The Ultimate BIM Knowledge Hub
Your one-stop resource for BIM electrical.
Revit Guides
Data Management
ELI5
Nominal line voltage to earth (Uo)
Uo Nominal line voltage to earth. Assumed to be 230 V for grid connected systems.
Facility Data
The non-graphical information attached to objects in the Model that defines various characteristics of the object. Facility Data can include properties such as parametric values that drive physical sizes, material

Volume strategy
ELI5-S1: BIM Basics E10: Volume Strategy (spatial) explained Introduction Volume Strategy enables information management, spatial coordination, and concurrent engineering, ultimately fitting together like a complex 3D jigsaw puzzle, where each
Ambient temperature rating factor (Ca)
Ambient temperature rating factor used for calculating theminimum required cable size. For cables installed in air, values for this factor are given in BS7671:2018 Table4B1.For ground installations, values are given
Thermal resistivity of the soil rating factor (Cs)
The rating factor Cs is applied to cable sizing calculations for cable installed in the ground. Its value varies according to the thermal resistivity of the soil in which the
Point of Adoption
a moment in time where an organisation’s readiness, change into organisational capability/maturity Macro-BIM adoption: Conceptual structures Bilal Succar Mohamad Kassem Tweet The Point of Adoption (PoA) is not to be
identification
The “identification” is ISO 19650 term equivalent to PAS 1192 term ‘naming’

Digital Plan Of Work (DPoW)
Digital Plan Of Work (DPoW) forms a framework that supports informed and consistent decision making by project teams, at each work stage, helping to deliver agreed and reliable information. The
business process modelling notation (BPMN)
Business Process Modelling Notation (BPMN) is a flow chart method for modelling the steps of a planned business process from beginning to end. It is a critical component of Business

Delivery Team context of information exchange
ELI5-S2 BIM in Practice E3 Delivery Team context of information exchange ELI5-S2: BIM in Practice E3: Delivery Team context of information exchange explained Understanding the context of information exchange from
risk register
means a risk register containing the risks associated with the timely delivery of information as may be identified in the Information Particulars and/or provided in accordance with the Information Standard.
Permitted Purpose
A submittal state defining the intent or suitability. Permitted Purpose means any purpose related to the Works (and/or (without limitation) the construction, refurbishment, extension, operation, management and/or maintenance of the
Stage 2 Maturity
BIM at Maturity Stage 2 according to the ISO 19650 Framework is “the use of a shared digital representation of a built asset to facilitate design, construction and operation workflows
Value Stream Mapping
A diagram of every step involved in the material and information flows needed to bring a product from request to delivery. [1] [1] The Massachusetts Port Authority, 2015. BIM Guidelines

Cutting Geometry with Nested Void Families in Revit
1. Generic Host in the Face-Based Family When you are in the face-based family, create void, and Cut the Generic Host This setup essentially simulates the cutting action within the
Unified Cloud Platform (UCP)
A unified cloud platform (UCP) has been introduced to facilitate the integration of multiple cloud services into a single cloud environment. The UCP is essentially a cloud management multi-platform that
Value Stream
Includes all the processes and activities used to design, produce and deliver the product or service to the Customer.[1] [1] The Massachusetts Port Authority, 2015. BIM Guidelines for Vertical and
Openness
in relation to data and information – also linked to interoperability means that it is provided or made available in a format that can be accessed and used withoutrecourse to
Product Data Template (PDT)
The document aimed to be used by manufacturers and consumers where information about a product, is collated in a standardised and structured way. The information is structured in the form
Overload rating (Ir)
Ir The adjusted overload rating of an overcurrent protective device, in Amperes.
Information Protocol
The First Edition of the Building Information Model (BIM) Protocol published in 2013 identifies and puts into place specific obligations, liabilities and associated limitations on the use of the Building
Pre-appointment BEP
Pre-appointment BEPs communicates the delivery team’s intended approach to the information management process in the project, it is submitted as part of the prospective Lead Appointed Party tender response. For
Virtual Design and Construction
Virtual Design and Construction (VDC) is the use of design models and project information to apply construction processes in a virtual environment to reduce time, cost, and ensure design intent.
Association
An association is used to link data and artefacts to flow objects. Non-flow objects, such as text and graphics, can be associated with flow objects and flow.[1] Symbol [1] Silver,
tension between hope and ambiguity
term coined by Deloitte[1], it is a current situation where whilst businesses conceptually understand the significant changes that information Management (IM) and technology may bring, they have divergent agendas and
Physical Asset
A physical asset is an item of economic, commercial, or exchange value that has a material existence.Physical assets are also known as tangible assets.For most businesses, physical assets usually refer
Design-Bid-Build
A contract type There is a sequential award of two separate contracts; the first contract is for design services; the second contract is for construction; design and construction of the

