1 Ton = 2000 lbs. 
1 Cubic Yard of sand weighs 2800 lbs. 
1 Cubic Yard of rock weighs 3000 lbs. 
1 Yard of concrete weighs about 4000 lbs. 

To calculate Cubic Yards Needed, multiply length x width x depth and the divide by 27. All dimensions must be in feet. 

9 to 10 wheelbarrows per yard of concrete.

Coverages – One Cubic Yard Will Cover:
Depth 2"  3"  4"  5"  6"  8"  12"	Sq. Foot Coverage 160  108  80  65  54  40  27

Concrete Calculator

Mixing Concrete by Hand:
(3-2-1) 3 Shovels of rock, 2 sand, 1 cement 

To make one yard of concrete you need approximately:

Sidewalk	1800 # of rock	1200 # of coarse sand	6 bags of Types IA cement
Footing Concrete	1900 # of rock	1400 # of coarse sand	5 bags of Type I cement
Exposed aggregate Patio Mix	2200 # of rock	800 # of coarse sand	6 bags of Types IA cement
Ground Mix		2800 # of coarse sand	8 bags of Type I cement

 

Stucco – typically 3 coats

1st Coat
2nd Coat
3rd Coat

Scratch coat
Use Type M or S mortar with sand

Brown coat
Use Type M or S mortar with sand

Finish coat
White Portland – see formula below

Finishing Formula

• 1 Bag White Cement 
• 2 Bags Silica Sand 
• 1/3 Bag of Lime

All mixes above are 3 parts sand to one part cementitious. 
Portland cement has one cubic foot per bag. 
There are about 7.5 gallons in a cubic foot. 
 

Cold Weather Guidelines
32° to 40° F	Heat water to produce mortar at or above 40° F.
0° to 32° F	Heat water and sand to produce mortar at 40° to 120° F and keep above freezing until used.
Below 0° F	Masonry work generally should not be attempted

Premix Products

• Each 60-lb. bag of concrete or sand mix covers 1/2 cubic foot 
• 54 bags are need for one cubic yard 
• 1 bag of mortar will lay about 12-15 blocks

• 1 yard of grout will fill: 
• 100 8x8x16 common block 
• 60 12x8x16 common block 
   

  1 core, 12 courses high requires 2.5 cubic feet – so 1 yard of grout will fill 10 cores on a 12 course basement wall.

• Footings must be at least 42" below grade in Metro area. 
• 12" block require a minimum of 8" x 20" footings – 24 feet of footing per yard. 
• 8" block require a minimum of 8" x 16" footings – 30 feet of footing per yard of concrete.

• Square feet divided by 80 gives yardage required for 4" thick slabs. Add at least 10% for orders less than five yards.