AU 2017 Proposal Time – and now you can Vote!

I’ve been a speaker at AU for a long time now (well, about 13 times) and every year it’s challenging to come up with new and updated topics. But this year is a little different – for the first time, you, the user, can vote for the classes you would like to see. So if you have a topic, like learning Dynamo for Revit, understanding how to bring Inventor families into Infraworks, or gain a better understanding to make your AutoCAD documentation look and behave like Revit documentation, then you get to pick until June 16th. It won’t be the only criteria used to pick a class, but it will be an important one.

So here’s what I’ve ponied up for this year. You can vote by following this link:

http://au.autodesk.com/speaker-resource-center/call-for-proposals/voting

Perfecting the System for Revit

Last year’s co-winner of the top lab at AU 2016, this lab set several firsts. It was a first for me as a two time winner from 2011 and 2016, but the key part was how we taught the class. We covered three tracks – duct, pipe and electrical – at the same time, showing the similarities and highlight key points for each system type. The handouts were the most detailed I had written for an AU lab – an overview, one for each track, and a key points document to narrow it down. Here’s the lab description:

“Revit systems help us to define the mechanical, electrical, and plumbing design in several ways, but the main purpose is to understand the relationships between system equipment, such as air terminals to air handling units, or from light fixture to panel. This multiple-AU award winning lab will teach you the key steps needed for controlling project system settings, and then demonstrates how to capitalize on (or disable) sizing and analysis tools related to the system. We’ll cover creating the target-source relationship between parts, and then we’ll review using the systems to improve the quality of your documentation. On top of this, you’ll get a project template that already defines everything in the class, so you can take advantage of these topics right away. The class will cover HVAC (heating, ventilating, and air conditioning), piping, and electrical items, so come and join us for this fast-paced but thorough lab—you’ll be glad you did! This session features Revit MEP and Revit.”

- Learn comprehensive steps for controlling project system settings, including mechanical and electrical system project settings

- Learn how to capitalize on the system sizing and analysis tools, and learn how to maximize project performance when you don't need these features

- Understand how to create the target and source relationship between equipment without routing a duct, pipe, or wire

- Learn how to improve the quality of your construction documents by capitalizing on system-based features

Managing BIM Projects Without Going CRAZY

This course was featured as a live event a few years back, and was one of the most watched online sessions for the AU site. Working from a higher level, this class is geared more towards the BIM manager and focuses on high-impact areas of an implementation. We’ve also added some new features to cover from the 2018 release. With the inclusion of fabrication tools in Revit 2018, we step back and learn when and why you would use this content, over the default design content that’s already been shipping with Revit.

“This course covers effective practices for project managers, architects, engineers, and designers working on Building Information Modeling (BIM) projects for all areas of architecture, structure and MEP systems. Learn how AutoCAD and Revit software have altered the traditional design workflows and processes, and discover how to manage the disruptive changes. The course will cover pre-project planning, dealing with project content and understanding what tools can really help the project bottom line. We will also review key CAD and BIM standards, and where Revit software alters typical project tasks for higher levels of development. The course is well suited for the first-time manager and experienced user. If you're ready for an energetic, fast-paced class that packs in a lot of information, then sign up early and often!”

- Discover key points for the project execution plans and staffing

- Understand how to clearly define CAD and BIM tasks for a project and how standardization between both should be approached

- Learn how to migrate third party content and filter essential data into a project family

- Examine different levels of development (LOD), and when to use design versus fabrication tools

I also added two new classes, including one on AutoCAD that was based on training demands we’ve had at our firm, Gannett Fleming.

AutoCAD versus Revit - Common Annotation Tips and Tricks

We still have a lot of AutoCAD users, but it’s kind of surprising how few of our users have really had any training on AutoCAD. As part of a standards initiative, we discovered how little (and how poorly) many of our stuff used features such as annotative scaling for text, dimensions and blocks. We also had some attempts at dynamic blocks, but only a handful of user understood how to use them, much less make them. So this class was born out of the need to create similar workflows and use tools that have the same behavior in both AutoCAD and Revit.

“When you have a lot of old school and productive AutoCAD users, sometimes it can be tough to get them into the Revit way of thinking. One way to get these users on board is to help them relate AutoCAD features to Revit tools, and learn how these similar tools can increase their productivity. In this lesson, we being by learning how annotations such as text and dimensions are controlled by the scale of the drawing. Next, we review the similarity of dynamic blocks in AutoCAD and Revit 2D symbol and annotation families. We examine how actions and parameters in AutoCAD help the user match Revit family placement behavior and features. The session closes by learning how to make AutoCAD dynamic blocks behave more like Revit family types, using visibility and lookup tools. If you need more consistency between your AutoCAD drawings, and Revit documentation, come join this old timer to learn some new tricks, and get a cool template to help you get started!”

- Learn how to define AutoCAD annotative Text, Multi-Leaders and Dimensions to match Revit annotation types

- Understand basic similarities between AutoCAD dynamic blocks and Revit 2D symbol families

- Review specific dynamic block actions and features that emulate Revit behavior

- Examine how dynamic block visibility and lookup table features are similar to Revit family types

Last, but not least…we’ve been working with Autodesk for the past few years to gain a better understanding for methods that link drawings and models together, and share the data seamlessly between programs. Without going into too much detail, the end result is a new product that is now in public beta.

