Remi: Visit http://www.canbar.com/wood/wood_pipes.html
http://www.sewerhistory.org/grfx/components/pipe-wood3.htm books http://www.sacanada.org/index.php?showtopic=7101 http://www.sakoman.net/pg/html/16440.htm down load http://www.austehc.unimelb.edu.au/tia/173.html download http://www.civilprojects.com/library/books/awdm/online/wwhelp/wwhimpl/java/html/wwhelp.htm download http://www.pubs.asce.org/ceonline/ceonline03/0303feat.html http://www.hydropower-dams.com/atlas/companyc.htm Regards Nando ----- Original Message ----- From: "Rémi Berthet" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, September 01, 2005 4:23 AM Subject: [microhydro] Wooden headwater pipe > Dear all, > > I work on a small scale hydropower project in northern Laos (2400kW). A > small dam is diverting water into a dessander, then into a 1,2km pipe > (diameter 2,4m), leading to a surge tank. > With the non-stop raising price of steel, we have studied several > technical solutions to convey the water from the intake to the surge > tank. But neither GRP pipes (very expensive) nor concrete (very long) > appeared to be the good solution. > For now few days, I have been thinking of the possibility to use the old > technique of the wooden pipeline. There are some very good woods around > here, fitting exactly to this use, and wood may have some advantages: > -low friction > -Easy and fast to build up (endless barrell method) > -Low cost > -Envirronmentaly friendly > > My only problem now is to find skilled people to do it, and in a first > time, experienced people to advise us on many points as any of our team as > ever built a wooden headwater pipe... > If you know this people, or if you can advise us, feel free to contact me! > > Here is the technical characteristics of the pipe: > -Diameter 2400mm (inner) > -Flow: 6,3 m3/sec > -length 1250m > -Slope: 0,2% > > Wood used: Thingan (hopea odorata) > > > Thank you in advance > > > [Non-text portions of this message have been removed] > > > > > > > Does your company feature in the microhydro business directory at > http://microhydropower.net/directory ? If not, please register free of > charge and be exposed to the microhydro community world wide! > > NOTE: The advertisements in this email are added by Yahoogroups who > provides us with free email group services. The microhydro-group does not > endorse products or support the advertisements in any way. > > More information on micro hydropower at http://microhydropower.net > > To unsubscribe: send empty message to > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/FGYolB/TM --------------------------------------------------------------------~-> Does your company feature in the microhydro business directory at http://microhydropower.net/directory ? If not, please register free of charge and be exposed to the microhydro community world wide! NOTE: The advertisements in this email are added by Yahoogroups who provides us with free email group services. The microhydro-group does not endorse products or support the advertisements in any way. More information on micro hydropower at http://microhydropower.net To unsubscribe: send empty message to [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/microhydro/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
