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Home My WebLink AboutSITE SURVEY PERFORMED 1/5 BARuN CORP December 22,2021 RE: CERTIFICATION LETTER Project Address: CEDRIC ALLWOOD RESIDENCE 48 SILVER OAK DRIVE PORT ST. LUCIE, FL 34952 Design Criteria: Applicable Codes=2020 FLBC/FLEBC 7th Edition,2020 FLRC 7th Edition,2018 IEBC/IBC/IRC,ASCE 7-16 and 2018 NDS Risk Category= II Wind Speed= 158 mph, Exposure Category C, Partially/Fully Enclosed Method Ground Snow Load=0 psf Roof 1-3:2 x 4 @ 24"OC, Roof DL= 12 psf, Roof LL/SL=20 psf(Non-PV), Roof LL/SL=0 psf(PV) To Whom It May Concern, A job site survey of the existing framing system of the address indicated above was performed .All structural evaluation is based on the site inspection observations and the design criteria listed above. Existing roof structural framing has been reviewed for additional loading due to installation of PV Solar System on the roof.The structural review applies to the sections of roof that is directly supporting the solar PV system. Based on this evaluation, I certify that the alteration to the existing structure by installation of the PV system,with blocking upgrades in Roof 3(Hip), meets the prescriptive compliance requirements of the applicable existing building and/or new building provisions adopted/referenced above. Additionally,the PV module assembly including attachment hardware has been reviewed to be in accordance with the manufacturer's specifications and to meet and/or exceed the requirements set forth by the referenced codes. FL 10 YUR!q��'% N, c E N SF .�O * N�o.�8^626 *y�_�}Q Digitally signed by • � ��I SL Yurianto Yurianto Sincerely, DN:cn=Yurianto Yurianto c=US o=Unaffliated v A01410D00000176B Yuri Yurianto,S.E., P.E. '� r u �t� o 07CBF250000A7A2 �O�• STATE E O F Reason:I am the author •,•/C P, ,••' of this document Location ` ` Date: 1 15 08 0012-22 By Yuri at 11:14:53 AM, 1212212021 This item has been electronically signed and sealed by Yurianto Yurianto,SE,PE.on the date and/or time stamp shown using a digital signature. Printed copies of this document are not considered signed and sealed and the signature must be verified by a 3rd Party Certificate Authority on any electronic copy. Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com www.barun-corp.com 2/5 BARUN CORP lumlor 94 CEDRIC ALLWOOD RESIDENCE,48 SILVER OAK DRIVE, PORT ST. LUCIE, FL 34952 MOUNTING •N (BASED ON IMPACT ROOF ROOF PITCH (deg.) RESULT Roof 1-3 18' OK STANDOFF . •DWARE EVAULATION FOR WIND UPLIFT ROOF UPLIFT DCR Roof 1-3 76.3% Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com I www.barun-corp.com 3/5 LOAD CALCULATION BPR"MRMPE Roof 1-3 CEDRIC ALLWOOD RESIDENCE,48 SILVER OAK DRIVE,PORT ST.LUCIE,FL 34952 PV SYSTEM DEAD LOAD PV module weight 2.5 psf Hardware assembly weight 0.5 psf PV-DL 3.00 psf ROOF DEAD LOAD Existing Roofing Material Comp Roof 3 layers 7.5 psf Underlayment 0.5 psf Plywood Sheathing 1.5 psf Framing Weight 2 x 4 @ 24 in.O.C. 0.73 psf Vaulted ceiling No 0 psf Miscellaneous 1.5 psf Total Roof Dead Load R-DL 11.73 psf REDUCED • • • • EXPRESSION Roof Live Load Lo 20.0 psf Member Tributary Area At <200 sf Roof 1-3 Pitch 4/12 or 18' Trubutary Area Reduction Rl 1 Slope Roof Reduction Rz 1 Reduced Roof