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ELI5

LTF_Lighting-Fixture Ring
Create unlimited lighting variations with parametric control.
The PD_LTF_Lighting-Fixture_Luminaire-Ring Family is a powerful, fully parametric Revit family that allows users to create limitless lighting fixture configurations.

Arc Fault Detection Devices (AFDDs)
Arc Fault Detection Devices (AFDDs) in the UK: Technical Requirements and Implementation Executive Summary Arc Fault Detection Devices (AFDDs) represent a significant advancement in electrical fire safety. This whitepaper provides
Miller’s law
Argument introduced by Miller, G. A., suggests that the number of objects an average human can hold in short-term memory is 7 ± 2.[1] From a practical standpoint, this means
Model Production Delivery Table (MPDT)
An MPDT its old PAS 1192 term, the MPDT defines who produces what, when and to what level of detail. The recent publication of ISO 19650 standards does not include
Strategic Objectives of BEP
Objectives of BEP shall be allignwed with Exchange Information Requirements (EIR), an example of Strategic Objectives for a project have been listed below: Meet Level 2 BIM compliance, in accordance
Fixed Equipment
Equipment designed to be fastened to a support or other wise secured in a specific location.

single source of truth
In AEC industry with reference to information systems management, the single source of truth refers to Common Data Environment (CDE) The single source of truth is a method of structuring
Subject to Simultaneous Overload
Where circuits are grouped, there are two availablemethods of calculating the rating factor Cg to be applied: [BS7671:2018,Appendix 4,5.1.2:Equation 2] [BS7671:2018,Appendix 4,5.1.2:Equation 3,4]

CDE state
ELI5-S1: BIM Basics E5: CDE areas and states This term replaces the ‘CDE area’ PAS 1192 term, the idea is the location of the information (container) is not important but
Cost Led Procurement
A procurement method introduced by Constructing Excellence and the Cabinet Office intended to allow industry to use its experience and knowledge to develop innovative solutions through leveraging design, materials, subcontracting, direct labour

LTF_Lighting-Fixture Circular
LTF_Lighting-Fixture_Luminaire-Circular vv22.1.1. Family For: Electrical Engineers, Bim Managers, Electrical Designers Setup: 10 – 30 minutes View Details ▼ Technical Details Released: Feb 9, 2025 Updated: Jul 5, 2025 Compatibility Notes:
Employer’s Information Requirements (EIR)
The PAS 1192 term Employer Information Requirements (EIR) has been replaced by Exchange Information Requirements (EIR) on projects where ISO 19650 standards are applicable. Employer’s information requirements (EIR) also use
Integrated Project Delivery
Integrated Project Delivery (IPD) is a collaboration of all parties, systems and practices to optimize and maximize project success. Defined by the American Institute of Architects, IPD is typically applied
Project Information Standards
Project Information standards shall be covered within the BIM Execution Plan (BEP). Standards In line with BIM Goals and Uses to ensure continuity that information containers are structured, coordinated, managed
data dictionary
centralized repository of information about data such as meaning, relationships to other data, origin, usage and formatNote 1 to entry: The definition is from IBM Dictionary of Computing BS EN
Built Environment
All forms of buildings (residential, industrial, commercial, hospitals, schools), all economic infrastructure (above and below ground) and the urban space and landscape between and around buildings and infrastructure3, as well
Technical Committee (TC)
a Technical Committee (TC), which develops standards in a certain sector or industry; https://www.iso.org/glossary.html
BS 11000‑2:2017
Collaborative business relationship management systemsPart 2: Guide to implementing BS ISO 44001

Problem Solving Process
Understanding the Problem-Solving Process
Effective problem-solving is at the heart of success in any field. Drawing inspiration from the book “General Relativity for Babies” by Chris Ferrie, which simplifies complex topics into easy-to-understand concepts, I have created a straightforward guide to the problem-solving process.

