The Ultimate BIM Knowledge Hub
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Data Management
ELI5
NWC
NWC is a cache file. “When you open a CAD file in Navisworks, by default, a corresponding cache file (NWC) is created, which contains all of the conversion details required
2022-07-11
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Integrated Project Delivery
Integrated Project Delivery (IPD) is a collaboration of all parties, systems and practices to optimize and maximize project success. Defined by the American Institute of Architects, IPD is typically applied
2022-07-11
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Dictionary
Selectivity
Resolving Selectivity Issues in Electrical Design Free Trimble ProDesign Introduction Training Course Click the button below for more details: ProDesign Course Selectivity is achieved where,under overcurrent conditions, the protective device
2023-02-05
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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
2023-02-05
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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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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
2022-07-11
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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.
2022-07-11
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As-Built Model
Model(s) based on Fabrication Shop Model(s) and installed conditions.1 1 1 The Massachusetts Port Authority, 2015. BIM Guidelines for Vertical and Horizontal Construction.
2022-07-11
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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).
2022-07-11
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Adiabatic
Adiabatic checks are required to determine whether conductorsmight be damaged by the thermal effects resulting from the level of calculated fault conditions.
2023-02-05
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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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Risk Register
means a risk register containing the risks associated with the timely delivery of information as may be identified in the Information Particulars and/or provided in accordance with the Information Standard.
2022-07-11
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component
named and individually scheduled physical item and feature that might require management, such as inspection, maintenance, servicing or replacement, during the in-use phaseNote 1 to entry: Components can serve as
2022-07-24
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Dictionary
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.
2023-02-25
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delta exchange
exchange of only changed information between two synonymous sources PAS 14191:2020
2022-07-24
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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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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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How To
UK Earthing & Bonding Design Reference
UK Earthing & Bonding Design Reference (Edition 2025 – aligned with BS 7671:2018+A2:2022, Amendment 3 (2024), and draft Amendment 4 (2026), also drawing from official UK Power Networks standards) Scope,
2025-07-11
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Intermediate Event (Message/Throwing)
A message intermediate event can be used to both send and receive messages. The event marker must be filled when used to “throw” the message (see the upper figure on
2022-07-04
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BS EN ISO 19650-5:2020
Organization and digitization of information about buildings and civil engineering works, including building information modelling (BIM) Information management using building information modelling Part 5: Security-minded approach to information management
2022-07-24
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Classification and Standardisation
Organisational maturity
a measure of an organisation’s readiness and capability expressed through its people, workflows, information, technologies and the reliable measurement procedures that are in place [source: Understanding Organizational Maturity
2022-07-15
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Lean Project Delivery System
An organized implementation of Lean Principles and Tools combined to allow a team to operate in unison.[1] [1] The Massachusetts Port Authority, 2015. BIM Guidelines for Vertical and Horizontal Construction.
2022-07-11
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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
2022-07-11
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BS EN ISO 19650-3:2020
Organization and digitization of information about buildings and civil engineering works, including building information modelling (BIM) – Information management using building information modelling Part 3: Operational phase of the assets
2022-07-24
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Employer
Appointing party ISO 19650 term depends on where in the hierarchy the employer is located.The BS EN ISO 19650‑2 appointing party (A) is the equivalent of the PAS 1192‑2:2013 top‑level
2022-07-27
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Max Zs
Themaximum value of earth fault loop impedance (Zs) that will allow the protective device in a circuit to disconnect an earth fault within the prescribed time. Example: if themaximum earth
2023-02-05
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Dictionary
Organisational Purpose
A sense of organisational purpose is an essential part of promoting organisational effectiveness, which motivates individuals to do work and create something or justify the existence of something. Cooperation
2022-07-15
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Harmonic rating factor (Ch)
Ch Rating factor used for calculating theminimum required cable size in the presence of harmonic currents.See BS7671:2018,Appendix 4, section 5.5.
2023-02-05
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Design Build
A contract type used in construction, typical characteristics: There is a single contract for design services and construction services; design and construction of the project may be in sequential phases
2022-07-11
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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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Dictionary
Function
ELI5-S1 BIM Basics E17_BIM Functions Understanding Functions: A Basic Guide In both everyday life and specialised fields like mathematics, computer science, and even construction, the term “function” is widely used.
2022-07-27
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BS EN ISO 21597-1:2020
Information container for linked document delivery — Exchange specification Part 1: Container
2022-07-24
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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
2022-06-29
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EXPRESS specification
formal specification is provided in the EXPRESS language. BS EN ISO 23387:2020
2022-07-24
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Semi-enclosed fuse rating factor (Cf)
The rating factor Cf = 0.725 is applied to cable sizing calculations for any circuit protected by a semi-enclosed fuse to BS3036.
2023-02-05
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How To
CPR Cable Classification Guide
Since July 2017, all power, control and communication cables permanently installed in buildings must comply with the Construction Products Regulation (CPR).
This guide is your reference for navigating Euroclass ratings, selecting compliant products.
2025-06-04
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Basic protection
Protection against electric shock under fault-free conditions;use of barriers,placing out of reach,and so forth.
2023-02-05
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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
2022-07-24
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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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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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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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Intermediate Event (Message/Catching)
A message intermediate event can be used to both send and receive messages. When used to “catch” the message, the event marker must be left empty. If the process was
2022-07-04
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BS EN ISO 29481-1:2017
Building information models – Information delivery manual Part 1: Methodology and format
2022-07-24
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Dictionary
lead appointed party
The term introduced by ISO 19650 typically describes the Tier 1 Main Contractor. For example: : The Lead Appointed Party is a specific entity directly appointed (employed) by the primary
2022-07-03
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Built Environment
All forms of buildings (residential, industrial, commercial, hospitals, schools), all economic infrastructure (above and below ground) and the urban space and landscape between and around buildings and infrastructure3, as well
2022-07-15
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BS ISO 44002:2019
Collaborative business relationship management systems Guidelines on the implementation of ISO 44001
2022-07-15
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Blog
How to respond to request for proposal (RFP)
Introduction It can be said that the digitalization of construction began with designers moving from drawing boards to computers. [1] In Architecture, Engineering, Construction and Operation (ACEO), the focus has
2021-06-27
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purposeful
having a definite objective and strong desire to achieve it In the context of BIM, it describes a people-centric transformation, regarding information as an asset
2022-07-11
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information
reinterpretable representation of data in a formalized manner suitable for communication, interpretation or processing [cited from ISO 19650-1:2018(en), 3.3.1]
2022-07-24
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Enabling Tools
Tools that help design, develop, deliver, and maintain the built asset. You may require a number of different enabling tools for specific tasks and functions. https://www.thenbs.com/knowledge//periodic-table-of-bim
2022-07-24
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