Bentley Building Mechanical Systems V8i

Bentley® Building Mechanical Systems V8i  

A Comprehensive BIM Solution for the Design and Documentation of Heating, Ventilation, Air-Conditioning, and Plumbing Systems


Bentley Building Mechanical Systems V8i is a focused application for mechanical engineers, designers, CAD technicians, and BIM practitioners responsible for the design, construction, operations, and maintenance of facility mechanical systems.

Intuitive and Customizable Interface

Bentley Building Mechanical Systems V8i is an advanced, yet intuitive and easy-to-use Building Information Modeling (BIM)application. It empowers mechanical engineers to create air-handling and plumbing systems for buildings and industrial plants with unlimited freedom to, explore more design options, make better-informed design decisions, predict costs and performance.

With an intuitive and customizable user interface, extensive component libraries, and powerful modeling, drafting, and reporting tools, Bentley Building Mechanical Systems V8i supports all phases of the engineering workflow, from the design and modeling of air-handling and plumbing systems to analysis and construction documentation. Integrating design, visualization, drawing production, and reporting of quantities and costs, Bentley Building Mechanical Systems V8i is part of Bentley’s BIM solution of integrated design, engineering, and management applications for the entire lifecycle of constructed assets.


Used on large and complex projects around the world, Bentley Building Mechanical Systems V8i was specifically developed to support workgroups and distributed teams in a managed environment, allowing architects, engineers, and contractors to build as one. BIM enables business-critical benefits over traditional computer-aided drafting (CAD), eliminates waste, significantly reduces errors and omissions, provides greater predictability of costs and performance, allows exploration of more design options, and ultimately results in better buildings.



Design and Modeling of Air-Handling and Plumbing Systems

Components such as rectangular, round, oval or flexible ducts; pipes; connectors; in-line devices; valves; pumps; grilles and diffusers; dampers; filters; and silencers are fully parametric, which allows dimension-driven creation and modification. A variety of country-specific standards are supported, and metric and imperial components can also be chosen from selected manufacturers’ catalogs. Manufacturers’ content can be globally applied to existing generically placed systems. Rapid design and production is facilitated through automatic placement of transitions and connectors, automatic hookup to pipes or ducts, and automatic sloping of complete piping systems. Automated, rule-based, creation of insulation can be applied to complete systems.

Choice of 2D, 3D, or both

The building information model can be created and manipulated in a traditional 2D plan, an advanced 3D model environment , or both – using the same tools and interface for either. Plans, sections, and elevations comply with user-definable drawing standards and rules for re-symbolization and annotation. Options are provided for single-line duct or pipe representation, removal or display of hidden lines, and extensive labeling and annotation of ducts, pipes, and fittings. Coordination and consistency is thereby ensured across all documentation.

User-definable attributes and properties associated with mechanical and plumbing components can be used to query the information model, to make selective or global changes to the geometry and non-graphical information, and to generate accurate component schedules and material takeoffs.

Integration with Analysis and Fabrication

Energy analysis can be carried out through gbXML import/ export functionality to various energy analysis packages. Design alternatives can be investigated at an early conceptual design phase and throughout the project to increase communication within the design team to optimize the energy performance of the building.

A Managed Environment

Bentley Building Mechanical Systems V8i can be integrated with ProjectWise® V8i, Bentley’s project team collaboration server that manages access to project information across a LAN, WAN, VPN, or via the Internet, and publishes and synchronizes shared information, manages change, protects intellectual property rights, and more.


Bentley Building Mechanical Systems V8i At-A-Glance

Building Information Modeling (BIM)

• Design and construction documentation of air-handling and piping/ plumbing systems

• Choice to work in 2D plans, 3D models, or both with a single set of tools

• Offers automatic connector placement, pipe and component hookup, and sloping of complete systems

• Provides attributes and properties significant for design, analysis, construction, and operations

Parametric component design

• Offers parametric, dimension-driven creation and modification of components

• Access to component product manufacturers, such as Lindab

• Creation of custom components with VBA scripts and XML

Coordinated constructiondocumentation

• Rule-based creation of plans, sections, and elevations. Automatic re-symbolization of 3D components to 2D representations

• User-definable annotation and labeling

• Material takeoffs, component schedules, and other reports

• Compatibility with office automation tools for further processing and formatting

International and customstandards support

• Create, manage, verify, and enforce company and project standards

• Support for U.S. and other country-specific component libraries

• Support of DGN, DWG, gbXML,DXF, PDF, STEP, IGES, IFC, and other major industry standards

Interoperability withbuilding design, engineering,and analysis

• Fully integrated with Bentley Architecture V8i, Structural Modeler V8i, Bentley Building Electrical Systems V8i, and more

• Wall attribute checking to determine fire damper requirements

• Review and manage interferences across multiple files and disciplines, in conjunction with ProjectWise Clash Resolution Visa

• Simulated construction schedules in conjunction with Navigator V8i and project management applications, such as Microsoft Project or Primavera P3

• A shared multidisciplinary model for team collaborationand coordination

• Export to CAM-Duct (M.A.P.) for automated fabrication

• Exchange data with Energy Analysis programs such as Bentley TAS V8i, Bentley Hevacomp, ECOTECT, Trace 700, Carrier HAP, Green Building Studio, and more

• Facilitated by Bentley’s newly introduced i-model (a container for open infrastructure information exchange), Bentley Building Mechanical Systems V8i,maximizes the interoperability of information between different specialized applications, CAD and BIM platforms, and design reviews of a project’s mechanical information.

