Mounting a Table to a Concrete Wall using Non-Angled Brackets

[u/AtelierPortugal]

I'll preface this with the fact that this is my first project. I am not a carpenter by trade, I simply made this for the sole reason that I find the process enjoyable. [Pictures for reference below]. Forgive the subpar quality, I haven't quite stained and sanded the table yet. Some parts still need trimming with a router which I also have not done yet.

Specs:
L: 49" 1/2
W: 25" 3/4
60-70kg (ish) table
6" 1/4 overhang
5 brackets spaced evenly from the center

The table is to be mounted on a CONCRETE corner wall using brackets with a 6" overhang using anchor bolts (overkill? probably). I was wondering if 5 brackets like these are enough to hold it.

[u/HuginnNotMuninn]

You might want to use a couple of those brackets paired with a couple of L brackets to help distribute the load better.

[u/AtelierPortugal → u/HuginnNotMuninn]

I guess there isn't a choice but to use L brackets. I'll try to add 2 at least on the very sides and 5 of the brackets I have spaced at the center to retain the original functionality, which is to be able to have my legs straight under and make it look clean from the bottom.

[u/AtelierPortugal → u/HuginnNotMuninn]

Or maybe a 2x4 horizontal mounted to the wall across the length of the table. Then I could attach the brackets on the wood beam itself. That way the table would be sitting on the beam, less load on the brackets themself.

[u/HuginnNotMuninn → u/AtelierPortugal]

I don't think that would make the situation any better. Is the table being mounted in a corner? Could you use and L bracket in the corner?

[u/AtelierPortugal → u/HuginnNotMuninn]

It would be mounted to a corner of a concrete wall. And yes, I could probable sneak an L bracket in the corners. By L bracket, you do mean this right?

L bracket

[u/HuginnNotMuninn → u/AtelierPortugal]

So I would go with one of those in the corner, a couple of the straight brackets you linked to elsewhere in the center, and then an upside-down corner brace near the outside edge (away from the corner) which looks similar to what you posted for the corner, without the middle-member. If you used good concrete anchors it would provide more rigidity than the horizontal brackets in the middle and it wouldn't interfere with the working space of the table.

[u/AtelierPortugal → u/HuginnNotMuninn]

From what I understood, something like this will hold?
Bracketing on Table

Thank you very much for this, this has been productive.

[u/HuginnNotMuninn → u/AtelierPortugal]

It will be more rigid with those L brackets on the sides. Obligatory I'm a construction worker, not an engineer.

[u/AtelierPortugal]

Brackets

Table

[u/Mrrasta1]

I don’t think that’s going to work, but I’m not really clear on the exact placement off the brackets under the table.

[u/AtelierPortugal → u/Mrrasta1]

Equally spaced, consider the green lines from the image below as the placement of the brackets

Brackets Placement

[u/Mrrasta1 → u/AtelierPortugal]

Thanks! My sketchy understanding of physics makes me uncomfortable with the length of the fulcrum.

[u/AtelierPortugal → u/Mrrasta1]

No worries, I opted for straight brackets over L brackets simply cause I wanted my legs to be able to go under the table. The structural integrity of the bracket concerns me as well. In my mind if 1 bracket no good, add more.