L-Brackets - Upside down or right side up?

[Kelemvor]

Howdy,

I have a pull down projector screen that I am mounting to a wall (drop ceiling isn't strong enough to support anything). I will be using two L brackets that look like this:
https://www.amazon.com/dp/B000OD1502/ref=pe_2640190_232586610_TE_dp_i1

They will be mounted with the long end against the wall. The screen will then be suspended under the bracket at the end.

I'm wondering if it makes the setup stronger or weaker if the part of the brackets that are against the wall are going up or down. Standard way would be down . This would mean the weight of the screen is being passed down the angled section and into the wall. The top-most screw holding the bracket in would be supporting the most weight.

If the bracket was upside down, all the weight would be going straight down. The corner of the bracket would be a fulcrum point and the angled piece would then be pulling all the weight out from the wall. I don't know if this is enough to really matter.

My boss thought it might look better to have the bracket upside down but I don't want it to be a weaker install.

 

[lxskllr]

It may not matter, but for maximum strength install like your linked picture. The welded angles would be carrying the weight if upside down, and could separate. Probably not, but they don't look like they're super high quality in the pic.

 

[Fardringle]

How heavy is the screen and how hard do you have to pull to extend the screen out?

If you anchor the brackets properly into the wall studs, I wouldn't think it would make a significant difference unless it's a really heavy screen. And it definitely would look better with the bracket down since then it would be "invisible" behind the screen. It would also let you mount the screen a bit higher on the wall if you want to do that.

Also, depending on the quality of the build of the brackets, if you install them with the L up, the weight of the screen will be pulling against the welds on those angled supports and that could be a problem if the welds are weak. With the L down, the supports will still be holding the weight, but the projector will be pushing the supports into their welds instead of pulling them away from the welds and that might be a little bit stronger.

 

[gorobei]

you want the brackets mounted as illustrated in the pic.
in that setup the screws only have a vertical load and the triangle frame is in compression.
in the inverted setup the welds are under tension and the frame doesnt help.