I had quite a bit of advice on how to frame for the upper windows and lower. In the end, I did it my own way. Obstacles I had to overcome were complicated by Rammed Earth Walls a 1/2 inch or so out of line due to shifting of forms while compacting. I had to get a few windows a inch or 1/2 an inch shorter/wider than planned. But overall, I was happy with the end result. Took weeks figuring out how many windows to put in. I decided on 28 windows. 10 in the Rammed Earth and 18 in the Framing.
Weather plays a big part in what and when you can build. Sometimes though, it’s just beautiful.
After putting in the plumbing and electrical pipes, it was time for some greenery.
I waited to do my excavation for Plumbing and Electrical, mostly because I wasn’t sure how to do it. I watched my neighbors and other builders put it in and then rented a Kubota for a week. A neighbor helped with the excavation putting about 13 hours on the machine. I put in 27. Did a lot of work in the last two days before they came to take it away.
Roof was insulated with 8 inches of 40 PSI insulation. R40 at 0 degrees Celsius. Insulation was then covered with EPDM rubber.
Installing the vapor barrier for the roof was problematic. My first attempt using plastic failed. Condensation appeared overnight and after a week, a slimy scum arose. I couldn’t believe this building technique is usually recommended for Green Roofs. I switched to a more expensive paintable rubberized blue product – Blue like the Sky.
Across the Glulam beams 3″ x 6″ Double Tongue and Groove Planks were used. Weakest part of roof is 200 PSF across the longest beam. Otherwise the roof is 400 to 600 PSF.
Eleven Glulam beams were used to construct the first part of the roof. The longest beams were 42 feet in length and weighed 1000 lbs.
Twenty-two pillars were constructed to support beams for roof. Pillars were made out of 5/8″ rebar and 6000 psi concrete mix. Each pillar poured by hand and topped with a beam seat. Lots of fun climbing up ladder with half a pail of concrete.
The bond beam was made with 6000 PSI concrete mix and 5/8″ rebar. It was poured in four main sections strengthening the bond between walls.