name: piletest-pro description: Domain knowledge and workflows for pile load testing reports compliant with IS 2911 (Part 4) - 2013. Use when working on test calculations, report generation, PDF templates, pass/fail criteria, or adding new test types (IVPLT, RVPLT, Lateral, Uplift). This skill encodes Indian Standard formulas, acceptance criteria, report structure requirements, and chart specifications for pile foundation testing.

PileTest Pro Domain Knowledge

This skill provides domain expertise for pile load testing and IS 2911-compliant report generation.

Quick Reference

Test Types & Load Multipliers

Core Formulas

// Load from pressure (MT)
load = (pressureKgCm2 × ramAreaCm2) / 1000

// Average settlement (mm)  
avgSettlement = (dg1 + dg2 + dg3 + dg4) / enabledGaugeCount

// Net settlement (mm)
netSettlement = maxSettlement - elasticRebound

// Safe load from 12mm criterion (MT)
safeLoad_12mm = (2/3) × loadAt12mmSettlement

// Safe load from ultimate criterion (MT)  
safeLoad_ultimate = 0.5 × loadAt10PercentDiameter

Pass/Fail Criteria (IS 2911)

Vertical Tests (IVPLT/RVPLT):

• Net settlement ≤ 12mm (or 2% of pile diameter, whichever is less)
• Safe load = minimum of design load, safeLoad_12mm, safeLoad_ultimate

Workflow

1. Calculate Results

See references/is2911-standards.md for detailed calculation steps.

2. Generate Report

See references/report-structure.md for PDF section specifications.

3. Validate Readings

For IS 2911 compliance validation, see scripts/validate_readings.py.

Files

• references/is2911-standards.md - Complete IS 2911 Part 4 acceptance criteria
• references/report-structure.md - PDF report section specifications
• references/test-types.md - Detailed test type configurations
• scripts/validate_readings.py - Python validation for readings
• assets/templates/ - HTML report template patterns

Key Implementation Points

Settlement Calculations

1. Max Settlement: Highest avgSettlementMm during LOADING phase
2. Elastic Rebound: Max settlement minus final settlement after full unload
3. Net Settlement: Permanent settlement after load removal

Safe Load Determination

governingCriterion = 
  if (settlementLimit was reached) → "SETTLEMENT_12MM"
  if (10% diameter was reached) → "ULTIMATE_10PCT_DIA"  
  else → "DESIGN_LOAD"

safeLoadAdopted = min(
  designLoadT,
  safeLoadFromSettlementT,  // (2/3) × load at 12mm
  safeLoadFromUltimateT     // (1/2) × load at 10% dia
)

Chart Configuration

• X-axis: Load (MT)
• Y-axis: Settlement (mm) - inverted (0 at top, increases downward)
• Curves: Loading (blue), Holding (amber), Unloading (green)
• Annotations: 12mm limit line, safe load vertical line