In article ac323131-1442-4f7e-9869-
,
says...
On Sep 21, 1:49*am, Ignoramus7553
wrote:
I have a wooden cart on casters on which I will have a generator. Its
weight is 1,400 lbs, and the weight of the entire stucture would be
1,600 lbs. This cart may one day be winched into a trailer on
ramps.

To the front of the cart, I want to attach a lifting eye. It is a big
lifting eye with the threaded stem removed, and welded to a 1/4"
plate, which would be attached to the cart by means of four 5/16" lag
screws.

My question is, what is the optimal length of these lag screws. The
wood is regular soft wood. I assume that beyond some length, the extra
grip given by extra length is meaningless.

Here's a lag screw load calculator:
http://www.awc.org/calculators/connections/ccstyle.asp?

Thanks indeed! That's a great tool to have around.

I'm planning something akin to what the OP is doing. I have an
unfinished room above my garage with access only to the second floor
of the house (it's where they generally put the "bonus room"). My
plan is to use if as my shop (convert it to the bonus room if I
move).

I'm trying to think of a way to get tools and materials up there, so
was considering a hoist (what's the difference between a "hoist" and
"winch"?) with an access door down to the garage. I'd have to lift
a table saw (~600lbs.), hence the interest in this load calculator.

--
Keith