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VOLUME CALCULATIONS
Volume of a
Rectangular Container
What is the volume of a container 3 feet by 1 foot 9-5/8 inches by 2 feet 4 inches?
COMMENTS
Clear calculator
Enter length
Multiply by width
KEYSTROKES
[On/C] [On/C]
3 [Feet]
[x] 1 [Feet] 9 [Inch]
Multiply by depth
5 [/] 8
[x] 2 [Feet]
4 [Inch] [=]
Answer: 12.61458 CU FT
Convert to Meters [Conv] [M]
Answer: 0.357207 CU M
Volume of a Cylinder
You want to calculate the circumference and volume of a cylinder with a diameter 2 feet 4 inches and a height of 4 feet 6 inches.
COMMENTS
Clear calculator
KEYSTROKES
[On/C] [On/C]
Step 1 — Find circumference and surface area of circle
Enter diameter
Find circumference
Find circle area
2 [Feet] 4 [Inch]
[Circ]
Answer: 7 FT 3-31/32 IN
[Circ]
Answer: 4.276057 SQ FT
Step 2 — Multiply for Volume
Multiply by height [x] 4 [Feet] 6 [Inch] [=]
Answer: 19.24226 CU FT
User’s Guide — 27
Simple Concrete Volume
You’re going to form up and pour your own driveway and you need to calculate the cubic yards of concrete required for the job accurately.
The measurements are as follows: 36 feet 3 inches by 11 feet 6 inches by 4 inches deep. What’s the volume of your driveway, and if concrete costs $55 per yard, how much will your driveway cost you?
COMMENTS
Clear calculator
KEYSTROKES
[On/C] [On/C]
Step 1 — Find Volume
Enter length
Multiply by width
Multiply by depth
36 [Feet] 3 [Inch]
[x] 11 [Feet] 6 [Inch]
[x] 4 [Inch] [=]
Answer: 138.9583 CU FT
Convert to cu. yards [Conv] [Yds]
Answer: 5.146605 CU YDS
Step 2 — Multiply by Cost
Mult. by price per yard [x] 55 [Per]
Answer: $283.0633
Complex Concrete Volume
You’re going to pour an odd-sized patio 4-1/2 inches deep with the dimensions shown below.
First, calculate the total area (by dividing the drawing into three individual rectangles) and then determine the total yards of concrete required for this job.
28 — Construction Master III
®
27’ 0”
A
B
8’ 6”
C
9’ 0”
COMMENTS
Clear calculator
KEYSTROKES
[On/C] [On/C]
Step 1 — Find Area of Part A
Find length 38 [Feet] 2 [Inch] [–]
4 [Feet] 2 [Inch] [=]
Answer: 34 FT 0 IN
Multiply by width [x] 27 [Feet] [=]
Answer: 918 SQ FT
Enter in Memory [M+]
Step 2— Find Area of Part B
Enter length
Multiply by width
4 [Feet] 2 [Inch]
[x] 8 [Feet]
6 [Inch] [=]
Answer: 35.41667 SQ FT
Add to Memory [M+]
Step 3— Find Area of Part C
Enter length of C
Multiply by width
Add to Memory
9 [Feet]
[x] 9 [Feet] 6 [Inch]
[=]
Answer: 85.5 SQ FT
[M+]
(continued on next page)
User’s Guide — 29
Step 4 — Find Total Area
Recall Memory [Rcl] [Rcl]
Answer: 1038.917 SQ FT
Multiply by depth [x] 4 [Inch] 1 [/] 2 [=]
Answer: 389.5938 CU FT
Convert to yards [Conv] [Yds]
Answer: 14.4294 CU YDS
Concrete Columns
You’re going to pour five columns, each of which has the following dimensions: Diameter 3 feet 4-1/2 inches, height 11 feet 6 inches. How many cubic yards of concrete will you need for all five columns?
COMMENTS
Clear calculator
KEYSTROKES
[On/C] [On/C]
Step 1 — Find Surface Area of Column
Enter diameter 3 [Feet]
Find surface area
4 [Inch] 1 [/] 2
[Circ] [Circ]
Answer: 8.946177 SQ FT
Step 2 — Find Volume
Multiply by height [x] 11 [Feet]
6 [Inch] [=]
Answer: 102.881 CU FT
Convert to yards [Conv] [Yds]
Answer: 3.810409 CU YDS
Multiply by 5 columns [x] 5 [=]
Answer: 19.05204 CU YDS
30 — Construction Master III
®
Single Concrete Footing
Find the number of cubic yards of concrete required for a (16” x 8”) footing that measures 32 feet 7 inches in length.
COMMENTS
Clear calculator
Enter length
Multiply by width
KEYSTROKES
[On/C] [On/C]
32 [Feet] 7 [Inch]
[x] 16 [Inch]
Multiply by depth [x] 8 [Inch] [=]
Answer: 28.96296 CU FT
Convert to yards [Conv] [Yds]
Answer: 1.072702 CU YDS
Multiple Footings
Find the total volume of concrete required to pour five 24” x 12” footings, each 2 feet deep.
COMMENTS
Clear calculator
KEYSTROKES
[On/C] [On/C]
Step 1 — Find Volume for One Footing
Enter length 2 [Feet]
Multiply by width
Multiply by depth
[x] 24 [Inch]
[x] 12 [Inch] [=]
Answer: 4 CU FT
Convert to yards [Conv] [Yds]
Answer: .148148 CU YDS
Step 2 — Find for All 5 Footings
Multiply by 5 footings [x] 5 [=]
Answer: 0.740741 CU YDS
NOTE: To calculate the Cubic Volume of other dimensioned geometric shapes, see Appendix B.
User’s Guide — 31
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