Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,818
Anybody know of a convenient (free) calculator to determine uplift force?
I'm going through SolarAPP+, which looks up simple things like ampacity and EGC size. It knows windspeed (100 mph) for my location, but just has me declare spacing between standoffs attached to roof.
diysolarforum.com
Unirac provides tables for spans, given lbs./ft. load on their various size rails, up/down/sideways.
In my case I'm using Solarmount Light rail.
Best I've found so far is this site, which for an example tilted array with 115 mph wind arrived at p = 43.191 psf
www.mecaenterprises.com
This tries to explain the calculations, but is still foreign to me.
I do see that lower standoff lets me get closer to ridge and eaves.
Can you point me at something easier?
I'm going through SolarAPP+, which looks up simple things like ampacity and EGC size. It knows windspeed (100 mph) for my location, but just has me declare spacing between standoffs attached to roof.
SolarApp+
SolarApp+ From https://solarapp.nrel.gov/: Safe and affordable home solar through permitting automation In 2021, the National Renewable Energy Laboratory launched a collaborative effort with key code officials, authorities having jurisdiction, and the solar industry to develop standardized plan...
diysolarforum.com
Unirac provides tables for spans, given lbs./ft. load on their various size rails, up/down/sideways.
In my case I'm using Solarmount Light rail.
Best I've found so far is this site, which for an example tilted array with 115 mph wind arrived at p = 43.191 psf
How to Find Wind Pressure on Solar Panels
Calculate design wind pressure on rooftop solar panels with an example including a 30ft tall building with a flat roof in Broken Arrow, OK. Learn how to use the ASCE 7-16 design code to optimize your solar panel setup.
www.mecaenterprises.com
This tries to explain the calculations, but is still foreign to me.
I do see that lower standoff lets me get closer to ridge and eaves.
Can you point me at something easier?