Hi there - designing a 12m x 7.5m four car detached garage. It is to be Permitted Development and therefore needs to be brick external leaf. Speaking with a builder, he says if i build with 4" brick external and tied to abutting 4" block solid wall that will be strong enough (and an economical way) to build it. I was going to just show a 100mm brick 100mm clear cavity 100mm block wall. Is the solid wall a better option? Or would it be better in a single skin of brick with piers at 3m intervals (or less)? The side gables will be 7.5m long and 4m tall to top of gable...
Thanks
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