Bad angle for tension rods 1

[Matthew02]

Hi everyone! This is my first post here. I'm building a home with an awning (22'-9" x 11'-2") over the front porch. It's intended to be supported with tension rods, but I'm not sure how much these are helping on a 20° angle. I'm in Central Texas, so there is no snow load. The awning is attached to the wall at one end and very near the wall on the other end, so I suspect uplift isn't terrible (but I could be way off). From my figuring, I can use a 4-ply 12" LVL across the front of the awning and not need the tension rods, but the architect and customer prefer the awning to be 8" deep or less. I believe I could alternately use a W8x18 and get closer to that request, but I prefer wood. I would also like something lighter than those options which actually uses the tension rods for more than just aesthetics, and in either case, I'm not sure what to do with the front-right end that makes an unsupported corner. So I have two questions...

1. Can someone point me in the right direction to determine how useful those tension rods are? I thought about possibly using a second tension rod on a 45° angle directly below the one drawn on the plans.

2. For the awning outside corner on the front-right, if I attach an 11'-2" beam to the wall leaving 2'-0" cantilevered to the face beam, will that be adequate to support it?

I don't expect anyone to do the engineering for me, but if you have any helpful resources and can point me in the right direction, I would be very appreciative. I'm happy to provide more information or clarification if required. If this would be better asked somewhere else, or if I'm out of my lane here, let me know. You seem like a friendly group and I don't want to step on any toes. Thanks!!

https://files.engineering.com/getfi...eaf-b9b8-cbc607c8f369&file=Awning_Section.pdf

https://files.engineering.com/getfi...5-4d41-a994-8b304c9472a5&file=Awning_Plan.pdf

 

[XR250]

If you are a Structural Engineer, sounds like you need to consult with a local Structural Engineer.
If you aren't a Structural Engineer, sounds like you need to consult with a local Structural Engineer.

 

[Matthew02]

Thanks for the response. I have sent it to a structural engineer and I'm waiting for his designs. In the mean time, I would like to understand the problem myself. Saul, my engineer, gets bent out of shape when I ask him to walk me through his designs. "Just follow the plan I gave you." is not a great attitude. If my customer asks me to explain something, I'm always happy to take a little time to do that.

 

[hokie66]

XR250 is correct, and perhaps you need to find an engineer who is more friendly.

But the main two issues I see right off are 1)Uplift would likely control, and 2)Anchorage back at the house is problematic, need to ensure the structure there is strong enough.

 

[Matthew02]

Yeah, a good friendly engineer would sure be nice. I haven't had such luck yet. I guess that's the part of the trouble of living in a small city. Thanks for the two tips! I'll see what I can figure out from there.