[Bldg-sim] 90.1-2010 Baseline lighting power allowance calculation

Jones, Christopher cjones at halsall.com
Thu Sep 25 09:51:25 PDT 2014

I am somewhat confused about calculating the baseline lighting power calculation, Space-By-Space method, with respect to lighting controls.

For example, Table G3.1 states "Lighting shall be modeled having the automatic and manual controls in Section 9.4.  For a Conference/Meeting/Multipurpose room the LPD is 1.23 W/ft2. states that a conference room shall have an occupancy sensor.  Does this mean that the LPD is reduced by the factor listed in Table G3.2 is 10% for occupancy sensor in buildings greater than 5000 ft2.  So would the LPD for the baseline conference room be 1.23 * 0.9 = 1.1?

Thanks for your assistance!

Christopher Jones, P.Eng.
Tel: 416.644.4226 * Toll Free: 1.888.425.7255 x 527

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