Taking Your Data into the Cloud: Introducing the Revit P&ID Modeler

“In the design world, it’s not uncommon that key project data is stored in application silos, and requires a great deal of manual coordination. Autodesk has taken the first steps for AEC projects to make data available to multiple applications at once, by introducing a connected workflow that shares data from schematic diagrams with a Revit project. The Revit P&ID Modeler breaks silos down by letting the user begin with P&ID schematics in AutoCAD Plant 3D to create intelligent, data rich diagrams. The schematic data is hosted in the Autodesk 360 cloud and is referenced by Revit project models. The 3D model consisting of elements such as piping, equipment, and accessories, is then developed using information defined in the schematic, such as pipe size, type, valve type, and equipment IDs. As the model is developed, and the schematic iterated, the user receives feedback to help ensure consistency and design intent is maintained. Join us to see the next evolution of Autodesk design tools.”

- Learn how a process and instrumentation diagram is defined in AutoCAD Plant 3D, and to determine the key data to be shared

- Understand how to define a hub in the Autodesk 360 environment, and how to prepare for sharing this data with other modeling tools

- See how the Revit model is associated with a hub project, and how the P&ID model interface is defined

- Examine how design data is tracked and coordinated during the modeling process

So that’s my classes in a nutshell – we’re taking some old school to the next level, and jumping in early to get a peek into new products that can really streamline the design process. Vote early and often – I appreciate it!

Thank you again – another Top Speaker award at AU 2016!!!

Man…I can’t tell you how happy and honored I was to find out one of my labs at Autodesk University 2016 (au.autodesk.com) finished in a two way tie for top speaker. The lab, Perfecting the System for Revit, included my first ever perfect score in one category, with an overall rating of 4.79 out of 5, based on a minimum number of responses. The class tied with another lab taught by one of my good friends, Mike Massey from Applied Solutions. This was Mike’s first win, and well deserved. He’s taught at AU for many years, and now that I’m out of the Autodesk reseller channel, has been the guy in the Southeast US that I’ve been referring people to for years. He provides the same service I used to – training, consulting and program optimization, and came up through the Building Design solutions ranks the same time I did. He was one of the first MEP Implementation Certified Experts, a title we both received at the same time when Revit MEP was first getting its feet wet.

It’s a tough job to win one of these awards, but the real effort goes into the prep and planning for the class. The lab this year was the first time I taught three sets of discipline tools – duct, pipe and electrical circuiting – concurrently in a lab. We went through each of the keys areas, focusing on the similarities and differences. The course would up with five – yes, five – handouts, including an overall document that explained the features; three separate lab exercise documents for each track; and an overall tips and tricks document that featured key takeaways.

But I think what made the difference was fixing one of the things about labs that drove me nuts – and almost got me to where I didn’t want to teach them anymore. For years, we had problems with datasets in the labs – the wrong files, users not be able to locate the files, as well not understanding the software well enough to know the difference between the applications (yes, I had users a few years ago open AutoCAD MEP in a Revit MEP lab before). We also had users that could not keep up due to the lack of familiarity with the software.

To make it easier, it started with Autodesk using a web-based version of Revit for the labs this year. This made the files open quickly, and kept local users from editing items like the interface and location of palettes, etc. Another key step was having the lab datasets stored by lab location and day of the lab, which helped us locate the files easily. But I think what made the biggest difference came from my lab assistants – Matt Dillon, Matt Stachoni, and Ron Onderko – who went around and opened Revit 2017, opened the dataset project files (2) and made sure they were all already open to the view we needed to start in. When the student came into the lab, everything was ready to go, allowing us to focus on the lesson, rather than waiting for everyone to get where they needed to be. Even a few of the early arrivals pitched in and helped the lab rats get everything open and ready – for that, I can’t thank you guys enough.

The course included learning how to use Revit software systems help us to define the MEP (mechanical, electrical, and plumbing) design in several ways, but the main purpose is to understand the relationships between system equipment, such as air terminals to air handling units, or from light fixture to panel. We taught the users comprehensive steps needed for controlling project system settings, and then demonstrated how to capitalize on (or disable) sizing and analysis tools related to the system. We also covered creating the target-source relationship between parts, and then how to use the systems to improve the quality of documentation. Included were project files based on a project template that already defines everything in the class, so the user could take advantage of these topics right away. The class covered HVAC (heating, ventilating, and air conditioning), piping, and electrical items.

AU is already over, but if you want the handouts or datasets for the lab, let me know and I’ll send you a link.

And for all the folks that came in, spent 90 minutes and walked away with a fresh perspective, or learned something new, and showed your appreciation – I can’t thank you enough. We’ll see you again next year!

Attention All 3D Model Creators and Vendors...for Revit Users - Stop making my life a pain...

OK, it's time for a quick soapbox post.

First up, to all the manufacturers that are making content for us pain-in-the-rear Revit users. We're a whiny bunch, especially when we want our models to closely represent real world conditions.

For the most part, your stuff is good. The end of line guys - making the equipment, the targets and sources...We don't need every nut, bolt and clip, so when you put a preliminary model together, you can leave all that stuff out. I'm going to take it out of the model anyway when I get it to Inventor, since I really don't want a 1gb family. But if the overall skin detail is good, and when you get me a model, I make sure you're at the top of the list for the recommended vendors (even when there's three required).

For the other guys...that are using companies like ARCAT, SmartBIM and others. It's time for some ground rules.

1. First and foremost - I will jealously guard your intellectual property -as a designer, that's what defines us as well. But you need to work with your content developers and understand the chaos you cause with your shared parameters.

Every time I get a family that includes copyrights, trademarks, links to your website, your content developer's home phone, webpage, Mom's maiden name, that are defined as shared parameters, I start to use words that will make my preacher blush. STOP DOING THIS! I'm cool with you adding them as family parameters, since those don't show up for schedules and tags. You've got to understand that most of our users don't care what 04 CSI is used for, since we already have schedules defined with our standards anyway. So I wind up wasting a lot of time cleaning your mess up - and looking to either make my own version, or go to another vendor's site - which is not why you do this in the first place. You want to market your products, and we're cool with you doing that, as long as you're not making more wasted work for me and the users.

