HomeMy WebLinkAboutSOLR-20-0191 �� City Of Arcadia CA + � baa y Permit,N&'501112-10:4619.1
Development Services Department " ' " �' � PermttType 501ar';
240 West Huntington Drive,Post Office Box 60021 cap
Arcadia,CA 91066-6021
44444,44W44-,:444, 4,4 Solar4Resident�al
'4444 4:1,4 444
'7:1'14( - 1 (626)574-5416 g � a Permit S�tatus Issued:�.
44 444,44444
AC ;Di / / I Expiration:
Issue Date 02 04 2020
Addr NO. Dir Prefix Street Name Street Suffix Unit City,State,Zip Parcel Number
330 SHARON • RD Arcadia,CA 91007-8045 5785007048
Contacts
RICK WANG Owner ENERGY PLUS Contractor
1051 W COLUMBIA WAY 205,LANCASTER,CA 93534
(626)533-4878 (661)718-2070 736839
Description:ROOF MOUNTED SOLAR SYSTEM 24 Valuation: $ 0.00 Tenant
MODULES/MICRO INVERTERS. 100 AMP SUBPANEL
Total Sq Feet: 0.00 Plan Check# Plan#
Fees Amount Payments Amount Paid
Building Plan Check Fee Residential $50.00 Total Fees $324.72
Distribution Panel $16.48 Cash/Receipt#REC-03748-20 $324.72
Electrical Permit Issuance Fee $47.01
Fire Plan Check Fee Residential $50.00 Amount Due: $0.00
Inverters $77.78
Panels $82.45
Solid Waste Management Fee 2 $1.00
Total: $324.72
CALLS FOR INSPECTIONS
Request for inspection by telephone at 626-574-5450. Leave a message
b ��G - requesting the address,timeframe and what inspection item is needed.
This permit/plan review expires by time limitation and becomes null and
void if the work authorized by the permit is not commenced within 180 days
ge 1l(60 5.10 I e. G7c��C7�l� Ap... 17l1v17.1 rom the date of issuance or if the permit is not obtained within 180 days
from the date of plan submittal.This permit expires and becomes null and
void if any work authorized by this permit is suspended or abandoned for 180
consecutive days or if no progressive work has been verified by a City of
Arcadia building inspector for a period of 180 consecutive days.
103° e
10,
February 04, 2020
Issued By: Date
February 04,2020 Page 1 of 1
ARe
G~4 oFF y�, a
. kq PERMIT/PL. AN REVIEW APPLICATION
toff, Development Services Department,240 West Huntington Drive,Post Office Box 60021
ammaal,y of Nam` Arcadia, CA 91066-6021, (626) 574-5416,Fax (626) 447-9173
City of
Arcadia
LICENSED CONTRACTOR'S DECLARATION WORKERS'COMPENSATION DECLARATION
I hereby affirm under penalty of perjury that I am licensed under provisions of I hereby affirm under penalty of perjury one of the following:
Chapter 9(commencing with Section 7000,of Division 3 of the Business and
Professions Code,and my license is in full force and effect. ❑ I have and will maintain a certificate of consent to self-insure for workers'
License Class (_-1 0
Signature of Contractor 1
`License No. 7 36. ..)-31 Exp. Date 6/30/21 compensation, as provided for by Section 3700 of the Labor Code, for the
_ !V performance of the work for which this permit is issued.
