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Interpretations Request Input

Original Request

  • Request ID: 8567
  • Requested By: Robert Hatton
  • Requester E-Mail: rhatton@largo.com
  • Code Version: 2021
  • Code: EXTBLDG
  • Code Description:
  • Chapter:
  • Section: 706.1
  • Topic: Positive roof drainage
  • Question: Is it the intent of the exception in section 706.1 to require a slope on flat roof during a re-roof to create positive drainage?
  • Comment: It has been suggested that the definition of Positive Roof Drainage in Chapter 2 of the Florida Building Code supersedes the requirement of a slope if a flat roof drys within 48 hours of precipitation. I am of the opinion that the definition is clear that a slope is required, as the definition does not use the phrase drys within 48 hours. The definition of positive roof drainage in chapter 2 is "the drainage condition in which consideration has been made for all loading deflections of the roof deck, and additional slope has been provided to ensure drainage of the roof within 48 hours of precipitation."

Existing Interpretations and/or Declaratory Statements Related to this request

Input Received:

2020 Existing Building Code, Definitions of Positive Roof Drainage is to require a slope that ensures that the roof will be dry within 48 hours not to have no slope if the roof dries within 48 hours.
David Young on 09/20/2021 at 3:09 PM
I agree with David.
Samuel Greenberg on 09/20/2021 at 7:02 PM

Answer:

2020 Existing Building Code, Definitions of Positive Roof Drainage is to require a slope that ensures that the roof will be dry within 48 hours not for no slope even if the roof dries within 48 hours.
On 10/01/2021 at 12:55 PM

Commentary:

None.

Comments on Draft:

agree
Michael Grimm on 10/01/2021 at 5:33 PM
Publish Draft Interpretation