The Ultimate BIM Knowledge Hub

Your one-stop resource for BIM electrical.
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Blog
Jarek Wityk

The Museum of the Future

Introduction The idea to connect 3D CAD models with construction programs (4th Dimension) was formulated in 1986-87 when Bechtel collaborated with Hitachi Ltd to develop the 4D visual model[1] The

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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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Fabrication Model

Digital Model(s) created from shop drawings to support fabrication and installation. Fabrication models are reviewed and approved by the A/E for conformance to design specifications.1 1 The Massachusetts Port Authority,

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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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Current-carrying capacity

Themaximum current which can be carried by a conductor under specified conditions (Installation method, temperature,grouping,etc.)without its steady-state temperature exceeding a specified value (for example,90 ºCfor cables with thermosetting insulation).

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Appointee

    UK BIM Alliance responding to the inconsistency between current  guidance of CIC BIM Protocol, Second Edition 2018 and ISO 19650 Framework published updated Information protocol to support BS EN

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Ecocide

In environmental justice, ecocide is the criminalised activity of substantially harming or destroying ecosystems in their entirety or by harming individual species. At time of writing, 10 countries have criminalised

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Co-Location

Assembling the entire BIM design and construction team in a single location (“Co-location”) enables almost instant and direct communication and coordination among team members. This Co-location of all team members

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Integrated Workplace Management System

Integrated Workplace Management System. Such systems incorporate powerful database capabilities to capture enterprise-level functions and serve as decision support tools at all organizational levels and throughout the whole building lifecycle.

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Dictionary
Jarek Wityk

Emergency Voice Communication System (EVCS)

An Emergency Voice Communication System (EVCS) or (EVC) is a fixed, monitored and maintained, bidirectional, full duplex voice communication system (Refuge system) designed to facilitate the orderly evacuation of disabled

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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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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

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Blog
Jarek Wityk

BIM Classification and Standardization Systems

Introduction There are companies in the construction industry which do not favour standardization; these companies benefit from revenue and profits from change orders (variations), inevitably resulting in claims increasing cost

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ontology

An ontology is a set of rules that make it possible to link data on a semantic level. Means the unstructured, semi-structured data can be read and encoded by computers.

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Industry Foundation Classes (IFC)

conceptual data schema and exchange file format for building information modelling (BIM) data BS EN ISO 23387:2020 In general, IFC, or “Industry Foundation Classes”, is a standardized, digital description of

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Competent person

Aperson who possesses sufficient technical knowledge, relevant practical skills and experience for the nature of the electrical work undertaken and is able at all times to prevent danger and,where appropriate,

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Model View Definition (MVD)

One or more specific information exchange requirements may necessitate the need for a model view definition (MVD). A machine-readable representation of MVDs is required when using them in software development.

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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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Facility Lifecycle

This refers to the time span stretching from a building’s conception to demolition including the five distinctive phases (Planning, Design, Construction, Operations, and Disposition).1 1 The Massachusetts Port Authority, 2015.

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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

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Distributed Ledger Technology

Distributed Ledger Technology (DLT) is an encrypted and distributed database that serves as a register for storing records of transactions. At the core of DLT is a data model that

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carbon sink

A carbon sink is a natural or artificial reservoir that captures and stores morecarbon than it releases. Examples include forests, oceans, soil and potentially timber buildings. We need these reservoirs

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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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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

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open interoperability

the meaning and benefits: single procurement of information that can be relied upon over time, removing the need for it to be repeatedly re-procured; a ‘Golden Thread’ of information to

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Basic protection

Protection against electric shock under fault-free conditions;use of barriers,placing out of reach,and so forth.

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BS 8541-1:2012

Library objects for architecture, engineering and constructionPart 1: Identification and classification – Code of practice Note: ISO 22014 and ISO 22057 are under development tosupersede BS 8541, parts 1-6.

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Diversity

It is often not desirable to size each conductor in a distribution system to support the total connected load at that point in the network.Diversity is applied on the basis

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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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Dictionary
Jarek Wityk

BIM Functions

ELI5-S1 BIM Basics E17_BIM Functions Understanding BIM Functions: A Simple Guide for Beginners Building Information Modeling (BIM) is transforming the construction industry by enabling better collaboration, design precision, and efficient

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Level of information (LOI)

The term used in relation to management of the progression and uses of information. There is general confusion with the use of the term, due to range of other interrelated

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fragmentation request

A fragmentation request corresponds to the deactivation of the property and the creation of several properties. After validation of the fragmentation request by the experts, the fragmented property is deactivated.

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Blog
Jarek Wityk

Emergency Lighting in Toilet Cubicles

Summary
1. If the toilet has borrowed light and is less than 8m square:
a. There is no need for emergency lighting, however,
b. If there is a cubicle with full height door – therefore closed without borrowed lighting – then the EM lighting would be required in that cubicle.
2. If the overall toilet has no borrowed light,
a. And the WC cubicles do not have full-size doors; there should be at least one emergency outside row of cubicles.
b. If there is a cubicle with full height door – therefore closed without borrowed lighting – then the EM lighting would be required in that cubicle.

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collaboration

a deliberate approach to working together on an agreed common purpose within functional, organisational, geographic, or organisational boundaries. Collaboration often depends on a solid knowledge management culture to facilitate the exchange and

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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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Life safety generator installed for emergency power backup in a residential building, ensuring uninterrupted operation of critical systems during outages
How To
Jarek Wityk

Life Safety Generator

Life Safety Generator selection guide Copy If the secondary power supply is provided for firefighter’s lift, it must be capable of operating the firefighter’s lift at its full rated load

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Tier 3

In the construction industry, Tier 3 is a sub-contractor referred in ISO 19650 as the Appointed party and Task Team, with a sub-contract who provides goods or services directly to

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Workset

A workset is a collection of elements in a work shared Revit project. The purpose of worksets is to enable multiple users to work on the same project and facilitate

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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

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Integrated Digital Delivery

History History’s Professor, Yuval Noah Harari, in his book Homo Sapiens reached a conclusion that humans developed an ability to transmit information about things that do not really exist (stories),

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Message Flow

A message flow depicts the exchange of messages between two participants who are ready to send and receive them. A message flow must connect two distinct pools. They are either

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security

state of relative freedom from threat (3.13) or harm caused by deliberate, unwanted, hostile or malicious acts [cited from ISO 19650-5:2020(en), 3.7]

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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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