jet
extinguishing medium, usually water, leaving a nozzle as a continuous stream, water spray, or waterfog (mist) BS 4422 2005 Each of these methods has its own advantages and is chosen
vulnerability
weakness that can be exploited to cause harm [cited from ISO 19650-5:2020(en), 3.15]
Key Performance Indicator (KPI)
KPI is an abbreviation for key performance indicator, which is a quantifiable measure of performance over time for a specific goal. KPIs provide goals for teams to aim for, milestones
Committee
This could be: a Technical Committee (TC), which develops standards in a certain sector or industry; a Subcommittee (SC), which addresses a specialized area within a TC; a Project Committee
blockchain
The blockchain is a transaction database shared by all nodes involved in the system based on the Bitcoin protocol. It is a data structure consisting of linked blocks (e.g. confirmed
Last Planner System®
The collaborative, commitment-based planning system that integrates “should-canwill-did planning” (pull planning, make-ready look-ahead planning with constraint analysis, weekly work planning based upon reliable promises, and learning based upon analysis of
security breach
infraction or violation of security (3.7) [1] 1 Online Browsing Platform (OBP) [WWW Document], n.d. URL https://www.iso.org/obp/ui#search (accessed 4.10.21).
Max Zs
Themaximum value of earth fault loop impedance (Zs) that will allow the protective device in a circuit to disconnect an earth fault within the prescribed time. Example: if themaximum earth
Construction Products Regulation (CPR)
Construction Products Regulation (CPR) https://ec.europa.eu/growth/sectors/construction/product-regulation_en#:~:text=The%20Construction%20Products%20Regulation%20(CPR,the%20performance%20of%20construction%20products.
Design current (Ib)
Design current or ‘Ib’ in Amperes.The level of current to be carried by a circuit in normal service.
Conditions of Satisfaction
An explicit description by a Customer of all the actual requirements that must be satisfied by the Performer in order for the Customer to feel that he or she received

Life Safety Generator
Life Safety Generator selection guide Copy If the secondary power supply is provided for firefighter’s lift, it must be capable of operating the firefighter’s lift at its full rated load
BS ISO 44002:2019
Collaborative business relationship management systems Guidelines on the implementation of ISO 44001
Geo-referencing
A BIM is said to be geo-referenced when the BIM is located with respect to one of the standard geographic survey coordinate grids established to represent locations on the Earth’s
individual thing
the concept that classifies any real-world or imaginary thing that has an individuality that is not dependent on a commonality between things Note 1 to entry: This standard is about kinds
suitability
degree to which a product, system or information provides functions that meet stated and implied needs when used under specified conditions [cited from: ISO/IEC 25010:2011(en), 4.2.1, added word ‘information’] appropriateness
Business goals
Business goals drive organisational outcomes, helping to keep the focus on the company’s important short and long term priorities. The goals must be defined, understood, tracked, analysed, and measured to

UK Earthing & Bonding Design Reference
UK Earthing & Bonding Design Reference (Edition 2025 – aligned with BS 7671:2018+A2:2022, Amendment 3 (2024), and draft Amendment 4 (2026), also drawing from official UK Power Networks standards) Scope,
intrinsic aspect
role that an aspect plays in a relationship with a possessor and that is dependent on the aspect as well as on the possessing object Note 1 to entry: Typically the
information exchange
verb act of satisfying an information requirement (3.3.2) or part thereof [cited from ISO 19650-1:2018(en), 3.3.7]
Activity
An identifiable chunk of work with recognized prerequisites to begin and a recognized State of Completion – or Conditions of Satisfaction. Another way to look at an activity – establish








