Building Definition Language

Topology Representation defines how Entities are connected and related independently from detailed geometry.

BDL shall support:

structural topology;

Interface topology;

electrical topology;

fluid topology;

thermal topology;

communication topology;

control topology;

spatial topology;

dependency topology;

lifecycle topology.

A topology shall contain:

topology nodes;

typed edges;

direction;

capacity;

state;

configuration;

verification status.

Example:

];

];

}

Topology and geometry shall remain coordinated but distinct. Two Entities may be topologically connected while their geometric route is defined in a separate model.

The model shall support topology queries such as:

upstream and downstream Entities;

supported and supporting Components;

affected systems after isolation;

alternate paths;

single points of failure;

disconnected required nodes;

prohibited loops;

unreachable emergency devices.

Topology changes shall produce a Configuration Change and trigger validation of all affected dependencies and capabilities.