Calculation methods
Definitions, formulas, units and worked examples behind the calculators and articles. Each method states its assumptions and limits.
Cinema sightline C-value
The C-value is the vertical gap between the line from a viewer’s eye to the bottom of the picture and the eye of the person in the row ahead. UNIC calls this clearance c. It is measured above the eye, not above the top of the head.
Erlang C queue model
Erlang C gives the chance an arrival must wait when identical counters share one first-come-first-served queue, with Poisson arrivals and independent exponential service times. The queue calculator uses this steady-state M/M/c model.
Hot desk ratio and shortage probability
The hot desk ratio is the number of people sharing divided by available desks. The binomial model adds the chance that more people attend than there are desks, assuming independent attendance and full-day stays.
Seating capacity from a checked layout
Laydyne counts seats in a generated furniture layout after checking clearances and removing furniture groups that introduce findings. It does not convert floor area directly into a legal occupant load.