1. Location of Inspection:
(e.g., West Wing Boys' Stairs, Library Entrance)
2. Primary Data Collection (On-Site)
Measure one standard step in the middle of the flight to the nearest millimeter.
3. Ergonomic Analysis (Blondel's Formula)
Formula: \( 2h + d = K \)
Target: Ideal stride length (K) is between 62 cm and 64 cm.
Step A: Show your calculation for K:
Step B: Result: \( K = \) cm
4. Trigonometric Pitch Analysis
Pitch Angle (\(\theta\)): \( \theta = \tan^{-1}(\frac{\text{Rise}}{\text{Run}}) \)
Target: Safe public stairs are typically between 30° and 37°.
Step A: Show calculation for \(\theta\):
Step B: Result: \(\theta = \) degrees
5. The Final Audit Verdict
Is this staircase compliant with safety standards?
Detailed Justification:
Cite your K-value (is it 62-64?) and Angle (is it 30-37°?) in your argument.
Recommendations for Improvement: