[Ord. 1-1953, 2/9/1953, Art. II, § 200; as amended by Ord. 318, 1/8/1987, § 1; by Ord. 436, 8/7/2007, § 1; by Ord. 445, 7/7/2009, Art. I; and by Ord. 460, 6/25/2012, § I]
1. 
Unless otherwise expressly stated, the following words shall, for the purpose of this chapter, have the meaning herein indicated.
2. 
Words used in the singular number include the plural, and words in the plural include the singular; words used in the masculine gender include the feminine and neuter; and the word "building" includes the word "structure."
3. 
Specific Definitions.
ACCESSORY BUILDING
A building subordinate to the principal building on the lot and used for purposes customarily incidental to those of the principal building.
AIRPORT ELEVATION
The highest point of an airport's usable landing area measured in feet above sea level. The airport elevation of the Allegheny County Airport is 1,250 feet above mean sea level.
AIRPORT HAZARD
Any structure or object, natural or man-made, or use of land which obstructs the airspace required for flight or aircraft in landing or taking off at an airport or is otherwise hazardous as defined in 14 CFR Part 77 and 74 Pa.C.S.A. § 5102.
AIRPORT HAZARD AREA
Any area of land or water upon which an airport hazard might be established if not prevented as provided for in this chapter and the Act 164 of 1984 (Pennsylvania Laws Relating to Aviation).
APPROACH SURFACE (ZONE)
An imaginary surface longitudinally centered on the extended runway center line and extending outward and upward from each end of the primary surface. An approach surface is applied to each end of the runway based on the planned approach. The inner edge of the approach surface is the same width, as the primary surface and expands uniformly depending on the planned approach. The approach surface zone, as shown on Figure 27-1, is derived from the approach surface.
BOARD OF COMMISSIONERS
The Board of Commissioners of the Township of Baldwin.
BUILDING LINE
A designated line located a fixed distance from a street right-of-way line or front, side, or rear lot lines relevant to a structure or proposed structure.
BUILDING OFFICIAL (or CODE OFFICIAL)
Any person who shall be appointed by the Board of Township Commissioners from time to time to be the administrator of the day to day application of the provisions contained in the Township's building and property maintenance ordinances, as well as applicable provisions of this chapter.
CONDITIONAL USE
The permission or approval granted by the Board of Commissioners in situations where provision therefor is made by the terms of this chapter.
CONICAL SURFACE (ZONE)
An imaginary surface extending outward and upward from the periphery of the horizontal surface at a slope of 20 feet horizontally to one foot vertically for a horizontal distance of 4,000 feet. The conical surface zone, as shown on Figure 27-1, is based on the conical surface.
DEPARTMENT
Pennsylvania Department of Transportation.
DWELLING
Any building which is designed for or occupied in whole or in part as the home, residence, or sleeping place of one or more persons, either permanently or temporarily. (See also "double house"; "two-family dwelling (duplex)"; "multiple dwelling/townhouse.")
DWELLING, DOUBLE HOUSE
Dwelling designed for or occupied exclusively by two families with separate entrances for each, but under one roof and with a wall or party wall between, but no interior connection between the two.
DWELLING, MULTIPLE
A dwelling designed for or occupied as a residence for three or more families living independently of one another, including townhouses, and not as a residence for transients.
DWELLING, SINGLE-FAMILY
A separate dwelling designed for or occupied exclusively as a residence for only one family and having no party wall in common with an adjacent building.
DWELLING, TWO-FAMILY (DUPLEX)
A separate dwelling designed for or occupied exclusively as a residence for only two families, with one family living wholly or partly over the other, and having no party wall in common with an adjacent building.
ERECTED/ERECTING
Includes "building," "constructing," "reconstructing," "repairing," "moving," or any physical operations on the land involving a fence, wall, retaining wall, and/or screening; (excavation, fill, drainage, planting, and the like shall be considered part of the erection).
FAA
Federal Aviation Administration of the United States Department of Transportation.
FAMILY
Any two or more persons related by blood or marriage, living together; or one or more persons maintaining wholly or partly other persons, all living together in one household or housekeeping unit.
FENCE/WALL
An artificially created assembly of material such as masonry, stone, wire, metal, screens, wood, block, and/or decorative block or any other manufactured or natural material (i.e., shrubbery) or combination of said materials erected for any purpose, including but not limited to the enclosure of land and/or dividing one piece of land from another. (See also "retaining wall.")
HALF STORY
A story under a gabled, hipped, or gambrel roof, the wall plates of which on at least two opposite exterior walls are not more than two feet above the finished floor of such story.
