Building BIOS Architecture

A Building Operating Mode is an approved coordinated configuration of services, permissions, resources, and state rules appropriate to a defined situation.

The BIOS shall support, as applicable:

Construction Mode;

Installation Mode;

Commissioning Mode;

Normal Occupied Mode;

Normal Unoccupied Mode;

Reduced-Energy Mode;

Maintenance Mode;

Inspection Mode;

Partial Shutdown Mode;

Utility-Outage Mode;

Severe-Weather Mode;

Fire Emergency Mode;

Other Emergency Mode;

Evacuation Mode;

Shelter Mode;

Recovery Mode;

Decommissioning Mode.

Each Operating Mode shall define:

activation authority;

entry conditions;

required systems;

optional systems;

disabled systems;

control priorities;

resource allocations;

permitted user actions;

alarm behavior;

data-retention requirements;

exit conditions;

fallback mode.

Modes shall be coordinated with physical safety systems. The BIOS shall not create an operating mode that disables required fire, structural, electrical, or emergency protection.

The current mode shall be visible to authorized occupants, operators, maintainers, and emergency responders where relevant.

Mode changes affecting safety, access, utilities, or automation shall generate events and may require confirmation of the resulting physical state.

Automatic mode selection may be permitted for predefined low-risk conditions. Safety-critical mode changes shall follow the applicable authority and verification requirements.