If a runway is 180 ft wide, the overall width of the threshold markings shall be how many feet less than the runway width?

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Multiple Choice

If a runway is 180 ft wide, the overall width of the threshold markings shall be how many feet less than the runway width?

Threshold markings are placed across the runway width with a uniform margin from each edge. The standard margin from the edge to the edge of the marking is 10 feet on each side, so the total width occupied by the threshold markings is the runway width minus 20 feet. With a runway 180 feet wide, the markings would span 160 feet. This arrangement leaves 10 feet of unmarked runway on each side, ensuring symmetric placement and readability of the marks.

Threshold markings are placed across the runway width with a uniform margin from each edge. The standard margin from the edge to the edge of the marking is 10 feet on each side, so the total width occupied by the threshold markings is the runway width minus 20 feet. With a runway 180 feet wide, the markings would span 160 feet. This arrangement leaves 10 feet of unmarked runway on each side, ensuring symmetric placement and readability of the marks.

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