24-HOUR CARE. The actual time that a person is an occupant within a facility for the purpose of receiving care. It shall not include a facility that is open for 24 hours and is capable of providing care to someone visiting the facility during any segment of the 24 hours.
ABOVE-GROUND STORAGE TANK. A vessel, intended for fixed installation above grade, at grade, or below grade without backfill, used for the purpose of bulk storage, dispensing, handling or processing of hazardous, flammable or combustible liquids or gases and not connected to and utilized for the operation of building service equipment.
ACCESSIBLE. See Section 1102.1.
ACTIVE SHOOTER DRILL. An exercise performed by staff and occupants to evaluate their efficiency and effectiveness in executing an adopted school safety plan to respond to an active shooter event by sheltering and securing occupants in place within a building when normal evacuation would put occupants at risk. See Section 1008.1.9.11.
ADDITION. An extension or increase in floor area or height of a building or structure.
AGGREGATE. See Section 1502.1.
AGRICULTURAL, BUILDING. A structure designed and constructed to house farm implements, hay, grain, poultry, livestock or other horticultural products (see "AGRICULTURAL PURPOSES," Section 101.2, and Section 312 of this code).
AGRICULTURAL LABOR CAMPS. Camps as defined in Section 3733.41 of the Revised Code.
AGRICULTURAL PURPOSES. Includes agriculture, farming, dairying, pasturage, apiculture, horticultural, floriculture, viticulture, ornamental horticulture, olericulture, pomiculture, animal and poultry husbandry, etc.
AIRCRAFT HANGER, RESIDENTIAL. See Section 412.3.1.
AMBULATORY CARE FACILITY. Buildings or portions thereof used to provide medical, surgical, psychiatric, nursing or similar care on a less than 24-hour basis to individuals who are rendered incapable of self-preservation by the services provided.
AMUSEMENT RIDE. Any mechanical, aquatic, or inflatable device, or combination of those devices that carries or conveys passengers on, along, around, over, or through a fixed or restricted course or within a defined area for the purpose of providing amusement, pleasure, or excitement and includes carnival rides, bungee jumping facilities, and fair rides but does not include passenger tramways as defined in Section 4169.01 of the Revised Code or amusement rides operated solely at trade shows for a limited period of time. For regulation and definitions, see Sections 1711.50 to 1711.57 of the Revised Code. Amusement rides are not regulated by this code but are regulated by the Ohio department of agriculture. Also see Section 411, Special Amusement Buildings.
APPROVED. Determined to be in compliance by the authority having jurisdiction in accordance with the rules of the board.
APPROVED AGENCY. An established and accredited testing laboratory, listing agency, inspection body, or field evaluation body recognized by the board of building standards providing services consistent with their accreditation and the code section requiring the approved agency service.
APPROVED NATIONAL AND ACCREDITATION SERVICE. An established and nationally recognized service regularly engaged in evaluating the competency of agencies to conduct tests and inspections required by the rules of the board.
APPROVED SOURCE. Deleted.
ATRIUM. See Section 404.1.1.
AWNING. An architectural projection that provides weather protection, identity or decoration and is wholly supported by the building to which it is attached. An awning is comprised of a lightweight frame structure over which a covering is attached.
BUILDING. Any structure consisting of foundations, walls, columns, girders, beams, floors, and roof, or a combination of any number of these parts, with or without other parts or appurtenances.
BUILDING DEPARTMENT. An agency, department or division of the state or of the government of a municipal corporation, township, or county, which has been created and authorized in conformity with law for the purpose of enforcing construction code provisions of the board's rules applicable to structures specified in Section 3781.06 of the Revised Code.
BUILDING ELEMENT. See Section 702.1.
BUILDING LINE. The line established by law, beyond which a building shall not extend, except as specifically provided by law.
BUILDING OFFICIAL. The superintendent of the division of industrial compliance of the Ohio department of commerce or the person appointed by the superintendent to enforce this code in that division, or the designated authority charged with the administration and enforcement of this code, approved by the board in accordance with Section 103 of this code, in a municipal corporation, township or county having a building department, certified by the board pursuant to Section 3781.10 of the Revised Code, or the health commissioner or his authorized representative in health districts, whichever one has jurisdiction.
