[Public-List] Deck beam still a little flat.

[Mike Lehman]

Make sure that all tension is removed from the rig. It is amazing how quickly things tighten up when you jack the beam up a bit. So the process is jack, loosen, jack some more, loosen some more and so on.

 
Mike Lehman 

 
><((((º>`·.¸¸.·´¯`·.¸><((((º>`·.¸¸.·´¯`·.¸><((((º>
 
 






 
> From: r.kingsland at ksba.com
> To: public-list at lists.alberg30.org
> Date: Mon, 21 Sep 2009 09:22:53 -0400
> Subject: Re: [Public-List] Deck beam still a little flat.
> 
> Greg,
> 
> Not sure what you mean in your 2nd paragraph but RE the first, I renovated
> an historic, post and beam building that needed to be jacked up and
> discovered old wood "petrifies" (gets hard and inflexible) and will not
> immediately bend to the intended new shape when placed under different
> loading conditions. Perhaps this is the case with your beam and you just
> need to place a point load in the middle and let the beam settle into the
> new (original) curve over time.
> 
> Roger 148 
> 
> 
> -----Original Message-----
> From: public-list-bounces at lists.alberg30.org
> [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of
> gregr at nethere.com
> Sent: Monday, September 21, 2009 1:52 AM
> To: public-list at lists.alberg30.org
> Subject: [Public-List] Deck beam still a little flat.
> 
> Finally dug into fixing my deck beam this weekend. The tabbing is gone and
> the beam is jacked up until it is just lifting off the inner supports. The
> shape has improved but is still noticeably flat in the center. I originally
> used a 18"x3"x3/4" piece of red oak between the lifting point and the beam.
> I wanted something to spread the load and yet take an arc. After giving it
> an hour or so I cut reliefs to narrow the oak to about 8". That didn't make
> a difference. So, is this normal? If not, then what's the trick? I am doing
> this with the stick up but since I can lift the beam off its supports I
> can't see where that is a problem.
> 
> What is the solution for replacing the tabbing without it causing a flatness
> issue with the plates? My current plan is to cut an 1/8" x 1" rabbit along
> the top edge and sides of each plate. This will allow most of the plate to
> sit flat against the beam. I'll fill the rabbit with thickened epoxy during
> assembly.
> 
> As always Thanks for the help!
> 
> Greg
> s/v Sea Dance
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