I priced a Tulikivi for my house and gave them all of its specs .. it came to $15,000 and close to six ton of soapstone. That I decided was too costly and I found this site.
I am trying to get 4 to 5.5 tons of mass for my Rocket Mass Fire Place with an eight foot bench and heated wall. From charts for dirt on the net .. it looks like 100 lbs/cf for the weight of adobe is close.
Bench 22" seat x 18" Ht x 8' long .. std chair height. Bench would catch pass #2 at the base.. 2,196 lbs.
Wall immediately behind bench seat .. catching pass #1 at base and pass #3 in the middle .. wall will be 20" wide and 3' tall and 8' long.. 4,800 lbs. I didn't know how thin I could safely make an adobe cob wall.
Less 30' of 6" vent .. x .2 = 600 lbs lost weight. 4,800 + 2,196 - 600 = 6,396
To correct to 5,500 lbs
8/6400 as X/5500 = 6.9 ft. for length of wall. I am trying to create 150 degree temp at the top of the chimney to keep a good draft .. my vertical rise is about 20 feet. Some of this is just guess work after comparing the soapstone models.
If you get too far from the stone age .. things go haywire.
You are HERE! The other map is obviously wrong. Better confirm with this tiny ad:
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