Providing & fixing Magnesite Binded Fibrecrete Acoustic Panels
made of Pine Wood Fibre 25mm thick 1220mm x 610mm FAB Kerf
Edge, inserted in PVC channel ‘H’ Spline. ‘H’ Spline to be
Screw fixed @ 200mm vertically/ horizontally @ 610mm c/c on GI
metal frame of 50 x 50mm comprising of Floor & Stud Channel
making a grid of 610 x 610mm c/c. The frame is to be made in
proper line after leveling. The panels will be backed with
50mm Effusio wool 500 GSM inserted inside the grid of 610 x
610mm which in total will comprise of minimum NRC 0.95 as per
IS: 8225/ ISO: 354/ ASTM: 423 – 90 a. Acoustic Panel base
material should meet the Stringent Fire test requirement
having Class ‘P’ rating for Ignitability test as per BS 476
part 5; Fire Propagation index, I = 4.11 [lower the better] as
per BS 476 part 6 and Class ‘1’ rating as per BS 476 part 7
for Surface Spread of Flame test. Class ‘P’ and Class ‘1’ are
the highest rating. All joints of the tiles must in perfect
line and level.
| Physical Strength |
Regular in Structure, Durable, Stable. |
| Suitability |
Environment Friendly; Ineffective to Fungus, Termites &
Insects, suitable for Sound Biological construction.
|
| Fire Tests |
tested by CBRI Roorkee, Uttrakhand |
| Ignitability |
BS 476 part 5 - ‘P’ not easily ignitable |
| Fire Propagation |
BS 476 part 6 – Index ‘I’ = 4.11 |
| Surface Spread of Flame |
BS 476 Part 7 – Class 1 |
| Non Combustibility |
– ISO 1182 – Avg. mass loss = 52.27% |
| Thermal Conductivity |
k= 0.065 W/mK |
| Weathering Test |
Tested by SIIR, Delhi. ‘NO delamination and Damage
observed after the Test as per IS 9307’. Conforms to : IS
3308
|
Fab 25
| S. No |
Frequency |
125 |
250 |
500 |
1000 |
2000 |
4000 |
8000 |
NRC |
| 1 |
With 50mm air Gap |
0.31 |
0.31 |
1.07 |
1.01 |
0.76 |
1.03 |
0.98 |
0.80 |
| 2 |
With 50mm 600 GSM Polyfibre |
0.39 |
0.59 |
1.34 |
1.05 |
0.82 |
1.00 |
1.03 |
0.95 |
