Features
Common Size : 8 feet x 4 feet, 7 feet x 4feet
Common Thickness Range : Upto 19mm
Laboratory Test Report of Ak Apple Ply Villa
Block Board
(Mr Grade as Per is 1659:2004)
Size: 2440 x 1220 x 19mm
| SL No | TEST | PRESCRIBED VALUE | RESULTS |
|---|---|---|---|
| 1 | Visual Inspection – Permissible defects | Block board shall be inspected visually for surface defects. | Satisfactory. |
| 2 | Dimensions, a) Length, mm b) Width, mm c) Thickness, mm d) Variation in thickness, mm e) Squareness, % f) Edge straightness, % |
Tolerance +6mm -0mm Tolerance +3mm -0mm +/-5% Not more than 0.5mm 0.2% 0.2% |
+2mm +1mm +0.98% 0.31 0.08% 0.06% |
| 3 | Dimensional Changes Caused by Humidity a) Changes in length, mm From 65% RH to 90% RH From 65% RH to 40% RH b) Changes in thickness, mm From 65% RH to 90% RH From 65% RH to 40% RH c) Local planeness d) At the extreme ranges of Humidity |
+/-1 +/-1 +/-1
+/-1 Less than 1/150
No delamination |
+0.45 -0.45 +0.46
-0.44 0.5/150
No delamination |
| 4 | Resistance to water | Minimum Pass Standard | Excellent |
| 5 | Adhesion of plies (Knife Test) | Minimum Pass Standard | Excellent |
| 6 | Resistance to microorganisms (Mycological Test) | No sign of separation at the edges | Conforms |
| 7 | Modulus of Elasticity, N/mm² | Average – 4000 Min. Individual – 3400 |
4658 4524 |
| 8 | Modulus of Rupture, N/mm² | Average – 40 Min. Individual – 34 |
47 44 |
| 9 | Spot test | Treated | Treated |



