Bridge Info
Visual Inspection
VI Report
Bridge Conditions
Classification Summary
NDT Planning
NDT Results
Interpretation
Dist. Testing
Add. Info
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Step 1 of 9
Structure Info
01
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Bridge Information
Bridge details · geometry · 3D visualization
Bridge Details
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Structural Images (Optional)
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Upload multiple images per view. These will appear in the VI report.
Front View
Rear View
Left Side
Right Side
Step 1 of 9 · Page 1/2
Bridge Geometry
3D Bridge View
Enter geometry values above to generate the 3D bridge view
Step 1 of 9 · Page 2/2
02
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Visual Inspection
Record distress types, severity & photos per structural element and test region
⚠️
Note: AI analysis provides an initial assessment based on visual data only.
User review & on-site input are essential for accuracy.
Further testing (NDT / destructive) is always advised before making any structural decisions.
03
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Bridge Conditions
Define environmental context · hydraulic & geotechnical conditions · auto-suggests test regions & NDT tests
Environmental & Chloride Exposure
Hydraulic & Scour Conditions
Component Condition Overview
Traffic & Loading
Step 3 of 9
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Visual Inspection Report
AI-generated professional report · damage summary · downloadable PDF
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Generate Visual Inspection Report
Generate a professional structural visual inspection report with detailed findings, damage analysis, component photos, and engineering recommendations.
Report generated. Review below — then download as PDF.
Visual Inspection Report
04
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Classification Summary
Auto-classify structural components into assessment regions
Test Region Definitions
Review inspected components, assign each to a test region, and define environmental & structural test regions. Each test region becomes an independent statistical population for NDT sampling in the next step.
🌍 Environmental Context from Step 1
Regions auto-assigned based on Assessment Purpose, structural position, RCC grade & construction phases
Component Inventory
All components captured in Step 2 (AI or manual). Select each row from this list or choose Custom to add/edit freely.
| # | Component (from Step 2 / custom) | Element | Story | Position | Comp. ID | Distress | Severity | Importance | Test Region |
|---|
Step 4 of 9
05
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NDT Planning
Statistically-optimised sampling plan per test region · ACI PRC-ITG-11-24 §4.1.2
Sampling Configuration
Sampling is calculated independently per test region using ACI PRC-ITG-11-24 §4.1.2.? The program auto-selects distressed components (priority) and randomly samples non-distressed ones. You can override target, distressed, and non-distressed points per test region.
ACI PRC-ITG-11-24 §4.1.2 — Key Parameters
Conf% — Confidence Level
Probability that the true mean lies within the precision band. Determines Z-score (e.g. 95% → Z = 1.96, 90% → 1.645).
Probability that the true mean lies within the precision band. Determines Z-score (e.g. 95% → Z = 1.96, 90% → 1.645).
Prec% — Target Precision (E)
Allowable error as % of mean. Tighter precision (lower %) requires more samples. Typical range: 10–25%.
Allowable error as % of mean. Tighter precision (lower %) requires more samples. Typical range: 10–25%.
V — Coefficient of Variation (CV%)
Measure of data spread = (σ/μ)×100. Higher variability → more samples needed. Default 15% for concrete.
Measure of data spread = (σ/μ)×100. Higher variability → more samples needed. Default 15% for concrete.
N — Population Size
Total components in the test region. Used for finite population correction (FPC): n = n₀ / (1 + (n₀−1)/N).
Total components in the test region. Used for finite population correction (FPC): n = n₀ / (1 + (n₀−1)/N).
Formula: n₀ = (Z · V / E)² → n = n₀ / (1 + (n₀−1)/N) ·
Z-scores: 80% → 1.282 | 85% → 1.440 | 90% → 1.645 | 95% → 1.960 | 98% → 2.326 | 99% → 2.576
Note: The components listed below are suggestions based on the sampling strategy. You can keep them as-is or change the selected components in the next step (NDT Results).
Test Region plan will appear here once test regions are defined in Step 3.
Select NDT Tests
Choose tests based on observed distress and test region conditions. Multiple tests can be selected.