BUILDING SERVICE EQUIPMENT.Equipment, appliances, materials, devices, and systems integrated into a building which provide space heating, air conditioning, ventilation, fire protection, lighting, electricity, sanitation, water, heating, cooking, medical gas, medical vacuum, and clothes drying. Building service equipment begins from the connected stored source of liquid or gas fuel or electrical power supplying the equipment or the utility service point/point of delivery and extends through the point of use but does not include process equipment that may also be connected to the same source.
BUILDING SERVICES PIPING. All piping systems and their component parts that are part of a building system and that promote the safe, sanitary, and energy efficient occupancy of a building. Building services piping includes, but is not limited to, cold and hot potable water distribution for plumbing fixtures; sanitary lines from plumbing fixtures; nonflammable medical gas systems; medical oxygen systems; medical vacuum systems; fire protection piping systems and compressed air in dry systems; refrigeration, chilled water, condenser and cooling tower water, brine, and water/antifreeze systems; steam, steam condensate, and hot water piping systems; and fuel oil piping and fuel gas piping for heating, cooling, and cooking applications.
CANOPY. A permanent structure or architectural projection of rigid construction over which a covering is attached that provides weather protection, identity or decoration, and shall be structurally independent or supported by attachment to a building on one end and by not less than one stanchion on the outer end.
CIRCULATION PATH. See Section 1102.1.
CLEAN AGENT. See Section 902.1.
CLINIC, OUTPATIENT. See Section 304.1.1.
COMBUSTIBLE MATERIAL. See Section 703.4.
COMMERCIAL COOKING RECIRCULATING SYSTEM. Self-contained system consisting of the exhaust hood, the cooking equipment, the filters, and the fire suppression system. The system is designed to capture cooking vapors and residues generated from commercial cooking equipment. The system removes contaminants from the exhaust air and recirculates the air to the space from which it was withdrawn.
COMPRESSED GAS. See Section 307.2.
CONSTRUCTION DOCUMENTS. Written, graphic and pictorial documents prepared or assembled for describing the design, location and physical characteristics of the elements of a project necessary for obtaining plan approval in accordance with Section 106.
CONSTRUCTION TYPES. See Section 602.
CONTROLLED LOW-STRENGTH MATERIAL. A self-compacted, cementitious material used primarily as a backfill in place of compacted fill.
CORROSION RESISTANCE. The ability of a material to withstand deterioration of its surface or its properties when exposed to its environment.
CREDENTIALS. The badge of office, certificate, or letter issued by a governmental department to an employee for the identification of said employee in the performance of his duties.
CUSTODIAL CARE. Assistance with day-to-day living tasks; such as assistance with cooking, taking medication, bathing, using toilet facilities and other tasks of daily living. Custodial care includes care for occupants that have the ability to respond to emergency situations and evacuate at a slower rate and/or who have mental and psychiatric complications.
DAMPER. See Section 702.1.
DECORATIVE MATERIALS. All materials applied over the building interior finish for decorative, acoustical or other effect (such as curtains, draperies, fabrics, streamers and surface coverings), and all other materials utilized for decorative effect (such as batting, cloth, cotton, hay, stalks, straw, vines, leaves, trees, moss and similar items), including foam plastics and materials containing foam plastics. Decorative materials do not include floor coverings, ordinary window shades, interior finish and materials 0.025 inch (0.64 mm) or less in thickness applied directly to and adhering tightly to a substrate.
DESIGN DISPLACEMENT. See Section 1908.1.1.
DRY-CHEMICAL EXTINGUISHING AGENT. See Section 902.1.
DWELLING. Any building that exclusively contains one, two, or three dwelling units, each of which may be occupied by a family and no more than five lodgers or boarders, intended, or designed to be built, used, rented, leased, let or hired out to be occupied, or that is occupied for living purposes, physically separated from adjacent structures, and with an independent exit from each dwelling unit.
DWELLING UNIT. A single unit providing complete, independent living facilities for one or more persons, including permanent provisions for living, sleeping, eating, cooking and sanitation. The dwelling unit may include any accessory space intended for the exclusive use of the occupants of an individual dwelling unit such as a private garage, greenhouse, etc.
EMERGENCY SITUATION. An incident requiring a response to prevent loss of life or injury at a school building involving an active shooter or similar occurrence where normal evacuation could put occupants at risk, but shall not include fire, tornado/earthquake, building collapse, boiler failure, or similar occurrence caused by natural activity or building failure. See Section 1008.1.9.11.
EXTERIOR INSULATION AND FINISH SYSTEM (EIFS). See Section 1402.1.
