The Ultimate BIM Knowledge Hub

Your one-stop resource for BIM electrical.
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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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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

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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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Commissioning

A building has successfully gone through the commissioning process when its equipment and systems have been examined and tested to perform as designed, and its operators have been trained to

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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.

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How To
Jarek Wityk

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

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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

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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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interaction framework schema

a formal description of the rules with which an interaction framework must comply[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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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

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pre-design process

construction process (3.3.2) determining construction properties (3.5.1) for the built environment (3.1.7) before it is designed[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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Blog
Jarek Wityk

PAS 1192 vs ISO 19650 terms

Quick reference guide In here you can find a quick reference guide with PAS1192 and ISO 19650 terminology comparison. PAS references (superseded) ISO References (current) Pre-contract BEP Pre-appointment BEP Post-contract

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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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Status

Identifier indicating the characteristic of an element of information for which at all times a value can be established. Word status has been included in ISO 19650 Framework meant to

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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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facility

physical structure (asset) or installation, including related site, works, serving one or more main purposeNOTE: Typically, a facility will require management over part or all of its life cycle. The

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geometrical

This is an ISO 19650 term which replaces the PAS1192 term “graphical”. Geometrical is more appropriate to describe spatial positioning and relationships

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Blog
Jarek Wityk

Shared context of information exchange

ELI5-S2: BIM in Practice E1: Shared context of information exchange Introducing the “ELI5-S2 BIM in Practice” Series! Welcome to the first post in our new series, “BIM in Practice,” where

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Infrastructure

the structures that emphasize, organise and enable social functions. Individual units of infrastructure are known as assets. It is sometimes subcategorised into economic infrastructure, the networks of built assets that

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Operations and Maintenance (O&M)

Describes the functions, duties, and labour associated with the operations of an asset, including repairs, replacement of parts and structural components, and other activities needed to maintain an asset.

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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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Work stages

A division of standardised process and activities into named stages during the life of a system or facility. The process and activities extending from the definition of its requirements to

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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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How To
Jarek Wityk

Force Relinquish

Tip of the Day (TOD): How to Relinquish Locked Revit Models If you’ve ever been frustrated by locked Revit model elements when a team member is unavailable to relinquish them,

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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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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

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Level of detail (LOD)

Level of detail (LOD) it is a term introduced by PAS 1192, used in relation with management of the progression and uses of information. Typically referred to geometrical information There

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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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Contract

Appointment ISO 19650 introduce term Appointment to be used instead of the more generic term contract. This means one term can be used for both external contracts and internal work

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Trigger Event

Trigger Events are the occurrences during the life of an asset that causes new or updated information to be required.There are two types of trigger event: Foreseen – planned for

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buildingSMART Data Dictionary

PD 19650‑0:2019 In short, the BuildingSMART Data Dictionary is a library for everything to do with the building. NumberName is an int key and string value that can be stored

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Gateway (Inclusive)

[Or] When a branch splits, one or more branches are activated. Before merging, all active incoming branches must be completed.[1] Symbol 1]     Silver, B. (2009). BPMN Method and Style: A

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Dictionary
Jarek Wityk

BIM Execution Plan (BEP)

The purpose of the BIM Execution Plan (BEP) is to clearly define the actions required of each member of the project team in order to successfully deliver the BIM workflows

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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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Data Association

A data association is used to move data between data objects, properties, and activity and process inputs and outputs. The association connector style can be used to visually represent data

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Global Trade Item Number (GTIN)

Global Trade Item Number (GTIN) identifier for trade items used to look up product information in a database GS1 [1] 1 Online Browsing Platform (OBP) [WWW Document], n.d. URL https://www.iso.org/obp/ui#search

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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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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

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Golden thread

The (digital by default) record of predefined documents and building information required to ensure that the original design intent and any subsequent building changes are captured, preserved, and used to

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capability

a measure of ability to perform and function [cited from ISO 19650-1:2018(en), 3.3.18]

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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

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