Mechanical appliances, equipment and systems shall be constructed and installed in accordance with this chapter, the IMC and the IFGC. Masonry chimneys, fireplaces and barbecues shall comply with the IMC and Chapter 21 of this code.
Exception: This code shall not govern the construction of water heaters, boilers and pressure vessels to the extent which they are regulated by the Virginia Boiler and Pressure Vessel Regulations (16VAC25-50). However, the building official may require the owner of a structure to submit documentation to substantiate compliance with those regulations.
Heating facilities shall be required in every enclosed occupied space in nonresidential structures. The heating facilities shall be capable of producing sufficient heat during the period from October 1 to May 15 to maintain a temperature of not less than 65°F (18°C) during all working hours. The required room temperature shall be measured at a point three feet (914 mm) above the floor and three feet (914 mm) from the exterior walls.
Processing, storage and operation areas that require cooling or special temperature conditions and areas in which persons are primarily engaged in vigorous physical activities are exempt from these requirements.
The following changes shall be made to the IMC:
- Change Section 403.3 of the IMC to read:
- Add the following areas to Table 403.3 of the IMC in the occupancy classifications shown:
- Change Section 505.1 of the IMC to read:
- In Group R buildings, where installed in accordance with the manufacturer’s installation instructions and where mechanical or natural ventilation is otherwise provided in accordance with Chapter 4, listed and labeled ductless range hoods shall not be required to discharge to the outdoors.
- Ducts for domestic kitchen cooking appliances equipped with downdraft exhaust systems shall be permitted to be constructed of Schedule 40 PVC pipe and fittings provided that the installation complies with all of the following:
- 2.1. The PVC duct shall be installed under a concrete slab poured on grade.
- 2.2. The underfloor trench in which the PVC duct is installed shall be completely backfilled with sand or gravel.
- 2.3. The PVC duct shall extend not more than 1 inch (25 mm) above the indoor concrete floor surface.
- 2.4. The PVC duct shall extend not more than 1 inch (25 mm) above grade outside of the building.
- 2.5. The PVC duct shall be solvent cemented.
- Add Section 505.3 to the IMC to read:
- Change Section 507.2.3 of the IMC to read:
- Change Section 908.5 of the IMC to read:
- Change Item 4 of Section 928.1 of the IMC to read:
- 4. Be provided with an approved water supply and sized for peak demand. The quality of the water shall be provided in accordance with the equipment manufacturer’s recommendations. The piping system and protection of the potable water supply shall be installed as required by the IPC.
DENSITY#/1,000 ft2 a
ZONE, RaCFM/FT2 a
|Food and beverage |
|Bars or cocktail |
lounges designatedas an area where
Cafeteria or fastfood designated as
an area wheresmoking is
Dining roomsdesignated as
an area wheresmoking is permittedb
Lounges designatedas an area where
The following changes shall be made to the IFGC:
- Change Section 301.1 of the IFGC to read:
- Coverage of piping systems shall extend from the point of delivery to the connections with gas utilization equipment. (See “point of delivery.”)
- Systems with an operating pressure of 125 psig (862 kPa gauge) or less.
- Piping systems requirements shall include design, materials, components, fabrication, assembly, installation, testing and inspection.
- Requirements for gas utilization equipment and related accessories shall include installation, combustion and ventilation air and venting.
- Portable LP-Gas equipment of all types that are not connected to a fixed fuel piping system.
- Installation of farm equipment such as brooders, dehydrators, dryers, and irrigation equipment.
- Raw material (feedstock) applications except for piping to special atmosphere generators.
- Oxygen-fuel gas cutting and welding systems.
- Industrial gas applications using gases such as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen.
- Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants.
- Integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions.
- LP-Gas installations at utility gas plants.
- Liquefied natural gas (LNG) installations.
- Fuel gas piping in power and atomic energy plants.
- Proprietary items of equipment, apparatus, or instruments such as gas generating sets, compressors, and calorimeters.
- LP-Gas equipment for vaporization, gas mixing, and gas manufacturing.
- Temporary LP-Gas piping for buildings under construction or renovation that is not to become part of the permanent piping system.
- Installation of LP-Gas systems for railroad switch heating.
- Installation of LP-Gas and compressed natural gas (CNG) systems on vehicles.
- Except as provided in Section 401.1.1, gas piping, meters, gas pressure regulators, and other appurtenances used by the serving gas supplier in the distribution of gas, other than undiluted LP-Gas.
- Building design and construction, except as specified herein.
- Add Section 404.11.3 to the IFGC to read: