We have an airing cupboard consisting of CW tank over HW cylinder.
The cupboard is built into the corner formed by a double-brick rear wall & single coke-breeze side wall. The cupboard framing consists of 3 studs of 4x1, left-rear, left-front & right-front which travel from floor to ceiling.
The Zinc CW tank sits on 4x1 noggins run left-front to left-rear studs, and right-front-stud into rear-wall (no 4th vertical stud). CW Tank weight is somewhere south of 200kg by cupboard size (