HEIGHT
The height of a building shall be measured from the top of the foundation wall to the highest point on the main roof. The height of a structure without a roof shall be measured in the same manner to the highest point on such structure, and the height of a structure without a foundation shall be measured in the same manner from the mean level of the ground surrounding the structure. For the purpose of determining the height limits in all zones as relates to Airport Hazard Areas or otherwise in any matter pertaining to the Allegheny County Airport Overlay Zoning District, the datum shall be mean sea level elevation unless otherwise specified.
HORIZONTAL SURFACE (ZONE)
An imaginary plane 150 feet above the established airport elevation that is constructed by swinging arcs of various radii from the center of the end of the primary surface and then connecting the adjacent arc by tangent lines. The radius of each arc is based on the planned approach. The horizontal surface zone, as shown on Figure 27-1, is derived from the horizontal surface.
HOSPITAL
An establishment licensed as such by the Commonwealth of Pennsylvania for the treatment, care and/or supervision of human patients suffering from physical or mental illnesses, and which may or may not include facilities for major surgery. The term "hospital" shall include a general or specialized hospital, including a psychiatric hospital, sanitarium, or similar facility, and shall also include facilities such as an LTSR ("long term structured residence"), RTFA ("residential treatment facility for adults"), EAC ("extended acute care" facility), or other similar treatment and care facilities licensed under the Mental Health Procedures Act or otherwise under the laws of the Commonwealth.
HOUSE TRAILER
Any vehicle used for living or sleeping purposes to which wheels are or at any time have been attached.
LARGER THAN UTILITY RUNWAY
A runway that is constructed for and intended to be used by propeller driven aircraft of greater than 12,500 pounds maximum gross weight and jet powered aircraft.
LOT
The parcel of land on which a principal building, and its accessory building, if any, are placed, together with the required open spaces, having its frontage upon a street. No part of a lot which is also a part of a street, a road, or an alley shall be included in determining the area of the lot for the purposes of this chapter.
LOT, CORNER
A lot abutting upon at least two streets which intersect adjacent to the lot, each of which exceeds 32 feet in width.
LOT, INTERIOR
A lot the side and rear lines of which do not abut upon a street.
LOT, THROUGH
A lot, other than a corner lot, abutting in both the front and rear upon streets each of which exceeds 32 feet in width.
NON-PRECISION INSTRUMENT RUNWAY
A runway having an existing instrument approach procedure utilizing air navigation facilities with only horizontal guidance, or area type navigation equipment, for which a straight-in non-precision instrument approach procedure has been approved or planned.
NONCONFORMING USE
Any pre-existing structure, object of natural growth, or use of land which is inconsistent with the provisions of this chapter or an amendment thereto.
NURSING HOME
A facility licensed to operate as a "nursing home" by the Commonwealth of Pennsylvania for the purpose of providing skilled nursing care or intermediate nursing care and related medical or other health services. The term "nursing home" includes only a licensed institution or facility in which such nursing care and related medical or other related health services are provided for a period exceeding 24 hours, for two or more individuals who are not relatives of the administrator, who are not acutely ill and not in need of hospitalization, but who, because of age, illness, disease, injury, convalescence or physical or medical infirmity, need such care. Without limitation, the term "nursing home" does not include a hospital or a drug or alcohol treatment facility.
OBSTRUCTION
Any structure, growth, or other object, including a mobile object, which exceeds a limiting height set forth by this chapter.
PARKING
Required or permitted paved parking spaces for a use or structure as set forth in this chapter.
PERSONAL CARE HOME
A facility licensed to operate as a "personal care home" by the Commonwealth of Pennsylvania, that is, a facility in which food, shelter and personal assistance or supervision are provided for a period exceeding 24 hours, for four or more adults who are not relatives of the operator, who may require assistance or supervision in activities of daily living or instrumental activities of daily living such as bathing, dressing, diet and medication prescribed for self-administration, but who do not require the services in or of a licensed long-term care facility. Without limitation, the term personal care home does not include a hospital; a skilled nursing or intermediate nursing care or other nursing home facility; a drug or alcohol treatment facility; or any other facility providing skilled or acute care, therapeutic care or treatment, rehabilitation, and/or maintenance by or under the supervision of licensed medical or other health care professionals.
PLACE OF WORSHIP
An institution of any denomination where people regularly observe, practice or participate in religious or spiritual services, meetings and/or activities.
PRECISION INSTRUMENT RUNWAY
A runway having an existing instrument approach procedure utilizing an instrument landing system (ILS) or a precisions approach radar (PAR). It also means a runway for which a precision approach system is planned and is so indicated on an approved airport layout plan or any other planning document.
PRIMARY SURFACE (ZONE)
An imaginary surface longitudinally centered on the runway, extending 200 feet beyond the end of paved runways or ending at each end of turf runways. The elevation of any point on the primary surface is the same as the elevation of the nearest point on the runway center line. The primary surface zone, as shown on Figure 27-1, is derived from the primary surface.