Live Load Lr=Lo(RI)(R2) 20.00 psf SNOW LOAD Ground Snow Load pg 0 Effective Roof Slope 18' Snow Importance Factor IS 1.0 Snow Exposure Factor Ce 1.0 Snow Thermal Factor Cf 1.1 Minimum Flat Roof Snow Load Pf-min 0 Flat Roof Snow Load Pf 0.00 iIIIMIIIIIIIIR SLOPED ROOF SNOW LOAD ON ROOF (All other surfaces) Roof Slope Factor Cs-roof 1.00 Ps-roof 0.00 SLOPED ROOF SNOW LOAD ON PV PANEL (Unobstructed slippery surface Roof Slope Factor Cs_P 0.87 Ps-Pv 0.00 Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com I www.barun-corp.com 4/5 ■ IMPACT ARON B MRPCE ■ Roof 1-3 CEDRIC ALLWOOD RESIDENCE,48 SILVER OAK DRIVE,PORT ST.LUCIE,FL 34952 Roof Dead Load(DL)= 11.73 14.73 psf Roof Live Load(Lr)= 20.00 0.00 psf Roof Snow Load(SL)= 0.00 0.00 psf I EXISTING WITH PV PANEL (DL+Lr)/Cd= 25.38 16.37 psf (DL+SL)/Cd= 10.20 12.81 psf Maximum Gravity Load= 25.38 16.37 psf Load Increase(%)_ -35.53% OK IEBC Provision: 2018 The requirements of section 806.2 of 2018 IEBC are met and the structure is permitted to remain unaltered. Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com I www.barun-corp.com 5/5 M WIND CALCULATION BARON CORP Roof 1-3 CEDRIC ALLWOOD RESIDENCE,48 SILVER OAK DRIVE,PORT ST.LUCIE,FL 34952 SITE INFORMATION Ultimate Wind Speed(mph)= 158 Roof Pitch(deg.)= 18° Risk Category: II Roof Type: Hip Exposure Category: C Kd= 0.85 Mean Roof Height(ft)= 15 Kzt= 1 Solar Array Dead Load(psf)= 3.00 Kz= 0.85 qh=0.00256*Kz*Kzt*Kd*Ke*VZ= 46.11 a(ft)= 3.00 Array Edge Factor(yE)= 1.50 Solar Array Pressure Eq.Factor(ya)= 0.60 Hardware Type: SFM INFINITY MICRORAIL WITH UNIRAC SFM INFINITY RAIL-LESS Allowable Load(lb)= 982.50 Ibs,S.Pine 2.5"Embedment Max.X-Spacing(ft)(Zone 1) 4.00 Effective Wind Area(ft2) Max.Y-Spacing(ft)(Zone 1) 3.30 13.20 Max.X-Spacing(ft)(Zone 2r) 4.00 Effective Wind Area(ft) Max.Y-Spacing(ft)(Zone 2r) 3.30 13.20 Max.X-Spacing(ft)(Zone 2e&3) 4.00 Effective Wind Area(ft) Max.Y-Spacing(ft)(Zone 2e&3) 3.30 13.20 ROOFZONE GCp(-)UPLIFT UPLIFT PRESSURE(psf) PULLOUTFORCE 1 -1.30 -30.66 404.70 2r -1.75 -41.86 552.61 2e&3 -2.35 -56.81 749.83 *Wind calculation is based on ASCE 7-16,29.4-C&C,LC#7:0.61)+0.6W used. -0 10 100 -0 10 100 •3.8 = 1 13.8 3 •3 ICI d •32 32 -3.0 40 � .2.8 a .2.s 6 ® 3 C] .2.6 2.6 CJ •2.6- _Z____T_ [7 2.4 2.4 �? -24 4-4 i .29 -9-0 .W -2.0 .i4 - 3 -i 4 + ' 1 L2 -1 1.2 1-31 0 p IQ QI (D I� a a 4 ' 4642 W .2 e' 40A � +03 +p.9" w ouel e 3 Q 3 o.a +08 - +07 a I PLAN fl0 fi ID 20 50 200 5oot0c0 t too r t0 20 50 too 200 50a1000 W (09)0 (461 M" ww) (00 W 0 (46)N CK (4657(9P91 Effective Wind Area,R 2(m2) Hffective Wind Area,ft 2(In 2) FIGURE 30.3-2E Components and Cladding [h<60 ft(h<18.3 m)]: External Pressure Coefficients, (GC,),for Enclosed and Partially Enclosed Buildings-Hip Roofs,7°<9<20°(Roof) Barun Corp I Design and Engineering 1610.202.4506 1 chrisk@barun-corp.com I www.barun-corp.com [Ey HIP TRUSS TOPCHORD (E)PLYWOOD SHEATHING t INSTALLATION NOTES: • CUT AND ADD (N)2x4 (or 2x6) BLOCKING AS SHOWN IN S1. FASTEN (N)2x BLOCKING TO (E) HIP TRUSS TOP fE1 JACK TRUSS (N)VERTICAL2x4or2x69LOCK CHORD USING SIMPSON A34 CLIP ON EACH SIDE. TOPCHORD . INSTALL BLOCKING AT ALL LOCATIONS THAT REQUIRE (N)SIMPSONA34CLIP A PV SYSTEM MOUNT/LAG. AT EACH END OF THE SLACK 51 BLOCKING UPGRADE NTS