Concrete Calculator
Calculate concrete volume, materials needed, and cost for your construction project
Project Details
Materials Needed
Concrete Volume4.9 cubic yards
Total volume of concrete needed
80lb Concrete Bags36
Number of 80lb bags if mixing yourself
60lb Concrete Bags48
Number of 60lb bags if mixing yourself
Sand Needed7.4 cubic yards
Amount of sand for mixing
Gravel Needed9.9 cubic yards
Amount of gravel for mixing
Estimated Cost$617.00
Approximate cost for ready-mix concrete
Understanding Concrete Mixtures
Concrete is a mixture of cement, water, sand (fine aggregate), and gravel (coarse aggregate). The proper ratio of these materials is crucial for achieving the desired strength and durability.
Standard Mix Ratios
- • 1 part Portland cement
- • 2 parts sand
- • 3 parts gravel
- • 0.5-0.6 parts water
Strength Factors
- • Water-cement ratio
- • Aggregate quality
- • Curing conditions
- • Mix consistency
Project Planning Tips
Site Preparation
- • Clear and level area
- • Compact soil properly
- • Install proper forms
- • Add gravel base if needed
- • Check drainage
Weather Considerations
- • Ideal temp: 50-85°F
- • Avoid freezing conditions
- • Protect from rain
- • Consider wind effects
- • Plan for curing time
Tools Needed
- • Wheelbarrow
- • Shovel and rake
- • Float and trowel
- • Edger tool
- • Safety equipment
Common Applications & Specifications
Recommended Thicknesses
Sidewalks: 4 inches
Driveways: 4-6 inches
Patios: 4 inches
Garage Floors: 4-6 inches
Foundation Walls: 6-8 inches
Reinforcement Guidelines
Wire Mesh: For crack control in slabs
Rebar: For structural strength
Fiber: For added durability
Spacing: 12-18 inches typically
Coverage: 2-3 inches minimum
Cost Considerations
Material Costs
- • Ready-mix concrete
- • Reinforcement materials
- • Forms and stakes
- • Finishing tools
- • Curing compounds
Labor Considerations
- • Site preparation
- • Form setup
- • Concrete placement
- • Finishing work
- • Cleanup
Additional Expenses
- • Permits
- • Equipment rental
- • Site access
- • Waste disposal
- • Weather protection