HomeMy WebLinkAboutPV2022-001 - Calcsp. ou -001
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/�nGF Version #94.3 - 2
February 14, 2022
Nb. S 5185
j
RE: CERTIFICATION LETTER
C Exp 1'2/31/22sTq�
Project'Job # 92621641
OF
Project Address: Cheng Residence
4701 Cortland Dr
-
"STR ONLY"
Newport Beach, CA 92625
ADigitally sign
Abe Da by
De p6e oevera /
AHJ Newport Beach
i Date;2022.02.14
Vera ' 11:50A2-08.00'
SC Office Irvine
BUILDING VISION
Design Criteria:
- Applicable Codes = 2019 CEBC/CBC/CRC, ASCE 7-16, and 2018 NDS
- Risk Category = II02/15/2022
- Wind Speed = 110 mph (3-s Gust - Vult), Exposure Category C, Partially/Fully Enclosed Method
- Ground/Roof Snow Load = 0 psf
- MP1: Roof DL = 7.5 psf, Roof LL = 20 psf
- MP2: Roof DL = 7.5 psf, Roof LL = 20 psf
- MP3: Roof DL = 7.5 psf, Roof LL = 20 psf
BY: Y.T.
- MP4: Roof DL = 7.5 psf, Roof LL = 20 psf
- MP6: Roof DL = 7.5 psf, Roof LL = 20 psf
- MP7: Roof DL = 7.5 psf, Roof LL = 20 psf
- MIPS: Roof DL = 7.5 psf, Roof LL = 20 psf
Per Section 1613.1, W -(PV)/ W -(exist roof) = 5.5%, Increase Seismic Shear Load
< 10%, -> [OK]
To Whom It May Concern,
Ajobsite survey of the existing framing system of the address indicated above was performed by a site survey team from Tesla. Structural
evaluation was based on site observations and the design criteria listed above.
Based on this evaluation, I certify that the alteration to the existing structure by installation of the PV system meets the prescriptive
compliance requirements of the applicable existing building and/or new building provisions adopted/referenced above.
Additionally, I certify that the PV module assembly including all standoffs supporting it have been reviewed to be in accordance with the
manufacturer's specifications and to meet and/or exceed all requirements set forth by the referenced codes for loading.
The PV assembly hardware specifications are contained in the plans/docs submitted for approval.
Sincerely
Abe De Vera, PE, SE
Structural Engineer
Phone: 888.765.2489, x57526
Email: adeveraPtesla.com
T - 5 L n
'At
a
22
BUILDING DIVISION
APR - 6 2022
BY E.S.
Tesla, Inc.
Version #94.3.2
16" '
16" 41
NA
16
9 41 NA
L— n 1 41" �
TV 9
16" 9
9..
Tesla, Inc.
Note: Seismic base shear is directiy proportional to rooT weiy"L.
Zone
(a) = 10.0 ft.
per
3asf/
lbs
= 1.15, YA= u.bu
sf
Portrait
-Portrait _ -
- NA
Portrait
NA -
Trib -.
NA
W -PV
NA ._
' T -actual ';
-
-
T -allow
NA
nra
NA
7 psf
Plum 9 6 176 Psfsf
.,. Y-Y:,Katters -...
e i.,.rav cieekMountT"'
STRUCTURE,ANALYSIS LOADING SUMMARY AND MEMBER CHECK MP6
xa�"f x etMembe� 4oadingSurrlm"efY�
,4,
:k�a Bopf ;P.,itcli s'�'��'�3!�2�1��# :tea ��lni>ial PttrJfAAlTlstm S45t Pw1/�reas
Roof Dead Load DL 7.5 psf x 1.04 7.8 psf 7.8 psf
PV -Dead Load ' , PN -DL. 3.0 psf: 'x 1.04
Roof Live Load RLL 20.0 psf x 1.00 20.0 psf
Snow Load } - 'SLf
Total Load (Governing,LC TL 27.8 psf 10.9 psf
Notes: 1. ps = Cs'pf; Cs -roof, Cs -pv per AJUL r Lrigure 1.4-11, c. Pi - u. 1 k—I k-) I-, re
ater Width (a) = Iu.0 R.