⚒️ Rebound Hammer
🔊 Ultrasonic Pulse Velocity (UPV)
⚡ Half-Cell Potential
📏 Cover Meter
🧪 Carbonation Test
🔩 Core Test
🧂 Chloride Content
🔋 Electrical Resistivity
📉 Corrosion Rate
⚗️ Sulphate Content
🌊 Salinity
Observation → Test Guide
| Observation / Condition | Tests to Perform |
|---|---|
| 🌊 Coastal / flood exposure | Salinity + Chloride Content |
| 🔍 No visible damage, but at risk | Electrical Resistivity |
| 🔴 Rust stains / cracks / spalling | Corrosion Rate + Chloride Content |
| ⚡ Conflicting NDT results | Chloride Content + Electrical Resistivity |
| 🧱 Expansion / soft concrete | Sulphate Content |
| 🗺️ Large structure mapping | Electrical Resistivity (first pass) |
Step 5 of 9
06
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NDT Results
Enter field readings per test type · live averages · distribution analysis
Field Readings
Enter field readings for each test below. Select the test region and component, set the number of measurement points, then fill in the readings. The live average updates as you type.
Tests are pre-populated from your Step 4 test region plan. Add or remove rows as needed.
Step 6 of 9
07
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NDT Interpretation
Statistical interpretation · IS 516:1959 & IS 13311:1992 (default) / ACI PRC-ITG-11-24
Correction Factors & Standard
Statistical interpretation of NDT readings. Select the interpretation standard below. Outlier detection, quality grading, and characteristic strength computation follow the chosen code. Rebound Hammer strength is estimated via fest = a·Rb and corrected for site conditions.
Interpretation Standard
IS: fchar = f̄ − 1.65·s (IS 456:2000)
ACI: f′eq = f̄ − k·s (90% CL tolerance)
ACI: f′eq = f̄ − k·s (90% CL tolerance)
Site Correction Factors (applied to all Rebound Hammer readings)
fest = a·Rb |
ftrue = fest × Cangle × Ccarb × Cmoist |
IS: fchar = f̄true − 1.65·sf (IS 456:2000 lower fractile) |
ACI: f′eq = f̄true − k·sf (90% CL, ACI PRC-ITG-11-24 §4.4)
Chart Thresholds
Custom Threshold for Current Test
Step 7 of 9
08
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Distribution Testing
Statistical test region validation · t-test · KS test · F-test · histograms · box plots
When to Carry Out Distribution Testing
1 · After Initial Zoning
After defining test regions from visual inspection (distress, exposure, construction differences), use distribution testing to confirm test regions are truly different. If distributions are similar → merge test regions. If different → keep separate.
2 · Uncertainty in Zoning
Similar crack patterns, slight variation in rebound values. Test: same mean? Same variability? Use t-test and KS test to resolve ambiguity before finalising test region boundaries.
3 · Before Pooling Test Results
Critical step. If combining data from multiple test regions for strength estimation, you are assuming the same distribution. ACI guidance requires statistical justification before pooling.
4 · Small Sample Sizes
If a test region has very few test points, you may consider combining with an adjacent test region — but only after confirming distributional equivalence via formal tests.
5 · NDT vs Core Inconsistency
High variability within a test region, or adjacent test regions showing similar values — re-examine zoning using distribution tests to identify whether re-zoning improves consistency.
6 · Iterative Re-zoning (ACI)
ACI approach is iterative: Initial zoning → Testing → Statistical validation → Refined zoning. Distribution tests drive each refinement cycle and provide the audit trail.
Typical Statistical Checks
t-test — Mean comparison
KS test — Distribution comparison
F-test — Variance comparison
Histogram — Frequency distribution
Box plot — Spread & outliers
Test Region Distribution Analysis
Go to Step 5 to enter NDT readings, then come back here for statistical analysis.
Step 8 of 9
08½
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Additional Information
NDT testing images · supplementary data · notes for detailed report generation
NDT Testing Images
Upload photos from NDT testing — rebound hammer readings, UPV equipment, core samples, carbonation tests, half-cell potential measurements, etc.
These images will be included in the detailed report.
No images uploaded
Site Observations & Notes
Provide additional observations, field notes, or contextual information that will help generate a more comprehensive report.
Supplementary Test Data
Add any additional test results not captured in earlier steps — chemical analysis, load tests, material certificates, etc.
Supporting Documents
Upload any supporting documents — material test certificates, previous inspection reports, structural drawings, etc.
Report Configuration
Additional Info
09
🤖
Review & Generate Report
AI analysis · IS 456 · IS 13311 · ACI PRC-ITG-11-24 · complete repair BOQ
Assessment Summary
AI will analyze all collected data using IS 456:2000, IS 13311:1992, and ACI PRC-ITG-11-24 statistical methods, and generate a complete condition assessment with repair BOQ.
Step 9 of 9 — Final
Analyzing structure…
Reviewing inspection data…
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Comprehensive 40–50 page report with all assessment data, NDT results, and recommendations
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Generating Detailed Report
Collecting all assessment data…
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Detailed Condition Assessment Report
Click any section to edit · Changes are preserved for download
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