Building Definition Language

A BDL document shall contain defined structural regions.

The standard order shall be:

document header;

namespace declaration;

imports;

unit and coordinate context;

Profile declarations;

parameter declarations;

Type or template declarations;

Entity declarations;

Relationship declarations;

constraints and assertions;

evidence references;

exports.

Example:

bdl_document House_Definition {

bdl_version: "1.0";

document_id: "s05:bdl:house-001:design";

configuration: as_designed;

namespace project = "https://system05.org/project/house-001";

import s05.structural;

import s05.cartridge;

import profile.US_NJ_Residential;

units {

length: mm;

force: kN;

temperature: °C;

}

coordinates Building_Coordinates {

origin: [0 mm, 0 mm, 0 mm];

orientation: true_north 18 deg;

}

building House_001 {

id: "s05:building:house-001";

}

}

The concrete order may be relaxed in serialized formats, but the semantic dependencies shall remain resolvable.

A document shall identify whether it is complete, partial, reusable, proposed, or authoritative.