I have the following questions
(most “dumb” but as always I hope some others will benefit by my willingness
to appear a fool so they don’t have to):
In the opinion of the group, what
is the priority among depth, no. of plies, spacing and grade when you are
specifying sawn lumber floor joists?
Priority for depth is deflection. I myself want to
make sure there is no bounce. / Single joists work fine unless you need
to double up for tall long partitions or point loads. We require double joists
if the partition above it is longer than half the joist span. / #2 at 16"
is the standard. Go to #1 if the span requires it.
How do you allow for different
depths, if they vary? Is it better to notch ends, build up ends or just stick
to all the same depth of joist because the relative cost is minor compared to
the labor involved in notching, providing seats, etc?
Varying the depths is a big
hassle for the contractor. Unless it coincides with a floor elevation
change I wouldn't take the trouble of incorporating varying depths
unless more than 50% of the floor could use the smaller
What weight to you use for
supported partition walls? Can you support them without blocking at the
location of the wall?
use 8.0 psf for interior partitions with gyp ea. side. There is no need
to block under non-bearing partitions in residential construction. Where
we do block is under the kitchen island edge and the front edge of kitchen
counters where the floors will be tile and the counter tops will be granite,
other thing: Does anyone have any plans—I don’t care if they are CAD, PDF,
anything—that they wouldn’t mind letting me have/look at? None of the “go-by”
plans I have from the builder are worth a cr*p, because engineers here don’t
typically—NOTE I DO SAY “TYPICALLY”—do a very good job of producing structural
framing plans for residential. I want to see what some of you guys are doing
because I have respect for your diligence.
I might be able to have one of my guys prepare
something next week. Please email me
wouldn’t mind sharing I promise not to “plagiarize,” and I’d also like to send
my own drawings to you for “peer review” in return.
I could care less if you