Formulas
total fall in inches divided by the distance in feet
What is the formula for the grade of a drain line?
A closed curve all of whose points are on the same plane.
What is a circle?
The opposite of addition
What is subtraction?
Total fall divided by distance
What is percent grade?
When two lines join to form a 90° angle
What is a perpendicular line?
Separates a whole number from its parts.
What is a decimal point?
9 x ? = 108
What is 12?
Two straight lines in a plane that do not intersect
What are parallel lines?
Addition, subtraction, multiplication and division
What are the building blocks of math?
9 = 81 / ?
What is 9?
The single straight lines on a piping drawing
What is the center line of a pipe?
L = A/W
What is the formula for area?
8 x (4+3) / 8 = ?
What is 7?
The intersecting lines on a piping drawing.
P = W/A
What is the formula for pressure?