Hello,
I am working on the project where we are
using chemical anchors Hilti HY 200A + HAS-U. These anchors connect the secondary steelwork (supporting cladding panels ) to RC structure. The steelwork and connection need to have 60 & 120 minutes fire resistance. Could you please advise if one of the following method would be sufficient to provide fire protection to these chemical anchors:
- intumescent paint (to anchor and baseplate) with the same paint system and thickness as steel member
- concrete encasement to the baseplate and anchors
- fire resistance caps to anchors (Spec to this caps: The Typhoon bolt caps have demonstrated resilience for up to 180
minutes in cellulosic type fires and 180 minutes in hydrocarbon pool fire/jet fires, in temperatures of up to 1200°C. They have demonstrated an ability to keep the temperature of bolts and nuts below 550°C /538°C for cellulosic fires
for fire durations of up to 180 minutes, and 538°C for UL hydrocarbon fires of durations up to 180 minutes, when used in conjunction with an appropriate steelwork protection system
Please advise about any other acceptable method.
Regards
Piotr Pienkowski
Thank you for your enquiry, however we have no test data available for any of our products where a proprietary fire protection system has been applied to our products and are therefore unbale to comment upon how the anchor performance would be affected by there application.