EXTERIOR INSULATION AND FINISH SYSTEM (EIFS) WITH DRAINAGE. See Section 1402.1.
FIBER CEMENT SIDING. See Section 1402.1.
FIRE ALARM BOX, MANUAL. See Section 902.1.
FIRE PREVENTION. The preventative measures which provide for the safe conduct and operation of hazardous processes, storage of combustible and flammable materials, conducting of fire drills and the maintenance of fire protection, detection and extinguishing service equipment and good housekeeping conditions.
FLAMMABLE GAS. See Section 307.2.
FLAMMABLE LIQUEFIED GAS. See Section 307.2.
FUEL TANK. A tank containing fuel for an engine(s) or appliance.
FURNACE ROOM. A room primarily utilized for the installation of fuel-burning space-heating and water-heating appliances other than boilers.
GRADE FLOOR OPENING. A window or other opening located such that the sill height of the opening is not more than 44 inches (1118 mm) above or below the finished ground level adjacent to the opening.
HABITABLE SPACE. A space in a building for living, sleeping, eating or cooking. Bathrooms, toilet rooms, closets, halls, storage or utility spaces and similar areas are not considered habitable spaces.
HIGH-RISE BUILDING. A building with an occupied floor located more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access.
HISTORIC BUILDINGS. Buildings that are listed in or eligible for listing in the "National Register of Historic Places," or designated as historic by certified local governments in accordance with the National Historic Preservation Act of 1966 as amended. See Section 3409.
HOME. An institution, residence, or facility, required to be licensed by the Ohio Department of Health, that provides, for a period of more than twenty-four hours, whether for a consideration or not, accommodations to three or more unrelated individuals who are dependent upon the services of others, including a nursing home, residential care facility, home for the aging, a veterans' home operated under Chapter 5907. of the Revised Code, and a county home or district home that is or has been licensed as a residential care facility. For the purposes of licensure of homes, pursuant to Chapter 3721. of the Revised Code, any residence, institution, hotel, congregate housing project, or similar facility that meets the definition of a home under this section is such a home regardless of how the facility holds itself out to the public.
HOME, COUNTY AND DISTRICT. A county home or district home operated under Chapter 5155. of the Revised Code.
HOME FOR THE AGING. A home that provides services as a residential care facility and a nursing home, except that the home provides its services only to individuals who are dependent on the services of others by reason of both age and physical or mental impairment. The part or unit of a home for the aging that provides services only as a residential care facility is required to be licensed by the Ohio Department of Health as a residential care facility. The part or unit that may provide skilled nursing care beyond the extent authorized by Section 3721.011 [3721.01.1] of the Revised Code is required to be licensed as a nursing home.
HOME, NURSING. A home used for the reception and care of individuals who by reason of illness or physical or mental impairment require skilled nursing care and of individuals who require personal care services but not skilled nursing care. A nursing home is required to be licensed by the Ohio Department of Health to provide personal care services and skilled nursing care.
HOME, TYPE A FAMILY DAY-CARE. A home where the administrator permanently resides and where care is provided for seven to twelve children under six years of age or four to twelve children when at least four are under two years of age. Licensure is required of these homes by the Ohio Department of Job and Family Services when at least one of the children cared for is not a sibling of the others and the home is not the permanent residence of the children. These homes are also referred to as Type A Homes and Type A Child Care and are exempt from the rules of the board. Also see Chapter 5104. of the Revised Code
HOME, TYPE B FAMILY DAY-CARE. A home where the administrator permanently resides and where care is provided for one to six children under six years of age with no more than three children under two years of age when at least one of the children cared for is not a sibling of the others and the home is not the permanent residence of the children. These homes are also referred to as Type B Homes and Type B Child Care and are exempt from the rules of the board. Also see Chapter 5104. of the Revised Code.
HOUSING UNIT. See Section 408.1.1.
INCAPABLE OF SELF-PRESERVATION. Persons because of age, physical limitations, mental limitations, chemical dependency, or medical treatment who cannot respond as an individual to an emergency situation.
INDUSTRIALIZED UNITS. See Section 117.
INERT GAS. See Section 307.2.
INSTITUTION OF HIGHER EDUCATION. A state institution of higher education as defined in Section 3345.011 of the Revised Code, a private nonprofit college or university located in this state that possesses a certificate of authorization issued pursuant to Chapter 1713 of the Revised Code, or a school located in this state that possesses a certificate of registration and one or more program authorizations issued by the state board of career colleges and schools under Chapter 3322 of the Revised Code. See School Building.
