I'm looking at a bookcase design that has a platform constructed out
of 2x4's, which is shimmed, and then the bookcase rests on top. The
trim hides the plinth.
I'm not convinced of the utility of shimming the hidden plinth as
opposed to just shimming the bookcase itself, then attaching the trim.
If the platform is smaller than the perimeter of the bookcase, then
the entire weight is supported by the bottom shelf, which isn't good.
It really must be exactly the same dimensions as the bottom of the
bookshelf and thus seems to add extra work without benefit.
Am I missing a potential benefit?
I like to do this when I'm building multiple unit built-ins and window
seats. I can create a level base to install the boxes on, ala
cabinet-style. My bases are strips of cabinet grade ply instead of
2x's, as I find the plywood more stable. I've never had to buy extra
plywood to build the base, I always seem to have suitable leftovers,
especially since the face veneer species doesn't really matter.
My ends line up with the outside uprights, the bottom shelf doesn't
support the whole unit.
<<My ends line up with the outside uprights, the bottom shelf doesn't
support the whole unit. >>
So if you were building multiple units, you would have a plinth whose
structure mirrored the sides of the various units. In other words, if
you had 3 book case units, you would have one plinth that supported
all three, and you would have some cross members to lie under each of
the cases sides?
I'd kinda be worried that any width deviation of the book cases would
end up with the last case hanging off the edge. :-(
The load of a bookcase rests on the 2(?) sides. I like to tie the
two sides together with an apron under the bottom shelf. An easy
way to stabilize this plinth is to create a four sided box. I
like to cut the bottom of the sides at a slight angle so that the
bookcase has to lean back against the wall, this causes the plinth
box to have a different front and back . I still like to pin the
top of the bookcase to the wall by some method, but a slight lean
helps to compensate for carpet tack strip and load dynamics.
Keep the whole world singing . . . .
DanG (remove the sevens)
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.