Our industrial-grade approach

1) Assess & engineer

• Laser slab surveys and elevation mapping

• Soil borings and geotechnical review (as needed)

• Load, vibration, and drainage evaluation

• Repair design stamped by licensed engineers (when required)

2) Select the right method

• Underpinning: Helical or push piers to transfer loads to competent strata.

• Slab lifting/void fill: High-density polyurethane injection for precise releveling.

• Crack repair: Epoxy injection, routing/sealing, and joint stabilization/dowel retrofit.

• Soil improvement: Moisture conditioning, base repair, and drainage corrections.

• Surface restoration: Overlays, coatings, and hardeners for wear and chemical resistance.

3) Execute with minimal disruption

• Phased work areas around live equipment

• Night/offset shifts and barricaded zones

• Real-time QC with elevation checks and photo documentation

Case example (snapshot)

At a metro power substation, a transformer pad experienced differential settlement. Bunney’s Inc. installed engineered helical piers (60k-lb ratings) and re-leveled the pad via polyurethane injection. The phased plan kept the asset online—no removal, no unplanned outage.

Standards & documentation

Repairs align with ACI 318/224/562 and applicable ASTM test methods, with local code and utility standards observed. Deliverables may include stamped repair drawings, material submittals, cylinder/adhesion reports, pier logs, elevations, and closeout photos to support audits.

Cost & schedule—what to expect

• Extent of movement & root cause (expansive soils vs. localized voids)

• Load & use (equipment pads vs. light-duty slabs)

• Access & phasing (keep-live work, confined spaces, shielding)

• Finish requirements (tolerances, coatings, chemical exposure)

You’ll receive a clear, line-item proposal with options (good/better/best) so you can balance budget, downtime, and long-term performance.

Early warning signs

• Steps/curbs separating from slabs

• Doors binding; racking at frames or racks

• New or widening cracks, curled panels, ponding water

• Vibration-sensitive equipment drifting out of alignment

Why Bunney’s Inc.

• Industrial focus: Power, utility, manufacturing, and public works.

• Arizona-tested methods: Built for heat, expansive soils, and monsoon cycles.

• Zero-downtime mindset: Phased plans that protect operations.

• Accountable QA/QC: Measured results and defensible documentation.

FAQs

How do I know whether I need piers or foam lifting?
If movement is tied to deep bearing failure, underpinning (helical/push piers) is typical. If the slab is sound but has voids or minor settlement, polyurethane injection can relevel and re-support. We assess both subgrade and load paths before recommending a method.

Will production need to stop?
Not always. Many pads and interior slabs can be repaired in phases with restricted access zones. We’ll propose a work sequence that minimizes impact to operations.

How long do repairs last?
Properly designed underpinning and injection repairs are long-term solutions. Longevity depends on addressing drainage, joints, and soil moisture—items we include in the scope.

What documentation do you provide?
As-found/As-built elevations, testing, material certs, pier logs, injection volumes/locations, photos, and (when specified) engineer-stamped drawings and letters of conformance.

Do you coordinate permits and inspections?
Yes. We align with local requirements and owner standards; utility or industrial sites may need additional access, safety, or energized-work protocols.

Can you work around energized equipment or sensitive areas?
Yes—our teams follow site-specific safety plans, LOTO coordination, and clearance requirements, with shielding and monitoring where needed.