HomeMy WebLinkAboutENGINEERING SCOPE OF WORK PAUL WELCH INC.
Mechanical Electrical Civil Engineering
1984 S.W.Biltmore St. Suite#114
Port Saint Lucie,FL 34984
Phone(772) 785 - 9888
Fax(772) 785-9933
December 3,2021
Re: RE-ROOF
1066 NETTLES BLVD
JENSEN BEACH, FL.
SCOPE OF WORK:
-Remove existing roofing on sun-deck J ��
-Renail existing deck w/#10 wood screws at 6" o.c. max `v
-Install new roofing per plan
DESIGN CRITERIA:
GOP
FBC 2020
ASCE7-16
PROJECT DATA:
Building Height(R)= 12
A (ft)= 5
Mean Roof Height(R)= 12
Roof Pitch= 0.3 /12
Shape= FLAT/MONO
Adjustment Factor= 1.00
Improtance Factor= 1.00
Wind Velocity= 170 mph (3 see gust)
Exposure= D
Enclosure Class= PARTIALY ENCLOSED
Inter.Press. Coef = - 0.18
APPLIED UPLIFT_ DESIGN PRESSURES ON ROOF (ASCE 6-3) :
Zone 1 (Field)= 73.10 ( - PSF)
Zone 2(Perimeter/Ridge) = 96.40 ( - PSF)
Zone 3 (Corners)= 131.40 ( - PSF)
DEC 0 3 2021
= = PAu WELCH MC.
MECH= LECT-CIVIL EPlG.
- 9984 BILTMORE ST.#114
- : PgRT SAINT LUCII~,FL 349
PAUL W&CH P.E.
FLA IIEG NO.26945
ROOF DATA:
Manufacturer: polyglass usa
Type: mod bit
NOA#: 17-0825.01
System Type: E(10)INSULATED &B(3)NON-INSULATED
Design Pressure: -90 (-PSF)
Membrane Type: ELASTOFLEX S6 G TORCH APPLIED
Deck: 19/32 "Plywood
Base Sheet: XTRAFLEX SBS GLASS BASE
Fasteners: INSULATION FASTENED WITH 3" ROUND OMG GALVALUME
STEEL PLATES AND OMG HEAVY DUTY FASTNERS
(spacing per base sheet attachment requirements)
,
BASE SHEET ATTACIEMNT REOUIREMENTS:
ZONE 1 : Base sheet attached to deck with Fasteners as specified above
(Field) at 6 "O.C. in ( 4 )rows. One row is in the side lap. The other rows
are equally spaced approximately # " O.C. in the field of the sheet.
(METHOD PER NOA) Design Pressure(-PSF): -90
ZONE 2 : Base sheet attached to deck with Fasteners as specified.above
(Perimeter/Ridge) at 5 "O.C. in ( 4 )rows. One row is in the side lap. The other rows
are equally spaced approximately # "O.C. in the field of the sheet.
(ENHANCED FASTENERS) Design Pressure(-PSF): -97.03
ZONE 3 : Base sheet attached to deck with Fasteners as specified;above
(Corners) at 3 "O.C. in ( 4 )rows. One row is in the side lap.; The other rows
are equally spaced approximately # " O.C. in the field of the sheet.
(ENHANCED FASTENERS) Design Pressure(-PSF): -161.71
NOTE:AN 18" STRIP OF ISO BOARD TO BE INSTALLED ADJACENT TO RESIDENCE TO
PROVIDE PITCH AWAY FROM THE RESIDENCE AND INSTALLED WITH OMG 3"
GALVALUME STEEL PLATES AND OMG HEAVY DUTY FASTNERS AT A 2:1 FT SQ RATIO
AND THE ELASTOFLEX SBS GLASS BASE SHALL BE TORCH APPLIED UNDER THE
INSULATION
DEC 0 3 2021
IaAu_ WELCH INC.
- = MECH• LECT-CIVIL ENO.
- 1084 BILTMORE ST.#114
/ PORT SAINT LUCIE,FL 34984
PAUL WELCH R.E.
FL4 REG NO.29945
r- •
ATTACHMENT CALCULATIONS FOR ENHANCED FASTENERS FOR ZONE 2:
PER RAS 117
FS= ,.ff X 114
(P)X(RS)
FS=fastener spacing(in)
fy =DPX(sq.ft. lfastener) _ -33.16 (lb /fastener)
P =(design pressure req'd for zone 2) = 96.4 (Ib /ft2)
RS=row spacing = 9.84375 (in)
r
-33.16 X 144
FS= ------------------- _ -5.0326 (in /fastener) fasteners @ 5 "O.C.
96.4 X 9.84375
ATTACHMENT CALCULATIONS FOR ENHANCED FASTENERS FOR ZONE 3:
PER RAS 117
FS= , X 114
(P)X(RS)
FS=fastener spacing(in)
fy =DPX(sq.ft. /fastener) _ -33.16 (Ib/fastener)
P =(design pressure req'd for zone 3) = 131.4 (lb /ft2)
RS=row spacing= 9.84375 (in)
-33.16 X 144
FS= ------------------- _ -3.69211 (in /fastener) —>fasteners @ 3 "O.C.
131.4 X 9.84375
DECK INSTALLATION:
EXISTING DECK TO BE SCREWED WITH#10 WOOD SCREWS AT 6" O.C.
All work to be in compliance with product approval, manufacturer's specifications, and the
Florida Building Code 2020.
Submitted by:
PAUL WELCH INC.
Paul Welch,P.E. DEC 0 3 2021
Reg.No 29945 PAUX WFMCM INC.
PW:NS MECH-ELECT-CIVIL ENO.
1984 BILTMORE ST.#114
PORT SAINT LUC:IE,FL PAUL WELCH 3498�F
P E
/ PLA REG NO.29946