[Bldg-sim] 90.1-2007 Exterior Lighting Allowance calculation

[Nick Caton]

Not to be contrarian, but I think there are cases where you can reasonably claim both allowances.

If you have a large illuminated/illuminating canopy connecting to a building entrance, such as with a with many hotel drive-up lobbies, and that canopy's lighting is illuminating (directly or indirectly) a substantial ground area separate from the main entry landing, then it would be appropriate to claim both allowances.  I would not claim canopy credit for smaller canopies at entrances which only pool light on the vertical entryway and/or the landing area.

This falls squarely into the logic and guidance that allowances may only be claimed for illuminated surfaces - you cannot claim façade lighting when it does not exist in the proposed design, for example.

If there is a hard rule disallowing this practice, I would submit I have yet to run into it with any reviews.

Regards,

~Nick
[cid:489575314 at 22072009-0ABB]

NICK CATON, P.E.
SENIOR ENGINEER

Smith & Boucher Engineers
25501 west valley parkway, suite 200
olathe, ks 66061
direct 913.344.0036
fax 913.345.0617
www.smithboucher.com

From: Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Jones, Christopher
Sent: Tuesday, July 15, 2014 3:12 PM
To: AChapin at sriregistrar.com; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] 90.1-2007 Exterior Lighting Allowance calculation

Alex,
Thanks for the clarification!

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

From: AChapin at sriregistrar.com<mailto:AChapin at sriregistrar.com> [mailto:AChapin at sriregistrar.com]
Sent: Tuesday, July 15, 2014 4:06 PM
To: bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>
Cc: Jones, Christopher
Subject: 90.1-2007 Exterior Lighting Allowance calculation

Hi Christopher,

You are only allowed to include the allowance of one or the other surface type (i.e. entrance or canopy/overhangs). You can pick the one that is the most beneficial, but you can't include both.

Alex N. Chapin
Sustainability Program Engineer
SRI Green Building Certification, LLC
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Date: Tue, 15 Jul 2014 12:40:11 +0000
From: "Jones, Christopher" <cjones at halsall.com<mailto:cjones at halsall.com>>
To: "bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>" <bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>>
Subject: [Bldg-sim] 90.1-2007 Exterior Lighting Allowance calculation
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Table 9.4.5 includes allowance for Building Entrances and exits (W/linear feet) and Canopies and Overhangs (W/ft2).  If a door has a canopy do you include the allowance for both the W/linear feet and the W/ft2 of canopy?

Thanks for any insights!

Christopher Jones, P.Eng.
Halsall Associates
Tel: 416.644.4226 * Toll Free: 1.888.425.7255 x 527 *  www.halsall.com<http://cp.mcafee.com/d/1jWVIg6zqb5TS7TXCzBMTsSDuXZTDHCzAQsCQXTvKYYyOYrjKOMO-yqemjhOrjKeohspoKqejsbreI0lhmkOp2HtyvNVsThmkOp2HtyvNVsSYXHPZCn-LOb32t-LsKDtBDATC7XYJt6OaqGdQul3PWApmU6CQjqpK_9zANOoVcsCedTdBe9WvjjP-ndA3Q29uABiV2Hsbvg57OFeDlxV1KhW4E4u00CQnD66jobZ8Qg6BIpfg8BWildbFEwd7d-hbFTKed40Q7P-cGNd40lAh9PB0yq810Y-FzomYQgmQ-Pp-PBm1JNwSJ10d0h_081d><http://www.halsall.com/<http://cp.mcafee.com/d/5fHCN0idEInvovvKqen3tPqtXLTuuKqejhOrjLt-XPObbNJeXb3bW9EVpd79JeUVx5NByVEVdMJIWM1l5pj9AaJS9_7BPt5pj9AaJS9_7BPrPKLfSpvW_8Ic9TWZOWtSmujuovLORQr8FGEThVkffGhBrwqrjdFCXYCej79zANOoUTsS029WvjjP-nMSgfg8BWilbAaJMJZ0kvaAWtm7A6V7EiwhU02rhusopdwLQzh0qmNAZ0ynF9kQKCy0QsTV4KDuUUQg3gvfUOH4Qg1mh4Dek29Ew43PWCdxrPh1rjXdDXelo6T63unKyL73-Rbdk>>
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