--
WNER-BUILDER DECLARATION
tirf have and will maintain workers'compensation insurance,as required by Section
0 I hereby affirm under penalty of perjury that I am exempt from the Contractors 3700 of the Labor Code,for the performance of the work for which this permit
License Law for the following reason(Section 7031.5,Business and Professions is issued.My workers'compensation insurance carrier and policy numbers are:
Code.Any city or county which requires a permit to construct,alter,improve, Carrier SI-P"*.c— CO An V ( ci
demolish,or repair any structure,prior to its issuance,also required the applicant
for such permit to file a signed statement that he or she is licensed pursuant to the Policy Number 9 Z3 7
provisions of the Contractors License Law(Chapter 9(commencing with Section (This section need not be completed if the permit is for one hundred dollars or less)
7000)of Division 3 of the Business and Professions Code)or that he or she is
exempt there from and the basis for the alleged exemption. Any violation of ❑ I certify that in the performance of the work for which this permit is issued,I shall
Section 7031.5 by any applicant for a permit subjects the applicant to a civil not employ any person in any manner so as to become subject to the workers'
penalty of not more than five hundred dollars($500)): compensation Laws of California,and agree that if I should become subject to the
workers'compensation provisions of Section 3700 of the Labor Code,I shall
❑I, as owner of the property, or my employees with wages as their sole forthwith comply with those provisions.
compensation,will do the work,and the structure is not intended or offered for / `
sale(Section 7044,Business and Professions Code:The Contractors License Date Z(LI J 4—�2J SignatorI /
Law does not apply to an owner of property who builds or improves thereon,
or who does such work himself or herself or through his or her own
employees,provided that such improvements are not intended or offered for WARNING: Failure to secure Workers'Compensation coverage is unlawful,
sale.If,however,the building or improvement is sold within one(1)year of and shall subject an employer to criminal penalties and civil fines up to one
completion,the owner-builder will have the burden of proving that he or she hundred thousand dollars($100,000),in addition to the cost of compensation,
did not build or improve for the purpose of sale). damages as provided for in Section 3706 of the Labor Code, interest, and
attorney's fees.
❑I, as owner of the property, am exclusively contracting with licensed
contractors to construct the project(Section 7044,Business and Professions
Code:The Contractors License Law does not apply to an owner of property CONSTRUCTION LENDING AGENCY
who builds or improves thereon,and who contracts for such projects with a I hereby affirm under penalty of perjury that there is a construction lending agency
contractor(s)licensed pursuant to the Contractors License Law). for the performance of the work for which this permit is issued (Section 3097,
Civil Code).
❑ I am exempt under Section 7044,Business and Professions Code,for this reason:
Lender's Name
Date Signature Lender's Address
IMPORTANT: APPLICATION IS HEREBY MADE TO THE BUILDING OFFICIAL FOR A PERMIT SUBJECT TO THE CONDITIONS AND
RESTRICTIONS SET FORTH ON THIS APPLICATION AND THE FOLLOWING:
1. The City's approved plans and permit inspection card must remain on the job site for use by City inspection personnel.
2. Final inspection of the work authorized by this permit is required.A Certificate of Occupancy must be obtained prior to use and occupancy of new buildings
and structures. ,
3. Per South Coast Air Quality Management District(AQMD)regulations,renovation and remodeling work that results in the removal,stripping,or altering
of asbestos containing materials requires an asbestos survey and removal prior to disturbing the asbestos.Please contact AQMD at(909)396-2000 for
further information. \
ame `��u,�n ctib�S.\\-ti Title f(,{A i'* k ✓1s9—
PRINT NAME
I certify that I have read this application and state that the above information is co ect and that I am the owner or duly authorized agent of the owner.