INTERLAYMENT. See Section 1502.1.
JURISDICTION. The authority to enforce this code by municipal corporations, townships or counties certified by the board in accordance with Section 3781.10 of the Revised Code or the division of industrial compliance in the department of commerce.
LABEL. An identification applied on a product by the manufacturer that contains the name of the manufacturer, the function and performance characteristics of the product or material, and the name and identification of an approved agency and that indicates that the representative sample of the product or material has been tested and evaluated by an approved agency (see Section 1703.5 and "Inspection certificate," "Manufacturer's designation" and "Mark").
LABELED. Equipment, materials or products to which has been affixed a label, seal, symbol or other identifying mark of a nationally recognized testing laboratory, inspection agency or other organization concerned with product evaluation that maintains periodic inspection of the production of the above-labeled items and whose labeling indicates either that the equipment, material or product meets identified standards or has been tested and found suitable for a specified purpose.
LIGHT-FRAME CONSTRUCTION. A type of construction whose vertical and horizontal structural elements are primarily formed by a system of repetitive wood or cold-formed steel framing members.
LIMITED SPRAYING SPACE. An area in which spraying operations for touch-up or spot painting of a surface area of nine square feet (0.84 m2) or less are conducted.
LISTED. Equipment, materials, products or services included in a list published by an organization acceptable to the code official and concerned with evaluation of products or services that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services and whose listing states either that the equipment, material, product or service meets identified standards or has been tested and found suitable for a specified purpose.
LOT. A portion or parcel of land considered as a unit.
LOT LINE. A line dividing one lot from another, or from a street or any public place.
MANUFACTURER'S DESIGNATION. An identification applied on a product by the manufacturer indicating that a product or material complies with a specified standard or set of rules (see also "Inspection certificate," "Label" and "Mark").
MARK. An identification applied on a product by the manufacturer indicating the name of the manufacturer and the function of a product or material (see also "Inspection certificate," "Label" and "Manufacturer's designation").
MECHANICAL EQUIPMENT SCREEN. See Section 1502.1.
MENTAL HOSPITALS. See Section 308.3.1.
NATURAL GAS PROCESSING FACILITIES. Installations, including associated buildings, pipes, valves, tanks, and other equipment, used to separate various fluids, hydrocarbons, natural gas liquids, and impurities from the raw natural gas, manufacturing residue gas suitable for transmission and distribution to end users.
NATURAL GAS LIQUIDS FRACTIONATION FACILITIES. Installations, including associated buildings, pipes, valves, tanks, and other equipment, used for the separation of mixtures of light hydrocarbons or natural gas liquids into individual, purity natural gas liquid products, which include ethane, propane, normal butane, isobutane, and natural gasolines.
NORMAL TEMPERATURE AND PRESSURE (NTP). See Section 415.2.
OCCUPANCY. The purpose for which a building, or portion thereof, is used.
OCCUPANCY, CHANGE OF. See Section 3402.
OCCUPIABLE SPACE. A room or enclosed space designed for human occupancy in which individuals congregate for amusement, educational or similar purposes or in which occupants are engaged at labor, and which is equipped with means of egress and light and ventilation facilities meeting the requirements of this code.
OWNER. Any person, agent, firm or corporation having a legal or equitable interest in the property.
OXIDIZING GAS. See Section 307.2.
PENETRATION FIRESTOP. See Section 702.1.
PENTHOUSE. See Section 1502.1.
PERSON. An individual, heirs, executors, administrators or assigns, and also includes a firm, partnership or corporation, its or their successors or assigns, or the agent of any of the aforesaid. Whenever the word "person" is used in any section of this code prescribing a penalty or fine, as to partnerships or associations, the word shall include the partners or members thereof, and as to corporations, shall include the officer, agents or members thereof who are responsible for any violation of such section.
PHOTOLUMINESCENT. See Section 1002.1.
POWER PIPING. Piping systems and their component parts that are not building services piping systems, and that may be installed within electric power generating stations, industrial and institutional plants, utility geothermal heating systems, and central and district heating and cooling systems. Power piping includes, but is not limited to, piping used in the distribution of plant and process steam at boiler pressures greater than fifteen pounds per square inch gauge, high temperature water piping from high pressure and high temperature boilers, power boiler steam condensate piping, high pressure and high temperature water condensate piping, and compressed air and hydraulic piping upstream of the first stop valve off a system distribution header.