2. Second of all - I'm cool with you adding design criteria data as well - again, make it family only. And use the right format - like electrical Phase - this is NOT the same as number of poles, so don't create a shared parameter that's named one thing and used another way. Make sure it's related to the category and use as what's defined in Revit.

If I want to use your data in a schedule or as part of a load calculation, I'll use a custom shared parameter that matches my schedule, but is set to equal your data. It's easy to link family data to shared parameter data as long as the formatting is the same. You can do this with a schedule or with a formula in the type properties of a part, and they can be instance or type.

3. USE THE DEFAULT TYPE AND INSTANCE PARAMETERS! Like Model, and Manufacturer - anytime we have a deviation between examples, we make a different type - because, gasp, they ARE different - even if it's something simple as a voltage, or connection size. And stop adding your own model numbers in 3 or 4 different shared parameters. Again, make them family based so the guys making our schedules don't see the word Model show up five times when making a new schedule.

4. And last but not least - be CLEAR when it comes to type names. We edit all of these to include a descriptive name...like, Air Handling Unit. If you haven't heard, we use a really neat tool called Navisworks, that allows us to export our models into a format that can be used for collaboration. When a project is exported, Revit will assign the type name to the solid - if no name is provided, then it uses the family name. But it's equally important in the Revit model to make sure it's clearly named, so we can sort and filter schedules easily. If you name your family type 1234-FRGST-LH-BS-UAUMF-L-2, nobody else knows what the heck that means. Be clear, because my IQ isn't high enough to understand this goobletygook.

Again, I can't thank you enough, but you guys are winding up like the good Samaritan on the side of the road with a toolbox, When they try to help you change the flat tire, they strip your lug nuts when they use a pair of channel locks to loosen them up. Use the right tool for the job, and life is better for everyone.

I'm done, you can all return to your jobs now....and, guys, don't forget that Valentine's Day is in less that two weeks!

Later - db

Fixing Branch Panel Load Issues in Revit

Now that I've actually had some time to stop, here's a couple of tips on making sure you panel loads are correct. This came up when we were trying to connect a 120/240v single phase panel to a 277/480 3 phase panel.

The correct steps are to add the panels first, and make sure their distribution system is set to the correct type.

Next, create the circuit between the lower voltage panels to the transformer.

The secondary distribution setting for the transformer must match the distribution system of the lower voltage panel. 120/208 3 phase panels should match, and the transformer needs to include 3 single pole breakers.

For the 120/240 to work correctly, set the max number of single pole breakers to 2, so only two slots are used to define the circuit. When creating a single phase panel, the Panel Schedule template tools don't correctly display the example as a true A/B circuit, so don't get hung up on how it looks in the template - the panel schedule will skip showing the 3rd phase (c) when it's added to the project.

Once the circuit between the lower voltage panel is defined to the transformer, create the circuit between the transformer and the 3 phase panel.  The loads between common three phase panels will show up correctly on the same A/B/C phase as in the panel, but totaled.

Here's where we ran in to a problem - the A/B loads didn't appear on the three phase panel, but instead only 0's showed up.

If this happens, try this:

1. Add some wiring to devices on a few circuits for the low voltage panel. This helps you check to make sure the circuits are correctly defined. I used the tab selection to pick a circuit, and then use the grip to add wiring, so it does it all at once.
2. Check the connection between the 120/240 panel and the transformer. Sometimes, you need to edit the electrical circuit, and reselect the panel. Not sure why, but this worked better after I added wires.
3. Check the connection between the transformer and the three phase panel - make sure the distribution systems are both set to 480/277.

Sometimes just re-establishing the connections works, and you can always go back and delete the wire.

And if it still fails after that, then just go back to using spreadsheets for your schedules - now that's definitely not the right thing to do...audit the project, and make sure you don't have any errors, and make sure you're on the latest updates for your Revit release.

When all else fails, punt...

thanks - David B.

Rising back up...and getting ready for AU 2013!

I just realized it's been about 4 months since I posted anything. It's mainly due to the fact that we've been pretty busy, with a lot of new work, different software packages and new work processes we're trying to get out to the masses.

So, it's time for my annual Autodesk University pre-game show (twitter: #au2013; au.autodesk.com). This year, I've got three classes, plus two that I'm helping with.

First up - Wednesday, Dec. 4th, 8:00AM PST, is MP1523-L, Fast Track for Autodesk AutoCAD MEP Power Users, takes an out-of-the-box look at how to leverage projects that are designed using AutoCAD MEP, and how to get more detailed models for better results. We'll be looking at traditional and non-traditional methods to build MEP models, using custom UCS features in addition to the project level controls.

IFC compatibility is becoming a larger issue in the design industry, and this class looks at IFC functionality both ways - coming into an AutoCAD MEP project, and heading out for use with other tools such as Revit. We also will be examining space and zone usage to go with the model, which is leveraged to build gbXML files for external analysis tools like Green Building Studio. The class wraps up with a couple of quick lessons for leveraging manufacturer's 3D content, editing a part directly from a drawing, and adding custom symbology to inline accessories such as valves. The class goes by fast, needless to say...and should help you do the same with your AutoCAD MEP models.

Immediately following this lab on Wednesday, Dec. 4th at 10am PST  is MP1304, Autodesk Revit MEP in Process and Water Resource World, is mid to high level course about how we, Gannett Fleming, are using BIM tools to work on this particular types of projects. This class reviews some examples of water treatment projects that we've recently been working on, and discusses how we defined the models to get the most benefit for our design teams.