I agree to comply with all City ordinances and State Laws relating to building onstruction. I hereby authorize representatives of the City of
Arcadia to enter upon the above-mentioned property for inspection purposes. f
Signature t (� ate 2"/L-11 La
Table of Contents: Project Notes: s w Cash PV-1
Page# Description 1. One story,Flat Tile @ 20 degree pitch facing azimuth 180 degrees for Si t"�
2. Roof structure consists of 2"x 8"rafters @ 24"O.C.with a max top chord span of 14' c 9 6 kW
PV-1 Site Plan
3 Total solar module square footage of:480
PV-2 Labels,Signage 4. Parcel#5785-007-048
PV-3 Single Line Diagram _ µ 24-SunPower SPR-A400-G-
"`" , - .. • AC Modules[SL 1]
PV-4 Detailed Electrical Plan ,i f' -
-
The proposed project is designed to meet the following electrical and building codes: - " 9n><• rte. 24-SunPower SPWR-A4 Ml-
PV-5 Material Data Sheets-Modules
2019 CA Residential Code 2019 CA Plumbing Code "•'— `
�.,,._. ., •-----Aa, croinverters[SL 1]
PV-6 Material Data Sheets-Rackings 2019 CA Mechanical Code 2019 CA Energy Code
PV-7-13 Ruoteoa4DalaSbeels/bbuohvgeetails/Gruuudw6Deraill/ULUsrivgs/EleetriedCalNlariuvs
2019 CA Electrical Code 2019 City of LA Fire Code
2019 CA Green Code 2019 City of LA Electrical Code
2019 National Electrical Code 2019 Building Energy Efficiency Standards ;,g i r�,,'
N I Shaarron Rd y ,V.1. � � Construction Notes: o
fV
w __ E r.. ' * °�'I'` .'4,11.All conduit,fittings,boxes comply with NEC 314.15A. �+
°qs �` �r i �' Electrical equipment shall be listed bya Cityof Los Angeles rec-
ognized
^ p CD
s s� Nom,. s,� „ s electrical testing laboratory or approved by the depart- a O
Axl *mow *,. .r, h C7 00
3l t .ii' ment IDA a..l -.A ':
. a�, 't' t, f a pc 1 2.All equipment shall be installed in accordance with the Fl eel et M '
1 ,. ' ' manufacturers installation instructions. W ,.1~ :� M �l�
." 3.All outdoor equipment shall be rain tight with minimum w7 M t"'1 N .�
y , f'" "° ' ' , •. : NEMA-3R rating. p. W M ,o c
�z_
t are approximate and require field verification.
e� --- �. 4.All locations a r
�Tit,.;.-..' I •I 5.PV array shall not cover any mechanical or plumbing vents.
e n o l n e e w a - �� r:�
65,w.euew„aaac acro.sie.IB r,+..Y J ...
we lBBII 99B 1775
""°' '4"°.
°°a° """"""°" I 6.PV array shall not exceed maximum roof height or 18"above
,..FEsslo i ,__ 1, ., roof surface at any point.
,oOg.PR,''J ; r T; AC Disonoect
°�,',/. m �. I New 100A sub-panel 7.All interior and exterior conduit,enclosures,raceways, cable X
5 * " *. }. �A \;,--- *+"� assemblies,junction boxes and disconnects that contain photo- Contractor:ERIC WEDELL
° ' LL -' voltaic circuits shall be labeled with the words"Warning:Photo-
Rj. CNR. AQP _ `: ��//�
910FCA.*� 1 ., Existing 150A main ,,% • ti voltaic Power Source"in accordance with the provisions set forth /U�`("
service paned: in fire code 605.11.1 through 605.11.1.4.Such labeling shall be
01/30/2020 ' e* : I, b ,--.. located at 10 foot intervals,within 1 foot of turns,bends and
qy ,;° • f Install Crew Lead:Brian Namm
VSE Project Number:U3002-0130-201 3 ,' ,, er - I within 1 foot on either side of penetrations of roof/ceiling assem-
Vec1orSbucWrel Engnearnghasreviewed Ihaeaisbngs:r clan s. w
wlh load rg from Ne solar array and lag screw rdnnecgansWNe : blies,walls or barriers as required by fire code 605.11.1.4. Energy Plus Solar
•ndcSghamngstSr,C rynocs.M9uhg system. abclsg
andaAoNersWCWrerspectsomhedesi na,ebyhle W and -,"'.4.0,...:;;;%`-„:, '•^{
all,nrernanstrvcwmlaspecsmllredes�gnarsby others1rei , 1051 W Ave M#205
Elecbvelis by others unbss dampedby Dean La kRP, if ''M f ! f=' C
I' I , �^ 1� ? 8a Construction foreman to confirm final conduit runs with Lancaster,CA 93534
c tr t c; 4w r r' •'1;' r-7.,.'4,:.-"#' , 1$ customer. 661-718-2070
f,,`r"". e,i. � . t l�; , �' n rpt License#736839
NES a "r "�p +s ` ' r 9.All exposed conduit to be painted to match existing colors. C-10 Exp.6/30/2021
�S mf�
AFFIDAVIT SELF-CERTIFICATION
FOR COMPLIANCE OF SIM-E ALARMS
AND CARBON MONOXIDE ALARMS
Property Address: 3 3 0 -51-1 A<9....o t..1 12.0.
