• No results found

NATSPEC National BIM Guide - IPWEAQ e-resources


Academic year: 2023

Share "NATSPEC National BIM Guide - IPWEAQ e-resources"


Loading.... (view fulltext now)

Full text

You may distribute this document to others provided you acknowledge that it was created by NATSPEC and that the document is freely available at www.natspec.com.au. NATSPEC welcomes comments or suggestions for improvements to the NATSPEC National BIM Guide and encourages readers to notify us immediately of any apparent inaccuracies or ambiguities.

Purpose of the NATSPEC National BIM Guide

Project requirements

NATSPEC National BIM Guide documents

How to use the NATSPEC National BIM Guide

The Project BIM Brief records variations from the National BIM Guide and should be read in conjunction with it and the Project Contract. If and how the BIM object/element matrix will be used on the project, must be recorded in the Project BIM assignment.


The BMP is used to describe in a much more detailed way how the project will be executed, monitored and controlled in relation to BIM in order to meet the requirements recorded in the Project BIM Terms of Reference. As a tool for the project team to decide what information should be included in the model at different stages of the project, and by whom.

Procurement Strategy

After determining the requirements for using BIM on the project and formally before the project. As it includes specific parameters for the Exchange of Building Information (COBie), it can be used during the design, construction and commissioning phases of a project to record information to be handed over for facilities management purposes.

BIM Responsibilities

An important part of the National BIM Manual is the requirement for a BIM management plan (BMP) (also known as a BIM implementation plan). The NATSPEC BIM Object/Element Matrix can be used as an aid in the development of the BMP.

Data Reuse

Terms of Use

Open Standards


In those projects where construction information is available during the design phase (using the D&C or IPD project procurement strategies), the BMP will address both design and construction activities. Where a DBB (traditional) procurement strategy is used, a separate BMP for design and possibly for construction should be developed and presented to the client with specific attention to model and data handover from the design team to the construction team.

Design BMP

The BMP should be considered a living document and should be continuously developed and refined throughout the project development life cycle as required to ensure the project remains on schedule and informed.

Construction BMP

The project procurement strategy (DBB, D&C, IPD) and how Construction BIM will support the project delivery activity. When a DBB procurement strategy is used, the Norwegian Directorate of Construction Materials must process the specific strategy for Design BIM reuse. BIM qualifications, experience and contact details for Construction BIM Managers and Lead Fabrication Modellers for all trades.

Software Compatibility and Data Flow Testing

Strategy for software compatibility, file formats, hosting, transfer and access of data between trades (use of model server, extranet, access security, etc.) A technical evaluation of options to match the technical needs of IT with the size and the complexity of the project, and to ensure access by the Design/Construction Team and various stakeholders, fabricators, etc.

Team Roles and Relationships

Match BIM usage to project, determine usage schedule, share activities, quality control, model and document responsibilities in BMP. Mapping BIM Usage for Structural Design – Determine BIM usage for structural simulations, analysis and documentation. Map BIM usage for sustainability, 3rd party rating systems - determine BIM usage for simulations, analysis and documentation.

Table 4.1 – BIM Roles and responsibilities
Table 4.1 – BIM Roles and responsibilities

Design Team BIM Manager

Technical (Design) or Trade (Construction) Lead BIM Coordinators

Construction BIM Manager

Where 4D BIM is required, ensuring that construction scheduling and planning activities are integrated with construction BIM. Communicating with the design team, coordinating data extraction sets requested by construction tradesmen and ensuring these requests are met. Coordinating with the design team to facilitate documentation of design changes in the field and updating BIM in a timely manner.


Acting as the primary point of contact for BIM and related matters between the construction team, subcontractors, client, design team and others as required. Ensuring that the Construction Team has the necessary hardware and BIM Software properly installed and accessible for project use. Prior to approval and installation, working with Lead Fabrication Modellers to integrate 3D fabrication models with updated design model to ensure compliance with design intent.

Construction Bidding

Where a contractor's BIM coordination room is required by the Project BIM Brief, provide specifications for it to the client for approval. Coordinating with design team and commissioning agent to ensure Facility Management information (eg COBie) is complete where required.

Construction Phase

Clash reports may also be issued by the contractor as background information for RFIs and submittals.


Collaboration Standards

Management of Standards

Project Kickoff BIM Standards Orientation

Facilitating BIM Coordination

Consider the following uses of BIM and record the selected uses in the Project BIM Briefing.

Project Definition, Planning and Pre-design

Modelling existing conditions

Site analysis

Space and equipment validation

Architectural Modelling (Design)

  • Architecture – spatial and material design models
  • Design visualisation for communication and functional analysis
  • Code checking
  • Sustainability evaluation

It should be noted that although BIMs contain most of the source information needed for visualization, they may require further refinement in specific animation and visualization software to achieve the intended results. Consider the following uses of BIM for communication purposes and record the selected ones in the BIM Project Summary. Enhanced visualizations for presentation purposes using photorealistic rendering software and photomontages of the proposed design in the context of the existing road or landscape.

