Revit MEP

Revit MEP

Thursday, June 28, 2007

Autodesk Revit MEP: BIM for MEP Engineering

Revit MEP is the purpose-built building information modeling (BIM) software for mechanical, electrical, and plumbing (MEP) engineering. This white paper explores how key
concepts of BIM improve MEP design processes, both building mechanical and electrical, and how those processes are further enhanced when combined with Revit-based architectural and/or structural workflows.

Using BIM to Improve MEP Design
Today's demanding business environment is driving a push towards more efficiency and integration in building industry supply chains. Owners are demanding better built buildings for less money in less time. Architects, engineers and contractors are under pressure to streamline their building design and delivery process - searching for ways to improve productivity, lower costs, and deliver better-quality products.

The success of BIM for building design - as evidenced by the rapid adoption of BIM solutions like Autodesk® Revit® Building software - is redefining clients' expectations of their MEP consultants. Like BIM for building and structural design, BIM for MEP is a design methodology characterized by the creation and use of coordinated, consistent computable information about a building's MEP design - information used for design decision-making, production of accurate documentation, predicting performance, costestimating and construction planning, and, eventually, for managing and operating the facility.

Several key concepts of Revit Systems are fundamental to understanding how BIM impacts the MEP design process: the use of a computable building model, holistic design, and parametric change management.

Computable Building Model
Revit Systems features a computable building model – that is, a model in software that can be operated on by a computer as a building Using a conventional CAD system for design, MEP engineers and designers visualize the 3D design in their brain and transfer it to a 2D drafted representation. Some CAD systems fashioned specifically for MEP design allow the user to model the system geometry in 3D for the purposes of coordination and extracting drawings - making the model seem more intelligent than it really is. But because the model isn't computable, the elements and systems don't know how to interact with each other.

Whereas the Revit Systems building information model captures the functional relationships between building elements and systems. Walls, beams, ducts, pipes, distribution panels; they all "know" what they are, what they do and how to react to the rest of the building.

Holistic MEP Design
This computable Revit Systems building model enables a "holistic" design approach, i.e. MEP design done in the context of the whole building. For example, since the electrical and mechanical systems "know" about each other - an electrical engineer can track the power requirements of the mechanical equipment included in the design and have the software automatically configure electrical load requirements to dynamically change in mechanical equipment specifications.

This holistic approach unites not only the MEP disciplines, but the process as well - featuring an integrated digital environment for design, documentation and analysis. When used in conjunction with other team members using Revit-based design applications, this holistic approach expands to include the rest of the building as well.

Parametric Change Management
The majority of MEP engineering solutions today are based on CAD technology with a focus on the production of construction documentation rather than the engineering design itself. The drawings are either created directly, or extracted from a model. As the design evolves, a high level of effort is required to manage and coordinate the documentation and actionable building design data (such as schedule, cost, building performance, and so forth) of these CAD systems.

In contrast, Revit Systems is built upon a parametric change engine that provides immediate, comprehensive change propagation through the natural operation of the software. This results in the reliable, coordinated, and consistent design information and documentation that characterizes BIM.

Figure 1
Autodesk Revit Systems expands the scope of the Revit family of products, delivering a BIM platform for collaborative multidisciplinary building design. Image courtesy of Dal Pos Architects – Robson Woese Consulting Engineers.

MEP Design with Revit Systems

Design and Feedback
Revit Systems offers a unified environment for MEP design and engineering, analysis, and documentation. MEP engineers work directly in the model, and the drawings themselves are part of the building information model. Intuitive layout tools make system layout fast and easy. Engineers modify their design by dragging design elements to move or change them on the screen. The parametric change engine enables all model views and drawing sheets to update automatically whenever a change is made anywhere for accurate and coordinated designs and documents at all times.

Revit Systems features automatic sizing and systems layout tools, and provides engineers with immediate feedback on their design. For example, during the layout of a mechanical system, Revit Systems displays the critical flow of a mechanical system, allowing an engineer to modify the design for maximum performance and efficiency.

Figure 2
Revit Systems provides engineers with immediate feedback on their designs, such as displaying the critical flow path of a mechanical system (shown in the bottom view opposite).

