[alberg30] Re: SWLs

[Guy Lalonde]

Pete,

I don't have any A30 specific info on tension for standing rigging. But in 
the book "The Sailor's Assistant" by John Vigor (International Marine), 
they provide the following general rule:

1- the upper shrouds, backstay and forestay should be tensioned at 
10% of the boat's displacement (A30 displ 9000 lbs, so 900 lbs)

2- tighten the forward lower shrouds so that the mast bows forward 
slightly but noticeably at the spreaders

3- tighten the aft lower shrouds to straighten the mast again

4- sail for a few hours in moderate winds to allow the rig to stretch

5- again in moderate winds, adjust for straightness (fine tuning)

Hope this helps. If anyone has A30 specific data, I'd be interested in 
knowing.

Cheers,
Guy Lalonde        Cyrena #466
guy.lalonde at sympatico.ca 

    -----Original Message-----
    From: Pete <petejill at sprynet.com>
    To: Alberg30 at onelist.com <Alberg30 at onelist.com>
    Date: Sunday, March 07, 1999 11:00 AM
    Subject: [alberg30] SWLs
    
    
    I have some questions about load factors on the Alberg.  First, I'm replacing the block on my topping lift and was wondering what would be a safe working load for the new block.  Secondly, I am considering putting foot blocks on the boat.  Is 3500 lbs... an adequate SWL?
     
    Finally, is there a consensus on tension for standing rigging?
     
    Thanks in advance.
     
    Pete H. 
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