HomeMy WebLinkAboutFile Documents.601 E Hyman Ave.0096.2018 (7).ACBK2 5 1 L i n d e n S t r e e t , S u i t e 2 0 0
F o r t C o l l i n s , C O 8 0 5 2 4
P 9 7 0 . 2 2 1 . 5 6 9 1
www.bgbuildingworks.com
October 8, 2018
Mr. Bryan May
rowland+broughton
234 E. Hopkins Avenue
Aspen, Colorado 81611
RE: Victorian Square Basement TI-MEP Plan Review
BG Project #9603.04
Bryan,
BG Buildingworks, Inc. (BG) has been asked to respond to the MEP permit review comments completed by the
City of Aspen Building Department for the Victorian Square Basement TI project in Aspen, CO. The following
outlines the City’s comment followed by BG responses:
City Note: What category are you using to calculate Pz? I would think that a pilates studio would be categorized
as health club/aerobics room in IMC table 403.1.1 which has an occupant density of 40 per 1000 sf. This would
make Pz for studio 001C = 29.24 and Pz for 001B = 22.08. This would significantly increase the overall CFM
requirement. Please clarify the methodology behind your Pz calculation or revise as needed. Please provide
more information regarding the exhaust rate to show that your ventilation system will be approximately
balanced as required by IMC 403.1.
BG Response: Occupant density based on occupant load from architectural code sheet A0.1-TI, which
aligns with IMC 403.3 allowing occupant density for spaces not specifically listed to be determined by an
analysis of the space. See revised ventilation schedule for updated values. From original permit
documents for the building, existing exhaust fans to remain serving basement total 310 CFM. New EF-1P
are 200 CFM each; 700 CFM exhaust is 90% of 780 CFM OSA.
City Note: It appears you've done this ComCheck using the building area method, this must be done using the
space by space method as the entire building is not a gymnasium. The SF you are using also seems higher than
what I am measuring. Provide cutsheets on all fixtures highlighting NRTL listing and maximum fixture wattage.
Be sure that you are using max fixtures wattage on your ComCheck rather than lamp wattage unless current
limiting devices are being used (if so, they need to be shown on the electrical/lighting plan).
BG Response: Lighting plans and COMcheck have been updated to reflect space by space calculation
method. Cutsheets have also been provided as requested.
City Note: Please fill out the owner/agent portion on both the lighting and mechanical ComCheck.
BG Response: See revised COMcheck.
Sincerely,
Erin Pasold, PE
Project Manager