[Cob] Living roof and (a somewhat steep) pitch - methods to help soil from sliding off?

[Brian Liloia]

I just finished constructing my reciprocal roof frame. (A reciprocal roof is
a self-supporting, spiraling, conical structure with poles that all bear the
weight of one another at the top of the frame.) I am concerned that my pitch
is a little steeper than is common for living roofs. I do not know the
angle, but you can get an idea of the pitch from this photo:
http://www.flickr.com/photos/smallape/2868726583/ - (I may borrow a scribe
to calculate the angle later.)

Does anyone have an recommendations for preventing soil from sliding off of
one's roof? I know of the method of nailing 2x4s across the roof to act as
steps, but I'm looking for something that might be even more effective and
efficient. I am not excited about nailing lots of 2x4s across my decking.

Thanks!

- Brian

(For more info. on my house and reciprocal roofs, here is my website
address: http://www.small-scale.net/yearofmud)





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_________________
I live at http://dancingrabbit.org
I write at http://small-scale.net/stash
and this is the Year of Mud http://small-scale.net/yearofmud