Plywood

How do you look up the shear strength of 3/4 plywood used vertically? In this example using 12 inch X 8 ft pieces of plywood laminated side by side in a staggered arrangement screwed and glued to build a beam? I realize different grades are going to be different strength. Just looking for something like a span table to get a general idea.

Thanks for the reply. I realize it would be a matter of engineering and
involve shear tests to get to the exact limit of capacity depending on how you use it. I can find multiple references to what a square foot will support horizontally, but I haven't seen anything when used vertically. I assume its also possible they may print it on the side of the board or have it available from the manufacturer too. Seems likely they must have some type of industry rating or standard but I haven't found it.    

What I have in my garage and basement is doubled up 2x12 laminated. Support every 12'.

When you say vertical is tis for compression strength or as a diagonal and used in loading like a floor weight ? chart of laminated lumber shear or compression
https://www.google.com/search?q=chart+of+laminated+lumber+shear+or+compression&rlz=1C1CHWA_enUS627US627&oq=chart+of+laminated+lumber+shear+or+compression++&aqs=chrome..69i57.25987j0j15&sourceid=chrome&ie=UTF-8

Thanks folks. I found what I was looking for. The rest of the story: Daughter and husband bought a ranch style home--1989 construction-- and want to remove a section of wall between kitchen and dining room. Both are mechanical engineers; so is his brother. Very calculating, careful people. Their first idea was a barn beam under the trusses and exposed. They disgarded that because it took up ceiling room plus couldn't get engineered strength rating of an old barn beam. Second plan was placement of a beam above within the trusses with steel hangers to the center of the trusses to provide support from above. He has since found that the company that makes the truss rated them high enough that they don't think they need to add a beam at all. They are waiting on a civil engineer to inspect and approve it.
When they were contemplating the beam-inside-the-truss I suggested possibly fabricating it in place by laminating pieces of 3/4 plywood, since it would be easier to put 8 ft X 12 or 16 inch sheets up there than sliding a 20 ft pre made beam in and removing the siding of garage end wall to do it.
Whatever they do is up to them; I'm staying out of it and watching the process.
My question is pure curiosity to see if what I was thinking was feasible, in the event that I ever buy a house and decide to do a similar remodel.

good reference and some charts..

On my lean to on back of shop I got several end wall trusses I used and applied metal roofing to purlins attached to the trusses . problem was when sag as end wall truss had simply vertical support not a V or slanted members in truss to spread load . 
 On then I scabbed 2x10 on to each truss lower cord after jacking them up to remove sag . So learned some on truss design - and that was before i got my building inspection degree .