[CAUT] Getting the plate out

[Keith Roberts]

>From my experience in the commercial construction trades which was hanging
steel plumbing pipes from this stuff, you can hang from the top cord only.
Use a clamp that is threaded for allthread rod. Don't drill the cords. Drop
the allthread below the bottom cord and attach the cross/roller beam. No
problem

The hambro system is rated to hold the weight of the materials plus some
people standing on it, AT LEAST!. A roof structure will hold less weight
than a floor structure. The roof is not designed to carry any extra unless
there is a rainwater load possibility. The more joists you spread the load
across will ensure safety.
Try this:
First hook a clamp to the top cord of one joist and hang your lift. Put some
straps around a 1902 upright and start to lift. Measure the deflection with
a story pole and tape measure. If you feel safe lifting it all the way, when
you distribute the load, you have a safety factor.
Trial and error. Wear your hard hat or the insurance won't cover you after
you've been squashed.

Keith Roberts

On 4/26/07, Phil Bondi <phil at philbondi.com> wrote:
>
> Hi all.
>
> Before I spend any money on this, I want to get your
> thoughts on this subject..
>
>
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