Permit Number: 60C...9,- 20 -01e4-1 _
Brief Job Description: G1 k4J _ N A.-422.r 1
Number of smoke alarms installed: - 3
Numberof carbon monoxide alarms installed: Z.
When alterations,,repairs or additions requiring a permit occur, or sleeping rooms are created,
ti
Smoke alarms shall be installed in each sleeping room, and outside each separate
sleeping area in the immediate vicinity of the bedrooms, and on each additional story of the
dwelling, including basements and habitable attics as required, by Section R314 of the 2016
California Residential Code (CRC) and California Health and Safety Code Section 13113.7.
For dwellings or sleeping units containing fuel burning appliances or having attached
garages, carbon monoxide alarms shall be installed outside each separate sleeping
area in the immediatevicinity Of the bedrooms, and on each additional story of the
dwelling, including basements as required by Section R315 of the of the 2016, California
Residential Code (CRC). -
Multi-purpose alarms (combination carbon monoxide and smoke alarms) may be used.
All alarms shall comply with requirements for listing and approval by the Office of the State Fire
Marshal. htip://osfm,fire.ca.qov/liccnsinglistings/licenselisting bml searchcotest php
As owner of the above referenced property, I hereby certify that the smoke alarms and carbon
monoxide alarms have been installed in accordance with the manufacturer's instructions and in
compliance with the code sections referenced above. .
I declare under penalty of perjury that th f regoing is true and correct, and that this
declaration was executed on (Date) O -1v . at Arcadia, California.
n( �
Owner's Name (printed/t,• -d : 1�1- �% t t .
Signature of Owner: / }� .
O, /G/
This affidavit must be returned to the City of Arcadia inspector prior to final inspection
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SECOND FLOOR PLAN
( .SIVI*KE ALARM I., CARBON k1ONOXIDE ALARY
iVECTOR.
E n G t n E E R S
VSE Project Number:U3002.0130.201
January 23,2020
Energy Plus Solar
1051 W.Ave M#205
Lancaster,CA 93534
REFERENCE: Wang,Rick Residence:330 Sharon Road,Arcadia,CA 91007
Solar Array Installation
To Whom It May Concern:
Per your request, we have reviewed the existing structure at the above referenced site. The purpose of our review was to
determine the adequacy of the existing structure to support the proposed installation of solar panels on the roof as shown on
the panel layout plan.
Based upon our review,we conclude that the existing structure is adequate to support the proposed solar panel installation.
Design Parameters
Code:California Building Code,2019 Edition(2018 IBC) 1
CITY Off'1�RCADIA
Risk Category:II ,,�•T_ �y, �,
,;zls)prncl�t .)ll�id��y ����)�Irit77ct7t
Design wind speed:95 mph (3-sec gust)p4iASCE 7��s
Wind exposure category:C 'r Aprii ��' 0
Ground snow load: 0 psf `ji5 st't d)f plllt'ir 191141 S))�'Cl{�l'i1i1(111,y 11111:,t 1)t'lcl pt
Seismic design category:D 011 u- ys)1719t,lff 1i1911`i illll.I 1111�:iileli)a i X11'19ht rt9i'1
Existing Roof Structure _ 5ltsllj I)�111�1(i( t",s.i }11' ��)4'��ui�t3i9ti ;l)►r'Islt>n°
�� '' ",�ilC;�ti1t1�1pii1t;111'lill?�pl.111 tltll)yj)t't'i�iL'11i111191`+i 10)111 017
Roof structure:2x8 rafters @ 24 O.C.
