Understanding Pipe Grade Calculations

The video tutorial explains the concept of total fall in grade, detailing how to calculate it using different methods such as percent, ratio, and inches per foot. It introduces a formula involving three variables and demonstrates its application through examples. The tutorial also covers an advanced example of finding the grade in percent form, emphasizing the importance of unit consistency in calculations.

What is the primary purpose of calculating the total fall in grade for a drainage pipe?

• To reduce the cost of materials

• To increase the pipe's lifespan

• To allow contents to drain by gravity

• To ensure the pipe is aesthetically pleasing

Which of the following is NOT a way to express grade?

• Percent

• Ratio

• Inches per foot

• Meters per second

If a pipe has a grade of 2%, what does this mean in terms of its fall over a certain distance?

• The pipe falls 2 meters for every 50 meters traveled

• The pipe falls 2 centimeters for every 1 meter traveled

• The pipe falls 2 inches for every 10 feet traveled

• The pipe falls 2 feet for every 100 feet traveled

In the ratio method of expressing grade, what does a ratio of 1 in 50 imply?

• All of the above

• The pipe falls 1 meter for every 50 meters traveled

• The pipe falls 1 inch for every 50 inches traveled

• The pipe falls 1 foot for every 50 feet traveled

Which method of expressing grade is most common in the plumbing trade?

• Meters per kilometer

• Percent

• Ratio

• Inches per foot

What is the formula to calculate the length of a pipe if the total fall and grade are known?

• Total fall divided by grade

• Total fall multiplied by grade

• Grade divided by total fall

• Grade multiplied by total fall

How can the triangle method be used in calculating pipe grade?

• By using it to solve for any of the three variables: total fall, length, or grade

• By using it to determine the pipe's diameter

• By using it to calculate the pipe's material cost

• By using it to find the pipe's color

In the example calculation, what is the total fall for a pipe with a 2% grade over 200 feet?

• 2 feet

• 4 feet

• 8 feet

• 6 feet

When using the ratio method, how is the total fall calculated for a 200-foot pipe with a 1 in 50 grade?

• 50 divided by 200

• 50 multiplied by 200

• 200 multiplied by 50

• 200 divided by 50

In the inches per foot method, what is the total fall in inches for a 200-foot pipe with a quarter inch per foot grade?

• 50 inches

• 200 inches

• 100 inches

• 150 inches