The permaculture design principle Obtain A Yield often conjurs images of lush vegetable gardens or fruit trees, but there are many other yields to be found.
Yesterday I removed some roofing iron and old timbers from the roof of an abandoned dairy. The timbers were old Australian hardwood; very strong and increasingly hard to get. Because they are aged, they won’t twist or shrink. The timber comprised 4 x2 purlins (already removed prior to photograph below) and 5 x 1.5 rafters. I found a bit of borer in some of the purlins, but the rafters were all in great condition – and the larger ones measured out at 5.3 metres (sorry to mix the metric & Imperial systems, but I’m bilingual)
By the way, this is not Produce No Waste…. Produce No Waste relates to your place and your systems: when you go somewhere else and scavenge, salvage or forage something that someone else would otherwise discard, you are obtaining a yield. 😉
The roofing iron was 7.3 m long – too long to fit on my tandem trailer – so I cut it in half. 3.65 m is still a pretty useful size sheet.