[Build] Box of 4" long square-drive screws

[John Magolske]

* jim <jim at well.com> [090815 20:37]:
>   four inches seems too long to me. two-by-fours are 3.5 inches by
> 1.625 inches. the floor is likely one inch or less. four inch screws
> through the sole plates into the floor will likely be exposed under
> the floor to whatever's below, possibly no ceiling on the undersides
> of the floor joists and a possible hazard to persons working on the
> second floor ceiling (e.g. lights, other things fastened there).
>   we'll likely use 1/2 inch sheetrock, and a four inch screw will
> be hard work overkill to fasten the rock to the wall studs (1 1/4 or
> 1 1/2 inch lengths are usually used).

I agree they'd be wrong for putting up sheet-rock, standard drywall
screws would be much more appropriate. A use-case I was thinking of
was attaching the sole plates of the walls to the floor joists below:

    screw - (2x4 + Flooring) = 4 - (1.625 + 1) = 1.375"

So around 1-3/8" of bite into the floor joist...too much? But are we
going to even bother with finding floor joists to attach to? Is it ok
to just attach walls to the hardwood flooring? Is there a layer of
sub-flooring between the exposed hardwood flooring & the floor joists?

Maybe they'd be useful for 'toe-nailing' across corners, or...well,
I'll just bring in a lunch bag of the screws & if they end up being
useful for anything I can bring in more.

dpc -- yes, they are flat-head (82 deg. I believe), and pretty heavy
duty. Don't recall the size offhand, I think #10's or #12's


- John (who's wrapping up a buildout in his kitchen and will
        be joining in the fun at the 2169M buildout soon...)


-- 
John Magolske
http://B79.net/contact