HomeMy WebLinkAboutENGINEER - STRUCTURAL DESIGN
M.A. CORSON & ASSOCIATES, Inc.
ARCHITECTURE * STRUCTURAL DESIGN
412 Colorado Ave., Stuart, Fl. 34994
(772) 223-8227 * Lic. #AR91665
To: St. Lucie County - Building & Code Regulation Division Date: December 17 , 2021
Re: Maryann Corbett
10680 S. Ocean Dr. Unit 304 (middle)
Jensen Beach, FL 34957
It is acceptable to replace existing sliding glass door, single hung window and mull bar for
the address listed above with the unit as follows:
1) S.H. - The PGT systems Series "SH 7700A" L.M.I. alum. single hung window has a Florida
number NOA-#20-0401.11. It has a +80 /-110 design pressure and has a L.M.I. "D"
approval and HVHZ.
2) S.G.D. - The International Impact Building Products Series " Titan 90 " aluminum sliding
glass door with reinforcements has a Miami Dade NOA # 20-1202.12. It has a +90 / -90
design pressure. It has a small and large missile "D" approval HVHZ.
3) MULL. BARS - The Series "PGT" Clipped Extruded Aluminum Tube Mullion - L.M.I has a
Miami Dade NOA # 20-0406.03. It has a +170.0 /-170.0 design pressure and has a large
missile "D" approval and HVHZ .
The worst case scenario building design pressures of address listed above in Zone 4 is +58.7 / -
63.7 and Zone 5 is +58.7 / -78.5. The nominal wind speed is 132 mph and the ultimate wind
speed is 170 mph. The building has a type II classification and exposure category "D" for the 7th
Edition of the FBC (2020).
SCOPE OF WORK: New sliding glass door, single hung window and mull bar.
DESIGN PARAMETERS AND ASSUMPTIONS USED:
1. DESIGN CODE: Florida Building Code Seventh Edition (2020)
2. Structure Designed: Enclosed
3. Risk Category: II Exposure Category: D
4. Design Wind Velocity 170 mph End Zone Width: 4 ft
5. Mean Roof Height 70 ft Roof Pitch: 0:12 Parapet: N/A ft
6. Components & Cladding Design Pressures Used: Zone 4: +58.7 / -63.7 P.S.F. &
Zone 5: +58.7 / -78.5 P.S.F. Worst case scenario has been calculated.
7. Design Loads: Floor: N/A Roof/Dead: N/A Roof/Live: N/A Balcony: N/A Dock: N/A
Deck: N/A Stairs: N/A Fence: N/A Railings: N/A
8. Were Shear Walls Considered For Structure? N/A Not Applicable Explain Why Not:
9. Is A Continuous Load Path Provided? N/A
10. Design Soil Bearing Pressure: N/A Soil Test Reports Submitted? N/A
Thank you for your time and consideration. If you have any questions please call.
Respectfully,
Mark A Corson
Mark A. Corson A.I.A., NCARB
President