Integration with managed environment

• Fully supported in ProjectWise V8i, Bentley’s comprehensive project team collaboration server



Technical Requirements


MicroStation v8.11 (MicroStation TriForma extension)


Intel Pentium-based or AMD Athlon-based PC or workstation

Operating System

Microsoft Windows Vista (32 & 64-bit), XP (SP2 or later), Windows XP Professional(64-bit)


512 MB RAM

Disk Space

900 MB minimum free disk space

Input Device

Mouse or digitizing tablet (tablet on Windows requires WINTAB driver or Bentley's Windows Digitizer Tablet Interface Interface


  • English
  • German


BIM for Design and Documentation of Air-handling and Plumbing Systems


Model building information

Bentley is committed to delivering complete BIM solutions that support the whole project delivery process for the entire lifecycle of facilities. Built on a single platform while supporting industry standards, these solutions focus on design rather than drafting, integrate design with engineering, facilitate multi-disciplinary collaboration, and allow distributed teams to build as one within a managed information environment.

Designed by engineers for engineers, Bentley Building Mechanical Systems is an advanced Building Information Modeling (BIM) application that virtually creates true 3D prototypes of mechanical systems, thereby providing significant business-critical benefits for mechanical engineering and EA/AE firms, consultants, and contractors of all sizes. Allowing them to deliver better engineered buildings on time and on budget, they substantially improve client services, reduce costs, and increase revenue.


  • better overview and interact with the 2D output from the first phase of the project
  • achieve greater design quality on time and on budget
  • avoid cost overruns, delays, and claims
  • improve client services
  • gain a competitive advantage
  • increase revenue

Compress design development time

To facilitate the rapid design and modeling of complex air handling and plumbing systems, Bentley Building Mechanical Systems supports the widest variety of components, materials, and cross section with a comprehensive range of dedicated tools. Components, such as rectangular, round, oval or flexible ducts, pipes, connectors, in-line devices, valves, grills and diffusers, dampers, filters, and silencers, are created and modified parametrically; dimension-driven. In addition, various country-specific standards as well as selected metric and imperial manufacturers’ catalogs are supported.

Rapid design is further facilitated through automatic insertion of transitions, elbows, Tee and Wye connectors, as well as automatic diffuser hook-up to ducts. Modification and re-sizing tools allow the user to edit and update the system with re-healing done automatically or through key-in. In addition, custom components, ducts, and fittings can be created with VBA (Visual Basic for Applications) to meet fabrication standards or Bentley’s own parametric components can be modified and extended by the user through VBA. Finally, with a single click, Bentley Building Mechanical Systems automates the sloping of entire piping systems - one of the most tedious, time-consuming, and error-prone tasks.


  • rapidly design and model the most complex systems
  • gain more time to evaluate more design options
  • achieve significant time savings in the design development phase

Get immediate visual feedback

Bentley Building Mechanical Systems provides immediate visual feedback and streamlines the creation of convincing presentations without the need to export data to an external visualization application, because powerful design visualization tools, which include ray and particle tracing, radiosity, animation, lighting, and camera controls, and more, are seamlessly integrated.

In addition, Bentley Building Mechanical Systems not only supports Adobe PDF, the standard for electronic deliverables in AEC, including embedded 3D models, but also connects to the Google Earth service. 2D and 3D models in DGN and DWG can be published directly to the Google Earth environment, so you can zoom from space onto a site, view the facility in the context of rich geography imagery, fly around the building, and then view associated content, like floor plans, sections, elevations, details, schedules, rendered images, web pages, etc. via embedded links.


  • forget the need to export models to external visualization application
  • get immediate visual feedback
  • streamline the creation of convincing client presentations
  • better communicate the design intent and project information to stakeholders

Integrate design, analysis, documentation, and fabrication

For performance-based duct sizing, Bentley Building Mechanical Systems includes a Bentley duct sizer and the Trane® Ductulator. Entire duct and plumbing systems can be analyzed and checked for integrity, connectivity, and flow paths. Gaps in the system, open air duct endings, and grilles and diffusers without defined air rates can quickly and easily be found and fixed. Air rates of all components within a system are collected and the difference between supply and return air rates at the AHU is calculated. This tight integration of design and analysis allows mechanical engineers and consultants to adjust and optimize entire air handling systems.

Component catalogs from manufacturers, such as Nibco, Victaulic, and Lindab, are delivered with Bentley Building Mechanical Systems. Therefore, all part and performance data come directly from manufacturers, ensuring accurate analysis.

Export to fabrication: Single, selected, or all generic (non-catalog) components can also be exported to CAM-DUCT (i.e., component information from the model can be used directly to drive plasma cutters without the need for drawings), thus increasing the value of the building information model even further.


