HomeMy WebLinkAboutENGINEERING & TESTINGGGANNED
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Engineering & " Testing Co.
7450 Griffin Road, Suite 140, Davie, FL 33314 RECONT_D
Phone: (954)581-7115, Fax: (954)581-2415
www.cebb.net MAY ® 4 2018
April 13, 2018
ST. Lucie County, Permitting
Project:
Address:
Roofing Contractor:
RAS NO:
NOA:
Deck System Type:
Existing Residence -Low slope Reroof
151 SE Bonita Court, Port St. Lucie, FL 34983
Roofing Systems of Florida, Inc.
117 Calculation
15-0622.21 Flintlastic Self Adhered Roofing Systems Over Wood Decks
E(2) Page 13 of 19 of NOA: Base sheet mechanically fastened
Mean Roof Height = below: 20 feet
RAS 128 Wind Uplift Pressures: p1=
as per RAS 128 (Tabel 1-Exposure Category "C" ), FBC 2017
NOA Design Pressure: pd noa=
NOA-Side lap row: c slr=
NOA-Side lap spacing: a slr=
nw=net width (ft)
sh=sheet width (in)
slw=side lap width (in)
nl=net length(ft)
nw=(sw-slw)/12
nl=100/nw
fn= number of fasteners per spacing
b=nl (net lentgth per row)
a=fastener spacing (in)
-slr=side lap row
-clr=center lap row
c= number of rows @spacing "a"
-sir=side lap row
-clr=center lap row
d=number of fastener per square
side lap row
d slr=(fn/a s1r)*(12/1)*(b/1)*(c slr/ 1*1)
�d slr=, 65.98
42.8 p2= 71.7 p3=
52.5
1 NOA-Center lap row:
6 NOA-Center lap spacing:
sw=
39.375
slw=
3
nw=
3.031
nl=
32.990
fn= 1
b=
108
c clr=
a clr=
nl
center lap row
d clr=(fn/a c1r)*(12/1)*(b/1)*(c clr/ 1*1)
I` d clr= 263.92
4
6
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Area per fastener
as= area per square (sf/square)
fa= fastener area (sf)
fa=as/(d slr+d clr)
Fastener Value Calculation
pd noa=maximum NOA design pressure (psf)
fy=fastener value (lb)
p=design pressure
p1 field : p2 perimeter : p3 corner
fs=required fastener spacing
rs=row spacing
fy= pd noa*fa fy= . 15.914
rs=nw*12/(c slr+c clr) rs= 7.275
rsp=proposed row spacing for perimeter (4)
rsp2=(nw*12)/(1+5) rsp2= 6.063
rsp=proposed row spacing for corner areas (5)
rsp3=(nw*12)/(1+6) rsp3= 5.196
Field Zone Spacing Requirement
fs= (fy*144)/(p1*rs) fs= 7.360
Perimeter Zone Spacing Requirement
fsp=(fy*144)/(p2*rsp2) fsp= 5.272
Corner Zone Spacing Requirement
fsc=(fy*144)/(p3*rsp3) fsc= 4.083
as= 100
fa= 0.303
4 rows in the field spaced at 6.063
5 rows in the field spaced at 5.196
6 Inches; 6" o/c lap and 4 rows @ 6" o/c
required for a total of five (5) rows;
5 Inches; 5" o/c lap and 5 rows @ 5" o/c
required for a total of six (6) rows;
4 Inches; 4" o/c lap and 6 rows @ 4" o/c
required for a total of seven (7) rows;
Prepared by:
CeBB Engineering & Testing Co. (CA#9807)
04/13/18
Eduard V. Badiu, P.E.
#59997
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