Roofing material:concrete tile(flat) fit'171 ltl t0 j)et li1i 01'iii 1)t'1it1 tlj),'10�`l�sti ll r
Roof slope:20° 0�'aflY pI t)1151Uti5 Oj t1171'Cli)'(11'tji11i111L'!'d)1'S111i'.X1115
Connection to Roof
Mounting connection:(2)5/16" lag screws w/min.2.5"embedment into framing at max.72" O.C.along rails
(2)rails per row of panels,panel height not to exceed 5'-6"
Conclusions
Based upon our review,we conclude that the existing structure is adequate to support the proposed solar panel installation.
In the area of the solar array,other live loads will not be present or will be greatly reduced(2019 CBC, Section 1607.13.5).
The gravity loads and; thus, the stresses of the structural elements, in the area of the solar array are either decreased or
increased by no more than 5%.Therefore,the requirements of Section 806.2 of the 2019 CEBC are met and the structure is
permitted to remain unaltered.
651 W.Galena Park Blvd.,Ste. 101/Draper, UT 84020/T(801)990-1775/F(801)990-1776/www.vectorse.com
L
VSE Project Number: U3002.0130.201
NifrECTOR Wang,Rick Residence
1/23/2020
dence
E i1 G I rl E E R S
The solar array will be flush-mounted (no more than 6" above the roof surface) and parallel to the roof surface. Thus, we
conclude that any additional wind loading on the structure related to the addition of the proposed solar array is negligible.
The attached calculations verify the capacity of the connections of the solar array to the existing roof against wind(uplift),
the governing load case. Regarding seismic loads, we conclude that any additional forces will be small. Conservatively
neglecting the weight of existing wall materials,the installation of the solar panels represents an increase in the total weight
(and resulting seismic load) of 4.8%. Because the increase in lateral forces is less than 10%, this addition meets the
requirements of the exception in Section 806.3 of the 2019 CEBC. Thus the existing lateral force resisting system is
permitted to remain unaltered.
Limitations
Installation of the solar panels must be performed in accordance with manufacturer recommendations. All work performed
must be in accordance with accepted industry-wide methods and applicable safety standards. The contractor must notify
Vector Structural Engineering,LLC should any damage,deterioration or discrepancies between the as-built condition of the
structure and the condition described in this letter be found. Connections to existing roof framing must be staggered, except
at array ends, so as not to overload any existing structural member. The use of solar panel support span tables provided by
others is allowed only where the building type,site conditions,site-specific design parameters,and solar panel configuration
match the description of the span tables.The design of the solar panel racking(mounts,rails, etc.),and electrical engineering
is the responsibility of others. Waterproofing around the roof penetrations is the responsibility of others. Vector Structural
Engineering assumes no responsibility for improper installation of the solar array.
VECTOR STRUCTURAL ENGINEERING,LLC
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„.♦F SS/0
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01/23/2020
Jacob Proctor,P.E.
