HomeMy WebLinkAboutCBPR-6-11-11217 #2 Mech Engineers Repotr.tif F
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GEORGE O. BROWN & ASSOCIATES, PLLC P.O. BOX 3423
HICKORY, N.C. 28603
CONSULTING ENGINEERS E
OFFICE (828) 324 -4002
FAX (828) 324 -40
June 30, 2011
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Catawba County Plan Review
76 North Center St. !
Hickory, N.C. 28601
Attn: Bill Rogers
Plan Reviewer
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Subj: William Jenkins Building
Hickory, N.C.
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Dear Bill:
The building cooling load, based on 582 people at 15 cfm per person (8,730 cfin), is approximately 73.1
tons. At the present time, there are six (6) nominal 10 -ton rooftop gaspacks serving the existing building,
for a total existing capacity of 60 tons. Approximately 1,455 cfm would have to be provided through each
of the six (6) gaspacks, or 36% outside air, which is the upper limit of the outside air these systems could
handle. My professional opinion is that the existing rooftop gaspacks have adequate capacity for the
anticipated occupancy of 582 people. However, one hundred percent outside air economizers with
enthalpy control and CO2 sensors would need to be added to each of the gaspacks to provide the required
amount of outside air. 1
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If you have any questions or need further assistance, please let us know.
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Sincerely,
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P&
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6/30/11
GEORGE O. BROWN, P.E.
GOB /jb
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