Ventilatio Ventilation Requirements Ventilation Requirements - - PDF document

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Ventilatio Ventilation Requirements Ventilation Requirements - - PDF document

Feb 13, 2024 298 likes •452 views

Ventilatio Ventilation Requirements Ventilation Requirements Presented by: Brian Harris Ventilation Inspector 1 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 Ventilatio

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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:

Brian Harris

Ventilation Inspector

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
  • Important Issues
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  • Refer to the handout in

your manual:

18-28-403.3 Table of Ventilating Requirements

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VENTILATION DATA

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HEATING DATA

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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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EQUIPMENT SCHEDULE

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VENTILATION CORRECTIONS

  • Refer to the Ventilation

Checklist in your manual.

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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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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).

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IMPORTANT ISSUES

  • No common combustion air

ducts are allowed to feed multiple units in high rises.

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IMPORTANT ISSUES

  • Dryer venting should be

made of a non-flammable material.

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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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IMPORTANT ISSUES

  • Plenums for supply or return

should normally be constructed from sheet metal at built-out locations

  • ther than under the floor or

ceilings.

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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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IMPORTANT ISSUES

  • Relief openings through

supply units are not allowed.

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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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IMPORTANT ISSUES

  • Appliances can be direct

vented with a sealed combustion chamber.

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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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IMPORTANT ISSUES

  • When undersized equipment

is required, show the vent load with heat loss on the plan.

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IMPORTANT ISSUES

  • Outside air intake louvers

should be sized for 100% of code supply.

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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.

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IMPORTANT ISSUES

  • Undercut door cannot be

broadly stated as 1/2” but should be based on some maximum velocity.

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IMPORTANT ISSUES

  • All required light court

clearances must be dimensioned on the drawings.

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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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QUESTIONS & ANSWERS