Pre-Calculated Specs for a 10×4 Concrete Slab (4" Depth)
front entry sidewalk, side garden pathway, or hot tub access path80 lb Bags Needed25 bagsincl. 10% waste
Total Volume0.54 yd³14.7 cu ft
Sub-Base Gravel0.57 yd³~31 bags (50 lb)
#4 Rebar Needed~65 ft18" on-center grid
Expert Contractor Recommendation: Small volume (25 bags / 0.54 yd³). Pre-mixed bags from the hardware store are much cheaper than minimum truck load fees.
Engineering Considerations for 10×4 Pours
A 10×4 slab covers exactly 40 square feet. This size is commonly used for a front entry sidewalk, side garden pathway, or hot tub access path. At 0.54 cubic yards, this is an approachable DIY project that can be completed over a single weekend with a rented mechanical drum mixer.
| Bag Size | Total Bags Needed | Combined Dry Weight | Estimated Material Cost |
|---|---|---|---|
| 80 lb bag | 25 bags | 2,000 lbs (907 kg) | $145 - $188 |
| 60 lb bag | 33 bags | 1,980 lbs (898 kg) | $162 - $211 |
| 50 lb bag | 40 bags | 2,000 lbs (907 kg) | $170 - $220 |
| 40 lb bag | 49 bags | 1,960 lbs (889 kg) | $176 - $235 |