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SUNPOWER CORPORATION Document #524734 Rev G SPAN TABLES, INVISIMOUNT Template FILE-074910, Ed. 2 Document #524734 Rev G, Vol. 2 3 SunPower Proprietary Module Pressure Calculation (ASCE 7-16): • The following equations reflect ASCE-prescribed calculations, with values specific to InvisiMount included where possible. • Note that some conservative assumptions have been made and, in some cases, the resulting values may be more conservative than a site-specific iteration of the ASCE-based calculations. • The below equations are applicable only to modules with an area equal to or greater than 19.5 ft^2. • See below glossary for definitions of all referenced variables. • ASCE 7 §2.3 defines load combination equations for LRFD, which generate design load pressures. The controlling equations which define the design load on the module are: o 𝑷𝒖𝒑=𝟎.𝟗𝑫+𝟏.𝟎𝑾𝒖𝒑 o 𝑷𝒅𝒐𝒘𝒏=𝑴𝒂𝒙{𝟏.𝟐𝑫+𝟏.𝟔𝑺+𝟎.𝟓𝑾𝒅𝒐𝒘𝒏 𝟏.𝟐𝑫+𝟏.𝟎𝑾𝒅𝒐𝒘𝒏+𝟎.𝟓𝑺 • The process for solving for these equations is as follows: o Identify site-specific inputs: ▪ 𝒛 =[ ] 𝑓𝑡 ▪ 𝑬 =[ 𝐵 / 𝐶 / 𝐷 ] ▪ 𝑽 =[ ] 𝑚𝑝ℎ ▪ 𝒑𝒈=[ ] 𝑝𝑠𝑓 ▪ 𝜽 =[ ] 𝑑𝑒𝑔𝑟𝑒𝑒𝑠 ▪ 𝒁𝒐𝒏𝒆=[ 1 / 2 / 3 ] o Select the following coefficients from the below Look-up Tables: ▪ 𝒛𝒈 =[ ] 𝑓𝑡 ▪ 𝑪𝒆 =[ ] ▪ 𝜶 =[ ] ▪ 𝑮𝑪𝒑,−=[ ] ▪ 𝑮𝑪𝒑,+=[ ] o Use the following equations to establish wind and snow loads: ▪ The minimum allowable value for 𝑊𝑢𝑝 & 𝑊𝑑𝑜𝑤𝑛 is 16 psf. ▪ Wind, Uplift: 𝑾𝒖𝒑 =𝟎.𝟎𝟎𝟑𝟏𝟔𝟓(𝒛 𝒛𝒈 ) 𝟐 𝜶∗𝑽𝟐∗𝑮𝑪𝒑,− ▪ Wind, Downforce: 𝑾𝒅𝒐𝒘𝒏=𝟎.𝟎𝟎𝟐𝟑𝟔𝟐∗(𝒛 𝒛𝒈 ) 𝟐 𝜶∗𝑽𝟐∗𝑮𝑪𝒑,+ ▪ Snow: 𝑺 =𝒑𝒔,𝒈𝒓∗𝐜𝐨𝐬(𝜽) If 𝜃≥15°, 𝑝𝑠,𝑔𝑟=0.84 ∗𝐶𝑒∗𝑝𝑔 If 𝜃<15° 𝐴𝑁𝐷 𝑝𝑔<20 𝑝𝑠𝑓, 𝑝𝑠,𝑔𝑟=𝑝𝑔 If 𝜃<15° 𝐴𝑁𝐷 𝑝𝑔>20 𝑝𝑠𝑓, 𝑝𝑠,𝑔𝑟=𝑀𝑎𝑥{20 𝑝𝑠𝑓 0.84 ∗𝐶𝑒∗𝑝𝑔 o Add the resulting load pressures in the load combination equations (dead load is provided): ▪ 𝑷𝒖𝒑=𝟐.𝟓 𝒑𝒔𝒇+𝟏.𝟎𝑾𝒖𝒑 ▪ 𝑷𝒅𝒐𝒘𝒏=𝑴𝒂𝒙{𝟑.𝟓 𝒑𝒔𝒇+𝟏.𝟔𝑺+𝟎.𝟓𝑾𝒅𝒐𝒘𝒏 𝟑.𝟓 𝒑𝒔𝒇+𝟏.𝟎𝑾𝒅𝒐𝒘𝒏+𝟎.𝟓𝑺 2621 S Glenarbor St - 201821343/6/2024