https://roughestimatecalc.com 2026-08-08T20:15:31.055Z monthly 1 https://roughestimatecalc.com/methodology 2026-08-08T20:15:31.055Z yearly 0.5 https://roughestimatecalc.com/gravel 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/crushed-stone 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/sand 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/mulch 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/topsoil 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/concrete-slab 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/concrete-footing 2026-08-08T20:15:31.055Z monthly 0.8 https://roughestimatecalc.com/concrete-post-hole 2026-08-08T20:15:31.055Z monthly 0.8