31 Jan '12, 2am

Green Roof Study Finds Big Variation in #Stormwater Retention - EBN: 17:10 #greenroof

Posted by David Lanfear on Oct 26, 2009, 09:08 AM I am appreciative of this testing and am very interested in the ongoing findings. As I research and develop living roof systems its helpful to have results to measure what I think works to actual results. To my mind most systems are vastly overdesigned for their stated functions, water retention and heat reduction, and it seems, are still not accomplishing their goals. I am testing recycled, or crushed, concrete as part of my mix. It seems to have many of the qualities that sedum like and is a readily available, recycled/reused material. I have not done water quality testing yet, but initial inquiries real that the greatest concern is residual lime, which gives the soil high alkalinity. As for weight, it does not seem to be any higher than gravel. Because of the rough, porous nature of its surface, the concrete seems to abs...

Full article: http://www.buildinggreen.com/auth/article.cfm/2008/9/25/G...

Tweets

Depictions of natural world declining in childr...

e360.yale.edu 31 Jan '12, 4pm

31 Jan 2012: Depictions of Natural World Declining in Children’s Books, Study Says A new study finds a significant decline...

Apple & Foxconn: Breaking Up Is Hard to Do: For...

ebnonline.com 31 Jan '12, 9pm

For the sake of argument, let's say Apple Inc. (Nasdaq: AAPL), after suffering criticism for the actions of one of its bus...

Historic tin roof #green

Historic tin roof #green

greenbuildingadvisor.com 04 Feb '12, 9pm

Hi, I recently bought an 1840s farmhouse with an original, as I am told, standing seam tin roof. It's a one and half store...