Material Estimating Guides

Step-by-step guide to estimating gravel for driveways, paths, drainage, and base layers. Covers the volume formula, depth chart, and how material density converts cubic yards to tons.

Recommended base and surface layer depths, gravel type comparison (crushed stone vs. pea gravel vs. bank run), and a worked 50×16 ft driveway example with tonnage estimate.

4-inch, 6-inch, and 8-inch scenarios with when to use each. Covers light-vehicle vs. heavy-vehicle requirements, base vs. cap stone layers, and compaction notes.

2026 material cost estimates by driveway size, gravel type, and depth. Covers material-only pricing, delivery, and grading for both DIY and contractor-installed projects.

Exact cubic yard volumes and 60 lb / 80 lb bag counts at 4, 5, and 6 inch depths. Includes overage recommendations and a side-by-side ready-mix vs. bags comparison for this slab size.

Project-size breakpoints, cost-per-cubic-yard comparison, full bag count table, and a practical decision guide for when ordering a ready-mix truck becomes the better choice.

Coverage calculations at 1, 2, 3, and 4 inch depths. Bulk cubic yards vs. bag-count comparison, sample bed examples, and tips for ordering the right amount without over-buying.

Recommended depths by plant type — flower beds, trees, shrubs, vegetable gardens, and weed-suppression applications. Explains why mulching too thick can harm established plants.

Depth guidance for new lawns, sod installation, raised beds, garden amendments, and grading. Includes settling allowance notes and a comparison of screened vs. unscreened topsoil.

Bedding sand depth recommendations, joint sand coverage, above-ground pool base, and sandbox fill. Includes a 10×20 ft patio example and a bags vs. bulk cost comparison.

Coverage chart by rock type and depth, density comparison between river rock, lava rock, and decomposed granite, and a worked 10×15 ft bed example with tonnage estimate.

Density reference table for gravel, sand, topsoil, asphalt, mulch, and more. Worked conversion examples and a plain-language explanation of why material density is required to convert between weight and volume.