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10179304_1408 W. 2ND - Plan
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10179304_1408 W. 2ND - Plan
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Last modified
5/2/2021 11:54:11 PM
Creation date
10/25/2020 5:15:39 PM
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Plan
Permit Number
10179304
Full Address
1408 W Second St
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- PROJECT: Buitron Solar Panels Doug Engineering SHT.2 OF 2 <br />CLIENT:TPS Civil Engineering DATE 7/23/2013 <br />BY:DM DE JOB NO. TPS-1194 <br />CHECK SCREW ATTACHMENTS FOR WIND UPLIFT <br />P wuplift =342.2 Ib 5/16" Lag with min 2.5" penetration for each attachment <br />Table 11.2A - NDS - Lag Screw Withdrawal Values <br />For 5/16" Lag into .5G wood 266 Ib <br />Allowable wind load = 1.6*2.5*266 1064 Ib >342 Ib OK <br />Unirac Selection <br />Load for half a panel = 2.5' <br />WUNIRAC =53 pif <br />Per the Unirac Manual for 40 pif, the max span <br />for Solar Mount Unirac Rails is 6.5' <br />Use L-Foot SolarMount Rails with a spacing of 72" o.c. max for attachment points, typ. <br />Table 8. L-Foot SolarMount Series Rail Span <br />SM - SolarMount HD. SolarMount Heavy Duty <br />Span <br />2 <br />3 <br />33 <br />4 <br />45 <br />7 <br />73 <br />83 <br />9 <br />93 <br />10 <br />10-5 <br />11 <br />11.5 <br />I2 <br />12.5 <br />13 <br />115 1 <br />14 <br />143 <br />I5 <br />w = Dtulbuted Load (08 <br />20 25 30 40 50 1 60 1 80 100 120 140 160 leo 200 220 240 260 280 300 <br />SM SM SM SM 91 SM SM SM 9M SM SM SM SM SM SM SM <br />SM SM SM SM 91 SM SM SM SM SM SM SM SM SM SM SM <br />SM SM SM SM 91 SM SM SM SM SM SM SM SM SM SM SM <br />SM SM SM SM SM SM SM SM SM SM SM SM SM SM | <br />SM SM SM SM 91 SM SM SM 91 SM Stl HD <br />SM SM SM SM 91 SM SM SM 91 SM HD <br />SM SM SM SM 91 SM SM SM HD HD <br />SM SM SM SM SM SM HD HD HD <br />SM SM SM SM 91 L_1 Ho HD HD <br />SM SM SM SM 91 SM HD HI) HO <br />SM SM SM SM SM HD HD HD <br />SM SM SM SM SM HD HD HD <br />SM SM SM SM HD HD HD <br />SM SM SM HD HD HD HD <br />SM SM SM HD HO HO HD <br />SM SM SM HD HO HD <br />SM SM HD HO HD HD <br />SM SM HD HD HD HD <br />SM HD HD HD HD <br />SM HD HD HD HD <br />HD HD HD HD <br />HD HD HD HD <br />HD MD HD HD <br />HD HD HD <br />HD HO HD <br />HD HD HD <br />HD HD HD <br />SM <br />I r <br />LATERAL ANALYSIS <br />DETERMINE ADDITIONAL LOAD COMPARED TO EXISTING FOR LATERAL LOADING <br />Aroofexisting- = 2000 sf Wpanel = <br />Wroofexisting = 9.7*2000 =19400 Ib 14 *V\/panel = <br />Wwallexisting = 15*70*4 =4200 Ib Wrestofarray = <br />44.1 Ib <br />617.4 Ib <br />116.34 Ib <br />Wexisting =23600 Ib Warray =733.74 Ib <br />V = 0.182W <br />Vroofexisting -4295 Ib Existing Total Lateral Force <br />Vroofwpanels =4429 Ib New Total Later Force <br />% increase =4429 <br />4295 <br />*100%-100% =3.1% <br />increase which results in less than a 10% increase in the stress of <br />existing lateral resisting elements OK
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