Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
(OP)
Below is what I am trying to build

H=7.5' W=8' L=10'
There is an option to reinforce the structure like in the picture below. The blue line cables should be optional

Can this be build of wood?

H=7.5' W=8' L=10'
There is an option to reinforce the structure like in the picture below. The blue line cables should be optional

Can this be build of wood?





RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
How will you resist the corners from lifting as one side gets hit by local up/down forces not on the other corner? This will twist the two horizontal beams significantly.
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
That above will get you a stable structure. There will still be issues with deflections and racking, but maybe you can live with that flexibility.
-Mac
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
I had a similar post asking about how to calculate the above structure when it is made of metal
racookpe who posted here reported that as duplicate and it was deleted. Good work buddy !
The shade is made of fabric and it is retractable
I will use cables for that and that should reinforce the structure. The cables will run along the long side of the shade
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
There is no way you could get rigid strong-tie connections to work for gravity loads in this situation. Between the cantilever and reduction in connection rigidity from fastener slip, etc. that is not a good idea.
-Mac
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
Cables run from left vertical (about midway) to the back of the right vertical, then across to the front of the left horizontal. That gives one half of two different tension braces. The second runs from right mis-point vertical, across to left top vertical, then back to right horizontal to complate the two tension crosses. Verticals still need to bw a bit higher than what is drawn in the sketch.
Verticals and horizontals will not easily swing back and forth. The canopy run from a high cross member down over the two crossing x's (to eliminate the debris/leaves/water ponding) down to the front.
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
-Mac
RE: Need help with calculating the size of a retractable shade cantilever pergola (woodl frame)
no awing there