[Strawbale]green roof on a straw bale loading walls

[adriaan van sandwijk]

on 30-05-2005 15:51, Rene Dalmeijer at rene.dalmeijer at hetnet... wrote:

> Valentina,
> 
> 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
>> roof....built....
>> 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
>> carry....and=20
>> 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
>> 
> Rene
> 
> 
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> 
Hi, everybody,
The item of a green roof on a SB house seems interesting to me, but has
nobody ever thought of thatched SB buildings. I know that their is a living
tradition in England of thatchers who work with straw not reeds.
Adriaan