- Under which layers should I put the mosaic tiles? as they are there to protect 'wicking' insulation materials from water, I'm assuming they should also be under the fire blankets and possibly also the vermiculite stucco?
- I did some calculations on the side thrust of the chimney, and were the side walls freestanding, they would definitely topple. However, they're partly embedded in the stucco, and will also be attached to the stone floor (which consists of loose stones basically). I'll probably put in a buttress, as depicted in the picture below, but would welcome any comments/remarks about people's experience with similar arches.
Ie. with some of the casted chimneys I would imagine that they also take up the side thrust, that might be a solution I could also consider. The buttress I'm currently planning is also only supporting the side walls on the 'back'. I'm assuming that the walls are sufficiently short/stiff that this will basically support the whole sidewall, but also here: any experience/knowledge is welcome!
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