okay...i've heard the terms "on center" kicked around a lot lately.
what does that mean?
i mean terms like "18" on center" or 24" on center.
does that mean to measure from the center of the board to the center of
the next board?
This immediately brings to mind when I built my first shed and did the
typical blocking up of 3 2x4 studs in the corners. Never having built such
a structure (and not using plans) I was "green" to how the building goes
together. I knew the studs would be 16" OC along the wall, but did not
realize you measure 16" OC from the *first* stud, not the last one. So I
ended up with some crazy cutting of the top plates, exterior siding and
interior paneling. Was a tremendous hassle, but I made it work. Just one
of those things when you look back on it and go "D'oh, how could I have done
that?!" Live & learn.
That's exactly what it means. Commonly used in framing, when 16" on
center translates into a 14.5" empty space between studs. It's done
that way (in framing) so that the joints between sheets of drywall or
sheathing meet in the center of a stud, to allow for 3/4" of nailing
space for each sheet on the edges.
16" on center for walls, 24" on center for most floors and roof
As far as what it may mean on any given ww'ing project, the thinking
may vary a bit (most likely to identify where fasteners should be
placed to avoid missing with a nail gun or screws), but the concept
remains the same.
Hope this helps- the only stupid question is the one you're afraid to
thanks everyone...i was asking because i need to put a header up
against the back of my house so i can build the cover for the patio.
i've got the support beams in front figured out...it was where to drill
the holes for the header for my joist hangers that was tripping me up.
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