Avoiding Interferences
Automatic interference checking during the design process is another valuable feature of Revit Systems. Typically, a building's architectural and structural systems are defined well in advance of its MEP systems, with only standard "rule of thumb" space allowances reserved for the latter. This sets the stage for inevitable conflicts between the area needed for those MEP systems and the overall cost of the building. In large building designs - such as hotels, high-rise apartment buildings, or intricate office complexes - squeezing the required MEP systems above the ceiling becomes particularly challenging.

The 3D modeling environment of Revit Systems helps the MEP designer overcome the challenges of fitting the required components into tight spaces, and then provides interference checking to detect collisions during the design process - reducing the risk of construction cost overruns.

Figure 3
Revit Systems provides interference checking to detect collisions during the design process.

Green Design
Revit Systems also supports key aspects of sustainable design by facilitating complex processes and analyses. For example, Revit supports export to gbXML for use in third party energy and heat load analysis applications. MEP engineers can use the information created in their computable Revit Systems building information model to test the
performance of their design, eliminating the time-consuming task of transferring data manually.

BIM for Mechanical Design

Data-Centric Design
The data-rich, computable Revit Systems model is used to drive the MEP design process, with a host of tools to aid in the layout of mechanical ductwork and piping, and plumbing systems.

For example, Revit Systems enables users to perform many engineering calculations directly in the model; calculations like sizing mains, branches, or whole systems at a time, using industry-standard methods and specifications (such as the ASHRAE fitting loss database). System sizing tools are integrated with the layout tools and instantly update the size and design parameters of duct and pipe elements - without file exchanges or thirdparty applications.

Figure 4
Revit Systems enables duct sizing directly in the model during layout.

Revit Systems automatically provides duct and pipe routing solutions between any two points. The routing path is constrained by the engineer, who selects fitting or connection preferences to meet specific design criteria. The software then finds and displays multiple routing paths - allowing the engineer to choose the option that works best for a design.
During the layout of the plumbing design, a user just defines the rise over run and the software automatically calculates invert elevations according to industry codes and tags them at the ends of pipe runs - minimizing the guesswork and manual calculation on sloped pipe. The software also automatically places all plumbing risers and drops - reducing the tedious aspects of system modeling.

Figure 5
Revit Systems automatically provides
routing solutions based on predefined duct preferences. To view routing solutions, the user selects any duct system component to identify the system and the software displays a series of temporary duct routing graphics (shown here in red).

Figure 6
The user then views the various solutions for routing the ductwork, using arrow buttons to scroll back and forth through the solutions, and clicks Finish to select a specific solution.

Design Insight
The computable Revit Systems building information model is also used to give the MEP engineer feedback as the design progresses.

Ducting or piping can be color-coded by a design parameter (such as low or high pressure, fluid service, velocity range, flow rate, etc). This "live" visual representation of design data gives engineers instant insight into the design intent for a particular system.

The System Inspector displays the critical flow path for a duct run and provides a quick method for viewing the design specifications for each duct segment in a system. This feedback allows an engineer to quickly identify areas of the system with the highest pressure loss and then modify the design to optimize system performance.

Figure 7
The System Inspector provides immediate design feedback.

As described earlier, Revit Systems detects clashes between any MEP system components (and when used in a Revit-based workflow, between architectural and structural elements from Revit Building and Revit Structure as well). Detection of interferences during the design process reduces costly field rework.

The computable model created by Revit Systems contains the necessary level of detail to enable direct engineering analysis. To facilitate that analysis, Revit Systems supports export via gbXML to industry leading gbXML third-party analysis applications, eliminating the manual transfer of data back and forth between modeling and analysis packages.

Increased Coordination
A major source of the mistakes and delays in building construction can be attributed to poorly coordinated design documents. In the Fifth Annual FMI/CMAA Survey of Owners - a 2004 survey conducted by FMI Corporation and the Construction Management Association of America (CMAA) - 70% of owners said they are seeing a decline in the quality of design documentation. For firms with slim profit margins, any rework costs exacerbate the bottom line - and MEP profit margins are notoriously slim (from 5% to 15% depending on the type of project).

A purpose-built BIM solution like Revit Systems automatically coordinates all design documentation - because views, drawings, schedules, reports and so forth are all "live" views of the same underlying database. The result is a dramatic reduction in documentation errors, producing an accurate design that requires less rework.

