Loading...
Uploaded by rainwaterclub on Apr 14, 2011
The filtered rooftop rainwater has to be let into the underground sump. For this a hole has to be drilled into the sump . This can be quite a tricky task. A little bit like 2 kids trying to join hands through a tunnel under a sand castle :)
Nonprofits & Activism
Standard YouTube License
Load more suggestions
Link to this comment:
All Comments (0)