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  1. A

    Fire rated glass alternative - could Acrylic/Polycarbonate sheet (class 1 or 3???) be used?

    As stated in the requirement an appropriate means of escape in case of fire from the building to a place of safety outside the building, no risk assessing would take this away as its a sleeping risk. No Building control officer should be accepting this without a valid design and the only person...
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    Fire rated glass alternative - could Acrylic/Polycarbonate sheet (class 1 or 3???) be used?

    You are correct in saying that the guidance in Approved Document B is not the law. However if you look at the requirements of B1: Means of warning and escape B1. The building shall be designed and constructed so that there are appropriate provisions for the early warning of fire, and...
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    Fire rated glass alternative - could Acrylic/Polycarbonate sheet (class 1 or 3???) be used?

    Technically you only need an FD20 door. Appendix B in Approved Document B Vol1 goes into detail on fire doors and the requirement and what you can and cannot use, the area you are currently describing is for surface spread of flame and not fire integrity. One other option i have seen in the...
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    Fire rated glass alternative - could Acrylic/Polycarbonate sheet (class 1 or 3???) be used?

    No idea why any building control body in the land would deem this acceptable (Assuming the floor you added is over 4.5m). I cant see any guidance in AD B vol1 or BS 9991 that would allow this. The whole requirement of B1 is Means of Warning and Escape, granted the warning is fine but the escape...
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