Math is a part of trade jobs, and the plumber's trade is no exception. In fact, basic math and several forms of advanced math may be used by plumbers working out in the field or in the office.

Why Math?

A good plumber not only uses his hands, he uses his mind. In fact, he spends much of his time troubleshooting problems with water pipes, plumbing fixtures and appliances. Many plumbers are familiar with how to read a blueprint, and have even studied a little bit of chemistry and bacteriology---but they also need to know math. Algebra and geometry are especially important when it comes to layouts on the job, and basic math also comes in handy when a job calls for measuring.

The 45-Degree Formula

It is essential that every plumber knows how to connect two pieces of pipe. Math will play an important role in getting this job done, so it is important for plumbers to understand a set of math procedures known as the 45-degree formula. Plumbers-School.com explains that the 45-degree formula takes the center measurement between the two pipes and multiplies it by the constant 1.414. The length of the two fittings is then subtracted from the original answer. However, there is a stipulation. In order to accurately complete the measurement, the plumber must also know how to convert a fraction to a decimal.

Measuring

A plumber must know how to measure. Whether he will be measuring a length of pipe or measuring for a fitting, it will be important to understand how to convert a decimal into a fraction. The plumber's ruler utilizes inches and when doing conversions it will be necessary to take a measurement such as 1 ½ inches and convert it to a decimal; which in this case would be 1.5 inches.

Area

A plumber should also know how to measure the area of a water tank. According to Plumbing Help.ca, some of the formulas used to measure area may include the area of a circle, which is determined by the formula Area = diameter x diameter x .7854, as well as the surface area of a sphere which is calculated by using the formula Area = diameter x diameter x 3.1416.

Hydraulic Calculations

In the book "Plumber's Exam Preparation Guide," author Howard C. Massey explains that hydraulic calculations are also important mathematical procedures that are used by plumbers. Hydraulic calculations include volume, which is measured in cubic units and pressure; measured in pounds per inch. Velocity is also a hydraulic measure, calculated in distance and time.

Don't Forget the Charges

In order to get paid, a plumber must know how to calculate his hourly rate times the amount of hours that he worked. The Educations Resource Center reports that this can be done by using a simple math equation which looks something like this: $25/hr x 2 hours= $50 total labor cost.

Source:

Plumbers-School.com

Plumbing Help.ca

Plumber's Exam Preparation Guide

Resource:

The Educations Resource Center

How a fat one fits into a wet zero...... though that's the kind of math that causes multiples if done wrong.......

Here's a few of the things you'll need to know in order to pass the plumbing exam. Volume of various Objects - Cylinder, sphere, rectangular, frustum Converting decimals to fractions Pipe size capacity ratio Area of objects Simple pipe offsets Rolling pipe offsets Jumper Offset Head pressure Thermal expansion Specific gravity Pressure Roof drain hydraulic load calculations Finding grade using a Philadelphia rod and transit And of course the complicated math involved in determining how to cover plumber's crack