Recent content by yardcalchub

Your Metpost plan makes sense given the buried slab, though check how deep the slab sits first — a driven post shoe will bottom out on shallow concrete, in which case you'd be better coring through it with an SDS drill and setting the posts in concrete. For quantities, work in 6ft (1.83m) bays...

I'd agree with cutting the haunching back, and here are the topsoil maths to go with it. Turf wants roughly 100mm of good topsoil, so measure the bed in metres and use volume = length × width × 0.10. As a worked example, a bed of 3m × 2m needs 3 × 2 × 0.10 = 0.60m³. Screened topsoil weighs...