Revit Systems also allow the design and documentation of MEP systems to be done concurrently instead of serially, because project deliverables are created dynamically while the design work is being done. The production of design documentation requires less time and effort by the design team, increasing project throughput. In addition, a concurrent design and documentation effort tends to naturally increase project coordination, with team members working in real time on the execution of the design - minimizing the amount of information loss between participants.
Enhanced Communication
Revit Systems includes a variety of features that enhance project communication between team members, architects, clients, and contractors - including Revit Worksharing (described later in this paper), import/export features, and visual communication techniques.

During the design process, color-filled room plans can be used to visually communicate design intent. Rooms can be color-coded based on critical design parameters such as room types or airflow requirements. These color-filled plans are just another live view of the building information model and they update automatically whenever design changes are made.

Figure 8
Color fill plans in Revit Systems are a visual representation of design intent.

Revit Systems can export to, import from, or link with a variety of CAD formats - including DWG™, DWF™, DXF™, and DGN. This assures compatible data exchange with software applications - as well as clients, architects and partners. For example, 3D DWG files output from Revit Systems can be used in Autodesk® VIZ or Autodesk® 3ds Max® software to create photorealistic renderings of a building’s MEP engineering designs for enhanced communication with clients or team members. Similarly, DWF files output from Revit Systems can be used in Autodesk® Design Review software to facilitate the review process.

Figure 9
Revit Systems can quickly generate realistic rendered views of a building model.

Revit Systems can also read and write ACIS® solids, which gives users a way to import and export Revit Systems models to and from AutoCAD® or Autodesk® Architectural Desktop. This method can be used to cut sections and perform visual interference detection.

Finally, users can easily upload files from Revit Systems to an Autodesk® Buzzsaw® site for web-based collaborative project management. Added functionality even allows for automatic conversion of Revit Systems files to either DWG or DWF format.

BIM for Electrical Design
As explained earlier in this paper, a computable building model captures the functional relationships between building elements and systems. Architectural, structural and MEP elements all "know" what they are, how to interact with each other, and their role within a larger system. A computable building model is of particular importance for electrical design.

For the building mechanical design discipline, defining and understanding the physical relationships of building elements (i.e., the location, size and relationship between building components in 3D space) is as important as being able to model and get feedback on how the system functions (i.e., how much air flow should/can be delivered to a space and the pressure required to move that air through the ducts).

For the building electric design discipline, physical modeling takes a back seat to system modeling. Wires aren't actually routed in the model - that's left to the contractor on site. The only things physically modeled are electrical devices and equipment such as lighting fixtures, transformers, generators, panel boxes, etc., whereas system modeling is of the upmost importance. Are there any devices not assigned to a circuit? What is the number and types of circuits? Is there adequate power and light for the space to be used as intended?

These design considerations and calculations form the basis of the electrical engineer's challenge. The computable Revit Systems model is a perfect environment for this type of data-centric system modeling.

Figure 10
Revit Systems enables electrical system modeling within the context of the entire building model

System Modeling
With Revit Systems, electrical engineers model the power and lighting circuitry of the building spaces. During system modeling, the user places light fixtures, power devices and equipment in the model, then creates a circuit connected to a distribution panel. The user defines wire types, voltage ranges, distribution systems, and demand factors to ensure the compatibility of electrical connections in the design and prevent overloads and mismatched voltages.

The resultant circuit model allows users to calculate the estimated demand loads on feeders and panels, and then use these loads to adequately size equipment in the design environment. Load balancing is made easy when managing circuits; with the click of a button users can balance electrical loads between the buses on their panels. Built-in circuiting tools also allow users to total loads and generate reports for accurate documentation.

Figure 11
Revit Systems allows electrical engineers to model the power and lighting circuitry of the building spaces.

A System Browser lets a user check the continuity of an electrical model to identify orphaned elements that are not connected to any system, making sure that system elements are properly connected and contribute to system load requirements for optimized circuitry. Once the circuits are defined, Revit Systems automatically "wires" the electrical devices by placing annotation that includes the homerun to the panel assigned to the circuit.

Built-in electrical calculations enhance the system design with engineering data, providing design decision support from the building model and reducing the burden of manual calculations. For example, Revit Systems can automatically estimate lighting levels in rooms based on the lights placed in the space, excluding daylight. The user just defines the reflectivity values of the room surfaces, attaches industry-standard IES data files to lighting, defines the calculation workplane height and the system automatically calculates the average estimated illumination value for the room.

