posted 3 months ago
Barbed wire does two things, it prevents side to side slippage - mainly in case of significant earthquake shake force, and it adds some tension strength that resists outward pressures lower down in a domed wall. Depending on your design and location, both may be unnecessary. if you just want a bit of 'grip' between layers as you go, you could scatter just a bit of sharp gravel under each new course.