Spatial Studio
Lift core spatial envelope
EN 81-20 · ISO 8100 · AS 1735 · Andy · v2026.15

Spatial Studio — lift core sizing

Spatial Studio sizes the lift core before a lift is selected. Enter rated load, speed, machine type and door arrangement, and it returns the spatial envelope — car internal dimensions, shaft plan, pit depth, overhead and machine space — as a to-scale plan and section with a dimensioned schedule.

Dimensions are derived from a standards engine citing EN 81-20, ISO 8100, CIBSE Guide D and AS 1735. Car area is taken from rated load on the EN 81-20 Table 6 and ISO 8100-1 design basis, with occupancy at the conventional 75 kg per person. The shaft plan follows EN 81-20 and ISO 8100 running clearances; pit depth and overhead follow the pit, overrun and headroom provisions of EN 81-20 §5.2, and both grow with rated speed as buffer stroke and overtravel increase. Machine space follows AS 1735 and EN 81-20, including the minimum working height of AS 1735.2.

Alongside the standards result, the studio sets a catalogue of published Australian-market product data next to it, component by component, showing where a real product reserves more or less core than the standards envelope. That difference is reported per component rather than as a single accuracy score: product envelopes vary with machine, door and counterweight arrangement, and a standards figure is a design basis rather than a prediction of any particular product.

It is built for architects, developers and building designers who need a defensible core size at concept stage, and for vertical-transportation consultants validating a design. Default proportions — car width to depth, for instance — are planning heuristics and can be overridden, so a concept figure should be revisited once product and door arrangement are fixed. Confirm dimensions with the lift manufacturer before they are committed to drawings.