We're also looking at tips on working with various, non-traditional BIM suppliers of content, and how we work with and convert file types into something usable on our projects. The class also covers how we leverage our design models with different analysis tools, such as Autodesk's Simulation CFD and Green Building studio products, and others. We wrap up on the long term benefits to the client and contractor. This includes ideas for where our Design Build team can leverage the work we've done to keep control of project costs and deadlines, and where the owner gets more value from a BIM model that supplements traditional 2D documentation.

Thursday, Dec. 5th at 8:00am PST is one of my favorite classes to teach, MP1507, It's a MAD, MAD, MAD, MAD Autodesk Revit MEP World. This out-of-control tip sand tricks class is here to make sure your last day at AU starts with a bang, and gives you valuable help for solving MEP secrets. We start off talking about customizing templates for maximum efficiency. and move right into family customization tips. We spend some time talking about view control with templates and custom views for non-traditional (re: not flat) plans, sections and elevations. The course wraps up with examples of how leverage your BIM model for Simulation CFD, Fusion 360 and more. It's my chance to have fun with my fellow BIM fans and friends, and give you junk to fill up your bag for the ride home.

One recent addition is a panel discussion I was asked today to participate in. Joshua Benoist, a senior support specialist with Autodesk that's had to put up with all my challenging (and sometimes dumb) support questions about the Autodesk BIM products, has asked me to help offer some insights on Autodesk's 360 products. MP3174, Come Fly with Us in the Cloud: BIM Panel Discussion is Thursday, Dec. 5th at 2:30 pm PST. I'll be joining some long-time cohorts to offer up our opinions and advice on how to use the Autodesk Cloud services in a BIM collaborative workflow. This one should be really entertaining and interesting, and gives you a chance to interact with your peers in a wide open discussion. Get there early - this could get packed!

I'm really looking forward to this years event - with fewer classes to teach, I'm really looking forward to attending some sessions on really interesting topics this year. And the best part of AU is the networking, so hunt me down - and let's talk shop this year!

See you in a month! David B.

Getting in the Flow with Revit HVAC

Been spending some time trying to get more into the sizing part of duct for Revit… we’ve been working on a project for a client that required well formed systems.  When I turned the duct systems checking tools on, I kept getting some really nasty little errors that I couldn’t figure out…and a couple of items that should work, that didn’t…at least from my understanding of how duct systems should be defined. So here’s the notes from what I learned.

         Regardless of whether the program can define a system when adding  a duct or not, I found that systems normally aren’t “well connected” when you follow this method. I’ve gotten repeated errors, that I believe came down to how I was adding the duct.  The safest method for defining a system and getting the duct sizing results needed, is to create the system first by selecting the targets, such as air terminals. Selecting the source equipment (such as a VAV) once you’ve defined the duct system usually creates the most stable system, and results in the fewest errors with the data tables.

         This includes upstream systems, such as the primary air supply to the VAV boxes. One big issue we’re having with vendor provided air handling units is the lack of good, clearly named connections. No matter who the vendor is, open the family up and put in a connection name, such as primary supply or return air intake. This way, when you are defining the upstream systems, you can select the correct connection even if there are multiple connections.

         The biggest problem I ran into happened in regards to the flow direction settings at the connectors. In order for a system to be sized correctly, the source (such as the VAV box) should have the flow direction set to OUT, and the Flow Configuration set to Calculated:

  

         A loss method should also be specified – so if you set this to specific loss, make sure you put a value in here – leave it at 0 and you’ll get an error.

         The reciprocal is on the target, or air terminal. Check the flow connection, and make sure it’s set to In for supply air, and leave the flow configuration set to either preset or system. The default air terminals are set to Preset, but you can change this. If it’s set to Preset, flow factor is disabled, and you can set the loss method to coefficient or specific loss. As with the VAV, if no value is set for specific loss for pressure drop, you’ll get an error.

          
When using the Calculated/Preset combination, the airflow for the equipment is set to match the total airflow assigned to all components downstream. If you have 10 diffusers at 50 CFM, that means you’ll have 500CFM assigned to the VAV box as the calculated value in this configuration.

System flow configuration is a little different – instead of using an aggregate airflow total from all diffusers, the system will calculate the equipment airflow based on a percentage allocated to each air terminal.  If you set the flow configuration to System, and have the loss method set to specific loss, you can specify a flow factor (using a factor between 0 and 1 – with the total of all air terminals equal to 1):

If the loss method for a system flow configuration is set to Coefficient, then you can also set the loss coefficient value for the connector itself(and pressure drop will be disabled):

As with the specific loss method, if you leave these values set to 0, you’ll get an error.

Be aware that Revit already has a loss coefficient tables defined for fittings, based on ASHRAE  Duct Fitting Database, which assigns a loss to specific fittings and accessories. By assigning a coefficient directly to the air terminal, the Equal Friction/Static Regain methods for duct sizing will return better results.

If you are using specific loss, I’d recommend using a shared parameter for that value, so it can be changed without having to directly edit the connector in the family. Use the Associate Parameter tool to add the parameter. By using a shared parameter, you can also include this as part of a schedule or tag.

Here's the help file's description of what each of these settings is for:

This should help you a few of those nagging duct sizing issues - have a great day!

David B.

Revit 2013/AutoCAD MEP 2013 IFC Improvements

This post is part of an AU class this year, MP1465, Supercharge Your AutoCAD® MEP 2013. It came up as we started working with outside vendors that are solid AutoCAD MEP users, but not Revit users - and that's what we're using.

