ADOPTS WITH AMENDMENTS:

International Building Code 2015 (IBC 2015)

Heads up: There are no amended sections in this chapter.

Section 2801 General Scope

AMENDMENT
This section has been amended at the state or city level.

[M] 2801.1 Scope

AMENDMENT
This section has been amended at the state or city level.
Mechanical appliances, equipment, and systems shall be constructed, installed, and maintained in accordance with the International Mechanical Code and the NFPA 54 National Fuel Gas Code, except as modified in Sections 2801.1.1. Masonry chimneys, fireplaces, and barbecues shall comply with the International Mechanical Code and Chapter 21 of this code.

Exception: Mechanical ventilating systems may be designed in accordance with the provisions of ASHRAE 62 listed in Chapter 35.

2801.1.1 Amendments

AMENDMENT
This section has been amended at the state or city level.
The 2015 International Mechanical Code (IMC) is amended in accordance with Sections 2801.1.1.2 through 2801.1.1.8. The following section references shown in parentheses are from the IMC. These amendments supersede the IMC provisions.

2801.1.1.2 (306.1 IMC) Access

AMENDMENT
This section has been amended at the state or city level.
Appliances and any serviceable HVAC system components that utilize energy shall be accessible for inspection, service, repair, and replacement without disabling the function of a fire-resistance-rated assembly or removing permanent construction, other appliances, venting systems, or any other piping or ducts not connected to the appliance being inspected, serviced, repaired, or replaced. A level working space not less than 30 inches deep and 30 inches wide (762 mm by 762 mm) shall be provided in front of the control side to service an appliance or service access shall be provide in accordance with the manufacturer's recommendations.

2801.1.1.3 (307.3 IMC) Condensate Pumps

AMENDMENT
This section has been amended at the state or city level.
Condensate pumps located in inconspicuous spaces, such as attics and crawl spaces, shall be connected to the appliance or equipment served such that when the pump fails, the appliance or equipment will be prevented from operating or an alarm notifies the occupant of failure. Pumps shall be installed in accordance with the manufacturers' instructions.

2801.1.1.4 (504.5.1 IMC) Accessibility Identification

AMENDMENT
This section has been amended at the state or city level.
Dryer exhaust duct power ventilators shall be accessible for inspection, service, repair, and replacement without removing permanent construction. Dryer exhaust duct power ventilators shall be identified using a permanent label or tag at the appliance or access door to the appliance. A permanent label or tag giving notification to the occupant of the use of a dryer exhaust duct power ventilator shall be located within 6 feet (1829 mm) of the dryer.

2801.1.1.5 Discrete Plumbing and Mechanical Products in Plenums

AMENDMENT
This section has been amended at the state or city level.
Section 602.2.1.5 of the 2015 IMC shall be DELETED in its entirety.

2801.1.1.6 Metallic Ducts

AMENDMENT
This section has been amended at the state or city level.
Table 603.4 of the 2015 IMC shall be DELETED and replaced with Table 603.4 from the 2012 IMC, hereafter referred to as Table 2801.1.1.6.

TABLE 2801.1.1.6
DUCT CONSTRUCTION MINIMUM SHEET METAL THICKNESS FOR SINGLE DWELLING UNITS
DUCT SIZE GALVANIZED ALUMINUM MINIMUM THICKNESS (in.)
Minimum thickness (in.) Equivalent galvanized gage no.
Round ducts and enclosed rectangular ducts
14 inches or less 0.0157 28 0.0175
16 and 18 inches 0.0187 26 0.018
20 inches and over 0.0236 24 0.023
Exposed rectangular ducts
14 inches or less 0.0157 28 0.0175
Over 14 inchesa 0.0187 26 0.018
For SI: 1 inch = 25.4 mm, 1 inch water gage = 249 Pa.
  1. For duct gages and reinforcement requirements at static pressures of 1/2 -inch, 1-inch and 2-inch w.g., SMACNA HVAC Duct Construction Standards, Tables 2-1, 2-2 and 2-3, shall apply.

2801.1.1.7 (603.9 IMC) Joints, Seams, and Connections

AMENDMENT
This section has been amended at the state or city level.
All longitudinal and transverse joints, seams, and connections in metallic and nonmetallic ducts shall be constructed as specified in SMACNA HVAC Duct Construction Standards—Metal and Flexible and NAIMA Fibrous Glass Duct Construction Standards. All longitudinal and transverse joints, seams, and connections in ductwork shall be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems, liquid sealants, or tapes. Tapes and mastics used to seal fibrous glass ductwork shall be listed and labeled in accordance with UL 181A and shall be marked "181 A-P" for pressure-sensitive tape, "181 A-M" for mastic or "181 A-H" for heat-sensitive tape. Tapes and mastics used to seal flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked "181 B-FX" for pressure-sensitive tape or "181 B-M" for mastic. Duct connections to flanges of air distribution system equipment shall be sealed and mechanically fastened. Mechanical fasteners for use with flexible nonmetallic air ducts shall comply with UL 181B and shall be marked "181 B-C." Closure systems used to seal all ductwork shall be installed in accordance with the manufacturer's instructions. Unlisted duct tape is not permitted as a sealant on any duct.

Exception: Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressures less than 2 inches of water column (500 Pa) pressure classification shall not require additional closure systems.

2801.1.1.8 Access Port Protection

AMENDMENT
This section has been amended at the state or city level.
Section 1102.3 of the 2015 IMC shall be DELETED in its entirety.

2801.2 Boilers

AMENDMENT
This section has been amended at the state or city level.
All boilers, pressure vessels, and associated pressure piping shall meet the standards for construction, installation, and inspection as set forth in KRS Chapter 236 and 815 KAR Chapter 15.

2801.3 Unfired Pressure Vessels

AMENDMENT
This section has been amended at the state or city level.
All unfired pressure vessels shall meet the standards set forth in Section VIII of the ASME Boiler and Pressure Vessel Code listed in chapter 35.

2801.4 Design of Mechanical Systems

AMENDMENT
This section has been amended at the state or city level.
The building official shall allow the use of the actual occupant load in lieu of Table 1004.1.2 in the design of mechanical ventilating systems. This applies to the mechanical code and ASHRAE 62 Standard listed in Chapter 35 of this code.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING