| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. TEST METHODOLOGY | |||
| A1 | Test method selection (oven-dry gravimetric or meter) Acceptance: Oven method per IS 1708; meter method per manufacturer specs; documented | Follow standard measurement procedure | OK NC NA HOLD |
| A2 | Equipment calibration (moisture meter calibrated within 6 months) Acceptance: Meter calibrated per manufacturer; calibration certificate on file | Accurate measurement | OK NC NA HOLD |
| A3 | Sample selection (random, representative of batch) Acceptance: Minimum 10% of batch tested; samples from different locations/layers | Objective sampling | OK NC NA HOLD |
| A4 | Measurement location (heartwood and sapwood differentiation if needed) Acceptance: Multiple measurements per sample (core and surface); recorded separately | Account for wood variation | OK NC NA HOLD |
| B. MEASUREMENT & CALCULATION | |||
| B1 | Initial weight (Wet weight of timber sample) Acceptance: Measured to 0.1 g precision; recorded in grams | Baseline for moisture calculation | OK NC NA HOLD |
| B2 | Oven drying (110±5°C until constant weight achieved) Acceptance: Sample dried at 110°C until constant weight (within 0.1 g change over 2 hrs) | Remove all moisture per standard method | OK NC NA HOLD |
| B3 | Dry weight measurement (after oven drying and cooling) Acceptance: Cooled in desiccator, weighed immediately; recorded to 0.1 g | Determine oven-dry reference | OK NC NA HOLD |
| B4 | Moisture content calculation (MC % = [(Wet - Dry) / Dry] × 100) Acceptance: Calculated to 0.5% precision; recorded for each sample | Quantify moisture percentage | OK NC NA HOLD |
| C. RESULTS & ANALYSIS | |||
| C1 | Average moisture content of batch Acceptance: Average MC ≤15% for structural timber; ≤12% for joinery; recorded | Summary metric for compliance | OK NC NA HOLD |
| C2 | Moisture variation within batch (std dev, range analysis) Acceptance: Variation ≤4% between highest and lowest readings acceptable | Assess seasoning uniformity | OK NC NA HOLD |
| C3 | Comparison with mill certificate data Acceptance: Field MC within ±3% of mill certificate; discrepancies noted and investigated | Verify supplier claims | OK NC NA HOLD |
| C4 | Compliance assessment against specification requirements Acceptance: All samples within specified MC range; PASS/FAIL verdict issued | Determine acceptance | OK NC NA HOLD |