First up, know the rules:
- Architecture and Structure items convert pretty nicely, with ACAD Arch walls converting to Revit walls. You may need to swap some styles, check justifications, etc. but getting the overall model works pretty well.
- MEP objects come into Revit from ACAD MEP as in-place families, but if you setup your import options, and have your classification definitions assigned to MEP objects in ACAD MEP, then they come in as "pipes, pipe fittings, duct, etc.". Be aware - they don't have the same behavior as a duct, pipe, etc. that was created with native Revit tools. But you can add connectors as needed to make these types of connections.

Here's the excerpt from the class (or as I like to call it, the "tease")...

IFC stands for Industry Foundation Class, and it’s a file format that is universally shared between CAD platforms. The intent is that an object in a program like AutoCAD MEP can be converted into the same type of object in Revit, or other BIM applications.

In order for an object to be exported to IFC, it has to have an object classification assigned. To look at the default styles go to ProgramData\Autodesk\MEP 2013\enu\Styles directory and open the IfcShareBldgElements (MEP).dwg file.

 

In the style manager, look at the classification definitions under Multi-purpose objects. IFC properties can be assigned to these objects:

 



Once the items are selected, the classifications tab lists the information associated with an MEP object that will be exported:

 

To use these in a file, and assign them to MEP objects, you have to copy them into your current drawing. Use copy and paste in the style manager to add both classification definitions to the current drawing.

Select OK to exit the style manager. Now that they’re in the drawing, you can edit the properties of objects to assign the classification. I’ll grab the ductwork, and then go to the properties palette:

For most other parts, IFC Type Classifications are mapped to MvPart Objects (such as equipment, panels, and devices) automatically. This classification is added in the Autodesk Catalog Editor by default. You can modify this classification or add more classifications to the content library in the Autodesk Catalog Editor.

Once you’ve added the correct classifications to MEP objects, review the IFC export settings. From the application menu, select the Export tool, and then select IFC. The options are located on the export dialog, and the object tab lists all objects that loaded into a drawing – you can choose to add or remove objects as needed.

After you review the options, you can run the export. The IFC file is created in the project folder. To test this, I’m going to open the file in Revit. Before doing this, open the IFC Import options on the Application menu, under Open:

Before importing an IFC file, you need to go through and map IFC class names to Categories and sub-categories. This tells the MEP object what is used to control its display in Revit.

Once the IFC file is imported, it will appear something like this:

The imported objects take on most of the characteristics of the equivalent objects in Revit. You may need to check IFC mappings in both the AutoCAD MEP file and the Revit file during this process, but this represents a major leap in compatibility between the applications.

Be aware that imported objects may not completely take on the behavior of a normal duct. For example, the duct is treat like a duct with properties assigned, but it does not include the connection, system or sizing behavior. You have to add a connector to attach duct to it.

I don’t care what anybody says…this is really cool…

Happy BIM'ing - see you in Vegas!

'Peat and Repeat....Additional Revit Labs coming soon for AU 2012

Looks like my two Revit MEP labs will be repeated, due to demand. If you tried to get into either one of these sessions, but couldn't, check back this week. I've approved them being added, and are just working on the details for the time and location with the AU event staff...so stay tuned!

Class ID: MP1477-L  - REPEAT is MP6895-L!
Class Title: FASTER Families for Revit MEP!
Class Type: Hands-on Lab - Wednesday 1:00p

Class ID: MP1478-L - REPEAT is MP6889-L
Class Title: Perfecting the System for the Revit MEP Project
Class Type: Hands-on Lab - Tuesday 10:30am

Anybody got a throat lozenge I can borrow....?

thanks - David B.

A few shameless plugs...for AU 2012!

I gotta love our marketing people...they've really been grabbing on to social media and getting ourselves known for being thought leaders in the BIM arena.

So they put together a little highlight reel for the classes I'm teaching at AU this year, showing a few of the projects we've worked on in Revit, along with a few pics from previous classes...check it out!

http://www.youtube.com/watch?v=ZNBJzEG0ThM

Here's the list of classes I'm doing this year - in case you missed it:

 

Class ID: MP1414
Class Title: Revit MEP 2013 - On Steroids!
Wednesday - 10:00am

Class ID: MP1461
Class Title: You did WHAT? Revit MEP and AutoCAD P&ID? Amazing!
Thursday 1:00pm

PS - for the class above, I'm really excited about this one - we're doing stuff that everybody says we shouldn't be doing - but it's not just about the programming. It's about how we went through the decision and planning process, to come up with a solution that was cost effective for the company while giving us a competitive advantage in our market.

 

Class ID: MP1465-L
Class Title: Fast Content for AutoCAD MEP 2013
Tuesday - 5:30pm 

Class ID: MP1470
Class Title: Supercharge your AutoCAD MEP 2013!
Thursday - 10:00am

Class ID: MP1477-L
Class Title: FASTER Families for Revit MEP!
Thursday - 5:00pm 

Class ID: MP1478-L
Class Title: Perfecting the System for the Revit MEP Project
Wednesday - 8:00am


And you thought I was a geek...see you in Vegas!

later - David B.

Fixing Acute Angle Pipe Deflection and other Piping Errors in Revit MEP

This tip comes straight from the top, from my buddy Dave Pothier...even though he's management now, he's still a geek at heart - gotta love it...

We had a recurring couple of problems with fittings we had defined for Ductile Iron pipe. When Autodesk brought their new versions out a short while ago for the AWWA standards, we were still having some issues, so we had a chat with Dave about it.

Problem 1 - some fittings at angles like 45 degrees could not be created, and we kept getting a "line too short" error - even though you could set the angle in the family, and it would work fine. As it turns out, my techs were modeling an existing plant on a project. To keep from getting crazy plant dimensions, they did what any good CAD tech would do - they set the units to 1/2" and 1".

