Expand mobile version menu

House and Structural Mover

Real-Life Activities

Real-Life Math -- Solution

As the foreman of a moving crew, you are responsible for overseeing the safe move of various structures.

Since you live in an area that borders on the sea, you are sometimes asked to move marine vessels, or to use marine vessels to move other structures. This typically requires that you be able to perform basic mathematical calculations accurately and rapidly while you are on the job.

This morning, for instance, your crew has been sent to move a 90-ton submarine. You must jack the vessel up in the air, fit dollies under it and truck it to a barge. To do this, you will have to know the circumference and area of the vessel.

The submarine has a diameter of 12 feet. What is the circumference? What is the area?

The formula to calculate circumference ispi.gifx diameter.

Circumference = pi x 12 feet
Circumference = 3.14 x 12 feet
Circumference = 37.68 feet

Area

The formula to calculate area ispi.gifr2.

The diameter is twice the radius (D = 2r). Therefore, the radius of the submarine is 12 / 2 = 6 feet.

Area = 3.14 x (6 x 6)
Area = 3.14 x 36
Area = 113.04 square feet

"Some moves are complicated enough that you have to consult with structural engineers before attempting the move," says mover Murray Nickel.