I want to build a standing shelf that will stand on my desk around my PC monitors and want to be able to stand my PC case on top of it.
I'm planning on using 28mm solid pine boards.
The shelf dimensions will be 1400mm wide, 400mm deep. The "legs" will be 650mm high, 350mm deep and be placed 72mm from the outside edge to create a 1300mm distance between them.
The brace on the back will be 200mm high and 22mm from the back edge.
Below is the design I made using CAD software from various angles.
Using this design is the brace on the back of sufficient size to prevent lateral movement or should it be taller?
And if not how tall should it be?
Should it be offset further "inwards" or will it provide sufficient support at the current position.
Will the overall design be strong enough to support 50kg? (About 110 pounds.)
And if not, how/what support could I add that it will support such a load? Or if it's not possible to answer is there a calculator or something I can use to calculate the possible loads and/or deflection?
Perspective view: Front view: Top view: Back view: Side view: