These are the three most common financial pain points we see in this situation -- and the ones that do the most damage when they go unaddressed.
The cut-fill balance is estimated at bid. Site conditions, design revisions, and survey discrepancies mean actual quantities almost always diverge from estimates. Without weekly quantity tracking, you don't know by how much until the last load leaves.
Grading plan revisions, pad elevation changes, and drainage design modifications all change the earthwork quantity. When these run as informal field adjustments rather than formal change orders, the extra work gets absorbed into the lump-sum contract and the margin disappears.
The original estimate assumed a balanced site. By Week 4 it's clear there's excess material that needs hauling off-site -- or a shortage requiring import. Neither was in the budget. Without cost-to-complete tracking by earthwork category, the magnitude of the overrun is invisible until the final trucking bill arrives.
SPM builds these systems through ControlQore during the first 30-60 days of onboarding -- then maintains them monthly so the numbers are always current and actionable.
The most common causes: design changes after bid that aren't captured as change orders, survey discrepancies between the design model and existing conditions, soil classification differences (rock vs. earth) that weren't identified in the geotechnical report, and compaction factor assumptions that don't match field conditions.
Weekly quantity surveys compared to the bid takeoff. Actual cut and fill volumes tracked by phase -- rough grade, structure excavation, fine grade -- against estimated quantities per phase. When actual quantities run 10%+ over estimate, a cost-to-complete recalculation should trigger immediately.
Any time a design revision, changed site condition, or owner-directed change increases or decreases earthwork quantities from what was included in the original bid. Informal field direction from the GC doesn't waive your right to a change order -- but you need to document the trigger and submit a PCO the same week.
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