Building Definition Language

An Engineering Requirement defines a technically measurable, verifiable, and traceable condition governing design, manufacturing, construction, operation, or lifecycle performance.

Each Engineering Requirement shall include:

Requirement ID;

requirement category;

subject;

source;

quantitative or logical condition;

units;

applicable configuration;

applicable lifecycle stage;

verification method;

acceptance criterion;

evidence class;

responsible authority;

exception process.

Engineering Requirement categories may include:

structural;

geometric;

material;

electrical;

fluid;

thermal;

environmental;

fire;

accessibility;

digital;

robotic;

manufacturing;

lifecycle.

Example:

engineering_requirement ER_Node_Capacity_001 {

subject: @Node_N01;

category: structural;

require:

@Node_N01.capacity.axial_compression

>= @Node_N01.demand.axial_compression;

applies_in: ultimate_limit_state;

source: @Structural_Engineering_Profile;

verification: calculation_and_test;

severity: critical;

}

Requirements shall identify whether they originate from:

law or regulation;

recognized technical standard;

System05 constitutional rule;

Engineering Profile;

project engineering decision;

owner requirement;

manufacturer limitation;

research assumption.

A requirement imported from an external source shall reference the exact edition, section, interpretation, and applicable jurisdiction where necessary.