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Kiko Denzer on Art

[Cob] reciprocal frame roof

Robert Alcock ralcock at
Tue May 27 14:35:05 CDT 2008

Hi there

As a builder of a double (6 beams on 12 beams!) reciprocal frame roof 
for our cob cabin, I can tell you they're fiddly but well worth the effort.

you can download an Excel spreadsheet there that will let you calculate 
the dimensions for your reciprocal frame roof.
be persistent if you have trouble with the site, it's been playing up 

happy roofing


coblist-request at wrote:
> Date: Sun, 25 May 2008 21:04:51 -0600From: thinksaloud at gmail.comTo: yunk88 at hotmail.comSubject: Re: [Cob] dome calculator...woohooo!
> I love your links, Cat.  Have you run across any for how to build a reciprocal roof?  I assume you know what those are--they make a conical roof, with the struts mutually reinforcing each other.  I've got a project for a chicken coop, but I don't want a dome, I want a conical roof.