The 2009 International Mechanical Code, save and except the deletions and amendments set forth in sections 3.02.092 and 3.02.093, attached hereto and incorporated herein for all purposes, is hereby adopted as the mechanical code for the city, prescribing regulations applicable to all commercial, residential structures and existing premises and constitutes minimum requirements and standards for commercial and residential construction applications. The 2009 International Mechanical Code is made part of this division as if fully set forth herein. One (1) copy of the 2009 International Mechanical Code is on file in the office of the city secretary being marked and designated as the 2009 edition of the International Mechanical Code.
(Ordinance 306DG, sec. 4, adopted 12/11/12)
(a) 
Fee schedule.
Section 106.5.2 is hereby amended by inserting the following fee schedule:
MECHANICAL FEE SCHEDULE
New Construction:
$0.05 per sq. ft. of gross floor area under roof, $30.00 minimum.
For warehouse and storage occupancies with no more than four (4) mechanical units without branch ducts are to be installed and comprise the entire HVAC system, the fee shall be calculated in the same manner as for alterations and remodeling below.
Additions to floor area, or remodeling involving complete HVAC system replacement:
As for new construction
Alterations & remodeling not involving total HVAC system replacement (no change in building area), including new installations, replacement and repair of: Air handlers, furnaces, air conditioning and ventilation equipment and duct systems, grease hoods, exhaust systems, boilers, chillers, etc. requiring inspection approval:
$2.00 per $1,000.00 valuation, $30.00 minimum (Where more than one inspection is required, an additional fee of $15.00 shall be assessed for each additional inspection)
Miscellaneous “generic” permits for new installations, replacement and repair of: Air handlers, furnaces, air conditioning and ventilation equipment and duct systems, grease hoods, exhaust systems, boilers, chillers, etc. requiring inspection approval:
$30.00 (Where more than one inspection is required, an additional fee of $15.00 shall be assessed for each additional inspection)
Permit fees, work commencing prior to permit approval:
As for building permit fees (see article 28.05) [sic], except that permit fee calculations shall be based on this section.
Renewal of expired permit:
 
Renewal of involuntarily terminated permit:
 
Permit transfer fee:
 
Re-inspection fees:
 
(Ordinance 306DG, sec. 4, adopted 12/11/12)
(a) 
Sloped roofs.
Section 306.5.1 is hereby amended to read as follows:
306.5.1 Sloped roofs. Where appliances, equipment, fans or other components that require service are installed on a roof having a slope of six units vertical in 12 units horizontal (50 percent slope) or greater and having an edge more than 30 inches (762 mm) above grade at such edge, a level platform shall be provided on each side of the appliance or equipment to which access is required for service, repair or maintenance. The platform shall not be less than 30 inches (762 mm) in any dimension and shall be provided with guards. The guards shall extend not less than 42 inches above the platform, shall be constructed so as to prevent the passage of a 21-inch diameter sphere and shall comply with the loading requirements for guards specified in the International Building Code. Access shall not require walking on roofs having a slope greater than 6 units vertical in 12 units horizontal (50 percent slope). Where access involves obstructions greater than 30 inches in height, such obstructions shall be provided with ladders installed in accordance with section 306.5 or stairs installed in accordance with the requirements specified in the International Building Code in the path of travel to and from appliances, fans or equipment requiring service.
(b) 
Exhaust installation.
Section 504.4 is hereby amended to read as follows:
504.4 Exhaust installation. Dryer exhaust ducts for clothes dryers shall terminate on the outside of the building and shall be equipped with a back draft damper. Screens shall not be installed at the duct termination. Ducts shall not be connected or installed with sheet metal screws or other fasteners that will obstruct the exhaust flow. Clothes dryer exhaust ducts shall not be connected to a vent connector, vent or chimney. Clothes dryer exhaust ducts shall not extend into or through ducts or plenums.
Exception: Back draft dampers shall not be required for vertical duct penetrations through roofs.
(c) 
Length identification.
Section 504.6.5 is hereby amended to read as follows:
Section 504.6.5. Length identification. Where the exhaust duct is concealed within the building construction and exceeds a total developed length of 35 feet, the equivalent length of the exhaust duct shall be identified on a permanent label or tag. The label or tag shall be located within 6 feet of the exhaust duct connection.
(d) 
Common exhaust systems for clothes dryers in multi-story structures.
Section 504.8 is hereby amended to read as follows:
504.8. Common exhaust systems for clothes dryers located in multi-story structures. Where a common multistory duct system is designed and installed to convey exhaust from multiple clothes dryers, the construction of the system shall be in accordance with all of the following:
1. 
The shaft in which the duct is installed shall be constructed and fire-resistance rated as required by the International Building Code.
2. 
Dampers shall be prohibited in the exhaust duct. Penetrations of the shaft and ductwork shall be protected in accordance with section 607.5.5, exception 2.
3. 
Rigid metal ductwork shall be installed within the shaft to convey the exhaust. The ductwork shall be constructed of sheet steel having a minimum thickness of 0.0187 inch (No. 26 gage) and in accordance with SMACNA Duct Construction Standards.
4. 
The ductwork within the shaft shall be designed and installed without offsets.
5. 
The exhaust fan motor design shall be in accordance with section 503.2.
6. 
The exhaust fan motor shall be located outside of the airstream.
7. 
The exhaust fan shall run continuously.
8. 
Exhaust fan operation shall be monitored in an approved location and shall initiate an audible or visual signal when the fan is not in operation.
9. 
Makeup air shall be provided for the exhaust system.
10. 
A cleanout opening shall be located at the base of the shaft to provide access to the duct to allow for cleaning and inspection. The finished opening shall be not less than 12 inches by 12 inches.
11. 
Screens shall not be installed at the termination.
(Ordinance 306DG, ex. A, adopted 12/11/12)