The IES supports research projects that are directed to advance lighting knowledge in the areas of light and visual processes, light and human health, lighting quality, and the integration of lighting in the holistic built environment. Programs targeted toward funding research efforts in these areas are being formulated now, with the additional criteria that such research be done in collaboration with co-funders and that the knowledge gained will advance the understanding of lighting and IES Standards.

Request for Proposal

January 16, 2018

  1. Project Desciption:
    1. Overview: This project supports the development of the Lighting Power Density (LPD) limits in the ANSI/ASHRAE/IES 90.1 Standard that form a significant part of the basis for most of the building energy code lighting requirements across the United States. Project tasks will support the work of the 90.1 Lighting Subcommittee (LSC) by providing computer modeling that parallels the current Excel models used in Lighting Power Density (LPD) development. Computer modeling will help improve the accuracy and applicability of the LPD values which in turn will strengthen the effectiveness of the Standard and other nationally applied energy codes and standards.

    2. Project Coordination: The Contractor shall work under the direction of the IES Director of Research and with representatives of the ANSI/ASHRAE/IES 90.1 Lighting Subcommittee (LSC). The LSC representatives have been responsible for Excel calculations and are most familiar with the inputs and assumptions utilized in the Standard 90.1 lighting calculations, and will provide the assumptions used within their existing program for input into the computer modeling. All work will be coordinated through the IES Standards & Research Department.

    3. Computer Modeling: The computer program to be used under this contract shall be AGi32. The Contractor will be provided with an existing Excel spreadsheet that includes the assumptions used by the LSC in their development of the 90.1 Standard LPDs through standard Lumen Method calculations. The primary task for this contract is to validate the Excel calculations, and to expand the calculations to determine whether the assumptions used in the spreadsheet meet other IES criteria, such as vertical illuminance. The Contractor shall use the assumptions from the Excel spreadsheets as inputs into the computer modeling as well as other information that the LSC provides to the Contractor. The output criteria (calculation grids for horizontal and/or vertical illuminance, uniformity criteria, etc), will be determined by the LSC in consultation with the Contractor prior to beginning the modeling.

    4. Scope of Work: Refer to the separate document, Statement of Work. PDF [1.0MB]

      For qualifications and project schedule, see the Request for Proposal. [PDF 285KB]
  • Collaborating Funder: Southern California Edison, California
  • Principal Investigator: Virginia Tech Transportation Institute
  • Objectives: To determine appropriate lighting design criteria for the design of lighting systems in parking lots and parking garages, and to further evaluate how various lighting levels effect visual impacts on performing tasks aligned with that criteria.