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Best fastener for 4x1 wood against coke-breeze wall
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 (55W 60D 60H cm). A plumber drilled an 18mm hole, 6cm up from the floor, centrally through the face of the 4x1 right-front stud for a 15mm pipe to a toilet micro- basin. In so doing he found the wood a bit powdery - an inch above it is very hard. The powdery wood extends around one of the 0.5"-wide nails. This right-front stud appears to function as a vertical 4x1 wall plate in that it is 0.5"-wide nailed into coke-breeze & sits a fraction off the floor. Other studs go down into double-joists under the floor, rear has UB. Slight water stain suggests a past cylinder seam leak just inches away, with the HW tank sitting on linoleum directing the leak accordingly. All other wood, joists, check out as sound. Q - Is it worth adding some extra fixings thro the 4x1 into the coke breeze? Q - Do coke-breeze voids, brittle nature, require a screw with epoxy injected? Crude structural engineering indicates 5:1 safety factor and the stud does seem to act as a wall plate and probably has more 0.5"-wide nails further up. Ta. |
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