You usually have 100mm either side so your halfbrick wall wants 300 wide. Give it some depth as well, if you're in good ground go down about 800mm. Up to you whether you do a strip & build up or trench fill. How long is the wall, much more than 1500 & you'll be needing a buttress or a return wall
You usually have 100mm either side so your halfbrick wall wants 300 wide. Give it some depth as well, if you're in good ground go down about 800mm. Up to you whether you do a strip & build up or trench fill. How long is the wall, much more than 1500 & you'll be needing a buttress or a return wall
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