SB: Re: Vault in the desert -- was pinning

[Mikal Jakubal <mjakubal@asis.com>]

>Excellent.  That's relatively simple.  How far apart should the bolts be
>placed?  24" x 24"?

Kirk,
Depends on the design of the roof. I have them closer on some parts,
further on others. The shed roof on the south side is attached to a ledger
that is bolted through every three feet along its length. On the north
side, where the middle of the roof curves to follow the vault surface, I
attached 1x6 sleepers to the mesh on the face of the vault every three
feet. Then I added another 1x6 over that (easy to curve two 1xs separately;
almost impossible to curve a 2x that much). These sleepers are then bolted
through every couple feet along their length. The purlins attach to the
sleepers with lag screws. 

But that's what I came up with based on conversations with Dan Smith and
Bob Theis, the architects on the project. Do you plan on having an engineer
on board for the project? I'd recommend it strongly, unless you are one
yourself, of course. Even after having built this, I wouldn't do another
one without engineering support, especially one this big. It has moved,
settled and behaved in some interesting ways that no one really predicted
requiring a bunch of retrofitting to deal with it. 

Mikal 

-------------------------------------------------------------------------
To unsubscribe from the list, send a message to:
   <strawbale-unsubscribe@crest.org>

or for the digest to:
   <strawbale-digest-unsubscribe@crest.org>

Please send any list administration questions to
strawbale-owner@crest.org