TN · County

DeKalb County, TN.

DeKalb is in TN (IECC zone 3A, design wind 90 mph).

Coverage in progress

Adopted edition

IRC 2018

Inherits from TN state floor.

Design wind speed

90 mph

ASCE 7 Risk Cat II, 3-second gust at 33 ft. Drives fastener spacing, hold-downs, and opening protection.

Climate zone (IECC)

3A

Drives R-value, fenestration U-factor, and air-leakage envelope rules.

Special zones

HVHZ
WBDR
WUI
FEMA SFHA possible

Permit office

DeKalb County Building Department

NULL

Working in DeKalb County?

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