KillaWhat wrote:It's sort of a combination of Ground mount and roof mount components.
Any concern about the snow load/wind load on the cantilever? Was it difficult to get the engineering on the loads and capacities reasonable such that you were comfortable with it?
The support system is way over designed.
The rails that support the racking are rated at 680 lbs support (each) at mid-span.
The roof mounts are Zilla double stud mounts with 2-3/8” x 5” stainless lag bolts into a pair of sistered 2X8 douglass fir joists, 14 in total, with a PER BOLT pull out load of 1300 lbs.
Since the struts are supported at the mid point, the static dead load is balanced, and in theory, there is no up or down load on the lower mounts (static)
I evaluated that the weak point in the system (in theory) was actually the connection between the roof joists and the vertical wall assembly.
Modern construction is very reliant on “gravity” and an adhesive
So while I couldn’t come up with a real world scenario that could exert enough force on the system to do any damage to the mounting system without completely destroying the panels first, I installed hurricane straps between the Roof Joists, and top plate, and the top plate and the wall studs.
Typical engineer. It’s got a safety factor of about 500%.
Looks like a lot of shade. May need to trim or remove a tree.
Yes, I have some shade problems.
I have 2 trees coming down, and this picture was taken at 6:30 pm in late October.
I will have between 5.5 and 6 hours of decent sun in winter, and more in summer.
I live very much In The Woods!
This system will put out a max of 4kW/hr and at 6 hours that’s 24kW.
My non-charging daily load is about 19kW (LOTS of LED lighting)
So we will see how this goes.