Figure 12
Revit Systems automatically places wire directly in the model as annotation during layout.

Figure 13
Revit Systems automatically calculates the average estimated illumination value for a room based on predefined electrical parameters. The calculated illumination values can be scheduled in a report for design documentation.

Increased Coordination
Coordination between a building's electrical and mechanical systems is critical, as one powers the other. The data-centric approach of Revit Systems provides engineers a holistic view of the building model and systems. For examples, a user can review the electrical requirements on mechanical equipment, and configure voltage and power load requirements to dynamically update in panel schedules.

In addition to building model and system coordination, a purpose-built BIM solution like Revit Systems automatically coordinates all design documentation as well. Like all Revit platform solutions, drawings, sheets, views, schedules, reports and so forth are all "live" views of the same underlying database. Therefore electrical documentation such as electrical plans and panel schedules are always consistent.

Figure 14
Revit Systems automatically creates panel schedules, such as the one shown opposite, and automatically coordinates all design documentation such as this.
Enhanced Communication
As described earlier in the building mechanical design section, Revit Systems includes a variety of features that enhance project communication: distributed building information modeling via Revit Worksharing, import/export features, visual communication techniques, etc. This is equally important for electrical designers and all the same Revit Systems features apply. For example, electrical designers can export their Revit Systems model to Autodesk VIZ to produce photorealistic lighting renderings or upload their files to an Autodesk Buzzsaw site or export their design to a CAD format to share with a client.

Figure 15
Electrical designers can use building information modeling to study lighting levels and design directly in Revit Systems, or export to Autodesk VIZ for realistic lighting visualizations such as the image shown here.

Inside a Revit-based Design Team Workflow
Since Revit Systems is built on the Revit platform, coordination between MEP team members using Revit Systems, architects using Revit Building, and structural engineers using Revit Structure is streamlined.

The architectural spaces created using Revit Building can be used by Revit Systems to support load calculations, track airflow in rooms and coordinate panel schedules. The architectural and structural elements created by (respectively) Revit Building and Revit Structure can be used to uncover potential conflicts with MEP system components early in the design process.

Well-established processes for worksharing amongst Revit users equally apply to MEP engineers using Revit Systems. Revit Worksharing distributes the power of the parametric modeling environment across a project team, providing a complete range of collaboration modes to suit the workflow and requirements of the parties involved, including the following alternatives:
  1. On-the-fly, simultaneous access to a shared model between architects, structural engineers and MEP engineers.
  2. The formal division of the project into discrete shared worksets that are reserved for editing by a single user at a time (such as "floor_1_architectural", "floor_1_structural", "floor_1_mechanical", "floor_1_plumbing" and so on).
  3. A complete separation of project elements or systems into individually managed but linked building information models.
File linking works like the External Reference (xref) capability in AutoCAD software, with the added capability to monitor and update specific key elements that are shared in the design process. Worksharing offers the additional ability to propagate and coordinate changes between designers, documentation and disciplines.

A user works independently in a workset, periodically posting changes back into the master project file and refreshing the workset with changes from other users. Worksets can be displayed as needed, avoiding the memory-intensive display of parts of the building model that aren't necessary for a specific design activity. For example, an electrical engineer may want to constantly view the architectural workset, but toggle the visibility of the structural workset on or off to suit his design needs. Standard modelviewing mechanisms are supported for worksets, allowing the MEP engineer to create drawings that include any elements from the shared models.

Figure 16
Revit Worksharing streamlines coordination between MEP team members using Revit Systems, architects using Revit Building, and structural engineers using Revit Structure.

Autodesk Revit Systems offers MEP engineers advanced functionality for building electrical and mechanical design. The computable Revit building model allows firms to create, manage and share design information more effectively - contributing to increased profitability, reduced risk and fewer inefficiencies in building design. Parametric change management helps eliminate coordination errors in documentation sets, and minimizes coordination errors between engineering design teams - as well as architects and structural engineers within Revit-based workflows.

Firms can finally transition from a workflow based on 2D drafting to the holistic approach of integrating whole systems in a 3D digital environment, facilitating digital information sharing for engineering analysis and digitally-driven design for buildings.