  • use only components that can be purchased or fabricated to industry standards
  • seamlessly integrate design with analysis
  • make better informed engineering decisions with accurate analysis data
  • avoid re-entering of data and eliminate errors associated with manual data input
  • export component information to CAM-DUCT for rapid fabrication

Reduce construction documentation time

From a consistent building information model, plans, sections, elevations, and shop drawings are generated automatically, which comply with accepted drawing standards and conventions. Full control is given over the cut plane(s) and forward and reflected view representation, as well as levels, symbology, and material representation. User-definable drawing rules produce a variety of shop drawing representations: showing single line or outline duct and pipe representation, duct insulation, hidden lines, labeling and annotation, and changes since the last extraction can be highlighted


  • create accurate and coordinated 2D drawings from 3D models
  • control every aspect of representation
  • achieve significant time savings in the construction drawings phase

Predict performance, quantities, and costs

User-definable properties associated with mechanical and plumbing components are used to query the building information model, to make selective or global changes to the geometry and non-graphical information. Accurate bills of materials and cost reports, and schedules can be generated in Microsoft® Excel that include lengths, dimensions, and materials of ducts, pipes, and components, flow rates, and more. Modeling can be done with manufacturers’ catalogs allowing the production of lists of off the shelf parts that can be ordered and priced through local vendors.


  • query any aspect of the building information model
  • make geometry changes through associated attributes
  • generate accurate schedule and reports
  • order and price ‘off the shelf’ parts through local vendors

Avoid errors and omissions

Bentley Building Mechanical Systems automatically coordinates mechanical design and construction documentation through all project phases and manages inherent component attributes and properties significant for design, documentation, analysis, construction, and operations. Because all information is tightly linked, changes made to models are reflected in shop drawings, schedules, and reports. Mechanical and plumbing components can be pre-defined and stored with settings for material, level, 2D and 3D symbology, etc., thus enforcing corporate and project standards as well as capturing knowledge for reuse on subsequent projects.


  • assure consistency across all forms of project documentation
  • enforce compliance with corporate and project standards
  • capture knowledge for reuse on subsequent projects

Empower your organization

Unlike applications that impose a particular way of working, Bentley Building Mechanical Systems provides complete workflow flexibility. Using the same tools and an identical interface, you can work in a traditional 2D plan or advanced 3D model environment, associate attributes and properties with mechanical components and objects at the time of placement or add them as the project progresses. In any case, changes made in either environment may be tracked and synchronized.

Available in major languages, Bentley Building Mechanical Systems is delivered with localized content supporting a variety of country-specific CAD standards. Customizable with corporate and project standards, datasets include common mechanical and plumbing components with default settings for symbology, level, material, and more. So, Bentley Building Mechanical Systems can be used right out of the box.

The user interface of Bentley Building Mechanical Systems is easy to use, intuitive, and self-explanatory, making 3D modeling as simple as 2D drafting, thus shortening the learning curve and allowing full exploitation of the many powerful tools and features.

The Bentley Institute develops and delivers accredited professional training to help busy infrastructure professionals enhance their skills, increase productivity, and stay competitive. With unlimited access to all distance learning and OnDemand eLearning courses, the Bentley LEARN training subscription maximizes an organization’s return on investment in professional development by providing effective learning opportunities to all users while reducing costs and streamlining budgeting. The end result is a highly effective, well-trained workforce that increases revenues and profitability through service offerings that meet market needs and improved project delivery that’s on time and within budget.


  • define how you want to work, so it best suits your projects and workflows, not the application
  • use Bentley Building Mechanical Systems right out of the box with localized content
  • shorten the learning curve
  • empower mechanical engineers and consultants
  • streamline budgeting for training
  • achieve significant savings in training costs and greater return on software investment


Bentley Building Mechanical Systems is fully integrated with other applications, such as Bentley Architecture, Structural Modeler, Bentley Building Electrical Systems, Bentley Facilities, and Bentley Navigator, providing a truly multi-disciplinary collaboration environment within a shared model. For instance, Interference Manager ensures that coordination during the design phase translates into seamless fabrication and installation, thus saving tremendous amounts of time and expense. For interoperability with CAD-based applications, all major industry standards, such as DGN, DWG, DXF, STEP, and IGES, are supported. In addition, Bentley Building Mechanical Systems includes full support for the IFC 2x3 coordination view, the emerging standard for information exchange between object-based BIM applications in the building industry.


  • better collaborate and integrate
  • collaborate seamlessly across disciplinary borders in shared multi-disciplinary models
  • interoperate across different file formats
  • save time and costs for fabrication and installation through clash-free design
  • facilitate rapid prototyping
  • ‘build as one'

Manage change securely

Bentley Building Mechanical Systems tightly integrates with Bentley ProjectWise, a collaboration server that manages access to project information across a LAN, WAN, VPN, or through the Internet, and publishes and synchronizes shared information, manages change, protects intellectual property rights, and more.


  • share and synchronize project information securely with project partners
  • manage change effectively
  • protect your intellectual property