I've a question about supporting sheet goods.
I'm building a recording studio in my basement. Excellent way to combine two hobbies with expensive equipment requirements, IMO. :)
For my recording desk, I need a 15" wide shelf 25" off the floor, 60" wide. That shelf needs to support 50lbs. That holds a weighted-action MIDI keyboard nearest me.
I also need a 48"-wide shelf that needs to support 150lbs (2 21-inch monitors. I'm CERTAIN SWMBO will let me buy them . . yeah . .right).
The height of the second shelf is uncertain beyond "a bit higher than the other one"--largely dictated by the height of my monitors.
My setup table can support me -- plenty of safety margin for the monitors :( . It's built with two layers of 3/4 Borg Birch Ply, one layer of 1/4" tempered hardboard, and has a 4" deep apron made of 3/4" birch ply.
That construction would most likely work, but I'd wager it's SERIOUS overkill--I built it to have a stable surface for glue-ups. Portability and weight were NOT concerns.
There are no clearence requirements in the back, but beneath the front shelf, I need knee room.
How much support do I need? I'm using the full-sheet 3/4 Borg Ply for the shelves. Would a 4" piece on edge be sufficient for this? Do I double layer the rear (monitor) shelf?
I know how to build it strong and heavy. What can I do to keep it reasonably light?