Work out assembly point area instantly with clear inputs, formula shown and shareable results.
An assembly point must hold everyone comfortably enough for a roll call, which needs about 0.5 square metres per person standing. A margin is added for visitors, contractors and delivery drivers who are rarely on the headcount but always present in an evacuation.
Assembly area
Area = occupants x area per person x (1 + margin)
Preliminary estimate only. Assembly point location and capacity must be established in the site emergency plan by a competent person.
Area = occupants x area per person x (1 + margin). An assembly point must hold everyone comfortably enough for a roll call, which needs about 0.5 square metres per person standing.
Distance from the building, at least the building height away and clear of falling glass; not blocking fire service access; and being reachable without crossing a road where possible.
This calculator takes 3 inputs: People assembling, Area per person, Margin for visitors and contractors. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.