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2020 Code Updates
HVHZ Roofing
David Fuentes
Roofing Plans Processor
Tel: 786-315-2214
Miami-Dade County Dept. Regulatory & Economic Resources
Building Official: Edward Rojas
Department of Regulatory and Economic Resources
Construction Permitting and Building Code Division
Topics of Discission
Changes to ASCE 7
▪ASCE 7-10 vs. 7-16
▪Changes to roof heights
▪Wind pressures
▪Roof zones
▪Roof zone layouts
▪Changes to HVHZ
Changes in the 2020 FBC
Florida Building Code 7th
Edition Significant Changes
• The next version of the Florida
Building Code (FBC) will be
the 2020 7th Edition.
• This edition will come into
effect December 31, 2020.
• All applications turned in after
the close of the business day
on December 30, 2020, will be
applicable to the 2020 7th
Edition of the FBC.
FLORIDA BUILDING CODE
Seventh Edition (2020)
Florida Building Code 7th
Edition Significant Changes
• Use calculated uplift pressures by a Design
Professional per ASCE 7-16
• Or use uplift pressures per FBC 2020 (7th
Edition) HVHZ Test Protocols
• RAS-127 (Steep Slopes)
• RAS-128 (Low Slopes)
• No changes from ASCE 7-10 to
• ASCE 7-16 regarding ultimate loads
ASCE 7-16
Florida Building Code 7th
Edition Significant Changes
• Zone P(1’)
• Field of Roof – Interior
• Zone P(1)
• Field of Roof – Exterior
• Zone P(2) Perimeter
• Zone P(3) Corners
ASCE 7-16 Roof Zones
4 possible roof zones on flat
roofs.
Florida Building Code 7th
Edition Significant Changes
• The dimensions of the applicable roof
zones, are now a function of the roof’s
height in 7-16
• If the parapet walls are ≥ 3 ft on the roof,
the wind pressures are the same on
Corners P(3) as they are for Perimeters
P(2)
• All 4 roof zones may not be present on a
roof
ASCE 7-16 Roof Zones
Florida Building Code 7th
Edition Significant Changes
• There are five roof zone layouts are now
possible, which are dependent on
• The roof eave height (h)
• The smaller horizontal dimension
• The larger horizontal dimension
• These layouts are job site specific.
ASCE 7-16 Roof Zones
5 possible Roof Layouts
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Roof zone layout (a)
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Roof zone layout (b)
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Roof zone layout (c)
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Roof zone layout (d)
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Roof zone layout (e)
Florida Building Code 7th
Edition Significant Changes
Sample roof plan
Per Current Code 2017
Florida Building Code 7th
Edition Significant Changes
Sample roof plan
Per NEW Code 2020
Florida Building Code 7th
Edition Significant Changes
Sample Roof Zone Layouts
Florida Building Code 7th
Edition Significant Changes
Sample Roof Zone Layouts
Florida Building Code 7th
Edition Significant Changes
Florida Product Approvals
Florida Building Code 7th
Edition Significant Changes
MDC Notice of Acceptance
(NOA)
Florida Building Code 7th
Edition Significant Changes
RAS 128 Comparisons
2017 Vs. 2020 FBC
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Gable & Hip Roofs
Florida Building Code 7th
Edition Significant Changes
ASCE 7-16 Roof Zones
Gable & Hip Roofs
• a = 10% of least horizontal dimension or .04H, which ever is smaller but not less than 3’.
Florida Building Code 7th
Edition Significant Changes
• Up to 6 wind zones on a roof.
• There are now 12 different tables in
RAS127.
• These tables are varied from Gable to Hip
Roofs, the roof slope range, roof mean
height & Risk Category.
RAS 127
FBC 2020
Florida Building Code 7th
Edition Significant Changes
RAS 127
Gable & Hip Roofs
Florida Building Code 7th
Edition Significant Changes
Sample Tile Permit
Section D
Florida Building Code 7th
Edition Significant Changes
Sample Tile Permit
Section E Tile Attachment
Florida Building Code 7th
Edition Significant Changes
Changes to Chapter 15
HVHZ Roofing
• Table 1515.2 Note:1. Standing seam metal
roof panel systems that pass the
requirements of the Static Water Leakage
Test criteria of FM 4471, Appendix G or
ASTM E2140 shall be permitted to be
installed to a minimum slope of 1:12.
• E-Permitting is updated & ready to launch
on Dec. 31, 2020.
Florida Building Code 7th
Edition Significant Changes
• Florida Building Code:
https://codes.iccsafe.org/codes/florida
• Florida Product Control Search:
https://www.floridabuilding.org/pr/pr_app_sr
ch.aspx
• Miami-Dade Product Control Search:
http://www.miamidade.gov/building/pc-
search_app.asp
• Miami-Dade Permit Forms:
http://www.miamidade.gov/permits/
Resources & Helpful Links
• Important Information
– Effective on December 31,2020.
– Any upload application submitted via the online portal after the close of business at 4PM on December 30th,2020 will have to comply with the 2020 edition.
• Useful Resources
– For more comprehensive analysis and section by section comparison between 6th and 7thEdition of the FBC, visit http://www.floridabuilding.org/fbc/Links_to_Code_Resources.html
This presentation is not intended to replace the provisions contained in the 7th Edition (2020) of the FBC neither to be used without the official code book.
Florida Building Code
Changes
WE ARE AVAILABLE TO ASSIST YOU!
Miami-Dade County Permitting and Inspection Center
11805 SW 26th Street
Miami, Florida 33175
Main Phone: 786-315-2000
Voice Response: 305-591-7966