Consider these comments by Bob Gracilieri, President and CEO of SEi Companies, a mechanical, electrical, plumbing, and fire protection firm known for working in sophisticated environments on complex projects. "BIM brings a new dimension to the way MEP firms can do business," reports Gracilieri. "It allows us to get out of the commodity mode and offer a value proposition service to our clients. It will change the whole culture and image of our industry."

Monday, June 25, 2007

Downloadable Revit Content

Links to websites that contain downloadable content for Revit.

Web Link
Link 3D Model Sharing is a showcase of CAD related media.
Link Image After
Image*After is a large online free photo collection
Link Mayang\'s Free Textures
"Our texture library has over 3400 free to download, free to use, high-resolution textures"
Link Textures, texture library
On this website you can find more then 850 texture to download
Link Autodesk\'s Offical Download Libraries

Organise your Revit Views and Sheets into Folders

Ever have this problem? You develop your scheme within Revit and before you know it you have a list of Views and Sheets as long as your arm.


Well there is a cure. Using this technique you can create folders to help organize your Views and Sheets.

Organising your Views....

First of all add a Project parameter called "Folder" with the following properties:


You can find Project Parameters under the Settings menu


Click Add, to add a new Project parameter


Pick a name for your new parameter. You will see above that I have chosen Folders. Ensure you choose Text as the Type and Text for Group Parameter Under. Tick Views as the category. You can now OK the Project parameters dialog box.

Now select Browser Organization from the Settings Menu


Select New and give choose a name for your new Browser Organization. I have called mine My new browser

Ensure the Folders Tab is completed as per the image below



Make sure there is a tick against the new Browser Organization Profile you have just created; and click OK.

If you now look to the left of your screen, you will see that your new Browser Organization has come into effect.


For each type of view (ie plans, ceiling plans, etc) your views are all lumped under one folder named ???. This is because you haven't created and actual parameters for the folders yet, We will do that now.

You can create the folder names you need directly from within the Properties dialogue box for each view.


You will see in the image above that I have picked a view, brought up its' Properties Dialog box and created a new folder I wish this view to be placed in by typing Plans as Proposed in the Folders Parameter box.

As soon as I click Apply, a folder called Plans as Proposed is created in the Browser and the view (in this case Detail 4) is listed under it.


You will see from the image below that I've now created a logical system of organising my views. Exactly the same can be done with ceiling plans, elevations, 3D views, etc. Note: You can select multiple views simultaneously and change the Folder Parameter for them in one go- this greatly speeds up the process of organizing your views.


....and your Sheets

Exactly the same can be done for drawing sheets. To do this you need to do the whole process again but select Drawing Sheets instead of Views, in the Category section of the Parameter Properties dialog box.


Now you can create a new Browser Organization- in this case I created one called My Sheets. You Group by Sheet Folders (or whatever name you chose for your Project parameter) and you sort by Sheet Number.


e-SPECS integration for Revit MEP

e-SPECS building information modeling (BIM) enhanced integration for all Autodesk Revit-based 2008 BIM products including:
  • Revit Architecture
  • Revit MEP
  • Revit Structure

InterSpec, the leader in specification solutions integrating CAD drawings and BIM models, further enhances the e-SPECS specification solutions using the Revit application programming interface (API).

New e-SPECS functionality includes:

  • Direct API BIM Model Export
    o Replacing the ODBC Export is a faster and more efficient export of all model data pertinent to the products and materials for specifications.
  • View the Specs from within the BIM model
    o Select a family and view all the associated specification sections directly associated with that family. Select the interior wall family for instance and view the associated gypsum board, metal stud and painting sections.
  • Markup the Specs from within the BIM model
    o Revit users can not only view the sections, but add comments, questions and markup the specifications directly in the Revit session. The specifier using e-SPECS will immediately see those mark-ups and can make the required changes to the specification section(s).
  • New Spec Integration Report
    o Also within Revit, users can view a report detailing all families and the associated specification sections as well as those not yet assigned an assembly. The usage of this report within the BIM model facilitates the integration, automation and coordination of the construction documents.

“Customer are increasing the value of their BIM investment through more efficient and coordinated design processes, entire design team collaboration and efficient enterprise level data management,” says Michael Brennan, President of InterSpec. “Architects, engineers, owners, and contractors benefit from the ease of access to critical data associated with the BIM model.”

e-SPECS automates the preparation of the project specifications from Revit MEP, linking your favorite design program with your specification master documents. e-SPECS is integrated with all versions of MASTERSPEC, the industry standard for construction specification documents.

