IMPACT ON WOOD BORNE DEBRI

Jacksonville       Duval County                 904-346-1266
St Augustine      St Johns County             904-824-7144
Orange Park       Clay County                   904-264-6444
Jacksonville Beaches    Duval County      904-246-3969
Fernandina          Nassau County               904-277-3040
Macclenny          Baker County                 904-259-5091
Palm Coast         Flagler County                386-439-5290
Daytona              Volusia County               386-253-4911
Serving all of Florida  and Georgia    at     904-346-1266

EMAIL LARRY@1STPROP.COM (feel free to email your bidding packages here)

ASAP ROOF INSPECTIONS CAN PERFORM FOR YOU

wood borne debri inspections

glazing inspections

wind code strapping inspection services

tie rod inspection services

masonry inspections

threshhold and door entry inpections

 

 

 

Wind Maps by County

All Wind Maps are in PDF format.
Counties Marked as “Map not available”, need to make changes to their wind maps. Those Counties are Calhoun, Dixie, Flagler,Nassau. * = A current Wind map was not provided by the County, Please Contact the Local Government (Building Department) for wind speed information.

Alachua
Bay
Baker
Bradford
Brevard
Broward (Map Not Available)*
Calhoun (Map Not Available)*
Charlotte
Citrus
Clay
Collier
Columbia
Dade (Map Not Available)*
Desoto
Dixie (Map Not Available)*
Duval
Escambia
Flagler (Map Not Available)*
Franklin
Gadsden
Gilchrist
Glades
Gulf
Hamilton
Hardee
Hendry
Hernando
Highlands
Hillsborough
Holmes
Indian River
Jackson
Jefferson
Lafayette
Lake
Lee
Leon
Levy
Madison
Manatee
Marion
Martin
Monroe
Nassau
Okaloosa

Okeechobee
Orange
Osceola
Palm Beach
Pasco
Pinellas
Polk
Putnam
Santa Rosa
Sarasota
Seminole
St Johns
St Lucie
Sumter
Suwanee
Taylor
Union
Volusia
Wakulla
Walton
Washington

Frame Wall Construction:

The attached tables show that conventional framing, #2 spruce, pine, fir, 2×4 16 o.c. fully sheathed with minimum structural panel, is sufficient for partially enclosed/internal pressure worst case design up to 125 mph for 10′ wall heights and 140+ mph for 8′ wall heights. (AFoPA National Wood Design Manual, High Wind Edition, draft revised tables for compliance with ASCE 7-98) [See example attached.]

Masonry Wall Construction:

 Guide to Concrete Masonry Residential Construction in High Wind Areas for construction of one and two family residential buildings for basic wind speeds of 130 mph or less and exposure B.

Roof Construction:

the Southern Building Code Congress International show that common frame roofing with #2 SPF, 2×6, 24″ o.c. framing with 7/16″ minimum structural panel sheathing is sufficient to withstand the additional forces of partially enclosed/internal pressure worst case design.

Connectors: Additional roof anchorage will be needed for basic wind speeds 110 mph and above.

Example: Partially Enclosed, 2 x 4 @ 16 o/c Spruce – Pine – Fir #2

Wind Speed mph 3 sec gusts Stud Length (from Table 3.20A) Exposure B Adjustment Factor (.90) Exposure C Adjustment Factor (.78)
110 12′ – 1″ (12′ – 1″) x (.9) = 10′ – 10″ 9′ – 5″
120 11′ – 5″ 10′ – 5″ 8′ – 11″
130 10′ – 10″ 9′ – 9″ 8′ – 5″
140 10′ – 1″ 9′ – 1″ 7′ – 10″
150 9′ – 4″ 8′ – 4″ 7′ – 3″

 

Note: Exposure B – Suburban and wooded environment

Exposure C – Waterfront