The Sheet

1. The length of the sheet from back board to back board shall be 146 feet (44.501 meters). The width of the sheet from sideline to sideline shall be 14 feet 2 inches (4.318 meters). This area shall be delineated by lines drawn or dividers placed on the perimeter.
2. At each end of the sheet there shall be three distinct lines drawn from sideline to sideline as follows
   1. each tee line, one-half inch in width, shall be placed 16 feet (4.877 meters) from the back board to the center of the tee line and there shall be 114 feet (34.747 meters) from the center of one tee line to the center of the other tee line. The intersection of the tee line and the center line is called the tee.
   2. each backline, one-half inch in width, shall be placed with its outer edge 6 feet 1/2 inch (1.842 meters) from the center of the tee line, so that the inner (circle side) edge just touches the outer edge of a circle 6 feet from the tee.
   3. the hog line, 4 inches (10.16 centimeters) in width, shall be placed with the inner (circle side) edge 21 feet (6.401 meters) from the center of the tee line.
3. The center line, one half inch in width, shall be placed the length of the sheet through the center of the tee lines to a point 12 feet (3.658 meters) behind each tee. At this point, lines of 1 foot 6 inches (45.72 centimeters) in length shall be placed at right angles to the center line and shall be known as the hack line. The inside (circle side) edge of the hack boards shall be placed on this hack line.
4. With each tee as center, there shall be drawn four concentric circles at each end with the outer edge of the outer circle having a radius of 6 feet (1.829 meters), the next circle 4 feet (1.219 meters), the next circle 2 feet (60.96 centimeters) and the inner circle a minimum of 6 inches (15.24 centimeters). The marking of the center line and tee line may be omitted from the inner circle.
5. The intersection of each tee line and each center line shall be identified by an adjustable tee center. The base portion shall be securely anchored at the exact intersection of the tee line and center line of each house, and the top portion should be capable of vertical adjustment to suit varying ice levels.
6.  The back edge of the hack(s) shall be placed on the hack line in such a manner that the inside edge of the hack(s) is no further than 3 inches (7.62 centimeters) from the center line. The hack(s) shall not exceed 8 inches (20.32 centimeters) in length.
7. The diagram herein shows the proper layout of the sheet in accordance with the measurements in this section.