[Public-List] mast beam support

[Randy Katz]

Greetings, All,

For those interested, another view of the mast beam support task (with
    many photos) may be found at
http://alberg30.org/maintenance/HullDeck/MastBeam/SimpleGifts/

This job was, admittedly, completed with less finess than the one
using the lazer-cut aluminum beam that came from a template, but seems
to be working fine. My view (as a non-engineer) was that the lift
forces required could come on either side of the beam as provided by
the hefty knees supporting it. That was what I focused on instead of
bolting a beam to bulkhead materials or an aging laminated beam that,
themselves, may be sagging. Obviously, the whole idea is to transfer
that lift, or support, to the middle of the beam where it is
ultimately required.

On another A-30 website section about reinforcing the beam, mention
was made of renting house jacks to boost up the roof under the beam. I
used the auto jack from our Honda and found it to work well. After
slacking off shrouds and the backstay in order to relieve that
pressure, it's a matter of lifting mast, rigging, and pressing up the
cabin roof-- a relatively light weight proposition. A doubled 2x4 post
lifted the beam in the middle.

Hope this helps,

Regards,
Randy Katz
#249
Seattle,Bellingham, WA.


> Message: 2
> Date: Wed, 30 Apr 2008 12:21:24 -0400
> From: "J Bergquist" <jbergqui at gmail.com>
> Subject: Re: [Public-List] rub rail
> To: "Alberg 30 Public List -- open to all"
> 	<public-list at lists.alberg30.org>
> Message-ID:
> 	<bef708940804300921i609238ceuf97279ace9fb0d2f at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> Dave-
> 
> I would love to hear details and see pix if you have them.
> 
> Thanks!
> 
> JB
> 


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