📘 RTT Facilities — Glossary

Canonical Terms & Definitions

This glossary defines canonical terminology used across the RTT Facilities domain.

It is grounded in the RTT Facilities Playbook and applies to all Facilities documentation, including domain‑specific initiatives such as RTT‑AGERI.

Domain extensions may add terms, but must not redefine terms listed here.

Asset Class#

A category of physical infrastructure systems with shared characteristics, lifecycle patterns, and risk profiles (e.g., electrical, water, transportation).

Capital Cycle#

A long‑horizon planning interval used to align modernization decisions with funding, governance, and lifecycle timing (typically 10, 20, or 50 years).

Corridor#

A spatially and functionally linked grouping of assets that share exposure, load, and risk characteristics.

Cross‑System Propagation#

The transmission of risk, degradation, or failure from one facilities system to another (e.g., electrical failure impacting water or communications).

Decommissioning#

The governed retirement of assets at the end of their service life, including safety, environmental, and continuity considerations.

Domain Extension#

A facilities initiative focused on a specific asset class or problem space that operates within the shared Facilities substrate (e.g., RTT‑AGERI).

Drift#

Gradual degradation or deviation from expected performance that accumulates over time and increases failure risk.

Drift Scoring#

A structured assessment of asset or system degradation used to inform monitoring, intervention, and modernization timing.

Facilities#

The physical, operational, and communicative systems that enable cities and regions to function safely, reliably, and continuously.

Facilities Playbook#

The original conceptual capture defining Facilities as living systems governed across lifecycle, risk, capital, and trust.

Governance#

The structures, processes, and accountability mechanisms used to guide decision‑making, intervention, and modernization.

GHQ#

The global governance layer responsible for standards, scoring frameworks, audits, and cross‑domain alignment.

Harmonics#

Oscillatory, resonant, or frequency‑driven behaviors that accelerate degradation and destabilize system performance.

Harmonics Scoring#

A structured assessment of resonance‑driven stress used as an early indicator of systemic risk.

Intervention#

A governed action taken to prevent, mitigate, or respond to infrastructure risk or failure.

Intervention Class#

A category of intervention defining urgency, scope, and governance requirements (Preventive, Planned, Emergency).

Lifecycle#

The full sequence of phases through which facilities assets pass: design, construction, operation, maintenance, modernization, and decommissioning.

Modernization#

Planned, capital‑aligned replacement or reconfiguration of assets to address systemic risk and future conditions.

Modernization Cycle#

A defined capital timing window (10 / 20 / 50 years) used to govern when modernization occurs.

Propagation#

The spread of stress, degradation, or failure across assets, corridors, systems, or societal layers.

Public Trust#

The confidence residents place in facilities systems to operate safely, transparently, and predictably.

Resilience#

The ability of facilities systems to absorb stress without cascading failure or loss of essential function.

Scoring Framework#

A structured method for assessing risk, degradation, or performance to inform governance and action.

Stress Amplifier#

A condition that increases the severity or speed of degradation or propagation (e.g., climate, aging, deferred maintenance).

System#

A network of interdependent assets that collectively provide a functional service (e.g., electrical distribution).

Tactical Stabilization#

Short‑horizon interventions intended to reduce immediate risk and extend asset service life.

Canonical Status#

This glossary is canonical.

All Facilities documentation must reference these definitions.
Domain‑specific glossaries may extend this list but must not redefine existing terms.