CA License:70567-Expires:06/30/2021
Project Engineer
Enclosures
JSP/hof
651 W.Galena Park Blvd.,Ste. 101/Draper, UT 84020/T(801)990-1775/F(801)990-1776/www.vectorse.com
JOB NO.: U3002.0130.201
ECTSUBJECT: WIND PRESSURE
En G i n E E R S
PROJECT: Wang, Rick Residence
Components and Cladding Wind Calculations
Label: Solar Panel Array Note: Calculations per ASCE 7-16
SITE-SPECIFIC WIND PARAMETERS:
Basic Wind Speed [mph]: 95 Notes:
Exposure Category: C
Risk Category: II
ADDITIONAL INPUT&CALCULATIONS:
Height of Roof, h [ft]: 15 (Approximate)
Comp/Cladding Location: Gable Roofs 7°'<0 s 20°
_ Enclosure Classification: Enclosed,Buildings
Zone 1, 2e GCp: 2.0 Figure 30.3-2B (enter largest abs. value)
Zone 2n, 2r, 3e GCp: 3.0' (enter largest abs. value)
Zone 3r GCp: 3.6' (enter largest abs. value)
a: 9.5 Table 26.11-1
zg [ft]: 900 Table 26.11-1
Kh: 0.85 Table 26.10-1
Ke: 0.99 Table 26.9-1
KZt: 1 Equation 26.8-1
Kd: 0.85 Table 26.6-1
Velocity Pressure, qh [psf]: 16.4 Equation 26.10-1
PRESSURES: p = qh (GCp)(yE)(ya) Equation 29.4-5
Zone 1, 2e, p [psf]: 39.4 psf(1.0 W)
Zone 2n, 2r, 3e, p [psf]: 59.1 psf(1.0 W)
Zone 3r, p [psf]: 70.9 psf(1.0 W)
(a = 3 ft)
JOB NO.: U3002.0130.201
VECTOR SUBJECT: SEISMIC LOADS
E n G I n EER S
PROJECT: Wang, Rick Residence
COMPARE WIND&SEISMIC LOADS FOR CONNECTION (1 Sq. Ft. Section)
Wind Load, W:
Wind pressure, p: 15.0;.` psf(Zone 1: 1.0 W from wind pressure calculation)
Height, h: 1.0 ft
Width,w: 1.0 ft
Fperp: 15.0 lb (Uplift) Wind Controls Connection Design
Seismic Load, E:
Risk category: II ; Fa: 1.0
Seismic Design Category: D Fv: 1.5
Ip: 1.00 SMS: 2.171
Site Class: D SM1: 1.202
Rp: 1.5SDS: 1.447
Ss: 2.171 SDI: 0.801
Si: 0.801
ap: 1 0.7* Fp,min: 0.912 lb
z: 1.0 ft 0.7* Fp,max: 4.863 lb
h: 1.0 ft 0.7* Fp,vert: 0.608 lb
z/h: 1.0 0.7* Fp,long: 2.432 lb
0.7*Fp,perp: 1.403 , lb (uplift)
CHECK INCREASE IN OVERALL SEISMIC LOADS
SEISMIC: Estimated Roof Dead Load 20:8 psf
Solar Dead Load 3.0 psf
Total Dead Load 21.8 , psf
% Coverage 33%
Addt'l Seismic Weight 4.8%
Conservatively neglecting the weight of existing wall materials, the installation of the solar panels represents an
increase in the total weight(and resulting seismic load)of 4.8%. Because the increase is less than 10%, this
addition meets the requirements of the exception in Section 806.3 of the 2019 CEBC. Thus the existing structure
is permitted to remain unaltered.
: ,
. ,
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.,.. 1,,
JOB NO.: U3002.0130.201
VECTOR
E n G I n E E R S SUBJECT: CONNECTION
PROJECT: Wang, Rick Residence
Lag Screw Connection
Capacity: Demand:
Lag Screw Size [in]: ` ..5/16
Pressure Max Max. Trib.
Cd: 1.6 NDS Table 2.3.2 z Max. Uplift
Embedment' Force (lbs)
[in]: ° 2.5 (0.6 Wind) Tributary Area
(psf) Width (ft) (ft)
Grade: SPF (G = 0.42)a;` Zone
Capacity[lbs/in]: 205 NDS Table 12.2A 1, 2e 23.6 6.0 16.5 390
Number of Screws: 2 2n, 2r, 3e 35.5 6.0 I 16.5 585
Prying Coefficient: 1.4 3r 42.6 6.0' 16.5 702
Total Capacity [lbs]: 1171
Demand< Capacity: CONNECTION OKAY
1. Embedment is measured from the top of the framing member to the beginning of the tapered tip of the lag screw.
Embedment in sheathing or other material is not effective.The length of the tapered tip is not part of the embedment
length.
