Typical 1–2%. Computed from civil subtotal (excl. bonding).
FIRE SUPPRESSION ▼
Auto: calculating…
HELICAL PIERS — EQUIPMENT (POOR SOIL) ▼
Use in soft soils (N60 < 10) where conventional spread footings are impractical. Light equipment pads only — BESS containers and transformers require conventional foundations. Fence-post helical upgrades are on the Fence tab.
ELECTRICAL & UTILITY CIVIL ▼
Civil scope only (trench, set, backfill). Cable/conductor supply & terminations are typically in the electrical estimate — verify no double-count.
c = (N60 / 8) × 1,000 psf — Bowles SPT cohesion correlation Nc = 9.0 — deep helical bearing (H/D ≥ 5, individual plate) Qt = ΣAi × c × Nc — ultimate capacity per pier T = Qt / Kt — required installation torque (ft-lbs)
Enter design load, N60, helix configuration, and pipe size — then click RUN to compute pier capacity, torque requirement, and pier count.
NEW IN v3.0 — VMI/CBS CODES | CIVIL INDIRECTS | FIRE SUPPRESSION | OIL CONTAINMENT
VMI/CBS Column: Every line item now shows VMI code (e.g., 600-EW-CLR) and CBS position (e.g., 7.1.1.1.1) for cost control integration
Civil Indirects & Contractor Services: Mob, Demob, Permits, Surveys, Locates, Temp Fence, Dewatering, PM/Supervision, Heating/Hoarding, Material Testing, Performance Bonding — edit sidebar for temp fence LF and bonding %
Oil Containment (Foundations, optional): Enable "Secondary Oil Containment System Required" in sidebar — adds HDPE liner + oil water separator line items to the Foundations & Equipment Pads category
Fire Suppression (optional): Enable "Fire Suppression Civil Scope Required" in sidebar — adds the full Fire Suppression category with 11 line items (pipe, hydrants, FDC, water tank, etc.)
Demo: Enable "Demolition (Brownfield)" in sidebar — adds building SF + pavement SY + misc line items to the Demolition category
Pad Type (Foundations): "ISO Container Standard" ($36/SF) vs. "Rack-Mounted / Precision Cabinet" ($52/SF) — select in BESS Equipment sidebar
Screen Wall (Fencing & Security): Enable "Urban Screen Wall (Masonry/CMU)" in Fencing sidebar — adds $/LF CMU screen wall row to the Fencing & Security category
WHAT IS INCLUDED IN PAD RATES (Foundations & Equipment Pads)
Zone excavation to bearing elevation, spread footing or mat foundation
Form work, reinforcing steel (rebar per structural drawings)
Concrete placement, vibration, finish (broom or smooth per spec)
Anchor bolt assemblies / embedded plates (mfr-supplied or civil-furnished)
Backfill, compaction, surface restoration around pad
WHAT IS NOT IN THIS ESTIMATOR (Civil Scope Exclusions)
Underground electrical conduit, ductbanks, cable trench (electrical sub scope)
HV structure foundations — lattice towers, switchrack, bus support (structural/E&I scope)
Underground utilities — water, sewer, gas laterals (utility scope)
Geotechnical investigation and testing (owner or separate firm)
Building mechanical / electrical rough-in inside control building
Fire suppression mechanical equipment, valves, and controls (specialty scope — civil trench/pipe/structures included in the optional Fire Suppression category)
Rates calibrated to 2025–2026 US Northeast market data. Research basis: dewatering, fire suppression, HDPE liner, oil/water separator, PM/supervision, mass grading, helical piers, detention pond, riprap.
This is a tool in development — all calculations must be validated by a professional.
↧ Export Estimate
Structured export mirrors the on-screen estimate (canonical Imperial units / USD, the calibrated basis) so numbers flow straight into cost-control & bid systems. Every export is stamped with the rate-basis version.
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Save named estimates to a library in this browser, reload them any time, and compare base vs. prevailing-wage vs. rocky-soil side by side. Each save is stamped with its rate-basis version.
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