|
|
Post by dryland on Oct 17, 2018 8:07:25 GMT -8
What have you guys done to go over a gap that a brick is too short to span? I have a 15" x18" gap on my bell that I am trying to figure how to span.
|
|
|
|
Post by peterberg on Oct 17, 2018 10:36:21 GMT -8
Hi Dryland, welcome to the boards.
There are several possibilities: one of those is castable refractory slabs.
Another one is the method used in the video below. That are steel T-bars, wrapped with Morgan Thermal Ceramics Superwool.
|
|
|
|
Post by Orange on Oct 20, 2018 23:43:51 GMT -8
I bought long hollow brick for lintels and and stuffed them with sand+clay for strength. They are holding the weight so far.
|
|
|
|
Post by pinhead on Oct 25, 2018 11:46:27 GMT -8
What is the temp you'll be seeing in that spot? Is it above the riser? If not above the riser, you can span it with clay-sand-ash-straw (cob) as long as it has sufficient support while it dries. In my next one I'll be using material such as this to prevent cracking and to strengthen the cob in general:  |
|
|
|
Post by josephcrawley on Oct 25, 2018 17:57:56 GMT -8
You can use a corbel arch or stack up chairs, supports from the floor up in tall columns to hold up the roof. Or a few courses from the top turn some bricks to the inside and use these to reduce the opening. My preferred method is a combo of chairs and turned in bricks.
|
|
|
|
Post by dryland on Oct 28, 2018 5:48:54 GMT -8
Thanks that gives me some ideas.
I don't exactly have a riser. At the moment I don't have any pictures to show my build.
|
|
