ventilatio - chicago
TRANSCRIPT
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
Requirements
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Ventilation Requirements
Presented by:
Graylin Johnson Ventilation Inspector
Self-Certification
Training Class
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
Requirements
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OVERVIEW
• Permit Applications
• Ventilation Requirements
• Ventilation Data
• Heating Data
• HVAC Notes
• Equipment Schedule
• Ventilation Corrections
• Code Memos posted on
DOB website
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
Requirements
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18-28-403.3 Table of Ventilating
Requirements
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
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VENTILATION DATA
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
Requirements
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HEATING DATA
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
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HVAC NOTES • All ductwork to be galvanized sheet metal.
• Provide locking type dampers to be installed in all supply branches.
• Floor registers shall not exceed 9” from the wall.
• Heat all rooms -10oF outside and +70oF inside.
• Provide C.O. detectors.
• Noise level not to exceed 55 dB
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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EQUIPMENT SCHEDULE
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES • Where economizer exhaust
is provided for ventilation,
verification should be
provided that exhaust will
be available at times other
than economizer or free
cooling mode.
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
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IMPORTANT
ISSUES
• Garage relief openings
should be shown and
dimensioned on drawings as
1 square foot of free area
per car, and not just noted
as such (mostly applies to
residential).
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
Requirements
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IMPORTANT
ISSUES • No common combustion air
ducts are allowed to feed
multiple units in high rises.
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
Requirements
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IMPORTANT
ISSUES • Dryer venting should be
made of a non-flammable
material.
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES • Outside air intake louvers for
ventilation that terminates in
alleys or driveways should
be protected.
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
Ventilation
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IMPORTANT
ISSUES
• Plenums for supply or return
should normally be
constructed from sheet
metal at built-out locations
other than under the floor or
ceilings.
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES • Fan housings should be
constructed from sheet metal.
Alternate materials are allowed
for return plenums only.
• Access to fans and motors is
required for servicing and
maintenance per Section 18-28-
503.1 (including permanently
lubricated motors with sealed
bearings)
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Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES
• Relief openings through
supply units are not
allowed.
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES
• Lead acid battery room
exhaust has one requirement
for the valve type. A higher
requirement applies for wet
cell battery room exhaust.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES
• Appliances can be direct
vented with a sealed
combustion chamber.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES • Warm air furnaces should
be installed such that a 90
degree angle between
return air and combustion air
is provided.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES • When undersized equipment
is required, show the vent
load with heat loss on the
plan.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES
• Outside air intake louvers
should be sized for 100% of
code supply.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES
• Windows used for borrowed
light & vent must be parallel to
the walls of the room utilizing
the borrowed light.
• 10’-0” AFF is the minimum
ceiling height requirement for
borrowed light & vent. Window
head must be minimum
9’-0” AFF.
Ventilatio
C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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IMPORTANT
ISSUES • All required light court
clearances must be
dimensioned on the
drawings.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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RECENT CODE
MEMOS • Use of a Door Undercut for Make-
up Air Transfer to Dwelling Unit
• Separation of Air Intake and
Exhaust on Rooftop Equipment
• Power Ventilators for Restaurant
Exhaust-Fan Motor Location
• UL710 Listed Commercial
Cooking Hoods
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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SUMMARY • Review the ventilation requirements for each project.
• Complete all ventilation, heat, HVAC and equipment data forms properly and submit them with your plans.
• Follow the guidelines discussed for important issues where they apply.
• Feel free to call with questions at 312-744-7563.
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C I T Y O F C H I C A G O D E P A R T M E N T O F B U I L D I N G S
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QUESTIONS &
ANSWERS