HomeMy WebLinkAboutLETTER FROM GODWIN ENGINNERING*03 D 3
GODWIN ENGINEERING AND DESIGN, LLC
8378 Foxtail Loop, Pensacola, FL 32526 1 (850)712-4219 1 chad@godwineng.com
March 14, 2019
To: St. Lucie County Building Division
2300 Virginia Avenue
Ft. Pierce, FL 34982
Re: Sexton — Residential PV Roof Mount Installation
5304 Birch Drive
Fort Pierce, FL 34982
Plan Reviewer,
RECEIVED
SCANNED
By MAR 2 6 2010
St. Lucie Countypermitting Department
St. Lucie County
This letter is regarding the installation of a new ground -mounted Solar PV system at the address
above. I have analyzed/reviewed the attached plans and have determined that the Ground Mounted
PV Structure is in compliance with the applicable sections of the following Codes and Reference
documents:
Codes:
2017 Florida Building Code 6h Ed., FBC
ASCE/SEI 7-10 Min. Design Loads for Buildings & Other Structures
References:
Aluminum Design Manual 2015.
IronRidge Exhibit EX-0001
Per FBC 2017, the Ground Mounted PV structure is considered risk category I structure and will be
subject to the following design criteria: Design Wind Speed(V ir) - 150mph 3sec gust, Exposure
Category — C
The structure is a simple column(pier) and beam (cross pipe) system. The tops of the piers are
connected in the E-W direction by the cross pipes which cantilever over and extend past the end
piers. The cross pipes are connected by proprietary IronRidge XR1000 Rails spanning up and down
the slope which cantilever over and extend past the top and bottom cross pipes. There are typically
two rails per column of modules. The modules are clamped to the rails by the IronRidge module
mounting clamps.
If the structure is constructed according to the attached drawings and in accordance with the
IronRidge Ground Mount installation manual, it will be more than adequate to support the design
wind loads.
Please see attached documents and cntiwrd you have any questions.
Sincerely,
D. Chad Godwin, PE 81360
Exp.02/28/2021
FILE Copy
BLDG:
DAiE: /fj�/��/
ELE'��=�
DATE
PLUMB:
DATE
MECH:
DATE:
1360Ir
,
A E OF ��\
�'•Ft RIOP•'G\���
�
sexton
GROUND -BASED
28357 INDUSTRIAL BLVD, HAYWARD, CA94545
Project Details
NAME
Sexton
LOCATION
Fort Pierce, FL, 34982
MODULE
Mission Solar Energy:MSE305SQ8T (40mm)
DIMENSIONS
65.53" x 39.33" x 1.57" (1,665 x 999 x40mm)
Load Assumptions
DATE
2019-03-14
TOTAL MODULES
40
TOTAL WATTS
12,200
TILT
25 deg
CONFIGURATION
5-Up
Foundation Requirements
WIND EXPOSURE
C
TYPE
Concrete
WIND SPEED
150 mph
HOLE DIAMETER
12 in.
GROUND SNOW LOAD
0 psf
MIN HOLE DEPTH
78 in.
Substructure Requirements
Foundation Loads
PIPE SIZE
3"
SHEAR
1,237 lbs.
DIAGONAL BRACING
No
MOMENT
3,092 ft-Ibs.
UPLIFT
-1,582 Ibs.
3rd Party Substructure Materials
TOTAL PIPE 212' 5"
TOTAL CONCRETE 2.65 yd 3
Array Details
Config
Repeats
Piers/Repeat
South Piers
North Piers
Cross Pipes
EW Spacing
Cantilever
Total Pipe Length
5x8
1
14
7 (8' 8")
7 (12' 11")
2 (43' 82)
7' 0"
0' 10.1"
238' 5"
`.2
* o. 1360
%af:z
i� OF
//
Last updated by Chad Godwin on 2019-03-14 12:26:05 -0700 Pagel of 5
sexton - 28357 INDUSTRIAL BLVD., HAYWARD, CA 94545
GROUND -BASED
Plan View
Side View
CANTILEVER
N S PIER 90"
SPACING
NORTHEOGE
CLEARANCE
6'8.4"ABOVE
SOUTH EDGE
CLEARANCE
i i ll1 6'2" BELOW I' 6'2" BELOW
MINIMUM 6'6" IIILLf�III * I IILIII
HOLE DEPTH
9.0.1
ia—IsI N S PIER SPACING
12" HOLEDIAMETER
Note: The Images displayed in this report are meant to represent one portionofthe array. The use ofa breakIlne indicates that the array may contiinu oAkMAJQ Pn i/
\�QO'
360
L
(ORIOP,.
///�/rs�ONA I1��G`J I ly II I
Last updated by Chad Godwin on 2019-03-1412:26:05 -0700 Page 2 of 5
sexton
GROUND -BASED
28357 INDUSTRIAL BLVD., HAYWARD, CA94545
Pipe Fittings Detail
Front View
Clamp Detail
PV MODULE
FRAME
-------
-
- -----
UNIVERSAL
-------
FASTENING
_______
OBJECT
Mid Clamp, Plan
Mid Clamp, Front
UNIVERSAL
FASTENING
OBJECT
PV MODULE
FRAME
2
Side View
RAIL
PV MODULE
FRAME
UNIVERSAL
FASTENING
OBJECT
STOPPER
SLEEVE
UNIVERSAL FASTENING OBJEC
PV MODULE
RR100D RAIL
r RAIL CONNECTOR
3-TOP CAP
3-PIPEaUBING
End Clamp, Plan End Clamp, Front
C.
360
STOPPER
SLEEVE
UNIVERSAL
FASTENING
OBJECT
RAIL
PVMODULE
FRAME
Last updated by Chad Godwin on 2019-03-1412:26:05 -0700 Page 3 of 5
sexton
GROUND -BASED
28357 INDUSTRIAL BLVD., HAYWARD, CA 94545
Grounding Diagram
III III III III
n n MINn
w
w
w
w
V IVJ IVJ (VJ
Plan View
'ONy ore Gmu�rp lap required per mntlnuoua albeney.
OCAMO • Grounding Lug'
Fault Current Min 10 AWG
Ground Path = Copper Wire
O Bonding Points <-- Fault Current Ground Path
Section New
-Grounnog Wgs son "A are mt repuhed in symeire using
ordain Enphase meontownes or certain Surymwm rn tl lea.
Equ¢merd gmuntlhy is aoftweE Win the Engage cable for
Erphose or the Ac module cents system Ice Sunpmer Na then
Imegreen EGC.
�ODF
o. 360
r
=.� r Jr=
OF
Last updated by Chad Godwin on 2019-03-1412:26:05 -0700 Page 4 of 5
Sexton28357INDUSTRIAL BLVD, HAYWARD, CA 94545
GROUND -BASED
Bill of Materials
GROUP
PART
DESCRIPTION
TOTAL CITY
RAILS & SPLICES
XR-1000-204A
XR1000, Rail 204"(17. Feet) Clear,
16
CLAMPS & GROUNDING
UFO-CL-01-Al
Universal Module Clamp, Clear
96
UFO-STP-40MM-Mt
Stopper Sleeve, 40MM, MITI
32
XR-LUG-03-Al
Grounding Lug. Low Profile
1
SUBSTRUCTURE
70-0300-SGA
SGA Top Cap at 3'
14
GM-BRC-003
Ground Mount Bonded Rail Connector -3"
32
Last updated by Chad Godwin on 2019-03-14 12:26:05 -0700
�• C�.• 6ENG
813
IN
NAL
�'X1 � TT O • 4/`
Page 5 of 5