Pile Log · Solar EPC
Solar Pile Log
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Log every pile cutoff elevation against EPC design, flag out-of-tolerance piles before racking starts, and deliver block-level conformance packages with a share link. EPC approves — you move to the next block.
Why this matters on solar sites
EPC racking contractors cannot start installing tracker frames until pile cutoff elevations are within tolerance — block by block. Without a documented conformance package, racking crews stand idle.
On a utility-scale project with 20–60 racking crew members and equipment on site, documentation delays cost $50,000–$500,000 per day. Gradelog eliminates the turnaround by letting your pile crew generate and share the conformance package the same day piles are driven.
What it does
Pile-by-pile elevation logging
- Log designed vs measured cutoff elevation for each pile ID
- Automatic pass/fail against your configured tolerance (±0.02 ft typical)
- Out-of-tolerance piles flagged immediately — rework before moving to next block
- Row and block organization mirrors your racking layout
Block-level conformance packages
- Generate an as-driven report per block when all piles pass
- Includes pile table, block summary, GPS coordinates, and tolerance reference
- PDF formatted to meet EPC documentation requirements
- Share link lets the EPC approve from anywhere — no site visit needed
GPS metadata on every pile
- GNSS fix quality, satellite count, HDOP, and correction age recorded with each shot
- Northing, easting, and elevation stored per pile ID
- Defensible record if pile elevations are disputed during racking
- Integrates with RTK rover data (BYO NTRIP)
Import from survey equipment
- CSV import from Topcon MAGNET Field, Trimble Access, Leica Captivate
- Generic CSV with column mapping for any data collector
- No re-keying — upload the file, match columns, done
- Offline capture and batch import when you return to connectivity
How it works
01
Set up your solar job
Create a job in Gradelog, enter design cutoff elevations from the racking design drawings, and configure the block/row structure and tolerance.
02
Log piles as they're driven
Enter measured cutoff elevations pile-by-pile, or import from your survey data collector CSV. Each pile gets instant pass/fail against the design.
03
Address out-of-tolerance piles
Flagged piles show the deviation and required action. Drive adjustments before moving to the next block — not during racking.
04
Generate and share the conformance package
When a block is complete and all piles pass, generate the as-driven report. Share the link with your EPC for digital approval. Racking can start.
Common questions
What does a solar pile as-driven report include?
An EPC-accepted as-driven pile elevation report includes: pile ID, block and row designation, design cutoff elevation, actual measured elevation, elevation variance, tolerance threshold (typically ±0.02 ft for solar), and pass/fail status for every pile in the block. The report also includes a project header, GPS coordinate grid, calibration log reference, and inspector signature block.
What tolerance is used for solar pile cutoff elevations?
Most solar EPC racking manufacturers specify ±0.02 ft (approximately ±1/4 inch) vertical tolerance for pile cutoff elevations. Some tracker systems have tighter requirements (±0.01 ft). Gradelog lets you configure tolerance per job or per block so the correct standard is enforced automatically.
How do I share a pile conformance package with the EPC?
Generate the as-driven report for any block in Gradelog and copy the share link. Text or email the link to your EPC contact. They open it in any browser, review the pile table and pass/fail summary, download the PDF, and approve or reject — no Gradelog account required. Their approval decision is timestamped in your job record.
Can Gradelog import pile elevation data from survey equipment?
Yes. Gradelog imports pile elevation CSV files from Topcon MAGNET Field, Trimble Access, Leica Captivate, and Spectra Precision data collectors. If your survey crew collects pile cutoffs with an RTK rover, those files import directly — no re-keying of elevation data.
Does Gradelog work offline on remote solar sites?
Yes. Gradelog is designed for offline-first operation. Most utility-scale solar sites are in remote agricultural or desert locations with no cellular coverage. Pile crews log elevations offline and the app syncs all data automatically when connectivity is available.
Every pile.
Every block. Done.
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