I started running 48-hour look-aheads just for dirt work. On the 92,000-sf community center pad, two 30-ton excavators and a D6 were drifting off plan because trucking didn’t line up and utilities popped up late. We were bleeding 40–50 minutes a morning while iron idled. Last Tuesday at 6:45 a.m. by grid C5, the Cat 320 sat humming while we waited for a water line locate; that was my pivot. Now I block the day in one-hour windows in P6 and mirror it on the trailer whiteboard: 18 export loads by 3:00 p.m., dozer first finish at 4:30, trench crew in at 2–3. Telematics shows idle under 12 minutes per machine, and we clawed back 2 days in one week. Bottom line: micro-scheduling the excavators to feed the dozer, not the other way around, keeps the critical path moving.
I started a 6:30 trucker/dispatcher huddle and built a 20‑minute utility buffer right after startup. If a locate stalls, the D6 jumps to preset filler work (dress ramps, widen turnouts) and one 320 slides to stockpile pulls so you keep iron moving without nuking the plan.
Truck gaps and late locates were killing us too, so we parked one dedicated site truck as a swing buffer and built a 250‑yd surge pile within 200 ft of the cut. If dispatch or a locate stalls, the 320 loads the pile and the D6 trims off it, then we burn the pile down once trucks catch up.
Killed that 6:45 idle by daylighting next‑day crossings with a small vac crew at 6:00; if C5 isn’t green by 6:40, the 320 slides to a surge pile and the D6 does 30‑min ramp/ditch touch‑ups. Also staggered truck call‑times so the first dump lands 7:05 — iron doesn’t sit anymore.