Then we sailed in trying to place fittings that were accurate down to 1/16" - so when these fittings would try to fit under the higher scale, they couldn't be placed. We changed the project units down to 1/32" and everything works again. Go figure...

Problem 2 - this one was a doozy, and we had a lot of back and forth about it. When we finally did a web session with Autodesk, we were explaining how mechanical joint pipe connections have to be able to flex up to 5 degrees (2.5 each way) around a fitting, since all of this work is buried underground (and gasp, dirt does move). We also had ongoing problems where we could get pipe to deflect at angles great than 90 degrees (since the fitting angles were all between 0-90) but not at acute angles (when the deflection needed to occur, since these fittings don't exist as standard). Their fittings weren't doing deflecting, but then Dave noticed how we had the pipe connector set on the fitting. Here's part of his response:

"...Select the (pipe) connectors and temporarily change the system classification from “Fitting” to “Global”

Once you do that, you can turn On the Allow Slope Adjustments check box. After turning it on, set the System Classification back to Fitting. Do that for both connectors.

Now the fitting should allow the pipe to deflect without the fitting’s angle adjusting. I’m not sure how great of an angle you can have but it should work for what you are doing. Let me know if this works for you."

Now we when make the connection, we get piping deflecting the right way:

Sometimes it's just the simplest things - but thanks again to Autodesk for helping us out, and really get the most from this great package! I'll make sure we get this into the Revit MEP lab I'm teaching at AU, so you can see how do fix this first hand.

Have a great evening! David B.

 

Drawing Yard Piping in Revit MEP

In some projects, you might want to add the piping that connects between buildings and structures as Revit pipe instead of Civil 3D. I do this when I'm trying to maintain a connected system that doesn't go out beyond a campus, or scope of a project.

It can get a little tricky, so here's a few tips. First, make sure you have your site file linked in to your view. You need that as a point of reference. In our case, we have a project that is based on shared coordinates (site is linked center to center, then we acquired the coordinates from the site file to line our project up to those coordinates).

Next, get your levels added. You can either work from an overall relative level elevation of 0, which we do include on some of our projects. When you have this level in your project, you can use the actual invert elevations from the existing or proposed pipe.

If not, you need to do a little math - for example, you have a level defined at 303'. The pipe invert is 322.43'. You need to do the math, subtracting the level from the true invert, so our pipe is at 19.43'. You don't need to do any conversion if your project is in feet and inches instead of decimal feet - typing this value in will do the conversion for you.

You also need to know if the invert elevation is to the top, middle or bottom of pipe. That will come in handy as you start to draw the pipe.

Next up - calculating slope. This is why I decided to add this post - for the life of me, I couldn't do the basic math to convert slope to inches, so being the geek I am, I did a Google search and found a great table from a book called Basic Engineering for Builders, written by Max Schwartz. Here's the conversion table:

Before you add the pipe make sure you have the right fittings, such as the ductile iron mechanical joint library. We use a modified version of an old CADWorks library based on Clow for ours, but make sure your outside diameters are correct.

Now you're ready to add the pipe. From the home tab, select the Pipe command. Set the size and invert elevation for the offset, after doing the math. Next, select Justification to bottom, middle or top based on what you have as you invert elevation.

If the pipe is sloped, make sure you turn slope on. The direction you're drawing determines whether you use slope up or slope down. If you're starting from the highpoint, select slope down. Set the slope to the right value - if the values you were given were based on percentage, use the table to find the inch to 12 inch value (re: .5% = 1/16"/12" slope).

After you review this, pick your second point. And this is where the fun begins. Sometimes, Revit doesn't want to add a right angle to the pipe, especially if the view is not at right angles. What you want to do, when this happens, is rotate your view based on a pipe segment. Make sure your view crop region is turned on.

Select the crop region, and then pick the Rotate tool from the Modify tab. The center of rotation will show up in the middle of the view. Move your mouse over the center, pick it and drag it to the end of your pipe. After you've moved the center, you can rotate the view around this point. You can either pick a line that is orthographic first, then the center line of the pipe. That usually works, but sometimes you have to pick the first line for the rotation as the centerline of the pipe, then pick an orthographic line relative to your view. Either way, get the pipe in view flat.

Once it's flat, the fittings should work as designed. If you want to see this solution live, then join me at Autodesk University this year in Las Vegas, for my class, Revit MEP - On Steroids. We're going to have a lot of stuff revolving around site based projects in that class. If you can't make it to AU, it will be available after the event if you're signed up as an AU member. You'll have a handout with pretty pictures, and they may even have a recording of the class.

Hope this helps - happy BIM'ing...David B.

Autodesk Fabrication - Yikes!

Now this I can't wait to see - Autodesk has released Autodesk Fabrication, a set of tools that works with Revit MEP models. You start with a Revit model including pipe, duct, etc. Export the model to a .RIF file, and import it into FABmep.

Fabrication lets you break the model down into modular systems, spools, etc. I noticed it contains libraries for pipe from Victaulic for fittings - but I'm real curious to see if the covered any others, like Charlotte or ACIPCO ductile iron...if they did, I'm really keen on looking into this.

Check it out at www.autodesk.com, and then search for Autodesk Fabrication - a free trial is available.

thanks - David B.

AU 2012 - Time to get loaded up!

You'd think I would have learned by now, don't offer to do too much...but if it wasn't so much fun...

