HomeMy WebLinkAboutAPPROVED, -Lundgren letter-signed
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 21, 2020
Re: Ned Lundgren
9900 S. Ocean Drive, Unit 706 (middle unit)
Jensen Beach, Fl. , 34957
It is acceptable to replace existing single hung and sliding glass door openings for the
address listed above with the units as follows:
1) S.H.- The PGT Window Systems "SH 7700A" Impact Aluminum single hung window has a
Miami Dade NOA #20-0401.11. The nominal wind speed is 132 mph and the ultimate wind
speed is 170 mph. It has a +80 /-110 design pressure and has a small missile "D" approval and
HVHZ. This unit is located in a Zone 4.
2) S.G.D.- The International Impact Building Products Series "Titan 90" Aluminum S.M.I.
Sliding Glass Door has a Miami Dade NOA #18-0412.01. The nominal wind speed is 132 mph
and the ultimate wind speed is 170 mph. It has a +90 /-90 design pressure and has a small
missile "D" approval and HVHZ . This unit is located in a Zone 4.
SCOPE OF WORK: New single hung window and sliding glass door.
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: +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