Home › Civil Engineering › Excavator vs Manual Excavation Excavator vs Manual Excavation: Cost & Time Comparison Last Updated: August 9, 2026 | Next Review: February 2027 A mini excavator can dig a 20-bank-cubic-yard trench in roughly two hours of digging time. A 3-person crew with shovels needs closer to 11 crew-hours, about a day…

Concrete Slab Cracking: Causes and How to Prevent It Written by the Solvebility Editorial Team · Last updated August 7, 2026 · 12 min read Reviewed by a licensed civil engineer on the Solvebility Review Board. See our Editorial Policy. A cracked concrete slab in the first year isn’t rare. Most driveways, garage floors, and…