Hi
We're currently thinking about an extension, and I'm starting with the drawings to see what we can do with the space we've got.
Certain plans I've seen online state beams for cavity walls to be drilled and bolted 'at 1/3 span centres'.
What does this mean? Are the beams simply bolted together with say M12 bolts at 1/3 span? If so what does this serve? I would not think this enough to allow simultaneous deflection of both beams, if that's what it's for.
We're currently thinking about an extension, and I'm starting with the drawings to see what we can do with the space we've got.
Certain plans I've seen online state beams for cavity walls to be drilled and bolted 'at 1/3 span centres'.
What does this mean? Are the beams simply bolted together with say M12 bolts at 1/3 span? If so what does this serve? I would not think this enough to allow simultaneous deflection of both beams, if that's what it's for.