Standalone Calculators

Spatial Separation

Max unprotected opening area in an exposing building face based on limiting distance, face dimensions, occupancy, and sprinkler status.

OBC Art. 3.2.3.1 · Tables A–E

Plumbing Fixture Count

Minimum water closets, urinals, and lavatories required by occupancy type and occupant load.

OBC Art. 3.7.4 · Tables 3.7.4.3 – 3.7.4.9

OBC Code Calculator

Occupant load, travel distance, and exit requirements in one place. All values are starting points. Verify against the applicable OBC edition.

Primary Occupancy

Sprinklered throughout

Occupant Load

OBC Table 3.1.17.1 · Art. 3.1.17.1

Not covered by this table: fixed seats → use seat count · residential → 2 persons per sleeping room · Group B → use designed or licensed capacity

m²

Travel Distance to Exit

OBC Art. 3.4.2.5

Select primary occupancy above.

Exit Requirements

OBC Art. 3.4.2.1 · 3.4.3.2

Occupant Load

persons

Select primary occupancy above to see width table.

Number of exits: every floor area requires at least 2 exits (Art. 3.4.2.1.(1)).

Values based on OBC 2024 and 2012 editions (same for these articles). All results are a starting point. Verify against the specific edition applicable to your project.