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self-levelling cement

Thanks. All wood now 47 x 150. Frame and rafters del ~ £840, minus rafters £640 inc.

Wall built. Coursing blocks along front level with raised sides below blocks. Framing: 47 x 150 x X (was 38 x 140 x X), 600 c/c.

Thanks. Blocks to be 140mm wide. Front elevated (blocks on top of) dense coursing blocks: 215 x 140 x 65.

DPM outside of the slab. No room to manoeuvre in terms of building up around the slab: re-routed land drainage pipe around back, and electrical provision pipe along left. Blocks to be rendered. DPC under framing.

Opt1: One course 7N dense blocks, angle cut to level, DPC. Opt2: Feather-levelled concrete wedge, dense blocks, DPC.

Slab: 6" type 1, 2" sand, DPM, 2" kingspan, DPM layed over kinspan, 3 x A142 Mesh overlapped and tied, on chairs, 3.7m3 of C20 concrete (5" at front to 8" at back, flat - not thickened edges/footings).

Sketchup diagram of base in following post.

Setup: 20ft x 12ft mesh-enforced, insulated and DP'd, concrete slab to build workshop atop. Slab has 2% fall / 70mm slope along 12ft sides. Dense block perimeter (140 x 440 x 215). Flat roof. Land excavated lower than all 3 neighbours.

Very nearly. Req something with 45mm inside width (those are 19mm). But that would be just the ticket. No problem with lining up as the strings are in line with the openings between the slats.

Hochbett and ladder. How to secure the ladder against the 'hochbett' whilst also being able to move it out the way (or hang under the bed). Opt1: rabbetted top rail that rests flush against the hochbett rail, hooked over resting on the 4x2 between the slats. Opt2: still a top rail - but bolted...