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HomeMy WebLinkAboutPV2022-113 - CalcsApril 29, 2022 RE: Project/Job # 92623561 Project Address: AHJ SC Office Design Criteria: CERTIFICATION LETTER Ramezan-Arab Residence 2839 Alta Vista Or Newport Beach, CA 92660 Newport Beach Irvine 1150- Z022 ��2022 V,sion #94.9.2 Applicable Codes = 2019 CEBC/CBC/CRC, ASCE 7-16, and 2018 NDS Risk Category = II Wind Speed = 110 mph (3-s Gust - Vult), Exposure Category C, Partially/Fully Enclosed Method Ground/Roof Snow Load = 0 psf MP1: Roof DL = 10 psf, Roof LL = 20 psf MP2: Roof DL = 10 psf, Roof LL = 19.5 psf MP4: Roof DL = 10 psf, Roof LL = 20 psf Per Section 1613.1, W-(PV)/ W-(exist roof) = 4.2%, Increase Seismic Shear Load < 10%, -> [OK] To Whom It May Concern, tI� C73045 *\ EXP. 12/31/2022 CIVIL ��P OF CALWO Structural Only Digitally signed by Marcus Hecht -Nielsen Date: 2022.04.29 0616:47 -0700' A jobsite 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 manufacturers 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 BUILDING DIVISION May 02 2022 BY: S.E.C. Tesla, Inc. T = 5 L n Version #94.9 - 2 `L ndscape t" _, ry .,>„;.`„ �r„n�Z;rr?`fi ; Ha�dwa�e" Lanrlscaly Modules!;Standoff;5p0ieiflc�ktolls" X-X Spacing •X-X Cantilever -:. Y-Y Spacing YY Cantilever, Configuration' Uplift DCR MP7 72" 24" 41" NA Not -Staggered 52.5% MP2 72" 24" 41" NA Not -Staggered 52.5% MP4 72" 24" 41" NA Not -Staggered 52.5% �jjPortralt :r - x n., r: LHgrdwareU , t .. ?�3tP": $ ,a;R`' `,", ' X-X Spaping '' „HardM,t(are, 'X-X Cantilever g PoFEWCModi7les�,$f�ndoff?SP,ec(figatl9,Lts, , Y-Y Spacing Y-X Cantilever �, Configuration I' -Uplift DCR. MPt 48" 21" 74" NA Not -Staggered 63.2% MP2 48" 21" 74" NA Not -Staggered 63.2% MP4 48" 21" 74" NA Not -Staggered 63.2% AAountrn� Plage 4 . ,ti�A"d4�iPikgLj't�,.4 ,`i(Degrees) Memb"er Evaluation Results" MP1 19` Member Impact Check OK MP2 - 20' Member Impact Check OK MP4 19° Member Impact Check OK Testa, Inc. T = 5 L n at 1s Period I S, 1 0.457 1 USGS e Seismic ChD)?ck Required (Ss?: OAg Yes IBC 7613.7 & SDC c: % Increase of DCR of Lateral Force - 4.2% WIP�f Wlai0a0l I Resisting System Increase SeismicShear Load < 10%, ->[OK] Note: Seismic base shear is directly proportional to roof weight. I�p¢f&PIlc Elm, Vol Ili itc r.. %Ar Roof Dead Load DL 10.0 psf x 1.06 10.6 psf 10.6 Psf PV Deadd-Load . PV-DL " ,9.0 pd x 1.06 9.5 sf Roof Live Load RLL 20.0 psf x 1.00 20.0 psf Snow Load ;SL1,2, _ Total Load(Governing LC -' TL 30.6psf 20.1 psf Notes: 1. ps = Cs'pf; Cs -roof, Cs -pv per ASCE 7 [Figure 7.4-11; 2. pf = 0.7 (Ce) (Ct) (Is) pg ; Ce=0.9, Ct=1.1, Is=1.0; RoofingMaterial, - Comp Roof Roof Slope 19, Framing Type / Direction' Y-Y Rafters f PV System Type SolarCity SleekMountTM Zep System Type _ JZS Comp , Standoff Attachment Hardware ZS Comp V4 with Flashing Insert Spanning Vents . , , No Ext. Pressure Coefficient (Up) GCp (Up) -1.29 Mg. 30.3-DVBICIB GHSNB Ext Pressure Co'efficlent (Down);'." GCp`(Down) '; ..S 0 57 qp 36 §ab�CmiHcrtisae Design Wind