HomeMy WebLinkAboutAPPROVED, Engineer letter-signed (2)
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: March 22, 2020
Re: Anna Porro
9900 S. Ocean Drive / Oceana N. II /Unit 1508
Jensen Beach, Fl. , 34957
It is acceptable to replace existing sliding glass door, front entry door, & single hung window
openings for the address listed above with the units as follows:
1) S.H. - The CGI Window & Doors Inc. - Sentinel Series "110” aluminum single hung
Window has a Miami Dade NOA # 20-0722.09. The nominal wind
speed is 132 mph and the ultimate wind speed is 170 mp h. It has a +80 /-85 design pressure.
It has a small and large missile "D" approval 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. The nominal wind
speed is 132 mph and the ultimate wind speed is 170 mp h. It has a +90 / -90 design pressure.
It has a small and large missile "D" approval HVHZ.
3) Entry door - The JELD-WEN “ Design-pro/Smooth-pro/Studio” fiberglass entry door
has FL. #16708.1. The nominal wind speed is 132 mph and the ultimate wind speed is 170
mph. It has a +65 / -65 design pressure. It has a small and large missile "D" approval HVHZ.
The worst case scenario building design pressures of addr ess listed above in Zone 4 is +58.7 / -
63.7 and Zone 5 is +58.7 / -78.5. The building has a type II classification and exposure category
"D" for the 6th Edition of the FBC (2017).
SCOPE OF WORK: New sliding glass door, front entry door, & single hung window.
DESIGN PARAMETERS AND ASSUMPTIONS USED:
1. DESIGN CODE: Florida Building Code Sixth Edition (2017) with 2020 Supplements using
ASCE 7‐10
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 153 ft Roof Pitch: 0:12 Parapet: N/A ft
6. Components & Cladding Design Pressures Used: Zone 4: +50.8 / -55.1 P.S.F. &
Zone 5: +50.8 / -68.0 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