Free build★★★

-- fps

Height10 m

Thickness2.0 m

Batter (lean-in)3°

Ground

Footing wider by0.3 m

A thick wall keeps the push of the wind inside its middle third. Try thinner and watch the green band.

Lime : sand (by volume)1 : 3

Mortar age at the test90 days

Carbonated depth-

Mortar strength f_m-

Highest safe wall (SF 3)-

Strong enough for this wall in-

Lime hardens by taking CO₂ from the air, from the surface inwards. Depth grows like √time: 4× the time gives only 2× the depth.

Walkers in the wheel

270 kg each

Pulley strands (mechanical advantage)

Stone block300 kg

Time-lapse

Safe load (SWL)-

Rope pull at the drum-

Lift height-

Lift time (model)-

Walker power in-

Big wheel, small drum: the wheel is a lever. Each pulley strand shares the load but needs more rope.

Wind speed0 m/s

Overlay

Challenge

Section at the base

Thrust off-centre e / kern-

Overturning safety-

Base stress / mortar-

Ground pressure-

First joint opens at-

relaxedworkingtoo much

Castle Mason's Yard

Setting up the yard...

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The mason's yard needs WebGL. Try another browser or turn on hardware acceleration. A thick wall stays up while the push of the wind stays inside its middle third: that is the idea this lab teaches.