SPECIFICATION: 2-Car Detached Garage, Pole Barn Floor, Workshop
24×24 Detached Garage Slab Calculator
A 24×24 garage slab covers 576 square feet. At a standard 6-inch structural vehicle depth, it requires 10.67 net cubic yards (11.73 cubic yards with 10% waste). This requires two ready-mix mixer truck dispatches and approximately 17 tons of compacted #57 crushed limestone sub-base.
SLAB DIMENSIONS576 SQ FT
THICKNESS (INCHES)6" Depth
+10%
DIY Retail Bag Weight:
Live Structural Cross-Section
24' × 24' Slab (6" Depth)Net Volume:10.67 cu yds
Order (+Waste):11.74 cu yds
Base Prep:6" Crushed Base
Reinforcement:#4 @ 12" O.C.
Yield Comparison (24' × 24')
DIY RETAIL STORE PICKUP
529 Bags
80 lb bags (~13 full pallets)
Dry Weight:42,320 lbs
Est. Bag Cost:$3,439
COMMERCIAL READY-MIX
11.74 cu yds
2 mixer truck (4000 PSI)
Delivery Scale:Recommended for Ready-Mix
Est. Ready-Mix:$1,820
Frequently Asked Questions: 24×24 Detached Garage Slab Calculator
How many yards of concrete for a 24x24 garage slab at 6 inches?
A 24x24 slab at 6" thickness requires 11.73 cubic yards of concrete including a 10% waste factor.
How many concrete trucks is 12 yards?
Most standard ready-mix trucks carry between 9 and 10 cubic yards to remain within legal highway weight limits (80,000 lbs GVW). An 11.73-yard pour will be scheduled as two trucks (e.g., 8 yards on truck 1, balance on truck 2).
How much crushed stone base is needed under a 24x24 slab?
A 6-inch compacted gravel base under a 24x24 slab requires approximately 17 tons of #57 crushed limestone or crusher run.