September 30, 2014

Customizing the Look of the Recent Files Screen in Revit (Or, Office Pranks)

Have you ever wondered how you can customize the font settings for the Recent Files screen in Revit? Perhaps the font style is a little dull for your taste, or maybe you would like for it to meet your office font standards.

While customization of the Revit interface is limited (without getting into the API) we do have the ability to make some minor changes to the Recent Files screen since it is mostly driven by the Internet Options settings in Windows. With a few simple changes, we can change the fonts (and the background color to white) to meet our needs. Give it a try sometime and if you feel like playing a little joke on one of your co-workers, pick a font style that no one can understand.



This is what the typical out of the box Recent Files screen looks like in Revit.
To change the fonts for the Recent Files screen, search your computer for the Internet Options. Once found, go to the General Tab and click on the Accessibility button under the Appearance section:
To change the default font on the Recent Files screen, place a checkmark in the “Ignore font styles specified on webpages”. You can also play around with other formatting settings as well, but the choices are limited. Click OK to return to the Internet Properties dialogue box.

Now click on the Fonts button under the Appearance Section to change the fonts.
Pick a font of your choosing. If you want to play a prank on one of your co-workers, select a font that no one can read and understand, otherwise, pick a font that meets your needs.
As you can see in this image, the font on the Recent Files screen has changed to the font of my choosing. In this case, I changed this font to a style that no one can understand.

Sash Kazeminejad, ACI, LEED AP
AEC Senior Application Specialist
Sash Kazeminejad brings proficiency in Autodesk solutions including AutoCAD and Revit Architecture to Ideate customers. His industry experience includes project management, IT, and staff design for Hennebery Eddy Architects in Portland, Oregon. He has completed seven divisions of the Architectural Record Exam, leads Revit workshops, is LEED AP accredited and is on track to achieve California licensure in 2013 with Oregon to follow. In his academic life, Sash was awarded a Montana AIA Scholarship, earned a BA in Environmental Design, an MA in Architecture from Montana State University (MSU) and taught Building Information Modeling (BIM) and related topics at MSU Gallatin College. As a Revit Architecture Autodesk Certified Professional, Sash provides Revit Architecture training and support for AEC firms.

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September 29, 2014

elearning - Upcoming Classes: Revit, Civil 3D, Vasari, Ideate Software

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Shared Parameters and Schedules in Revit MEP
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Click here for class descriptions, times and registration link. Questions? Contact education@ideateinc.com

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September 23, 2014

Re-examining Revit Based Plumbing Fixture Calculations – Part II

In Part I we discussed the benefits and challenges of the various ways of calculating plumbing fixtures in Revit, including using Ideate BIMLink in recruiting the help of Excel for updating schedules. Now, I will discuss the various formulas required in schedules or family parameters to facilitate the calculation. The formulas are based on the 2012 International Plumbing Code (IPC).

Formula Construction Types

  1. Multiple Codes: The widespread adoption of the IBC/IPC codes in the US provides a baseline for the plumbing fixture calculations, but every jurisdiction chooses to amend or adopt portions of it. To clarify which code is in use for the analysis, build a parameter that identifies the Applicable Code.
  1. Gender split: The general rule is to split the total occupancy in half to determine the number of males and females. The IPC does provide an exception that allows and adjustment of male and female distribution given statistical data on the space usage. The code is silent on how to handle an odd distribution of people. To prevent over-designing the fixture count, it is best to use fractional numbers. The 1’^2 is used to maintain consistency of the units.
    The Male_ratio value is a decimal number from 0 thru 1, requiring user manual input. Build it as a Project parameter of the Area category for visual validation in the Area plan.

    Not all occupancies are required to be segregated by sex. Residential (Group R), Institutional (Group I), and Mercantile (Group M) occupancies with an occupancy less than 50 do not require separated restrooms. In these cases, build a schedule based on the single occupancy load.
  1. Simple Ratios: Most occupancies use simple ratio factor per IPC Table 2902.1, and simple ratios are easy to do in Revit using calculated values. For example, the ratio for calculating drinking fountains in the B occupancy is 1 per 100.
    Code factors can be retrieved in formulas if you build them via Schedule Key Values, see Fig. 1 below.
  1. Occupancies with graduated ratios: Graduated ratios calculate fixture counts using a ratio for an initial number of occupants and another ratio for the remainder number of occupants. IBC applies a graduated ratio for calculating water closets and lavatories for the B, A-4, and A-5 assemblies. In Revit we can build such a requirement by using conditional formulas. For example, the IPC calculation of Water Closets reads: “1 per 25 for the first 50 occupants and 1 per 50 for remainder exceeding 50”. You can build graduated ratios in Revit using conditional formulas in calculated values:
  1. Calculations based on actual counts: The IPC prescribes for certain occupancies the use of actual counts instead of occupancy factors for fixture calculations, such as Groups I-2, I-3, R-1, R-2 & R-3 which are based on the actual number of rooms, cells, sleeping or dwelling units. For these occupancies, build a project parameter requiring user input. The advantage of a Project Parameter over a calculated value is that the value can be validated visually in the plan via instance parameter of the Area object.
  1. Fixture Substitutions: Urinals and Family/Assisted-Use toilets are typically calculated as substitutions by the IPC. The code allows up to 67% of the male water closets in Assembly and Educational groups to be substituted for Urinals, and up to 50% in all other occupancies. In Revit, the substitutions for each occupancy can be allocated as simple factors.
    Family or assisted-use “Unisex” toilets are a requirement for Assembly and Mercantile occupancy groups. The IPC permits the substitution of one toilet and one lavatory of the fixtures required by males and females but not both. In Revit, the total count of water closets and lavatories would be adjusted by subtracting 1 to either the male or female grand total.
    The problem here is that the plan displays fractional occupancies of the same group because the substitution must be applied to the aggregated fractional sum, making the calculated value invalid.

    For example, two B occupancies areas with required lavatories of 0.9, and 1.1 will need:

    (0.9+1.1)-1=2.0 fixtures
    and not:
    (0.9-1)+(1.1-1)=-0.1+0.1=0 fixtures.

    The same logic applies to Service Sinks, it is typically one unit per occupancy. The calculation of Unisex and Service Sinks cannot be constructed as calculated values when more than one area of the same occupancy are part of the schedule.
Conclusion Use the formulas discussed here to estimate code required Plumbing Fixtures. However, be aware of the limitations. Some formulas like Unisex Fixtures, Service Sinks, and Urinals, must be applied to aggregate fractional sums, and therefore cannot be used in calculated values where the occupancies are fractions. Also note that the construction of summary tables requires manual transcription and cannot be made parametric yet. We will continue searching for innovative ways to overcome these challenges. Questions or Comments? Send me an email, share your experiences with code calculations, and stay tuned to our blog for new solutions.
 



Cesar Escalante, AIA, LEED AP, CCCA
AEC Solutions Application Specialist

Cesar has a Bachelor of Architecture degree from the University of Central America in El Salvador, a Master of Architecture from the University of Texas, and is a CCCA (Certified Construction Contract Administrator). His experience includes roles as Project Manager and Project Captain at architecture firms in Oakland, California. As a member of the Ideate Tech Expert team, Cesar teaches Revit Architecture Fundamentals and provides client support and consulting. Cesar’s interest in the built environment includes his work as a volunteer for Habitat for Humanity.

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