STANDARD -
Duct span maximum up to 1500mm
| PROMATECT®-H |
| Board Thickness |
Stability
Rating |
Integrity
Rating |
Insulation
Rating |
| 9mm |
120 minutes |
120 minutes |
- |
| 15mm* |
120 minutes |
120 minutes |
30 minutes |
| 15mm* |
120 minutes |
120 minutes |
120 minutes |
| 12mm |
240 minutes |
240 minutes |
- |
| 15mm* |
240 minutes |
240 minutes |
120 minutes |
| 25mm* |
240 minutes |
240 minutes |
240 minutes |
| * for BS476: Part 24 only |
Duct span up to maximum 1500mm wide
The above construction of fire resistant encasements around steel ducts is up to 1500mm wide.
However, PROMATECT®-H duct systems are approved for up to 10m wide.
Variations on supporting components for duct width up to
15m are available on request, please consult Promat Technical Department.
For impact resistant systems in accordance with the criteria BS5669: Part 1
exposed to external and internal fire, 15mm, 20mm or 25mm thick PROMATECT®-H
boards are required. Insulation will be as Duct type B (exposed to internal fire).
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WIDE -
Duct span between 3000mm to maximum 6000mm
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With up to 120 minutes & 240 minutes fire resistance |
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Integrity only |
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Integrity & Insulation |
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Tested to BS476: Part 24 & AS1530: Part 4 requirement |
For duct spanning between 3000mm to maximum 6000mm. Additional support channel at mid span are
required,
please consult Promat Technical Department for construction details.
Duct span between 3000mm to maximum 6000mm wide
Fire resistant ducts can be formed where the substrate
from which the steel duct is supported provides protection
to some areas, thus 1, 2 and 3-sided solutions in combination
with walls and ceilings are available.
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Download this full application detail
on PDF version. |
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