Pressure - p = qh (yE) (ya) (GCp); yE = 1.15, yA = 0.60 Equation 29.4-7 Wind. Pressure Up (Design I Ult) -;pt,,,t .13.3 1 •22.2.psf Wind Pressure Down (Design I Ult) Pidownl 9.6 116. `sf Notes: 1. Wind Zone Perimeter Width (a) = 7.3 ft.; Effective Wind Area (A) = 21.3 sf 2. yE = Array Edge Factor and yA = Solar Panel Pressure Equalization Factor per SEAoC PV2-2017 l\LLQWABLE STA�DOF SP�GING pacing 8 Portraitt �, _ 21" � t: W-PV 3 psf / 74 Ibs T-actual -288 lbs T-allow 456 Ibs nr-R R-I �Qu ,STRUCTURE ANALYSIS LOADING SUMMARY AND,MEMBER CHECK MP2 Roof Dead Load DL 10.0 Psf x 1.06 10.6 psf 10.6 psf PV Dead. Load :.-M L. . 9.0 psf ^: x 1.06 9.6 Of Roof Live Load RILL 20.0 psf x 0.98 19.5 psf Snow.Load Total Load (Goverri LC1 TL _ 30.1 DO 20.2 osf - 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. HARDWARE DESIGN CALCULATIONS - MP2 Ext. Pressure Coefficient (Up) GCp (Up) -1.29 Fig. 30.3-2XBICIDUGIH3 EM, Pressure Coeffcient (Down) '= .GCp(Down)°� 0 57 Flg;aga wBlcioislcrt.wa Design Wind Pressure p p = qh (yE) (ya) (GCp); yE = 1.15, yA = 0.60 Equation 29.4-7 Wind Pressure Up (Design I Ult) -.--p(U-I t -13.3 i-22.2psf Wind Pressure Down (Design I Ult aewB - 9.6 116 psf (votes: 1. Wind zone Perimeter Width (a) = 1.3 tt.; Effective Wind Area (A) = 21.3 st 2. yE = Array Edge Factor and yA = Solar Panel Pressure Equalization Factor per SEAoC PV2-2017 'ALCOj(VABLE STANDOFF SPACT11iGS„ ___ _ { Max Allowable Cantilever Standoff Con -figuration Portrait Portrait 21" Not-Siaggeyed NA' Max Standoff Tributary Area (Interior)'. Trib i 25 sf , PV Assembly Dead Load W-PV 3 psf % 74 Ibs Net Wind "Uplift at Standoff (Interior) T-actual -288 Ibs Uplift Capacity of Standoff _. . T-allow 456 lbs , , Standoff.Demand/Cdriarity (Intadorl DCR +. 632% Roof Dead Load ems,: DL m 10.0 psf x 1.06 „. I 10.6 psf 10.6 psf PY Dead Load. '-,Pv-DL ,.9.0 psf ,7 9:5 psf ' f Roof Live Load RILL 20.0 psf x 1.00 20.0 psf Sn6WLoad Total Load (Oo'vernina LC) , TL 30 6�Dsf 20.1 osf 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 HARDWARE DESIGN CALCULATIONS - MP4=' "! Insert Ext. Pressure Coefficient (Up) GCp (Up) -1.29 ris.3a.a.welciaFrcrwsae Ext.PressureCgeffigient(Down) ,- - 'GCp:(Down)' ` ','- 057 _ n9`?aawarcmi�cM3aa Design Wind Pressure p - p = qh (yE) (ya) (GCp) yE1.15, yA = 0.60 Equation 29.4-7 Wind Pressure Up (Design I Ult) pr„pl -1331 -22.2 psf Wind Pressure Down (Design I Uft i uwn ':9.6 116 p sf Notes: 1. Wind Zone Perimeter Width (a) = 7.3 ft.; Effective Wind Area (A) = 21.3 sf 2. yE = Array Edge Factor and yA = Solar Panel Pressure Equalization Factor per SEAoC PV2-2017 ALL OVYABL,$TANDOFF.SPACIIGS , Max Allowable Standoff Spacing Portrait 48" 74" Max Allowable Cantilever Portrait _- 21 NA Standoff Confi uration Portrait Not-Sta eyed Max Standoff Tributary Area (interior)«. Trib _ _ ' 25 sf _ PV Assembly Dead Load As W-PV 3 psf / 74 Ibs Net Wind: Uplift at Stendoff(Interior) T-actual `-288lbs Uplift Capacity of Standoff T-allow 456 Ibs _. Standoff. Demand/Capacity Interior DCR -:63.2%