It is important to distribute the weight & not support it all on 1 joist.
Put a 2x6 or 4x4 across several trusses and hang the car from that board.
This will distribute the weight across several trusses. Do this at both
ends of the car. You should be able to get the weight supported by each
truss to under a hundred pounds each.
Doug Armstrong
-----Original Message-----
From: shop-talk-bounces at autox.team.net
[mailto:shop-talk-bounces at autox.team.net] On Behalf Of Tim
Sent: Saturday, March 17, 2012 11:08 AM
To: shop-talk at autox.team.net
Subject: reinforcing roof joists
A qustion for engineers here maybe?
I want to hang a Datsun Roadster car body from the joists above my shop
and garage space so I can start working on a frame in the shop.
The joists are approx 2' apart and made of 2x4s. The roof is a 4 12
pitch. The car body might weigh as much as 700 pounds but I have yet to
get an accurate answer. (I thought I had read at one point that the body
weighed between 400 and 500 pounds.)
What do I need to do to reinforce the joists in order to be able to do
this? Or is this just too much weight? I've seen pictures of this having
been done but do not know whose they were or what they might have done
to be able to hang this kind of weight.
Thanks!!
tim
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