2.'Max.Trib Area'is the product of the'Max.Tributary Width'(along the rails)and 1/2 the panel width/height
(perpendicular to the rails).
JOB NO.: U3002.0130.201
EC 'T SUBJECT: GRAVITY LOADS
E n e i n E E R S
PROJECT: Wang, Rick Residence
CALCULATE ESTIMATED GRAVITY LOADS
Increase due to Original
ROOF DEAD LOAD (D) pitch loading
Roof Pitch/12 4.4
Concrete Tile (Flat) 12.8 1.06 12.0 psf
1/2" Plywood 1.1 1.06 1.0 psf
Framing 3.0 psf
Insulation 0.0 psf
1/2" Gypsum CIg. 0.0 psf
M, E & Misc 0.0 psf
DL 17 psf
PV Array DL 3 psf
ROOF LIVE LOAD (Lr)
Existing Design Roof Live Load [psf] 20 ASCE 7-16,Table 4-1
Roof Live Load With PV Array[psf] ; 0 : 2019 CBC, Section 1607.13.5
w/Solar Panel
SNOW LOAD (S): Existing Array
Roof Slope [x:12]: 4.4 4.4
Roof Slope [°]: 20 20
Snow Ground Load, pg [psf]: 0 0- - ASCE 7-16, Section 7.2
Terrain Category: C C ASCE 7-16,Table 7-2
Exposure of Roof: � Fully Exposed Fully Exposed ASCE 7-16,Table 7-2
Exposure Factor, Ce: 0.9 0.9 ASCE 7-16,Table 7-2
Thermal Factor, Cf: 1.1 1.1 ASCE 7-16,Table 7-3
Risk Category: II II ASCE 7-16,Table 1-1
Importance Factor, Is: 1.0 1.0 ASCE 7-16,Table 7-4
Flat Roof Snow Load, pf[psf]: 0 0 ASCE 7-16, Equation 7-1
Minimum Roof Snow Load, pm [psf]: 0 0 ASCE 7-16, Section 7.3.4
Unobstructed Slippery Surface'? No No ASCE 7-16, Section 7.4
Slope Factor Figure: Figure 7-2b Figure 7-2b ASCE 7-16, Section 7.4
Roof Slope Factor, Cs: 1.00 1.00 ASCE 7-16, Figure 7-2
Sloped Roof Snow Load, Ps [psf]: 0 0 ASCE 7-16, Equation 7-2
Design Snow Load, S [psf]: 0 0
•' e
. • ,
VECTOR
)11' JOB NO.. U3002.0130.201
SUBJECT: LOAD COMPARISON
i= n s i n e E R s
PROJECT: Wang, Rick Residence
Summary of Loads
Existing With PV Array
D [psf] 17 20 '
Lr[psf] 20 0
S[psf] 0 0
Maximum Gravity Loads:
Existing With PV Array
(D+Lr)/Cd [psf] 29 22 ASCE 7-16,Section 2.4.1
(D+S)/Cd [psf] 19 22 ASCE 7-16,Section 2.4.1
(Cd=Load Duration Factor=0.9 for D,1.15 for S,and 1.25 for Lr)
Maximum Gravity Load [psf]: 29 22
Ratio Proposed Loading to Current Loading: 75% OK
The gravity loads and;thus,the stresses of the structural elements,in the area of the
solar array are either decreased or increased by no more than 5%.Therefore,the
requirements of Section 806.2 of the 2019 CEBC are met and the structure is permitted
to remain unaltered.