For AU 2012, held at Mandalay Bay in Las Vegas this year, November 27-29, 2012 (au.autodesk.com), I've got six classes:


Class ID: MP1414
Class Title: Revit MEP 2013 - On Steroids!
Class Type: Lecture

Class ID: MP1461
Class Title: You did WHAT? Revit MEP and AutoCAD PID? Amazing!
Class Type: Lecture

Class ID: MP1465-L
Class Title: Fast Content for AutoCAD MEP 2013
Class Type: Hands-on Lab

Class ID: MP1470
Class Title: Supercharge your AutoCAD MEP 2013!
Class Type: Lecture

Class ID: MP1477-L
Class Title: FASTER Families for Revit MEP!
Class Type: Hands-on Lab

Class ID: MP1478-L
Class Title: Perfecting the System for the Revit MEP Project
Class Type: Hands-on Lab

Usually the labs fill up first, so make sure you sign up early. I'm also volunteering to be a mentor to newbies and first timers, so I'll be in Vegas on Sunday, November 25 around midday.

Registration starts in early August, so if you haven't created an AU account, get online and do it today - it's going to be a blast this year!

Later - David B.

It's not BIM...it's FIM - Fishing Information Modeling!

Ya'll know I'm a redneck....but at least I have a little sophistication...sort of. As a graduation present for elder boy from NC State, he's getting a trip to Key West to fish for a while. We're definitely getting our geek on - we're taking the Sea Fox, but also taking a 2010 Yamaha FX HO Cruiser Waverunner:

My toy...

Now, the idea was to just chase the boat, and take some cool video and pics of the boys fishing...but then the redneck in me came out...what if I could fish from the jetski, and catch my own trophies. After several minutes of exhausting research, and seeing what other like minded nutcases were doing (re: http://jetskibrian.com ), we embarked on ways to accomplish this.

First up - design a cooler/rod holder rig. Being a Sunday afternoon with no NASCAR, I came up with a little model in Revit MEP 2012, that used the default PVC pipe fittings:

Schematic Design...it don't look exactly like this...

That's where I found a flaw in the default fittings - while the elbow has the hub connection inside of the fitting, the tee's connection is on the face. Subsequently, I have downloaded the latest version of Charlotte Pipe's Revit PVC fittings, for the rest of my users to enjoy (http://www.charlottepipe.com/Default.aspx?Page=RevitGroups gets you complete libraries - very quickly).

The error in the fittings created an error in my pipe cut lengths on the schedule I defined, so I had to sort of wing it to get the shape correct. We've purchased Berkley adjustable rod holders (of the clamp on variety - https://www.nssnc.com/shop/product/berkley-baarh45-45-rod-holder?ct=10%2C207&sb=brand from my buddies at Neuse sports Shop in Kinston, NC) to attach to the sides of the rig, so I should be able to pull two rods and a net with no issues.

Next up is the installation of a Humminbird 385CI Combo GPS/Fishing finder with Downscan Imaging - this one should be interesting, we're using a RAM mount in the cup holder next to the dash (never could figure out why that was there - the bottles never stay there at 70mph).

So we're in assembly mode - when I get all this put together, I'll add another post with pics for you to enjoy...

Who says BIM geeks never get out...!

Later - David B.

Updated on the Revit Shared Parameters Converter...and failures

I really love this tool - that's why I covered it in my AU class last year. It's extremely helpful when you start to use families from manufacturers, or if you're trying to get the Autodesk out-of-the-box families to align with your custom schedules. But as we've been using it more, we keep coming across file failures. Unfortunately, the program only tells you which files failed to update, and doesn't say what caused the failure. We've figured out a few things on our end that could be causing the failure, and are adopting this process:

- Copy the files you're updating to a new folder on your c: drive, and create the destination folder where you want the updated files located. Do this by logical group - pumps, tanks, etc. should be edited one group at a time
- Set your log location to the destination folder, and then pick your shared parameter file. In that file, start with common number or text based items, for example, that you know won't exist in the target files. In our case, these are scheduling parameters that are simply informational parameters, so they're set up as common discipline, text and numbers, or discipline specific parameters that are NOT associate with a connector associated parameter.
- Make sure you pick each of the parameters you're adding and set them to the correct group - for whatever reason, I kept forgetting this step...ugh...
- Run these easy ones first - the successful conversion will show up in the destination folder, and the failures will show up in their own failure folder - so you can open these to see what happened (or didn't, in most cases)
- Re-run the tool with parameters that are likely to be associated with a connector, and may already exist in the target family. This is where we're finding the failures, with items like voltage, number of poles, etc. There doesn't seem to be a specific reason why it fails - sometimes it works, others it doesn't. Run this against the families that were created in the destination folder (make sure you create a new destination folder for these files)
- Run the tool again - if it fails this time, take the files in the failure folder and burn 'em...no, actually you'll have to manually edit these - which works every time.

Shared parameter converter helps you with the majority of your files, but you will hit some roadblocks - we still use it to handle the bulk of the conversions, but don't get discouraged if it fails...and Autodesk - how about a little more detail about the failures themselves...please?

thanks - David B.

Valves and other Schematic Symbol/Model combination families...

I'm starting up a support group...no, really...to work on tweaking the default Revit MEP libraries (starting with valves) that have to show a schematic symbol in large scale (re:1/8" and larger), and the 3D model in smaller scale (1/4" and smaller) views. I've got a few ideas - so if anyone wants to join in, send me an email at dbutts@gfnet.com. You can also join our group on Google plus, just follow this link:

https://plus.google.com/106095714132318767932

Working everyday to make Revit work better for you...so we all got more time to go fishin'...

thanks - David B.

How deep do your Levels go in a Revit MEP model?

