[Strawbale] PVC - continuing OT thread

[Mike Weaver]

If one wanted use something other than PVC for a large plumbing project 
- I need 8" to 10" diameter pipes,
are there any recommendations?

It's drainage issue so it doesn't need to be safe for drinking water, 
and hopefully would be pretty cheap.

-Mike


Speireag Alden wrote:

>On 2008, Feb 16, at 10:54, Sherwood Botsford wrote:
>
>  
>
>>Steel tubing is hard to bend, and substantially more expensive than  
>>(factor of 3) than pvc.
>>ABS hadn't occurred to me.  Is it flexible enough to put an 1/8  
>>circular arc (45 degree) in 16 feet?
>>    
>>
>
>     I don't know, but I suspect that it could be used that way.   
>It's reasonably flexible, but all of my actual experience to date is  
>with 4-inch schedule 80, and so I can't answer your question directly.
>
>     I can say that the stuff I've used has sat out in the sun for a  
>few years with no sign of degradation.
>
>  
>
>>Pointer to using ABS pipe for structural purposes?
>>    
>>
>
>     Haven't got one.  Google on "ABS" and "structural support" or  
>"structural strength".
>
>  
>
>>Greenhouse environments are very humid.  Wood doesn't last long in  
>>a warm humid environment.
>>A greenhouse frame with wood elements needs to be replaced every  
>>few years, or it has to be pressure treated.
>>    
>>
>
>     Well, that's why I suggested saplings.  You have a wood lot.   
>You can probably cut, annually, far more wood than you actually  
>need.  Use durable attachment hardware, like the steel plates or  
>steel tubing which they used for geodesic domes.  If you have to swap  
>out a few saplings every year, well, cut them to short pieces, set  
>them by for two months and you have primo kindling for the next winter.
>
>  
>
>>I can put up a PVC framed greenhouse in a couple of days, at a cost  
>>for frame around 30 cents per square foot of ground covered.
>>A viable alternative:
>>   Needs to be no more than twice as expensive.
>>   Needs to be no more than twice as long to set up.
>>
>>OR
>>
>>Convince me that PVC is sufficiently evil, and I'll postpone the  
>>greenhouse until I can do something different.
>>    
>>
>
>
>     Well, here's one paper to consider.
>
>     https://www.usgbc.org/Docs/LEED_tsac/PVC/CMPBS%20Original% 
>20Submittal.pdf
>
>-Speireag.
>
>
>_______________________________________________
>Strawbale mailing list
>Strawbale at listserv.repp.org
>http://listserv.repp.org/mailman/listinfo/strawbale_listserv.repp.org
>  
>