Integrated Specifications
e-SPECS integrates the construction documents with AutoCAD, Architectural Desktop and Revit, instantly updating your project specifications as you develop your drawings. Insert a VAV Box, light fixture, sink, or any other building object into your Revit MEP model and instantly update your project manual with the appropriate specifications. Enter text, keynotes, blocks, hatches, or any other Revit drawing elements, and your specifications stay in-sync, in real time. Any changes you make to the designs will automatically be incorporated into the specification manual. At any time, you can review the “history” of your specification section to see why it was included in the project. You can also review the Drawing Reconciliation reports to get a complete overview of all the drawing elements that resulted in project specification sections.

e-SPECS Integrating Specs with AutoCAD®, ADT and Revit e-SPECS extracts all the project requirements from the Revit model and instantly updates your specifications as you develop your building designs. e-SPECS generates the required specifications and lets you load the sections into its editor for any changes you may require. e-SPECS operates inside Revit MEP, instantly updating your specifications as you develop your drawings.

Product Research
Developing the specifications for the products and materials that are incorporated into your building designs is only part of the complete specifications package. You also have to identify available products that meet those specifications. With its built-in browser, e-SPECS automates the selection of available products that meet your specifications by linking to supplier information on the Internet directly from your specification document. With the click of the mouse, you go directly to a list of manufacturers supplying products applicable to the section you are editing. You’ll save hours researching products to include in your specifications and when you find the appropriate suppliers, information from their web sites can be cut and pasted into your specifications with a few simple mouse clicks.

Project Collaboration
e-SPECS brings your entire project team together, enabling collaboration on your specification documents from any place in the world. Team members can access the project using the e-SPECS Desktop markup tools or through an Autodesk Buzzsaw® online account. With e-SPECS, you can publish your entire project to Buzzsaw with the click of a mouse. e-SPECS version control keeps track of all user edits and makes it simple to incorporate comments and changes from multiple sources. You’ll save time and money and ensure that all team comments and considerations are included in the final manual.

See the demo

The enhanced integration is available today for e-SPECS customers and demonstrations can be viewed on-line at

Calculating Heating and Cooling Loads using gbXML

The gbxml format is not written by Autodesk, and any information that is imported into gbXML program is based on what that program reads from the file, and not necessarily what Autodesk exports to gbxml. I would contact these 3rd party program manufactures to see what type of documentation they have available on how they import gbxml data.

There is a room name and room number issue that Autodesk’s development team is aware of and is investigating.

These programs will not know the information about the wall construction type from the model. Currently, there is no way to bring this type of information in from the model. You will need to input all of that information into the gbXML program.

I have submitted a request for Autodesk to provide more documentation about gbxml export and the type of settings that are exported by the software.

Friday, June 22, 2007

New Build for Revit MEP 2008

This update is made available to registered users of Revit MEP 2008, and is subject to the terms and conditions of the end-user license agreement that appears during installation. The install will look to see if there is a previous installation of Revit MEP 2008 on the computer, and if there is, it will uninstall it before it installs the new build.

What you might want to do is copy the individual Revit.ini files in case any additional paths have been created per user. The Revit.ini file is located in - C:\Program Files\Revit MEP 2008\Program. Use this method for new builds, not new versions…i.e. 2008 to 2009 (or 2008.1 if that comes out).

If you created a network image, I would have a tendency to redo the image without loading the content. One thing about that is that you can not use the check box for skip content. If you do, you can not specify the paths for the content, and they will stay local on the pc. All you need to do is uncheck all the content and it will let you specify the locations. If you are not sharing the library’s, then this isn’t an issue since it all goes local, in which you could check to skip the content.