Ran into an interesting problem...we're working on a couple of different ways to approach projects - one them involved several buildings that make up a single project. Originally, we have modeled all of the buildings in a single Revit project (yes, they were all small), based on a common coordinate at one building. For specific reasons, we had to break the project up so the buildings were in their own file.

Since the MEP project was already defined with the overall file linked in, and the levels copied and monitored from that file, breaking it down into several pieces created a problem. We also want to keep all of the MEP in a single model, so little things like schedules, panel schedules, electrical circuits, shared process systems, etc. all stay connected together nicely (since we still can't connect to items in linked files without a connector - hint, hint). There's two answers, so here's the easy one first.

Since the individual buildings (4 total) were all placed from a common origin point, all we had to do was create 4 copies of the original master, then open them up and delete anything not related to each specific building - that included levels, walls, views etc.

From this point, we could link each individual model directly into the MEP model - but now we had four links instead of one, and load times suffered. There's also a fear that a novice user could try to move or rotate the buildings to plan north and the original project base point (at which point, my hand would reach out of their monitor and wring their neck).

Here was a different tack - we kept the original composite model and attached all four buildings as linked files (not overlay - attach). Next up - copy monitor the levels from each building into the master. Once this was done, we can just load the master file in the MEP model. The levels that were copied and monitored into the composite can also be copied and monitored into the MEP model , and maintain all of the levels from separate models with one step. Imagine...copied and monitored levels being copied and monitored again...but it works, nice and clean - with all levels in the MEP file still coming from a single source.

I talked about using scope boxes to limit the extents of levels in an elevation or section view, and in this case, it's good idea to do this in the master file, so the levels coming into the MEP model don't stretch all the way across the project.

So - which approach do you think will work better for you?

Later - David B.

LOONNNNGGGG Datum Levels - Use Scope Boxes to Limit!

We had a problem where we had imported some sites that were pretty spread out - so when my using maximized his levels to 3D extents, they went WAAAAY off in space. After a half hour of stretching the grips, it started to get pretty frustrating, so I did what I should always be doing - go to the Autodesk support discussion groups (support.autodesk.com). I found this solution from Cliff B. Collins, a Registered Architect/BIM Manager at Thalden Boyd Emery Architects in St. Louis, MO .....on the Revit Architecture page...go figure, an MEP guy looking to the architect page for help (thanks and kudos to Cliff, BTW).

He recommending using scope boxes to limit the extents of the datum levels. You'll need to do this in the file that the original levels are placed (in our case, the architectural model) From the view tab, pick the scope box tool:

Next, pick two points in a plan view around the building you want to restrict the levels to:

Once the box is placed, you can stretch and rotate the boundaries as needed. Before you switch to an elevation or section view, you need to make sure the scope box is visible. While it's still selected, go to the properties and pick the Edit tool for Views Visible:

Change the elevations from invisible to visible in the view you want to use (I'm picking South - Mech as the override).

Go to that view. You'll see the scope box, and can edit the boundary from here as well. Pick the level you want to pull back to the scope box - when the level is selected, go to Properties, and change to the Scope Box 1 as the extents.

Now the level matches the scope box boundary. This tool comes in handy when you have more than one building on a site, and want to just show the levels relative to the specific structures. If you have more than one structure, name the scope box after the structure so it's clear. When the MEP engineers get your architectural model this way, we'll promise to love you forever...until you ask us to make some other flaky change...

Now we can all play nice - David B.

Getting to the Penpoint in Revit MEP

Got a call from one of my techs today saying he didn't like the way the architectural and structural backgrounds look in the MEP electrical/mechanical disciplines, when he printed them out.

I love the way the background is already lightened, but occasionally (ok, all the time), I gotta tweak the defaults to keep the higher ups happy. Two ways to do this.

1 - In the Print dialog, go to Setup - change the default for Replace Halftone with thin lines. One note - penweight settings for anything that was set to halftone in the VG dialog were disabled when this option is checked, so expect them to be thin.

2. Leave the print setup options - but go to object styles. Make sure you turn on the option for showing all disciplines - for each architectural or structural object that you want to make thicker, change the lineweight for projection to a heavier pen.

A couple of other plotting tips -

• Set the object style display options to coarse in MEP views for architectural objects such as walls - that turns off the patterns.
• Just want to turn off the patterns? Go to the VG settings (I also do this in my view template), under Projection/Surface > Patterns, uncheck Visible for any patterns in the walls - that leaves the boundaries but turns off the hatch.

Just helpin' my engineering peeps to keep making better quality sheets of paper...in a digital society...

later - David B.

Avoiding Conflicts - Duct and Pipe Routing Tip for Revit MEP

Got a situation where you have ducts or pipe at the same elevation? The fix is easy -

Start by drawing your ducts as a single run:

Add a section and then change to the view:

Use the split command (on the modify panel to break the duct into three pieces (check the delete inner segment option) Note: the program will add a union if the duct type has it included – if it does, delete the unions):

Move the middle section to the elevation you want – and if you want to slope the duct or pipe, stretch the ends back to give yourself a little room:

Right click on the grip on the top duct, and then just draw the duct down to the lower duct – you can draw it at any angle as needed:

Once the layout is done, you can edit by changing the elevation of the flat runs of duct, or use the grips on the fittings to move.

You can also use Routing Solutions to create a connection between any two ducts:

You can add or remove control points, use the grips in the preview to move the connections, etc. as needed – when you’re ready, pick finish:

So the final result is that you avoid a conflict – and it only takes a few seconds in section view to fix.

Side note – if you’re using AutoCAD MEP, you can do the same thing – just make sure you check your duct routing options, and turn off the Automatic Create New Riser at elevation change option, and you can create sloped duct or pipe!

Get routing!