>tandoff Spacing
Landscap
-
3artilever , „
Landscap
._..,._.____..
uration
Landscap
aulAry Area(Interipr) _
Tri6
_ ,
read Load
W-PV
,atStandoff (Intarior)
_T-actual
of Standoff
T-allow
11
nd/ca aci Interior
DCR':.
Standoff Spacing
Portrait
Cantilever
Portrai
-: T -actual
T -allow
DCR
STRUCTURE ANALYSIS - LOADING SUMMARY ANp MEMBER,CHECK MP8
Notes: 1. ps = Cs'pf; Cs -roof, Cs -pv per ASCE 7 [Figure 7.4-1]; 2. pf = 0.7 (Ce) (Ct) (Is) pg ; Ce=0.9, Ct=1.1, Is= 1.0;
m . N,[ipgf;P,ifch.
Roof Dead Load
DL
7.5 psf
x 1.04 7.8 psf
7.8 psf
PV_Dead'.Load , -
.PV -DL '
3.0 psf,,,,
. ' x' 1 04
7 _','3.1 psf
Roof Live Load -
RLL
20.0 psf
x 1.00 20.0 psf
Snow, L'bad,`
SL'
Tota[ Load (Governing LC)
Total
".TL
27.8-psf
_
1IM9 psf. -
Notes: 1. ps = Cs'pf; Cs -roof, Cs -pv per ASCE 7 [Figure 7.4-1]; 2. pf = 0.7 (Ce) (Ct) (Is) pg ; Ce=0.9, Ct=1.1, Is= 1.0;
ZEP RARQ E,DESIGN CALCULATIONS - MP8
Y -Y Rafters' 1..`.
Ext. Pressure Coefficient (Up)
GCp (Up)
1 27
rig. 3032ueraoreGTNe
Ext. Pressure Coeffc e.(Down);
GCp (Dawn)
", 0 55 A' ,
!4 10 3-2NeiaorFasnxsaa'
Design Wind Pressure
p
p = qh (yE) (ya) (GCp); yE = 1.15, yA = 0.60
Equation 29.4-7
Wind Pressure Up (Design l UIt)
rpp,pt
-13,1 -21.7 psf_
Max Stantloff, Tributary Area (interior) _
Wind Pressure Down (Design I Ult
. n
9.6 116 psf
PV Assembly Dead Load
Notes: 1. yE = Array Edge Factor and yA = Solar Panel Pressure Equalization Factor per SEAoC PV2-2017
A , ..._.,_. u '7', 7
.,N
Wind
Zone Perimeter Width (a) = 10.0 ft.
"'�?Dtreron�
y�
N11
.,Dre ro:
Max Allowable Standoff Spacing
Landscape
16"
41"
Max Allowable Cantilever
Lan dscape9"
_
NA
Standoff Couration
nfi
Landscape
Not -Staggered
Max Stantloff, Tributary Area (interior) _
Trib
-
PV Assembly Dead Load
W -PV
3 psf / 14 be
Net Wintl Uplift aStandoff
actual
-. NA
capacdy of Standoff
T -allow
140 lbs
Standoff:Demand/Ca acit Interior
DCR`
36.5%0
_
Max Allowable Standoff Spacing
Portrait
Max Allowable Cantilever
- Portrait
Standoff Configuration
Portrait
NA
Max Standoff Tributary Area (interior)
Trib
NA
PV Assembly Dead Load
W -PV
NA
Net Wind Uplift at Standoff (Interior)
T -actual
-. NA
Uplift Capacity of Standoff
T -allow
NA
Standoff Demand/Ca aeit Interior
ccDCR
NA