Phone: 206-233-5163 |Ext. |Fax: 206-386-4039 |
|E-mail address (see # 4 below): jon.siu@ |
CODE CHANGE PROPOSAL FORM
Code: IBC –12/13
Code Sections/Tables/Figures Proposed for Revision (3.3.2); Note: If the proposal is for a new section, indicate (new).
505.2.4 (new)
Proponent: Name/Company/Representing (3.3.1): (NOTE: DO NOT USE ACRONYMS FOR YOUR COMPANY OR ORGANIZATIONAL NAME)
Jonathan Siu/City of Seattle Dept of Planning & Development/Washington Association of Building Officials Technical Code Development Committee
Revise as follows:
Add new text in new Section 505.2.4 as follows:
505.2.4 Construction. Mezzanines and their supporting construction shall be of not less than one-hour fire-resistance-rated construction.
Exception: Mezzanines in buildings of Types IIB, IIIB and VB construction shall be permitted to be of unprotected construction, provided the materials used are allowed for the building type of construction.
Reason:
The purpose of this code change is to provide clear guidance to the code user as to what is required for mezzanine and equipment platform construction. This is a companion to a code change proposal being submitted by the WABO Technical Code Development Committee relating to construction requirements for equipment platforms (Section 505.3).
The 2012 IBC is silent on the type of construction and fire resistance rating requirements for mezzanines. This can be interpreted to mean that any materials can be used—for example, unprotected wood construction would be allowed in a Type VA or even a Type IA building. This code change proposal seeks to clarify the requirement by requiring 1-hour protected construction for mezzanines, but has an exception for non-rated construction types.
Cost Impact: The code change proposal will increase the cost of construction.
Public Hearing: Committee: AS AM D
Assembly: ASF AMF DF
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