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Component Manufacturing dverti$er
Don’t Forget! You Saw it in the
February 2019 #11235 Page #96
Adverti$er
Code Corner: New Year, New Code Developments By Randall Shackelford, P.E.
H
appy new year! A new year brings new developments on the Building Code front. A summary of relevant code activities follows.
ICC Update With the end of 2018 and the start of 2019, the ICC Code Development Cycle for the 2021 I-Codes moves into its second year. The Group A cycle online voting concluded December 7 and the preliminary results have been posted by ICC. While Group A is generally thought of as focusing on non-structural codes or aspects of codes, this year was of more interest from a structural standpoint because of a comprehensive package of code changes dealing with mass timber construction, including heavy timber and CLT construction methods. Most of these changes were developed by the ICC Ad Hoc Committee on Tall Wood Buildings. This committee was made up of a large cross-section of code users and industry representatives. They considered a large amount of fire test data in the course of their deliberations. Readers can view video highlights of the fire tests. In all, 14 code change proposals dealing with CLT were developed by the committee, and they all passed either as submitted or as modified. Required Fire Protection
Maximum Number of Stories (may be smaller for some occupancies)
IBC Construction Basic Description Type Structural Frame
Exterior Walls
Floor
Roof
Type IV-A
Fully protected, interior and exterior
3 hrs.
3 hrs.
2 hrs.
1-1/2 hrs.
18 (270ʹ)
TYPE IV-B
Protected exterior, limited exposed timber interior
2 hrs.
2 hrs.
2 hrs.
1 hr.
12 (180ʹ)
TYPE IV-C
Protected exterior, exposed timber interior
2 hrs.
2 hrs.
2 hrs.
1 hr.
9 (85ʹ)
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