Structural Modelling and Analysis

This allows project stakeholders to see and understand design solutions that represent reality so they can work toward improving the building design before construction begins. At a minimum, the model should be integrated into design reviews, review deliverables, and 3D renderings of construction documentation. Areas that would benefit from the use of 3D imagery and aerials during the design process and during construction will be identified and noted in the MPC(s).

MEP Modelling and Analysis

  • Energy analysis
  • Virtual testing and balancing
  • Lighting analysis
  • Other engineering analysis

Apply the protocols published by the source organization for proper use of the data. Virtual testing and balancing of the architectural model will be used to support the design and analysis of sustainable building systems. One method is to create a Space/Room chart that shows the calculated airflow versus the actual airflow.

Quantity Take-off and Cost Planning

Design teams will use energy modeling and sustainable design software that outputs BIM data in the appropriate file format for the analysis tool. Passive design analysis – model the building to allow the use of specialist applications such as Computational Fluid Dynamics (CFD) software. Room data can be read from the associated architectural model to create mechanical spaces (each space is the same as a room in the architectural model).

Construction Models

  • Clash detection/coordination
  • Construction system design
  • Digital fabrication
  • Planning construction scheduling and sequencing – 4D
  • Communication of construction scheduling and sequencing - 4D
  • Site utilisation planning
  • Lift planning

The bounding boxes used to show the spaces of rooms and zones must match the architectural requirements and data values, all of which must be consistent with the values ​​specified in the Design Program. General model quality check: All walls must be properly joined to prevent "space leakage" in the areas defined by the surrounding walls. For a design that includes a redevelopment swing space sequence or a master design for a long-term building, BIM 4D is used to illustrate the plan for step-by-step interaction, communication and approval of the final design and spatial sequence with the building occupants. .

Facilities Management/As-built Models


Crane girder and load clearances between other cranes, building elements, obstructions and hazards (power lines, etc.).

Other FM information handover/commissioning systems

Security assessment and disaster planning


Subcontractor Coordination

Approved BIM Software for Projects

Modeling software certified to work with the latest version of the Industry Foundation Class (IFC) file format available at the start of the project. The BIM-based energy analysis software used must support IFC import or be a native BIM model format that is IFC compliant. Energy analysis software selection is based on US Department of Energy (DOE) recommendations and ANSI/ASHRAE 140-2007 (or latest version) and conforms to the Australian Building Code Board (ABCB) protocol for energy analysis software of buildings.


Preference is given to object-oriented software applications that adhere to applicable industry interoperability standards and are capable of being used in a collaborative environment. Model authoring software certified as being able to export native files to IFC file format without loss of geometric integrity. Traditional 2D documentation prepared with approved IFC-compliant BIM authoring software and plans, elevations, sections, schedules and details must be derived and fully coordinated with the coordinated building model.

Types of Model Elements

Model Geographical Location

Once the design coordinate system has been agreed upon, any existing building model(s) relevant to the project will be converted to the coordinate system used for each designed building. The BIM file point and latitude/longitude points will be placed at an agreed point on the site that is easily accessible during construction and will not be moved. The MGA Reference will always "read" as 0,0,0 - the project base point will read whatever is the distance from the MGA Reference to the lowest left point of the building's structural grid.

Points of Reference

A geo-reference to accurately locate the building within the site and give it a larger-scale physical context of the site should be included in the BIM file. The BIM Manager will geo-reference site plans and construction models for site plan surveying and future use of Geographic Information System (GIS) in accordance with Mapping Network Australia (MGA) and Australian Elevation Datum (AHD).

Requirements for Modelling Space

Meta Data

Space Naming and Coding

Room Number – Construction Document Number (where applicable. Used on large complex projects for use by contractors).

Equipment Coding

Additional Modelling Standards

Final BIM Deliverables

The Contractor shall be responsible for providing the Client with consolidated as-built Model(s) for all building systems. Design Team - Format(s) of the original Design Model file (version as agreed in the BIM Management Plan). Design Team – Produce a printed set of final documents created from the Design Intent Model.

Project Folder Structure

At the agreed times recorded in the project program, the BIM files are added to the client and cleaned of extraneous layers of "residues" or "workspace", stories, abandoned plans, places of creation and testing of objects, empty layers and others. content that is typically produced in BIM production. The design team must ensure that the design model remains up-to-date with all approved bulletins for the entire scope. Reconciliation Files – Construction Reconciliation (conflict detection) files are managed by BIM Manager and organized by date as the project progresses.

Data Security


CAD/Drawing Standards

Bulletin A brief update, report, or advisory note on an issue that is distributed to project team members. Conceptual Design The phase of the design process in which the overall scope and nature of the project is determined based on location, design considerations, and the client's brief, budget, and program. They can only be used by design or construction teams as a planning tool or as part of the final deliverables for the client.

Floor Area

Measurement Procedures


Table 4.1 – BIM Roles and responsibilities
Figure 7.4.2 Calculated vs actual airflow comparison


Related documents

No candidate may receive credit for any subject for the purposes of the degree of bachelor of Arts unless he has at least six months before presenting himself for such subject passed or