BLD2021-0529_Structural_Calculations_4.13.2021_8.58.16_AM_2142049WIND LOAD VARIABLES
MODULE BLK-G6+/AC
340
WIDTH 40.55 in
LENGTH 68.50 in
AREA = L (in) * W (in) * (W/inW)
VELOCITY PRESSURE
K� = (HEIGHT AND EXPOSURE) 0.7
Kzt = (SPEED UP FACTOR) 1.12
Kd = (WIND DIRECTIONALITY) 0.85 MPH
V = (BASIC WIND SPEED) 110 MPH
= (IMPORTANCE CATEGORY) 11:1.00
qh = 0.00256 * Kz * Kr *Kd* V * I
DESIGN UPLIFT
ATTACHMENT TYPE Lag Bolt
F = (DESIGN UPLIFT LOAD)
FORCE PER ATTACHMENT
MTOTAL = M1 + M2 + M3
FTOTAL _ (F1 + F2 + F3) / MTOTAL
SAFETY FACTOR
SAFETY FACTOR, F/FTOTAL > 1.0
WIND LOAD
MINIMUM ATTACHMENTS
GC . _ (EXTERNAL PRESSURE COEFFICIENT)
GCP = 0 (ARRAY IS AN OPEN STRUCTURE)
GC = (EXTERNAL PRESSURE
COEFFICIENT)
0.8
w
19.29ft2
P = qh * (GCP - (GC j = 0))
16.51 psf
o
N = (NUMBER OF MODULES)
30
0
F, = P * A * N 9557 psfo
M = (NUMBER OF FLASHINGS) 13
F2
= P * A * N
4779 psf
o
5/16" LAG BOLT
761 Ibs/attachment
20 GC = -2.0
717 Ibs/attachment P = qh * (GCP - 0) 41.28 psf Z
0
N = (NUMBER OF MODULES) 0 w
F3 =P*A*N 0psf 0
OK M3 = (NUMBER OF FLASHINGS) 0 �
A MINIMUM OF 20 FLASHINGS REQUIRED
WITH 1 ATTACHMENT(S) PER FLASHING(S) WITH 2.0" DEPTH OF LAG IN DOUGLAS FIR
WEIGHT LOAD
QUANTITY WEIGHT (Ibs) TOTAL (Ibs)
MODULES 40 43.9 1756.00
FLASHINGS 84 1.72 144.82
RAIL LINEAR FT 374 0.72 269.26
END CLAMP 36 0.05 1.80
MID CLAMP 62 0.08 4.96
MICROINVERTERS 40 2.38 95.20
TOTAL 2272.03
WEIGHT LOAD = Ibs / = TOTAL Ibs / (AREA * N) 2.94
TOTAL WEIGHT LOAD OF SOLAR EQUIPMENT IS 2.94 Ibs / ft2
WEIGHT LOAD NOTES:
TOTAL NUMBER OF ATTACHMENTS IN SYSTEM IS DICTATED
BY WIND LOAD REQUIREMENTS OR BY MAXIMUM SPAN
REQUIREMENTS OF RAIL MANUFACTURER, WHICHEVER IS
GREATER.
MINIMUM ATTACHMENTS PER WIND LOAD: 20
MINIMUM ATTACHMENTS PER SPAN OF 6ft: 84
NUMBER OF ATTACHMENTS REQUIRED: 84
PUGET SOUND SOL
805 Rainier Ave S
Seattle, WA 98144
Tel: 206-706-1931
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0 PREUMINARY DESIGN 41
REV DESCRIPTION DATE
DRAWN BY AY
CHECKED BY AL
SOLAR NEXUS #: 13182
SALES: JEFF ROSS
PM: BILL ULSUND
PM CELL: (253) 951-0385
WIND AND WEIGHT LOAD
CALCULATIONS
PV-103
A MINIMUM OF 20 FLASHINGS REQUIRED
WITH 1 ATTACHMENT(S) PER FLASHING(S) WITH 2.0" DEPTH OF LAG IN DOUGLAS FIR
WEIGHT LOAD
QUANTITY WEIGHT (Ibs) TOTAL (Ibs)
MODULES 40 43.9 1756.00
FLASHINGS 84 1.72 144.82
RAIL LINEAR FT 374 0.72 269.26
END CLAMP 36 0.05 1.80
MID CLAMP 62 0.08 4.96
MICROINVERTERS 40 2.38 95.20
TOTAL 2272.03
WEIGHT LOAD = Ibs / = TOTAL Ibs / (AREA * N) 2.94
TOTAL WEIGHT LOAD OF SOLAR EQUIPMENT IS 2.94 Ibs / ft2
WEIGHT LOAD NOTES:
TOTAL NUMBER OF ATTACHMENTS IN SYSTEM IS DICTATED
BY WIND LOAD REQUIREMENTS OR BY MAXIMUM SPAN
REQUIREMENTS OF RAIL MANUFACTURER, WHICHEVER IS
GREATER.
MINIMUM ATTACHMENTS PER WIND LOAD: 20
MINIMUM ATTACHMENTS PER SPAN OF 6ft: 84
NUMBER OF ATTACHMENTS REQUIRED: 84
PUGET SOUND SOL
805 Rainier Ave S
Seattle, WA 98144
Tel: 206-706-1931
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0 PREUMINARY DESIGN 41
REV DESCRIPTION DATE
DRAWN BY AY
CHECKED BY AL
SOLAR NEXUS #: 13182
SALES: JEFF ROSS
PM: BILL ULSUND
PM CELL: (253) 951-0385
WIND AND WEIGHT LOAD
CALCULATIONS
PV-103
WEIGHT LOAD = Ibs / = TOTAL Ibs / (AREA * N) 2.94
TOTAL WEIGHT LOAD OF SOLAR EQUIPMENT IS 2.94 Ibs / ft2
WEIGHT LOAD NOTES:
TOTAL NUMBER OF ATTACHMENTS IN SYSTEM IS DICTATED
BY WIND LOAD REQUIREMENTS OR BY MAXIMUM SPAN
REQUIREMENTS OF RAIL MANUFACTURER, WHICHEVER IS
GREATER.
MINIMUM ATTACHMENTS PER WIND LOAD: 20
MINIMUM ATTACHMENTS PER SPAN OF 6ft: 84
NUMBER OF ATTACHMENTS REQUIRED: 84
PUGET SOUND SOL
805 Rainier Ave S
Seattle, WA 98144
Tel: 206-706-1931
W X
'off
ooa
W
oak
�o
J o00
J o ate`
�' >
w �J
O O szo
_ j w�
J C)0 FL co
�'wo
0.
0 oa
U) O 2 oz<
Y _ 0 3n
W o0
Q cow
� or
o
o
boy
oaw
�o
ioa
3
F -0
u�
w�
owy
r-202
0 PREUMINARY DESIGN 41
REV DESCRIPTION DATE
DRAWN BY AY
CHECKED BY AL
SOLAR NEXUS #: 13182
SALES: JEFF ROSS
PM: BILL ULSUND
PM CELL: (253) 951-0385
WIND AND WEIGHT LOAD
CALCULATIONS
PV-103
r-202
0 PREUMINARY DESIGN 41
REV DESCRIPTION DATE
DRAWN BY AY
CHECKED BY AL
SOLAR NEXUS #: 13182
SALES: JEFF ROSS
PM: BILL ULSUND
PM CELL: (253) 951-0385
WIND AND WEIGHT LOAD
CALCULATIONS
PV-103
WIND AND WEIGHT LOAD
CALCULATIONS
PV-103