Revit is now available for Dampers in CAPS

March, 2017

The release of CAPS 4.22 introduces lots of Revit content for Greenheck's most popular life-safety and control damper models. Here's a brief summary of how this content can be used to increase accuracy and efficiency during the design or prefabrication phases of a project.

Life-Safety Dampers

Code and Standards compliance:

• Section 106.3.1 of the IMC requires that the locations of penetrations in rated partitions as well as the materials and methods used to maintain the partition’s rating shall be indicated in construction documents.
• Sections & of NFPA 80 require that any dynamic HVAC system (one that maintains air movement at the indication of a fire) incorporate dynamically rated fire dampers with pressure and velocity ratings appropriate for actual system conditions.

Constraints:  All UL certified fire and smoke dampers are listed for some combination of the following code required rating criteria that can be extracted from the damper object. Using CAPS generated Revit data will ensure all schedule and drawing information for the object is in full compliance with its listing.

• minimum and maximum size limitations 
• fire protection rating (hours)
• mounting orientation requirements
• closure temperatures
• maximum pressure and velocity
• leakage class
• elevated temp. rating

Installation coordination:

• All UL certified dampers carry specific installation requirements per the terms of their listing. These requirements have an impact on the connecting ductwork, the rated partition and the space needed to allow access for inspection and testing as required by the IFC (International Fire Code).
      o Using an accurate Revit model is an easy way to schedule and coordinate these requirements during the design phase to help mitigate potential confusion and change orders once the building is under construction.


• Using the AMCA certified data generated from our configure-to-order CAPS software provides assurance that the engineer’s design will meet energy code requirements.
• The Department of Energy has mandated that all states comply with the latest version of ASHRAE 90.1. While not all states comply with the regulation many do and more will in the near future. The responsibility to ensure that a system’s performance complies with the energy code falls to the design engineer.
• The latest edition of ASHRAE 90.1 mandates specific fan power limits based on CFM. Engineers can increase the CFM per fan by minimizing pressure in the system while also minimizing duct and damper sizes by using the most accurate and lowest certified pressure loss performance in the industry. This will reduce the project first cost as well as the system’s lifetime operating cost in measurable terms.
• To assure all manufacturers meet the basis of design for pressure drop, engineers need to begin scheduling dampers and pressure drop performance on their plans.


• Use the accuracy of GH Revit models to ensure fit, access and interferences.
• Many progressive sheet metal shops are beginning to use Revit models to prefabricate the duct work and plan installation. An accurate model can significantly improve coordination and schedule attainment while at the same time reducing time and potential communication errors.

To obtain more information about this Greenheck announcement you may:

  1. Request information via e-mail
  2. Contact your local Greenheck Representative
  3. Phone us at (715) 359-6171 or fax us at (715) 355-2399
  4. Write us at Greenheck, P.O. Box 410, Schofield, WI 54476-0410
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