HomeMy WebLinkAboutEngineering 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: July 3, 2020 Re: Tony Benitez 10310 S. Ocean Dr. Unit 508 (middle) Jensen Beach, FL 34957 It is acceptable to replace existing windows and mullion bar for the address listed above as follows: 1) S.H. - The PGT systems Series "SH 7700A" L.M.I. alum. single hung window has a Florida number NOA-#18-0430.06. 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 L.M.I. "D" approval and HVHZ. 2) H.R. - The PGT systems Series "SH 7710A" alum. horiz. roller window has a Florida NOA-#18-0627.01. 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 large & small missile "D" approval and HVHZ . 3) MULLION TUBE - The PGT Window Systems - Series "PGT" Clipped Extruded Aluminum Tube Mullion - L.M.I. has a Florida number NOA #17-0630.01. The nominal wind speed is 132 mph and the ultimate wind speed is 170 mph. It has a +170 /-170 design pressure and has a small 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 building has a type II classification and exposure category "D" for the 6th Edition of the FBC (2017). SCOPE OF WORK: New single hung, horiz. roller, & mullion bar replacement. 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 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