PREMISES. A lot, plot or parcel of land, including any structure thereon.
- The columns;
- Structural members having direct connections to the columns, including girders, beams, trusses and spandrels;
- Members of the floor construction and roof construction having direct connections to the columns; and
- Bracing members that are essential to the vertical stability of the primary structural frame under gravity loading shall be considered part of the primary structural frame whether or not the bracing member carries gravity loads.
PROCESS PIPING. Piping systems and their component parts that are not building services or power piping systems and that may be installed in petroleum refineries; chemical, pharmaceutical, textile, paper, semiconductor, and cryogenic plants; and related processing plants and terminals.
PROCESSING EQUIPMENT. Equipment, machinery and devices specifically intended and used exclusively for manufacturing and other similar purposes. Processing equipment does not include the building electrical service and distribution system, mechanical and plumbing systems related to space heating, air conditioning, ventilation, water distribution and sanitation or other systems regulated by board rules.
PUBLIC ENTITY. (1) Any state or local government; (2)Any department, agency, special purpose district, or other instrumentality of Ohio or local government; and (3) The national railroad passenger corporation, and any commuter authority (as defined in Section 103(8) of the "Rail Passenger Service Act").
PUBLIC SCHOOL. Any school operated by a school district board of education, any community school established under Chapter 3314. of the Revised Code, any STEM school established under Chapter 3326. of the Revised Code, and any college-preparatory boarding school established under Chapter 3328. of the Revised Code. See School Building.
REFLECTIVE PLASTIC CORE FOIL INSULATION. An insulation material packaged in rolls that is less than 0.5 inch (12.7 mm) thick, with at least one exterior low emittance surface (0.1 perm or less) and a core material containing voids or cells.
REGISTERED DESIGN PROFESSIONAL. Any architect holding a certificate issued under Sections 4703.10 and 4703.36 of the Revised Code or any engineer holding a certificate issued under Section 4733.14 of the Revised Code.
RELIGIOUS WORSHIP, PLACE OF. A building or portion thereof intended for the performance of religious services.
REPAIR. The reconstruction or renewal of any part of an existing building for the purpose of its maintenance.
REPAIR, MINOR. The reconstruction or renewal of any part of an existing building for the purpose of its maintenance when the work has limited impact on access, safety or health. Minor repairs do not include the cutting away of any wall, partition or portions of walls, the removal or cutting of any structural beam or load bearing support, or the removal or change of any required element of accessibility, means of egress, or rearrangement of parts of a structure affecting the egress requirements. Minor repairs do not include addition to, alteration of, replacement or relocation of any standpipe, water supply, sewer, drainage, drain leader, gas, soil, waste, vent or similar piping, electric wiring or mechanical or other work affecting public health or general safety.
RESIDENTIAL AIRCRAFT HANGAR. See Section 412.2.
REVISED CODE. All statutes of a permanent and general nature of this state as revised and consolidated into general provisions, titles, chapters, and sections.
ROOF REPLACEMENT. See Section 1502.1.
SAFE. As applied to a building, means free from danger or hazard to the life, safety, health or welfare of persons occupying or frequenting it, or of the public, and from danger of settlement, movement, disintegration, or collapse, whether such danger arises from the method or materials of its construction or from equipment installed therein, for the purpose of lighting, heating, the transmission or utilization of electric current, or from its location or otherwise.
SALLYPORT. See Section 408.1.1.
SANITARY. As applied to a building, means free from danger or hazard to the health of persons occupying or frequenting it or to that of the public, if such danger arises from the method or materials of its construction or from any equipment installed therein for the purpose of lighting, heating, ventilating, or plumbing.
- Structural members not having direct connections to the columns;
- Members of the floor construction not having direct connections to the columns; and
- Bracing members other than those that are part of the primary structural frame.
SERIOUS HAZARD. A hazard of considerable consequence to safety or health through the design, location, construction, or equipment of a building, or the condition thereof, which hazard has been established through experience to be of certain or probable consequence, or which can be determined to be, or which is obviously such a hazard.
SKYLIGHT, UNIT. A factory-assembled, glazed fenestration unit, containing one panel of glazing material that allows for natural lighting through an opening in the roof assembly while preserving the weather-resistant barrier of the roof.
