Enter Conditional Proof Details
Formula Used
The calculator uses conditional implication and weighted support. The logical rule is: If P then Q is valid when P is false, or Q is supported.
Premise Support = True Premises ÷ Total Premises × 100. Weighted Support = Premise Support × 0.45 + Confidence × 0.25 + Inspection × 0.20 + Safety Allowance × 0.10. Safety Allowance equals 100 minus the risk factor.
How to Use This Calculator
Enter the construction condition being tested. Add three premises that support the conclusion. Mark each statement as true or false. Add risk, confidence, and inspection percentages. Press the calculate button. The result appears below the header and above the form. Use CSV or PDF buttons to save the proof table.
Example Data Table
| Project | Condition | Premise Support | Risk | Result |
|---|---|---|---|---|
| Retaining Wall Review | Drainage layer is installed | 100% | 20% | Conditionally Supported |
| Slab Pour Check | Subgrade is ready | 66.67% | 35% | Conditionally Supported |
| Roof Framing Review | Bracing is complete | 33.33% | 55% | Not Proven |
Conditional Proof in Construction Planning
Clear Logic for Site Decisions
A conditional proof helps teams test a decision before work moves forward. It starts with an assumption. The assumption may be a site condition, material approval, inspection result, or design note. The calculator then checks whether entered premises support a final conclusion. This structure is useful when construction choices depend on several linked facts.
Why Conditional Review Matters
Construction projects often include changing field conditions. A small missing detail can affect safety, quality, cost, and schedule. Conditional proof gives a simple framework for reviewing those details. It does not replace engineering judgment. It supports organized thinking and better documentation. Each premise should come from drawings, inspection records, tests, photos, or site reports.
Reading the Score
The premise support score shows how many entered premises are true. The weighted score adds confidence, inspection progress, and risk adjustment. A high score means the conclusion has stronger support. A low score means the proof needs more evidence. The result also checks basic implication logic. If the assumed condition is false, the conditional statement is not contradicted. If the condition is true, the conclusion must be supported.
Best Practice
Use short, testable statements. Avoid vague notes. Replace phrases like good condition with measurable requirements. Review the proof with the field team. Save the exported file with project records. Update the proof after inspections or changes. This helps create a clear trail for planning meetings. It also helps explain why a construction decision was accepted, delayed, or rejected.
FAQs
What is a conditional proof calculator?
It checks whether a conclusion follows from an assumed construction condition and supporting premises.
Can this replace an engineer?
No. It is a planning and documentation aid. Final decisions need qualified professional review.
What does premise support mean?
It shows the percentage of entered premises marked true. More true premises give stronger support.
Why include risk factor?
Risk lowers the support score. Higher risk means the proof needs stronger evidence.
What is evidence confidence?
It is your rating of how reliable the supporting documents, tests, or observations are.
What is inspection completion?
It shows how much required inspection work is complete for the tested condition.
When is the proof not proven?
It is not proven when the condition is true but the conclusion lacks enough support.
Can I export the result?
Yes. Use the CSV and PDF buttons shown inside the result section after calculation.