On Sat, 2 Oct 2004 23:16:58 +0100, "Steve"
wrote:


"Rick Dipper" wrote in message
.. .
On Sat, 2 Oct 2004 18:49:34 +0100, mark
wrote:

In message , Rick Dipper
writes

I need to get a 7m 254*102*25 RSJ ridge purlin into place, this is
gonna weigh in at at least 350kg, so me and the girlfriend wont be
able to lift it onto the roof.

If its 254mm deep by 102mm wide by 25kg per meter then should it not
weigh 175kg?


The "normal" way I guess is with a crane, but I can't get a crane to
the house, nor can I get a big enough teleporter or excavator in.

There is a window below the RSJ at both ends, the tops of the windows
are not build yet.

The current plan is to get the thing in through the window (we can
drag it with the bobcat), then using scaffolding and pullies lift it
up, building the scaffold underneeth to stop it dropping. When we get
to the top of the windows we can put the bricks in under it.
My worry with this plan is that the scaffold will have to hold if for
some days while all the brickwork sets, and a big storm may not be
good for the situation.

I would use a couple of steel tower scaffolds myself and a a trolley
jack.

Is this the way is normally done, or is there some trick that I have
not thought of yet ?


More or less.
We recently lifted a 7m length of 16" x 11" oak beam into place using
much the same method.
Me and a labourer got it into the building on rollers and up into place
in 8 hours.

Thanks for the encoragment, the next question is an oak truss, 4.5 m
wide. Take it slow and easy, and it will get there in the end.


An oak truss!!!! have you seen a doctor modern surgical techniques can work
wonders you know
Or is it for after you have lifted the beam into place?

The oak truss can go up in bits, and be assembled up there, as I
intend to make it myself, I should be familiar with how it fits
together. Its not going anywhere neer so high up, or in such an
awkward place to get to.


Seriously I saw Tommy Walsh put a large oak beam in on the TV and the
scafolders that built the frame they left the horizontal poles the beam was
resting on loose to act as rollers . Obviously there were other horizontals
below these to stop spreading

Reminds me of getting the 4.5 metres 9x2s in for our loft floor only way
short of taking the roof off or tearing down ceilings was to remove the air
brick/ vent from the back bedroom chimney breast, remove corresponding
bricks from the outside (luckily house was built with lime mortar so an easy
enough job ) and them lift them onto the outhouse roof and feed them through
the hole.bedroom, down the landing and thence into the loft

Steve