SKYLIGHTS AND SLOPED GLAZING. Glass or other transparent or translucent glazing material installed at a slope of 15 degrees (0.26 rad) or more from vertical. Glazing material in skylights, including unit skylights, solariums, sunrooms, roofs and sloped walls, are included in this definition.
SLEEPING UNIT. A room or space in which people sleep, which can also include permanent provisions for living, eating, and either sanitation or kitchen facilities but not both. Such rooms and spaces that are also part of a dwelling unit are not sleeping units.
SMOKE COMPARTMENT. See Section 702.1.
SPECIAL AMUSEMENT BUILDING. See Section 411.2.
SPECIFIED. See Section 2102.1.
SPRAY BOOTH. A mechanically ventilated appliance of varying dimensions and construction provided to enclose or accommodate a spraying operation and to confine and limit the escape of spray vapor and residue and to exhaust it safely.
SPRAY ROOM. A room designed to accommodate spraying operations constructed in accordance with this code and separated from the remainder of the building by a minimum one-hour fire barrier.
SPRAYING SPACE. An area in which dangerous quantities of flammable vapors or combustible residues, dusts or deposits are present due to the operation of spraying processes. The building official is authorized to define the limits of the spraying space in any specific case.
SRO (Single room occupancy) FACILITY. A facility with more than five sleeping rooms that is kept, used, maintained, advertised or held out to the public as a place where each individual is provided with separate sleeping accommodations which is intended to be the permanent residence of a single occupant. SRO facilities are required to be licensed by the Ohio Fire Marshal and do not include agricultural labor camps, apartment houses, lodging houses, rooming houses or college dormitories.
STEEP SLOPE. A roof slope greater than two units vertical in 12 units horizontal (17-percent slope).
STORY. That portion of a building included between the upper surface of a floor and the upper surface of the floor or roof next above (also see "Basement," "Mezzanine" and Section 502.1). It is measured as the vertical distance from top to top of two successive tiers of beams or finished floor surfaces and, for the topmost story, from the top of the floor finish to the top of the ceiling joists or, where there is not a ceiling, to the top of the roof rafters.
- More than 6 feet (1829 mm) above grade plane; or
- More than 12 feet (3658 mm) above the finished ground level at any point.
STRUCTURE. That which is built or constructed.
SUBSTANTIAL IMPROVEMENT. See Section 1612.2.
SWIMMING POOLS. See Section 3109.2.
TEMPORARY DOOR LOCKING DEVICE. An assembly of parts intended to be engaged by a trained school staff member in a school building for the purpose of preventing both ingress and egress through a door in a school building for a finite period of time in an emergency situation and during active shooter drills. See Section 1008.1.9.11.
TENT. A structure, enclosure or shelter, with or without sidewalls or drops, constructed of fabric or pliable material supported in any manner except by air or the contents it protects.
TRANSIENT, PRIMARILY. See Section 310.2.
TRANSIENT AIRCRAFT. See Section 412.2.
TYPE A FAMILY DAY-CARE HOME. See "Home, Type A Family Day-care."
TYPE B FAMILY DAY-CARE HOME. See "Home, Type B Family Day-care."
UNDERLAYMENT. See Section 1502.1.
USE (MATERIAL). See Section 415.2.
VAPOR AREA. An area containing flammable vapors in the vicinity of dip tanks, drain boards or associated drying, conveying or other equipment during operation or shutdown periods. The code official is authorized to determine the extent of the vapor area, taking into consideration the characteristics of the liquid, the degree of sustained ventilation and the nature of the operations.
VAPOR-PERMEABLE MEMBRANE. A material or covering having a permeance rating of 5 perms (52.9 ×10-10 kg/Pa • s • m2) or greater, when tested in accordance with the dessicant method using Procedure A of ASTM E 96. A vapor-permeable material permits the passage of moisture vapor.
VAPOR RETARDER CLASS. A measure of a material or assembly's ability to limit the amount of moisture that passes through that material or assembly. Vapor retarder class shall be defined using the desiccant method of ASTM E 96 as follows:
Class I: 0.1 perm or less.
Class II: 0.1 < perm ≤ 1.0 perm.
Class III: 1.0 < perm ≤ 10 perm.
VENTILATION. The natural or mechanical process of supplying conditioned or unconditioned air to, or removing such air from, any space.
WALKWAY, PEDESTRIAN. A walkway used exclusively as a pedestrian trafficway.
WEB. See Section 2102.1.