The Ultimate BIM Knowledge Hub

Your one-stop resource for BIM electrical.
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Conformance Class

Conformance class allows establishing relations from the information model of BS EN 82045-2 to any other object of relevance available information model. For example, the Project Information Model (PIM) Conformance

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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

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delivery phase

part of the life cycle (3.2.10), during which an asset (3.2.8) is designed, constructed and commissioned [cited from ISO 19650-1:2018(en), 3.2.11] ISO 19650-2:2018 Standard dedicated to the delivery phase

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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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Blog
Jarek Wityk

BS8519 awareness of the changes

An email debate on whether BS 8519’s “dedicated cable support” rules really apply to central battery emergency lighting. We unpack the scope of BS 8519 vs BS 5266-1 and BS 7671, and what that means for segregation, containment and life-safety wiring on real projects.

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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

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Distribution board

An assembly containing protective devices associated with one or more outgoing circuits fed from an incoming circuit. In the ProDesign software,a distribution board (DB) may be single-phase or three-phase,and can

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BS EN ISO 19650-1:2018

Organization and digitization of information about buildings and civil engineering works, including building information modelling (BIM) — Information management using building information modelling Part 1: Concepts and principles

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Diagram comparing coordination failure and selective coordination between protective devices in an electrical system. The top section shows a 32Amp circuit tripping a 63Amp breaker, causing upstream devices rated 125Amp and 160Amp to disconnect unnecessarily. The bottom section demonstrates selective coordination, where a 125Amp device isolates the fault without affecting upstream devices rated 250Amp and 600Amp.
Blog
Jarek Wityk

Breaking capacity

IWE-S1-IWE- E8_Breaking Capacity of MCCB What is Breaking Capacity (kA) Breaking capacity, often referred to as short-circuit breaking capacity, is one of the most critical specifications of a protective device.

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Level of model definition

The PAS1192 term is replaced by ‘Level of information need’ an ISO19650 term Level of information need is a more generic term than any of the existing “Level of …”

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How To
Jarek Wityk

Mimic Panels for Life-Safety Generators

Mimic Panels for Life-Safety Generators – UK-Specific Designer’s Guide Key takeaway: Indicator for generators and smoke-control systems (commonly referred to as ‘mimic panel’, often marked “ESP – Emergency Stand-by Power

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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

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third party

person or body that is recognized as being independent of the parties involved with the issues in question [1] Note 1 to entry: “Parties involved” are usually supplier (“first party”) and purchaser (“second party”). 1

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Tier 1

In the construction industry, Tier 1 is a Contractor referred in ISO 19650 as the Lead appointed party, who provide goods or services directly to the ultimate client. The Tier

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BS EN ISO 23387:2020

Building information modelling (BIM) — Data templates for construction objects used in the life cycle of built assets Concepts and principles

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major change

change that affects the meaning, function or intended useNOTE Definition applies to properties and groups of properties.PAS 14191:2020

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Dictionary
Jarek Wityk

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

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racetrack

Information delivery cycle It is a term introduced first in PAS 1192 and updated in ISO 19650 framework, it depicts the process of specifying and delivery of project and asset

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Periodic Model Quality Control Checks

Apart from the weekly model coordination effort that focuses on spatial coordination and clash resolution, the Appointment BIM Manager should review all disciplines project models and ensure compliance with BEP

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Blog
Jarek Wityk

Quality Management and Standards

Most articles start with a definition of quality management and then dive deep into Quality Control (QC) and Quality Assurance (QA). In here I concentrate on the quality, value and

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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).

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system of insight

A system of insights can helps your company make decisions, and it is designed to be part of business decision-making process. It involves gather data, use it, find relationships and

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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

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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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BIM Use

A Use Case is a description of an intended use of the BIM, along with a description of the type(s) of data that must be in the BIM in order

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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

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Common Data Environment (CDE)
Jarek Wityk

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

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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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Set-Based Design

Set-Based Design commonly referred to as a set-based design innovation or set-based concurrent engineering. It is a product development approach where teams consider a wide range of design alternatives (a

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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.

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Dictionary
Jarek Wityk

Digital twin

ELI5-S1 BIM Basics E19_Digital Twin “The digital twin is the virtual representation of a physical object or system across its life-cycle. It uses real-time data and other sources to enable

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Classification and Standardisation
Jarek Wityk

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,

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BS 8536-1:2015

Briefing for design and construction Part 1: Code of practice for facilities management (Buildings infrastructure)

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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

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Group

Because a group is not an activity or a flow object, it cannot connect to sequence or message flows. Furthermore, groups are not constrained by pool and lane restrictions. [1]

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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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Digital Construction

The terminology such as digital built environment and smart asset management, often referred to as Digital Construction, encompasses multiple technologies and processes related to information or project management and the

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Heating, Ventilation and Air-Conditioning (HVAC)

Heating, Ventilation and Air-Conditioning (HVAC). All necessary heating, ventilation air-conditioning and specialty equipment, including air distribution ducts for supply, return, and ventilation and exhaust ducts, including control system, registers, diffusers,

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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

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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

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consensus

general agreement, characterized by the absence of sustained opposition to substantial issues by any important part of the concerned interests and by a process that involves seeking to take into

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workflow

The term ‘workflow’ is used in ISO 19650 instead of the PAS 1192 term ‘process’.

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supply chain

Term used to describe the relationship between organisation that provide materials, products or services for the client. Referring to ISO 19650 Framework the supply chain is synonymous to a ‘delivery

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Dictionary
Jarek Wityk

coordination

Coordination goes beyond orderly task execution, it transforms individual perspectives into shared, community-wide actions. It’s not just a subset of collaboration; it’s the engine that makes collaboration more than a patchwork of solo efforts.

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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

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