The Ultimate BIM Knowledge Hub

Your one-stop resource for BIM electrical.
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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

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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

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expert

person who, through knowledge or experience, has competence to give an opinion in the fields about which he/she is consulted[SOURCE: ISO 13302:2003, 3.10, modified — The domain “” has been

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Dictionary
Jarek Wityk

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

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Dictionary
Jarek Wityk

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

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Depth of lay rating Factor (Cd)

The rating factor Cd is applied to cable sizing calculations for cable installed in the ground. Its value varies according to the depth of lay installed. See BS7671:2018,Table4B4. Indicates the

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Start Event (Message)

A message is received from a participant, which initiates the process. The actual recipient of the message can be identified by connecting the event to a participant via a message

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Graphical symbols for electrical connections and components. Source: The Institution of Engineering and Technology (IET), “Units & Symbols for Electrical & Electronic Engineering,” © The IET 2016, p. 22. Used with permission where applicable. Available at: www.theiet.org.
Dictionary
Jarek Wityk

Electrical Abbreviations, Symbols & Acronyms

Electrical Abbreviations, Symbols & Acronyms Reference This table contains 377 commonly used electrical abbreviations and acronyms, covering everything from current ratings and protection devices to power systems and components.It’s designed

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Cross-sectional view of a residential building’s fire core, showing protected stairwells, lift shafts, fire-rated partitions, and service risers enclosed within fire-resistant construction, designed to maintain vertical compartmentation and safe evacuation routes during a fire.
How To
Jarek Wityk

Secondary Supply – diverse cable route

This guidance covers the routing of secondary supply cables from a life safety generator to the ATS (Automatic Transfer Switch), and the final equipment with reference to:

BS 7671:2018+A2:2022, specifically Section 560: Safety Services

BS 8519:2020, with emphasis on Clause 7 (Cable Routing) and Clause 11 (Cable Selection)

The goal: clarify requirements for the diverse cable routing and maintain circuit integrity under fire conditions for systems that support life safety and fire-fighting applications, such as sprinkler pumps, fire-fighting lifts, and smoke control systems.

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definition

representation of a concept by a descriptive statement which serves to differentiate it from related concepts Note 1 to entry: A definition may be expressed as natural language text (a textual

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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

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Appointing party

Appointing party term introduced in BS EN ISO 19650 it is meant to replace PAS 1192 term ‘Employer’ ISO 19650 term depends on where in the hierarchy the employer is

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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

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graphical

The PAS1192 term has been replaced by ISO19650 term ‘geometrical’ Geometrical is more appropriate to describe spatial positioning and relationships

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PAS1192-2_2015

The Publicly Available Specification (PAS) 1192 part two was published in February 2013; the specification was based on existing Code of practice BS 1192 dated 2007 amended in October 2015

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Information Maturity

a current state of development of an organisation to utilise information in an advanced strategic manner to increase productivity, measured against an assumed optimal state

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Risk management

Risk management provides an overview of using risk analysis as an organized method for identifying and measuring risks. How to effectively assemble and manage a project team and effectively assemble

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model validation checklist

The example checklist consists of checks which assure quality within models and information, to eliminate errors and achieve desired project outcomes. Table 1 – Model Validation Checklist Check Definition Project

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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

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Dictionary
Jarek Wityk

volume

ELI5-S1: BIM Basics E10: Volume Strategy (spatial) explained a term defined by BS 1192:2007 means a spatial subdivision of a project to allow multiple people to work on Project Information

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Ground rating factor (Cc)

The rating factor Cc = 0.9 is applied to cable sizing calculations for cables installed in the ground (Installation Methods 70 to 73). See BS7671:2018,Appendix 4,Sections3,4 and 5.1.1.

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Certification

Assurance given by an independent certification body (ISO does not perform certification) that a product, service or system meets the requirements of a standard. https://www.iso.org/glossary.html

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cost plan

statement showing an apportionment of an estimate (3.7.9) or of an agreed budget between cost (3.7.1) headingsNote 1 to entry: For example, the cost plan might be broken down into building elements. [1] 1 Online Browsing Platform (OBP)

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Instructions
Jarek Wityk

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:

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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

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Parametric behaviour

The parametric behaviour of an object describes whether its shape, position, and orientation are designed to be dependent on other information associated with the object or the context in which

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attribute

Depending on the technology discussed, the term attribute can be treated as equivalent to a property or as a set of attributes, such as the number of elements in a

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system

interacting objects organized to achieve one or more stated purpose [SOURCE: ISO/IEC/IEEE 15288:2015, 4.1.46, modified — The words “combination of” at the beginninghave been removed; “elements” has been replaced by

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Product Data Definition

A Product Data Definition (PDD) document intended to provide a consistent methodology for the definition, creation, management and sharing of product information throughout the life cycle of an asset, based

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Back-up Protection

Circuit-breaker manufacturers publish tables showing combinations of pairs of circuitbreakers, one upstream,one downstream,where the downstream device can be used at a location where the prospective fault current (Ipf) is higher

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BS 8536-2:2016

Briefing for design and constructionPart 2: Code of practice for asset management (Linear and geographical infrastructure)

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Spacial Asset

A spacial asset can be defined as a specific location such as a zone, boundary, area, floor or room with a known location and extents.For most businesses, spacial assets usually

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Two Stage Open Book

A procurement method introduced by Constructing Excellence and the Cabinet Office where a client invites prospective integrated teams to bid for a project based on their ability to deliver an outline brief

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Workspace

A collection of content libraries and supporting files that define and embody a BIM standard. A workspace includes BIM libraries such as wall types, standard steel shapes, furniture, HVAC fittings,

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Asset Information Model (AIM)

The Asset Information Model or AIM is a term used to define the set of information gathered from all sources that support the continuing management of an asset

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Appointed party

The appointed party term introduced in BS EN ISO 19650 it is meant to replace PAS 1192 term ‘Supplier’ Typically it means Tier 2 and below Contractors Who can become

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NWD

NWD designates the published version of a Navisworks file with all loaded models, viewpoints, redlines, and comments saved to a single file. This file type can be opened with any

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Classification and Standardisation
Jarek Wityk

Sensitive Information

ELI5-S1 BIM Basics E16_Sensitive Information information, the loss, misuse or modification of which, or unauthorized access to, could:(a) adversely affect the privacy, welfare or safety of an individual or individuals;(b)

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Unified Modelling Language (UML)

language to provide system (3.13) architects, software engineers, and software developers with toolsfor analysis, design, and implementation of software-based systems as well as for modelling businessand similar processesNote 1 to

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plan of work

It is a project-specific “digitally checkable” framework set-up to ensure that the deliverables of all contributors are identified and appropriate to the decisions required at each work stage. The plan

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Last Planner®

The person or group that makes assignments to direct workers. Project Architect and ‘discipline lead’ are common names for last planners in design processes. ‘Superintendent’ or ‘foremen’ are common names

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