Re: post and beam sb house

[David J Heritage <dheritage@juno.com>]

John Dittli wrote:

<<Our load bearing walls required 6x12s with a max span of 4 feet (our
house is
engineered for a live roof load [snow]of 100 lbs/sq ft). >>

I'd like to know more about your roof design. Is the 100lbs/sq ft just to
accommodate snow loads? I'd like to have a living roof but it seem to
require such massive beams and very short clear spans. Are the 4 foot max
spans just along the wall? What kind of clear spans do you have on the
interior of the house? What kind of insulation did you use for the
ceiling/roof? What R- value do you have in the ceiling?

Its interesting that your engineer equated a built up 6x8 to a solid 6x6.
An old structural design book I have says "A built-up beam thus
constructed has a strength equal to the sum of the strengths of the
individual pieces."

Best Regards,

Dave Heritage
St. Louis, MO
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