Included - Village of Huntley

MEMORANDUM
April 15, 2013
REVISED May 9, 2013
TO:
FROM:
CC:
Lisa Armour, Village of Huntley
Greg Sanders, Christopher B. Burke Engineering, Ltd.
Gerry Hennelly, Christopher B. Burke Engineering, Ltd.
Mike Kerr, Christopher B. Burke Engineering, Ltd.
John Caruso, Christopher B. Burke Engineering, Ltd.
SUBJECT: Kreutzer Road Extension Roadway Lighting LED and Solar Options
(CBBEL Project No. 070103.00040)
As requested by the Village, Christopher B. Burke Engineering has performed an evaluation of
the Kreutzer Road street lighting system to include options for use of LED luminaries and solar
powered fixtures in lieu of the high pressure sodium (HPS) luminaries to match the existing
Kreutzer Road lighting system installed with the Lions Chase subdivision public infrastructure
improvements.
HPS vs. LED EVALUATION
In general, the lifespan of a high pressure sodium (HPS) lamp is approximately 13 years based
on operating an average of 10 hours per day and a rated lamp life of 50,000 hrs. The typical
rated life for LED arrays can range between 50,000 and 100,000 hours (13 to 27 years),
however the manufacturer’s warrantee for most LED retrofit assemblies does not address the
entire LED assembly or the specific luminaire it is to be installed in. Therefore, the rated life of
most current LED products is 50,000 to 70,000 hours (13 to 19 years).
As part of CBBEL’s preliminary roadway lighting design submittal a photometric analysis and
pole spacing was developed using the Village standard Lithonia Aeris AS2 250 watt (HPS)
luminaire. An average staggered pole spacing of approximately 150’ between poles along the
typical 36’ roadway cross section and an average pole spacing of 85’ between poles along the
84’ typical cross section was needed to satisfy the Village’s roadway lighting ordinance design
requirements. The preliminary roadway lighting design for Kreutzer Road extension requires 21
poles with HPS luminaires.
Lithonia also manufactures an LED option for their Aeris Lighting Series. CBBEL performed a
photometric analysis using Lithonia Aeris AS1 63 LED Array 530 mA luminaire. The calculations
show that a reduction in pole spacing from the originally calculated HPS luminaire system from
150’ to 145’ between poles along the typical 36’ roadway cross section and 80’ between poles
along the 84’ typical cross section was needed to satisfy the Village’s roadway lighting
ordinance design requirements. The reduction in pole spacing would require an additional 4
poles to be installed along the length of the new roadway section or a total of 25 poles with LED
luminaires.
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CHRISTOPHER B. BURKE ENGINEERING, LTD.
9575 W Higgins Road, Suite 600 Rosemont, Illinois 60018-4920 Tel (847) 823-0500 Fax (847) 823-0520