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ELI5
BS EN ISO 21597-2:2020
Information container for linked document delivery. Exchange specification. Link types
2022-07-15
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Dimensionality
A dimension of space, such as width, height, or length. can be zero-dimensional (location point), one-dimensional (e.g. line, curve, path), two-dimensional (e.g. surface, face), or three-dimensional (e.g. surface, face) (e.g.
2022-06-29
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Dictionary
Work in Progress (WIP)
A supply-chain management term describing partially finished information awaiting completion. In other words, the Information model is not to be used by any other project party. Before progression onto the next
2022-07-11
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energy let-through of a device (I2t)
I2t The energy let-through of a device in A2s. The total amount of energy let through by a protective device for a given level of fault current at a stated
2023-02-05
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Rating factors
Rating factors are divided into the nominal rating of the circuit protective device (In) to determine theminimum current-carrying capacity (Iz) of a cable in a circuit. For example:Iz = In/(Ca
2023-02-05
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exchange requirement (ER)
defined set of information units that needs to be exchanged to support a particular business requirementat a particular process phase (or phases)/stage (or stages) BS EN ISO 29481-1:2017
2022-07-24
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BS EN 17412‑1:2020
Building Information Modelling — Level of Information NeedPart 1: Concepts and principles
2022-07-15
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Residual Current Device (RCD)
AResidual Current Device (RCD) is amechanical switching device or association of devices intended to cause the opening of the contacts when the residual current* attains a given value under specified
2023-02-05
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2022-06-29
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System of systems
A system of systems is a collection of many different systems, each with its own characteristics. [1] System theory assumes that certain underlying concepts and principles are applicable to different
2022-07-11
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class
description of a set of objects that share the same characteristics Note 1 to entry: The characteristics may be embodied by the use of properties, operations, methods, relations, semantics, etc.Note
2022-07-24
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minor change
change that does not affect the meaning, function or intended use NOTE 1 Definition applies to properties and groups of properties.NOTE 2 Examples of this type of change are new
2022-07-24
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IDM standard
BS EN ISO 29481-1 Building information models – Information delivery manual (IDM) PD ISO/TS 12911:201
2022-07-24
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Portable document format (PDF)
It’s a versatile file format developed by Adobe that allows people to easily present and exchange documents – regardless of the software, hardware, or operating systems used by anyone who
2022-07-24
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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
2022-07-04
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Blog
VADs
Guide to Visual Alarm Devices (VADs) in Fire Safety In high-noise workspaces or locations requiring hearing protection, Visual Alarm Devices (VADs) play a critical role in fire safety. They ensure
2023-12-05
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Dictionary
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
2022-07-24
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Soil Thermal Resistivity
Relates to the ability of the soil, in which the cable is installed, to conduct heat energy away from the cable. The rating factor Cs is applied in cable sizing
2023-02-05
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2022-07-27
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Instructions
Project Template_RVT_2024
Revit Electrical Project Template 2024 v24.1.1 Template For: Electrical Engineers, Bim Managers, Electrical Designers Setup: Typically 2–4 hours — quicker for experienced users. View Details Technical Details Released: Jul 24,
2025-07-24
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DWG
DWG (“drawing format”) is a binary file format licensed by Autodesk and used for storing two and limited three-dimensional design data and metadata. It is the native format for several
2022-07-11
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Security Management Plan
A document (or part of a document) identified in the Information Particulars setting out the security requirements for carrying out the Works in a security-minded way, including any policies, protocols,
2022-07-11
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Level of model development
Level of model maturity [ISO*] *Term based on experience. does not form part of ISO
2022-07-27
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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
2022-07-11
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BS 8536-2:2016
Briefing for design and constructionPart 2: Code of practice for asset management (Linear and geographical infrastructure)
2022-07-15
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Common Data Environment (CDE)
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
2022-07-15
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process