PRIVATE GARAGE
That integral or attached part of a dwelling which is used or designed for use as storage space for not more than two motor vehicles.
PUBLIC GARAGE
A building not a private or storage garage, used for the storage and repair of vehicles.
RETAINING WALL
Any artificially constructed barrier as defined in the preceding paragraph intended to reinforce, cover, and/or border exposed or elevated earth surface.
RUNWAY
A defined area of an airport prepared for landing and takeoff of aircraft along its length.
SATELLITE DISH ANTENNA
A device incorporating a reflective surface that is solid, open mesh, or bar configured and is in the shape of a shallow dish, cone, horn, or cornucopia. Such a device shall be used to transmit and/or receive radio or electromagnetic waves between terrestrially- and/or orbitally-based uses. This definition is meant to include, but not be limited to, what are commonly referred to as satellite earth stations, TVROs (television reception only satellite dish antennas), satellite microwave antennas, and parabolic dish antenna.
SCHOOL, COMMERCIAL
A privately operated, for-profit educational facility or like establishment providing non-academic training, or training or educational courses or programs in technical or skilled trades, vocations, avocations, business, or other similar pursuits.
SCHOOL, PUBLIC OR PRIVATE
An educational facility which is an institution of learning operated by a public, private or religious organization, having regular sessions, with regularly employed instructors, meeting all of the requirements of and accredited by the Pennsylvania Department of Education for providing primary/elementary or secondary level instruction, or for providing associate, bachelor or higher level degrees of post-secondary education in the several branches of learning required by the Commonwealth of Pennsylvania. (This definition shall not include a "commercial school.")
SCREENING
Any planting, light fence/wall related material and/or movable material placed for the purpose of enclosing land and/or dividing one piece of land from another.
SIGN
Any structure or part thereof on which lettered or pictorial matter is displayed for advertising or notice purposes, and in computing the size of any sign, the entire surface of such structure or part thereof in the same plane as such lettered or pictorial matter shall be included.
SPECIAL EXCEPTION
The permission or approval granted by the Zoning Hearing Board in situations where provision therefor is made by the terms of this chapter.
STORAGE GARAGE
A building not a private garage, used for the storage only of vehicles.
STORY
That part of any building between any floor and the floor or roof next above, except that the first story of any building is the lowest story for which the outside walls are 75% or more above the average level of the ground adjacent to such outside walls.
STREET
Any street, avenue, boulevard, road, highway, freeway, parkway, alley, viaduct, and any other paths used by or intended to be used by vehicular traffic and pedestrians which has been dedicated and accepted by the Township of Baldwin.
STRUCTURAL ALTERATION
Any change in the supporting members of a building or structure, such as bearing walls, columns, beams or girders.
STRUCTURE
Any building or other man-made object having an ascertainable stationary location on or in land or water, whether or not affixed to the land, including anything constructed, assembled, or erected on or under the ground or upon another structure or building; and shall also include any mobile or immobile object constructed or installed by man, including, but without limitation, towers, cranes, smokestacks, earth formations, and overhead transmission lines.
TELEPHONE CENTRAL OFFICE
A building and its equipment erected and used for the purpose of facilitating transmission and exchange of telephone messages between subscribers and other business of the telephone company, provided that in a residential district, a telephone central exchange shall not include public office facilities, storage of materials, trucks, or repair facilities, or housing of repair crews. The plans for the design and construction of said buildings shall be submitted to the Board of Township Commissioners for approval, and shall be in keeping with the general architectural design of other buildings in the neighborhood.
TRAILER CAMP
Any premises used or designed to be used as a parking space for more than one house trailer.
TRANSITIONAL SURFACE (ZONE)
An imaginary surface that extends outward and upward from the edge of the primary surface to the horizontal surface at a slope of seven feet horizontally to one foot vertically. The transitional surface zone, as shown on Figure 27-1, is derived from the transitional surface.
TREE
Any object of natural growth.
UTILITY RUNWAY
A runway that is constructed for and intended to be used by propeller driven aircraft of 12,500 pounds maximum gross weight or less.
VISUAL RUNWAY
A runway intended solely for the operation of aircraft using visual approach procedures.
YARD
An open space on a lot which is unoccupied and unobstructed from the ground upward.
YARD (FRONT)
An area of open space extending along the full length of a lot between the front lot line and the required building line.
YARD (REAR)
The required open space existing between the rear building line and the rear lot line (not necessarily a street) throughout the entire width of the lot.
YARD (SIDE)
A required open space extending from between the structural setback line and the side lot line throughout the entire depth of the yard. Any lot line not a rear line or a front line shall be deemed a sideline.
ZONING OFFICER
Any person who shall be appointed by the Board of Township Commissioners from time to time to be the administrator of the day to day application of the provisions contained in this chapter.