HomeMy WebLinkAboutENGINEERINGSPECIALTY ENGINEERING CONSULTANTS, Inc.
DADE - BROWARD - PALM BEACH
October 12, 2021
Mr. Zach Ruderman
Paradise Exteriors
1918 Corporate Drive
Boynton Beach, FL 33426
Re: THAYER RESIDENCE— 7008 LAKELAND BLVD FORT PIERCE FL 34951 [R1331]
STRUCTURAL REVIEW OF ENHANCED NAILING REQUIREMENT
Dear Mr. Ruderman:
Pursuant to your request we have reviewed the enhanced nailing required for the flat roof membrane installation at the
referenced home. Our findings are as follows.
Wind Design Criteria: V=170 mph (3 second gust), Exposure C, Risk Category 2.
From the Florida Building Code, RAS 128: Psdl':-37 psf, Pmdl:-64 psf, P„d2:-84 psf, P„d3:-115 psf
Using NOA 19-0311.04 Polyglass USA the maximum pressure using E(4) is -52.5 psf.
The base sheet is installed 8" on center along the 4" wide lap and then 3 additional staggered rows 8" on centered. The
tributary area per fastener is 8xl 1=88 square inches. (4 additional rows staggered, 8" on center for 133 % spacing)
The Geld nailing (Zone 1') is acceptable since 37 < 52.5.
Next check Zone 1: 52.5/64 * 8" o/c = 6.6" spacing. Use a spacing of 6" on center for Zone I
Next check Zone 2: 52.5/84 * 8" o/c = 5.0" spacing. Use a spacing of 5" on center for Zone 2.
Next check Zone 3: 52.5/115 * 8" o/c = 3.65"* 1.33 = 4.86" spacing (4 rows). Use a spacing of 4" on center for Zone 3.
There is (1) flat roof area, (Al) 22' x 16'
.
Using approximated Eave Height (h) a[ 10', Zone 3 becomes a 2'-0" x 6'-0" area at the corners. Zone 2 shall be the
remaining 6'-0" wide roof perimeter area. Zone 1 will be the 6'-0" wide perimeter layer inside Zone 2. Any remaining
area of the low slope roof shall be Zone I Prime (Zone 1').
The (Al) will have 2'-0" x 6'-0" Zone 3 areas at the comers. Zone 2 will be the remaining 6'-0" wide roof perimeter.
Zone 1 will be the next 6'-0" wide roof perimeter inside Zone 2, the remaining area of the flat roof section.
*Please See Diagram
We hope that you find this information helpful and should you have any questions please feel free to call onus.
1
D. Adam
LeBla
Vice President' i f Design
t
State of Florida: v
Registered Professional Engineer: #0 701
Certificate of Authorization: #009217
Matthew Barnes
Project Engineer
1599 SW 30"' Avenue, Suite 20 - Boynton Beach, FL 33426 - Office: 561-752-5440 - Fax: 561-752-5542
SPECIALTY ENGINEERING CONSULTANTS, Inc.
DADE - BROWARD - PALM BEACH
Flat Roof Zones
1599 SW 30'� Avenue, Suite 20 - Boynton Beach, FL 33426 - Office: 561-752-5440 - Pax: 561-752-5542
CLIENT INFORMATION PROJECT INFORMATION SPECIALTY ENGINEERING
CONSULTANTS, Inc
1599 SW 30th AVE.
1918 CORPORATE DRIVE UNDERLAYMENT ATTACHMENT SYSTEM s0rn QN BEACH, FL 33426
BOYNTON BEACH, FL 33426 AND NAIL/TINCAP PLACEMENT
DADE - BROWARD -PALM REACH
FL. CA #009217
PARADISE EXTERIORS TYPICAL FLAT ROOF (ENHANCED)
SUITE
*NOA 19-0311,04, E(4) SYSTEM
0561 - 752 - 5440 OFFICE
561 - 752 - 5542 FAX
6" ENDLAP ROOF UNDERLAYMENTS PER
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DISTANCE BEP VEEN
8„ 8" MAX. BUT ROWS IS 1 is 4
*8" ZONE 1 PRIME MAY BE LESS BASED THERE ARE USUALLY 3 ROWS,
6" ZONE 1 ON WIND LOAD.
5" ZONE 2
(ZONE 3 BELOW) 6" ENDLAP ROOF UNDERLAYMENTS PER
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