set of interrelated or interacting activities that transforms inputs into outputs [SOURCE: ISO 9000:2005, definition 3.4.1 (without notes)] ISO 14040:2006(en), 3.11 It is a PAS1192 term replaced by term ‘workflow’ in ISO
2022-07-27
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Dictionary
jet reaction
nozzle reactionforce acting in the opposite direction to the water stream leaving the nozzle BS 4422 2005 “Jet reaction,” also known as “nozzle reaction,” is a fundamental concept in fluid
2023-12-05
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Clash Detection
Clash detection, coordination analysis and data checks shall be carried out by the BIM Coordinators against the latest shared models. The workflows involve a combination of visual and automated checks
2022-07-04
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End Event (Message)
At the end of the process, this type of end indicates that a message is sent to a participant.[1] Symbol N Method and Style: A levels-based methodology for BPM process
2022-07-04
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Management of duplicates
The procedure to remove duplicate properties shall be carried out on the relevant attributes. The management of duplicates cannot be fully automated. BS EN ISO 23386:2020
2022-07-24
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Master Schedule
The purpose of a project schedule is to define how the project should be delivered and maintained based on the available resources. The development of a timetable is the first
2022-07-11
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How To
Emergency Lighting Standards and Regulations
BS 5266‑1:2025 – whats changed? Status & scope. The new edition was published on 29th and came into effect on 31 October 2025, withdrawing BS 5266-1:2016. It is intended to be
2025-07-19
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objective
results to be achieved The objective can be strategic or operational; it can relate to different disciplines such as financial, health and safety, or environmental. The targeted results can be
2022-07-24
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Blog
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
2024-07-22
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Supporting Information
Supporting information shall be used where applicable and relevant to fully understand and evaluate information requirements or acceptance criteria. Supporting information includes but is not limited to: Existing site surveys
2022-07-11
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How To
Please can you confirm if the life system system has to be lidded?
Please can you confirm if the life system system has to be lidded? There is no requirement for the life system to be lidded. A lid is effectively required
2025-09-23
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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
2022-07-27
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Dictionary
Task Information Delivery Plan (TIDP)
schedule of information containers and delivery dates, for a specific task team [cited from ISO 19650-2:2018(en), 3.1.3.4] The Task Information Delivery Plan (TIDP) is defined by the ISO 19650 framework
2022-07-15
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UML diagram
provides the data structure for data templates using objects, collections and relationships between them. The multiplicities in the UML diagram specify the range of allowablecardinality values, giving a specification of
2022-07-24
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Project Information Requirements (PIR)
Project Information Requirements (PIR) its a BS EN ISO 19650 term introduced to replace the PAS 1192 term Plain language questions (PLQ) PLQ and PIR are both expressions of the
2022-07-27
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framework
structure of processes and specifications designed to support the accomplishment of a specific task[ISO/IEEE 11073-10201:2004, definition 3.22] PD ISO/TS 12911:2012
2022-07-24
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Nominal line voltage to earth (Uo)
Uo Nominal line voltage to earth. Assumed to be 230 V for grid connected systems.
2023-02-05
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agent
…’An agent is just something that acts (agent comes from the Latin agree, to do). Of course, all computer programs do something, but computer agents are expected to do more:
2022-07-11
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Facility management (FM)
Facility management (FM) is an organizational function that integrates people and processes within the built environment to improve the functionality, comfort, safety, and efficiency of the core business.
2022-07-27
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systems thinking
System thinking is an approach to integration based on the idea that each component or part of a system acts differently when isolated from its environment and other parts of
2022-07-11
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2022-07-24
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Data Object
Data objects provide information about the activities that must be performed and/or the results that they produce. Elements of data objects must be contained within process or sub-process elements. Data
2022-07-01
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2022-07-24
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BS ISO 21500:2012
Guidance on project management ISO 21500 describes guidelines for managing projects and processes in project management, including standards, methods, and processes. The standard is intended to align with related international
2022-07-15
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