This build, (2007_0615_1700), addresses issues related to:

  • Face-hosted elements deleted when loading linked model.
  • Crash occurs when resizing a column after disabling Embedded Schedule functionality.
  • Connector cannot be placed on a Blend.
  • Panel Schedule cannot be generated using a Panel set to Switchboard Part Type.
  • Switch System deleted if included Device added to existing Circuit.
  • Gaps in surfaces occur in gbXML export in certain complex geometries.
  • Crash occurs when defining certain Energy Analysis parameters on non-bounded Room.
  • Conditional Schedule Formatting not working when condition applied to a different Field than condition terms.
  • For a selected Line, Hide Category in View affects all Categories of Lines.
  • Some Detail, Plan or Section Callouts are erroneously hidden in cropped views.
  • Masking Regions in Tag Families do not obscure elements in project and in exports.
  • Filled Regions containing Solid Fills, which are overridden to be Transparent, print inconsistently between Vector and Raster modes.
  • Instability with Overlay Planes turned off in Graphics Settings.
  • Some Crop Regions are not visible in Views in upgraded files and templates.
  • Display problems in a View when zooming with OpenGL® hardware acceleration turned on.
  • Copying nested links from the Project Browser places only the Link and not its nested components.
  • Elements do not refresh in views when deselected.
  • Product Registration for multiple products in Subscription returns “Invalid Serial Number.”
  • Unable to open .rvt file containing imported/linked .dwg with incorrect boundary hatch.

Wednesday, June 20, 2007

Using same crop region in multiple floor plan views

You want to have multiple floor plan views that use the same crop region so that all of your levels line up from floor to floor as you go through a set of construction documents.

It is possible for multiple floor plan views to use the same crop region if they are all associated with a common scope box. First, create a scope box in one of the floor plan views, and then associate the other floor plans with that scope box.

To create a scope box in a floor plan view

  1. In a plan view, click Scope Box on the Drafting tab of the Design bar.
  2. On the Options bar, enter a name and specify a height for the scope box, if desired.
  3. Draw a scope box by clicking in the upper-left corner to start the scope box and clicking in the lower-right corner to finish the scope box.

Note: Refer to the Help file for more information about scope boxes.

To associate multiple floor plan views with the same scope box so that the floor plan views have the same crop region

  1. Open the floor plan view that you want to associate with the scope box.
  2. Right-click somewhere in the view. Click View Properties.
  3. In the Element Properties dialog box, select the scope box that you created from drop-down list for the Scope Box parameter.
  4. Repeat steps 1-3 for all the floor plan views that you want to have the same crop region.

Monday, June 18, 2007

BIM Library Manager from Tectonic Partners Inc.

The BIM Library Manager is a sophisticated software application for the organization, management, naming and selection of the Revit families (2D and 3D objects such as doors, windows, cabinets, plumbing, lighting, etc.) that are necessary for the creation of Revit building models. The BIM Library Manager also includes hundreds of excellent parametric families to assist architects in the efficient creation of their BIM (Building Information Models) projects. The BIM Library Manager is licensed on a per-seat, yearly subscription basis.

The use of Revit for the creation of BIM is rapidly expanding within the architectural professions. To create 3D building models and contract documents using Revit the architect must access a collection of families that can be selected and inserted into the BIM model. Therefore thousands of families are required that may be selected from on each project.

These families have proven to be a challenge for those using Revit. As the quantity of the doors, windows, equipment, fixtures, etc. have grown the inventorying, selecting and moving of these families into the Revit model has become overwhelming. All offices and particularly firms with multiple offices are finding that their families are stored “all over the place”. Inconsistent naming conventions are also adding to the problem as often the same family is called different names within the same office. Adding to the challenge there are currently not enough well modeled families available.

Andrew Arnold, Ph.D.,VP Products states, “The BIM Library Manager was designed to solve the problems of working with Revit families. Our application resides at the architect’s office on individual computers or on their network and is designed to collect, organize and present through a simple interface their families. Tectonic has also included Naming Guidelines to assist the architect in developing a good and consistent naming system. Consistent and logical naming is extremely important as the BIM model is used for quantity take off and analysis. Additionally, the BIM Library Manager includes hundreds of well modeled parametric families that will instantly improve the architect’s efficiency in using Revit. Tectonic will continue to develop well modeled families and make them available to our customers through a link at our Internet site.”

The BIM Library Manager is designed as a platform to allow the plug in of future Tectonic products, such as the Tectonic Quantity Take Off application that will be released mid year. The system architecture weaves together tools based upon the Open Services Gateway initiative (OSGi), Eclipse development platform, and Microsoft .NET technology. The application is made available for download from the Amazon Elastic Compute Cloud.