The boundaries of the zoning districts shall be as shown on the Official Zoning Map of the Township. The Official Zoning Map and all notations, references and data shown thereon are hereby incorporated by reference into this Part 1.[1]

The Official Zoning Map shall be so labeled and identified by the signature of the Chairman of the Board of Supervisors, attested by the Secretary of the Board of Supervisors, and bear the seal of the Township under the following words:

"This is to certify that this is the Official Zoning Map of the Township of Upper Tulpehocken adopted March 13, 2001."

If an amendment is made to the Official Zoning Map, an entry indicating the change made and the date of any change shall be made on the map and the entry shall include the signatures of the Chairman and Secretary of the Board of Supervisors.

In the event that the Official Zoning Map becomes damaged destroyed, lost or difficult to interpret by reason of the nature and number of changes and additions made thereon, the Board of Supervisors may by resolution adopt a new Official Zoning Map which shall supersede such prior map. The new Official Zoning may correct drafting or other errors or omissions in the prior Official Zoning Map, but no such correction shall have the effect of amending the original Official Zoning Map or any subsequent amendment thereof. The new Official Zoning Map shall be identified by the signature of the Chairman of the Board of Supervisors, attested by the Secretary of said Board, and bear the seal of the Township under the following words:

"This is to certify that this is the Official Zoning Map of the Township of Upper Tulpehocken adopted March 12, 2001."

Where district boundaries are indicated as approximately coinciding with the center lines of streets, highways or alleys, such center lines shall be construed to be such boundaries.

Where district boundaries are indicated as approximately coinciding with plotted lot lines, such lot lines shall be construed to be such boundaries.

Where district boundaries are indicated as being approximately parallel to the center line of, or to the right-of-way lines of, streets or highways, such district boundaries shall be construed as being parallel to the center line of, or to the right-of-way lines and at such distance from the center line of, or to the right-of-way lines as is indicated on the Official Zoning Map. Distances not specifically indicated on the Official Zoning Map shall be determined by the scale of the map.

Where district boundaries are indicated as being approximately perpendicular to the center lines of, or to the right-of-way lines of streets or highways, such district boundaries shall be construed as being perpendicular to the center lines of, or to the right-of-way lines.

Boundaries indicated as approximately following Township limits shall be construed as following such limits.

Boundaries indicated as parallel to or extensions of features indicated in Subsections A through E above shall be so construed.

Where physical or cultural features existing on the ground are at variance with those shown on the Official Zoning Map, or in other circumstances not covered by Subsections A through F above, the Zoning Officer shall interpret the district boundaries.

Where a district boundary line divides a lot which was in single ownership at the effective date of this Part 1, at the election of the property owner the regulations of either zoning district may be extended a distance of not more than 50 feet beyond the district boundary line into the remaining portion of the lot.

No building, structure or land shall be used or occupied and no building, structure or part thereof shall be erected, constructed, assembled, moved, enlarged, reconstructed or structurally altered without the issuance of a zoning permit and/or certificate of use and occupancy by the Zoning Officer.

No part of a yard, other open space or off-street parking or loading space required in connection with one structure, building or use of the land shall be included as part of a yard, open space or off-street parking or loading space similarly required for any other structure, building or use of the land except as permitted or required by this Part 1 or other Township ordinance or regulations.

No yard or lot existing at the time of passage of this Part 1 which meets the requirements of this Part 1 shall be reduced in dimension or area below the minimum requirements set forth in this Part 1. A yard or lot existing at the time of passage of this Part 1 which does not meet the minimum requirements of this Part 1 shall not be further reduced below the minimum requirements of this Part 1.

Where district regulations specify a minimum lot width at the street line, the minimum lot width shall be contiguous along one street line. It is prohibited, when calculating the width of a lot, to add widths along two street lines. (See "lot width.")

Where district regulations specify a minimum lot width at the building setback line, the minimum lot widths shall be contiguous along one building setback line. It is prohibited, when calculating the width of a lot, to add widths along two building setback lines. (See "lot width.")