[Strawbale]green roof on a straw bale loading walls
rene.dalmeijer at hetnet...
Mon May 30 15:51:31 CEST 2005
I recently built a small Load bearing SB building with a green roof.
This building has been built according to Dutch building regulations
which are quite strict. There are no specific SB codes here so I had to
give extra information to support the building permit. All in all
though I had no trouble and the building functions very well partly due
to the green roof.
Depending on the size of the building a green roof might be too much
for a purely LB SB wall although it does mean the house is quite big. A
rough approach is to find out how much roof is area supported per ft/m
SB wall. Based on the most conservative code for loading of a SB wall,
the maximum allowable combined load is 10kN/m (giving a 2.81 safety
factor) This means if you have a total roof span of 10m the maximum
allowable weight of of the roof structure and loads is 2kN/m^2
(10/(10/2) This is because the wall only has to bear the half span.
The green roof system applied in the small building accounted for a
dead load of 0.8 kN/m^2
On May 27, 2005, at 07:36, strawbale-request at amper....muni.cz wrote:
> Hi all!
> i guess that there are some "nebraska" houses with green=20
> i'm planning one....i have to pass all law certification process...i=20
> found and look at some test of loads that straw bale can
> it's seems that is not a good idea to have a green roof....
> anybody had already experience with it?
> thank you to all....a great list..
> all the best, valentina
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