Standard

IES TM-32

Published

Note: This standard has a new edition: IES TM-32

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Abstract

This Technical Memorandum (TM) provides a recommended standardization of parameters attached to objects, object libraries, or parametric features that represent luminaires for use in many different types of BIM software. This ANSI/IES TM-32-24 revision provides specific parameter definitions and an associated shared parameters file that are recommended for use when developing lighting content for building information models. For each parameter, the following information is recommended: • Parameter Grouping • Parameter Name • Description • Tool Tip definition (for use specifically in Autodesk Revit*) • Data Type • GUID (for use specifically in Autodesk Revit*) This TM does not include recommendations or explicit prescriptions for any of the values of the parameters, including geometric representation. The formatting of the associated data is the most important aspect to standardize to allow for compatibility across content generators and content users. Exact content, including geometry (2D and 3D) can vary according to project delivery requirements. Some geometric representations, such as 2D symbols for plans derived from the model, should follow other best-practice standards, such as ANSI/IES LP-7 Lighting Practice: Lighting Systems Contract Documents, the NECA 100-2013 NEIS Symbols for Electrical Construction Drawings (ANSI) or the NFPA 170 Standard for Fire Safety and Emergency Symbols. Requirements for 3D geometry may be based on the National BIM Standard – United States™ (NBIMSUS), Version 3, Chapter 2.7 – Level of Development Specification 2015,1 or subsequent level of development (LOD) specification versions, which was produced and copyrighted by the American Institute of Architects as part of AIA Document G202™–2013.2 Parameters included and discussed in this TM are grouped into the following categories based on the aspect of the represented lighting element they define: • General • Photometrics • Mounting • Acoustics • Mechanical • Electrical • Emergency • Maintenance For content creators, all parameters should be included, even with null values, so that the end-user may add the actual values during the design, procurement, installation, and operations process. Various information exchanges, where BIM data is transferred from one stakeholder and tool to another for a specific use—e.g., in lighting simulation and analysis—will determine which parameters are shared and when, according to BIM Project Execution Plans. This TM identifies all parameters that are possible but does not prescribe probability. * The IES does not endorse the use of any specific software. However, based on a survey of IES membership conducted in March 2021, it was determined that Revit is the BIM software predominantly used by IES members. Approximately 97% of IES members who use BIM software use Revit. Thus, the goal of the BIM Committee is to simplify adoption of this TM by including information specifically for the Revit platform.

Document information

  • Standard from IES_AC
  • Published:
  • Version: 0
  • Document type: IS