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Direct Fixing -
Fire attack from underside / Non-loadbearing & loadbearing

Increase from 60 to 240 minutes fire resistance

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Concrete Floor Slab Upgrading, Direct Fixing Method

The board thickness of the protection material is relevant to the strength of the concrete and the cover to the reinforcement. In some instances, such as very high strength concrete, a greater thickness of protection material may be required.

Table 1:
PROMATECT®-H (Direct fixing)
Areas of
application		 Concrete thickness x
nominal density		 Increase of
fire resistance		 Board
thickness		 Tests and assessments standards/labs
Concrete
floors slab		 100mm x 2100kg/m³ From 60minutes to
120 minutes		 1 x 9mm
(underside)
BS476: Part 21,
BS476: Part 22 and
AS1530: Part 4 Report No.
  • BRANZ 96/876 Issue 2
  • BRANZ FP 2138
Concrete
floors slab		 125mm x 2100kg/m³ From 120minutes to
240 minutes		 1 x 12mm
(underside)
 
 
 

Direct fixing - Fire attack from underside / Non-loadbearing & loadbearing
Direct fixing - Fire attack from underside
Fixing details


 
 
 
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