LTF_Lighting-Fixture Rectangular
LTF_Lighting Fixture_Generic Rectangular Light v22.1.3 Family For: Electrical Engineers, Bim Managers, Electrical Designers Setup: 10-30 minutes View Details Technical Details Released: Feb 2, 2025 Updated: Jul 5, 2025 Regional Variants:
Model Upload Workflow
3D models shall be synchronized with the central cloud model after daily work is done to ensure the rest of the project team are coordinating with the latest information. All
Collaborative Design
Working with different teams is probably the most difficult part of the design process. It is important to note that a collaborative design process is not about someone else creating
Semi-enclosed fuse rating factor (Cf)
The rating factor Cf = 0.725 is applied to cable sizing calculations for any circuit protected by a semi-enclosed fuse to BS3036.
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
inertia
In the context of BIM and Digital Construction, the term is referred to as institutional and personal inertia to change, one of the most common barriers to BIM implementation.

information container
ELI5-S1 BIM Basics E12_Information Container explained A persistent set of information retrievable from within a file, system, or application storage hierarchy. [1] named persistent set of information retrievable from within
Project delivery team
In respect of asset lifetime PAS 1192-2:2013, describes one project delivery team, the term is connected with word ‘contract’ meaning one or many companies or individuals employed either directly or
Cyber-Physical Systems
Systems that include integrations of computation, networking, and physical processes with feedback loops where physical processes affect computations and vice versa4. An example of a Cyber-Physical System is a Digital

Organizational Drivers
The Organizational Driver is a term used to describe the initial component in the information exchange sequence. It represents the steps and actions involved in initiating the exchange process.

Complete information
adjective In Architecture Engineering and Construction (AEC), complete information is information which includes all the necessary and typical parts or elements, lacking nothing. For the information to be deemed complete,
Circuit Protective Conductor (CPC)
Acircuit protective conductor (CPC) connects exposed-conductive-parts* of equipment to themain earthing terminal. *Conductive part of equipment,which can be touched and which is not normally live,but which can become live when
The Centre for Digital Built Britain
The Centre for Digital Built Britain (CDBB) CDBB is a partnership between the University of Cambridge and The Department for Business, Energy and Industrial Strategy (BEIS). It is the custodian
workflow management system
Workflow management systems allow organisations to identify and control activities associated with a business process. Effective workflow management offers the opportunity to measure and analyse the execution of the processes
BS ISO 55002:2018
Asset management — Management systems Guidelines for the application of ISO 55001
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).
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
Semantic Web
The Semantic Web, as defined by Ontotext[1] is the extension of the existing information and data on a network (or Web) to include data descriptors, which are intended to allow
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

federation strategy
ELI5-S1: BIM Basics E4: Federation Strategy Explained The purpose of the federation strategy and the Information Container (model) breakdown structure is to help plan the production of information by separate
BS EN ISO 19650-2:2018
Organization and digitization of information about buildings and civil engineering works, including building information modelling (BIM) — Information management using building information modelling Part 2: Delivery phase of the assets
Intermediate Event (Link/Catching)
Paired link events can also be used as “off-page connectors” in order to print a process across multiple pages. Within the process level, they can also be used as generic
Builders work in connection (BWIC)
Coordination of Builders work in connection to services i.e. openings in walls or floors for MEP Services It is anticipated that as a minimum, all builders work openings of 50x50mm
Assignment matrix
Responsibility matrix [ISO19650] In ISO 19650 there is a principle to develop responsibility matrices to cover information management activities and information delivery. Responsibility matrix [PAS1192] The former is illustrated as
Intermediate Event
An intermediate event is something that occurs between the beginning and end of a process. Triggers can be “caught” or “thrown” by intermediate events. [1] Symbol 1] Silver, B. (2009).

Appointed Party context of information exchange
ELI5-S2: BIM in Practice E6: Appointed Party context of information exchange Understanding the Appointed Party (T2-T4) Context of Information Exchange in BIM Welcome to the final instalment of our ELI5-S2
Tier 2
In the construction industry, Tier 2 is a Contractor referred in ISO 19650 as the Appointed party with a sub-contract who provide goods or services directly to the Lead Appointed
System of engagement
The System of Engagement is defined as a platform that manages supported digital engagement, of systems like Browsing, Web Chat, Messaging, videos (Facebook, WhatsApp, TEAMS, ZOOM, Signal, Slack, etc.), various
Post-contract BEP
This PAS 1192 term has been superseded by ISO 19650 term Post-appointment BEP. It is a BIM Execution Plan (BEP) which shall be re-submitted by the Lead Appointed Party and







