Field documentation for pile elevation verification, turbine foundation grades, EPC conformance sign-off, and as-built records across the full renewable energy construction spectrum.
On solar projects, EPC engineers won't authorize racking installation until as-driven pile documentation passes review. Incomplete or poorly formatted pile conformance packages add 3–7 days of back-and-forth delay — stalling the racking crew and burning schedule.
IEC 61400-6 and turbine manufacturer specs require tower foundation elevations within ±3mm to ±5mm (±0.01 ft) of design. Exceeding this voids the turbine warranty and requires costly remediation. Documentation must be captured and verified before tower erection.
Wind farms, solar fields, and geothermal sites are often in remote locations where paper field notes get lost, damaged, or never make it to the office. Field crew's documentation work disappears when paper does.
Log as-driven pile elevations with automatic ±0.02 ft tolerance pass/fail against design. Generate block conformance summaries for EPC sign-off same-day the driving is complete.
Log anchor bolt and foundation top elevations with ±3mm tolerance pass/fail — required before tower erection. GPS coordinates for each turbine location captured automatically.
Station-based grade shots on wind farm and solar site access roads — verify crane path grades against heavy haul requirements and solar site vehicle access limits.
Log drilling pad elevations, wellhead grades, and geothermal pipeline slopes. Verify collection pipeline grades for condensate drainage and equipment drainage specifications.
Document pole/tower foundation elevations, transmission line access road grades, and conductor stringing pad construction. KMZ export for transmission line GIS.
Foundation elevation verification, containment pad grade documentation, and site drainage verification for BESS facility construction. Compaction logs for pad subgrade.
Log compaction tests on turbine pads, solar pile trenches, access roads, and BESS foundations — referenced to Modified or Standard Proctor per geotechnical specification.
Generate block conformance summaries, failed pile logs with corrective action records, and as-built packages formatted for EPC and owner engineer review and sign-off.
Most EPC pile elevation tolerances for solar construction require vertical tolerance of ±0.02 ft (approximately ±1/4 inch) at the pile cutoff elevation. Some fixed-tilt systems allow ±0.04 ft. Horizontal position tolerance is typically ±0.04 ft from the design pile center. The exact tolerance is defined in the EPC's Pile Installation Specification and varies by racking manufacturer — Nextracker, Array Technologies, and GameChange each specify different adjustment ranges.
Sitemark generates the block conformance summary — pile count, tolerance pass/fail, corrective action status, and overall block conformance — in the same format EPC engineers use to issue racking authorization. A clean Sitemark package submitted before 5 PM typically receives EPC approval within 24 hours. Poorly formatted manual packages that require back-and-forth take 3–7 days, stalling racking installation.
Turbine manufacturer specifications typically require tower foundation elevations within ±3mm to ±5mm (approximately ±0.01 ft) of design elevation and within ±1mm of plumb across the anchor bolt circle. These are among the tightest tolerances in civil construction. RTK GPS with tilt compensation or a high-accuracy total station is required.
Yes. Sitemark's grade logging features work for drilling pad elevations, wellhead grades, and geothermal pipeline slopes. The core documentation platform — field shot logging, GPS capture, pass/fail verification, and report generation — applies to any construction requiring systematic elevation or grade documentation.
Battery storage facility (BESS) construction typically requires: foundation elevation documentation, containment pad grade verification (for spill containment slope compliance), site drainage documentation, compaction records for subgrade, and daily field reports. Sitemark covers all of these documentation components.
Yes. Sitemark handles foundation elevation documentation for transmission poles and towers, access road grade verification for heavy equipment access, and GPS location capture for all structures. The KMZ export supports transmission line GIS and as-built mapping.
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