[Greenbuilding] Glass roofing
colsen at fairpoint.net
Thu Aug 14 14:49:07 MDT 2014
True, the temples are shallower, but the diagonal of a golden rectangle (10 to 16.14....) is an ancient proportion used for
roofs in New England.
373 route 203
Spencertown, NY 12165
colsen at taconic.net
On Aug 14, 2014, at 3:28 PM, candtcampbell at juno.com wrote:
> I could have sworn that the pitch of a Greek pediment was something like 5.2 in 12. I think that's what someone like Asher Benjamin wrote.
> In any case, 6/12 is my favorite pitch because I'm in a climate with little snow, and if you frame a hip roof at 16" OC, the jack rafters fall at 24" OC on the hips.
> My favorite pitch is 7.5/12, aka 10 in 16. When I started reviving a 19th cent church, I
> measured the roof pitch to find this odd dimension,
> and assumed it had sagged from a sensible 8/12, but no, that's a Greek proportion: the
> diagonal of the Golden Mean. All the old barns
> and churches have that pitch, which I came to see as the shallowest that would shed snow
> and the steepest I could walk on. And it looks right. Ballon framing a gable end at
> 16"oc yields studs are in 10" increments.
> Clarke Olsen
> 373 route 203
> Spencertown, NY 12165
> colsen at taconic.net
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