Interpretation #6641

Published March 22, 2011

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Original Request

Code Version
2007
Code
BUILDING
Code Description
Building
Chapter
4
Section
419.4.2.5.1
Topic
Impact load design

Question

Is it the intent of 419.4.2.5.1 All exterior window units, skylights, exterior louvers and exterior door units including vision panels and their anchoring systems shall be designed to resist the wind load requirements of the code and the debris impact requirements in Sections 1626.2 through 1626.4. To invoke sections 2410 through 2415 as well as 1626.2 through 1616.4, or are we suppose to design the glazing system for the project design loads and the glazing shall meet the impact loads?

Answer Published 03/22/2011 at 9:13 AM

Yes, the glazing system must meet the project design loads
and the glazing itself must meet the impact loads.

Commentary

See Informal Interpretation 4689.