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Bison Partitions & Partition Systems

partitions
partitions

Bison is an ideal choice for partitions, in residential, commercial, industrial complexes and public buildings, owing to its excellent qualities of fire resistance and acoustic insulation apart from natural resistance to weather, fungus, and termite and vermin attack. Bison Panel is an ideal material for many types of dry wall partitions including double skin, single skin, with steel and timber studs

Steel stud partitions provide high values of fire resistance and sound insulation. Partition systems can be adopted to achieve up to 4 hours fire rating by the use of thermal insulation materials and by providing various thicknesses of Bison Panel.

  • Recommended thicknesses: 10mm, 12mm & 14mm

ADVANTAGES OF BISON PANEL PARTITIONS

PARTITION FRAME FIXING

BOARD FIXING

JOINTING

The grooves in the joints can either be painted neatly or covered with tee sections. In case flush joints are required, the following procedure is to be adopted using proprietary jointing compound.

FLUSH JOINTS

The board should be fixed with a ‘gap’ of 1-2 mm and in any case not exceeding 3 mm. Edges of the Bison Panel should be limited to a width of 70 mm and a depth of 1.5 mm - 2.0 mm.

Ensure the moisture content of Bison Panel is within the stated specification of 9% + 3% before jointing commences. Use only the Alltek jointing/scrim materials and proceed as follows:

DWARF PARTITIONS (HALF PARTITIONS)

Timber studs can be used in place of steel studs. In this case the frames are first assembled on the ground and then fixed between the floor and the roof. Boards are fixed only after completing the frame work.

PARTITIONS REQUIRING MORE MOVEMENT IN THE BOARD

Bison Panel is stabilized in the factory with a moisture content of 9%+3%. During its application at site of work, the moisture condition may vary according to ambient humidity and temperature in the atmosphere. It may take 24 to 72 hours to acclimatize with site conditions. So it is necessary to allow some time ranging from 24 hours to 72 hours as acclimatization period before it is put to use.

Even after fixing or put to use, the board will lose or gain some moisture due to atmospheric changes of temperature and humidity. This is common with wood or any other particle boards. When such changes are taking place the board will have a movement due to expansion or contraction. So care as to be taken by providing adequate gaps at the board joints.

In the previous paragraphs, general application of the board for making partitions in ideal conditions is discussed. Slight loose holes in screw fixing points and a gap of 2mm to 3mm at the joints normally take care of small movement in the board. The stress developed in the board due to movement will be distributed among all fixing points without causing any stress concentration and consequent cracking. But in extreme cases where the movement in the board is predominantly more (say more than 3mm,) the method of construction of supporting frame for the partitions is discussed in the following paras.

DOUBLE SKIN INTERIOR WALL PARTITIONS

This method of fixing is called sliding frame or moving frame method.

NOTE: IN SLIDING FRAME METHOD SINCE THE EDGES OF THE BOARDS ARE PROVIDED WITH DOUBLE STUDS AT THE JOINTS, THE STAGGERING OF THE BOARD JOINTS WILL NOT BE POSSIBLE.

DOUBLE SKIN EXTERIOR WALL PARTITIONs

INTERIOR WALLS FOR TILE FIXING

Minimum thickness of Bison Panel should be 12mm.

When tiles are to be fixed on internal walls the following procedure is recommended.

DOUBLE SKIN TIMBER STUD INTERIOR PARTITIONS

THERMAL PROPERTIES

Thickness of Bison Panel (mm) Thermal Resistance, R=m2K/W Heat Transmission Co-efficient, K=W/ m2R Critical Value of Fire Resistance (in Hours)
6 0.0231 3.722 -
8 0.0308 3.666 0.07
10 0.0385 3.565 0.15
12 0.0461 3.471 0.21
16 0.615 3.295 0.31
20 0.769 3.136 0.38
40 0.1538 2.527 0.61

PARTITIONS SYSTEMS: FIRE RATING & SOUND REDUCTION

Recommended thicknesses: 12mm, 14mm & 16mm

The supporting frames for fire rated partitions is same as described in content above where the interior gaps at joints are up to 5 mm and exterior gaps are up to 10mm. In both the cases sliding frame method using light structural steel studs and tracks having 1.6 to 2.3 mm thick may be use

  1. TIMBER STUDS:
  2. Thickness Studs Dimensions Fibre Glass Dimension Rockwool Fire Rating Sound Reduction
    10 mm 75 mm x 50 mm 25 mm thick 612 kg/m3 - ½ hour 44 dB
    12 mm 75 mm x 50 mm - 40 mm thick 43 kg/m3 1 hour 46 dB
    16 mm 75 mm x 50 mm - - ½ hour 45 dB
    16 mm 75 mm x 50 mm - 40 mm thick 43 kg/m3 1 ½ hour 47 dB
    16 mm 75 mm x 50 mm - 75 mm thick 43 kg/m3 2 hour 47 dB
    10 mm – 2 layers 100 mm x 50 mm - 100 mm thick 60 kg/m3 4 hours 48 dB
  3. STEEL STUDS:
  4. Thickness Strips Studs Dimensions Fibre Glass Dimension Rockwool Mineral wool Fire Rating Sound Reduction
    10 mm 100mm x 10mm 48mm x 32mm 25 mm thick 60 kg/m3 - - ½ hour 45 dB
    12 mm 100 mm x 12 mm 48 mm x 32 mm 50 mm thick 60 kg/m3 - - 1 hour 52 dB
    16 mm 100 mm x 16 mm 48 mm x 32 mm 50 mm 60 kg/m3 - - 1 ½ hour 53 dB
    20 mm 100 mm x 20 mm 70 mm x 32 mm - 2 layers of 50 mm 60 kg/m3 - 2 ½ hour 53 dB
    20mm & 12mm – out & in - 146 mm C stud boxed with 18 mm x 120 mm fillet - - 100 mm thick 85 kg/m3 4 hour 55 dB
termite_proof

TERMITE
PROOF

fire_proof

FIRE
RESISTANT

weather-resistant

WEATHER
RESISTANT

strong

STRONG &
DURABLE

sound-insulation

SOUND
INSULATION

termite_proof
fire_proof
weather-resistant