In figures 17c 17d and figure 73d the details are equally applicable if the floor level beyond the sill reveal stepped up.
Fire door sill detail.
The old test of fire doors to bs 476 part 8 for fire resistance was carried out simply in a furnace increasing the temperature to that found in rooms on fire and the door was checked to ascertain when the fire would breach the door usually at the gaps at the head and sides of the door.
Per section detail 4 maximum jamb depth.
Anchoring at mullions sills.
This is most obvious with the use of step over bulkheads at doors to decks.
Fire door frames frames used in masonry walls may be used with a maximum 3 hour fire door while frames used in drywall stud walls are intended to be used with a maximum 1 1 2 hour fire door.
Consult with individual fire door frame manufacturers listings for fire door frames that can be used in drywall stud walls with a maximum 3 hour.
111 c recommended louver details for standard steel doors.
Filling and grouting around entrance by others.
Every fire rated doorset supplied by nz fire doors comes with an installer declaration that must be completed by the installer and returned promptly to nz fire doors for the issue of fire tags.
It is the bulkhead threshold level that is important not the internal floor level.
Standard steel doors can be provided with a variety of louver designs and sizes.
Integral frame sill fire doors models 660 662 integral frame counter fire doors models 660 662 provide a handsome finished appearance for a variety of applications including food service counters available for opening sizes up to 9 5 x 55 2870 mm x 1346 mm these doors carry a 1 1 2 hour ul class b label and are factory assembled as a complete unit with fully welded frames.
The declaration needs to detail the approved hardware that has been installed with the doorset.
Door frames are to be anchored to walls and properly grouted in place to maintain legal fire rating masonry construction.
Internal openings in walls should.
Doors and windows shall be installed to appropriate tolerances including openings in walls and external openings viewed from the inside.
Be flat along the length of sills and window boards with a maximum deviation of 3mm in every 2m.
Protection association for fire doors and fire windows nfpa 80 and the door components installation.
Where openings occur all walls must be plumb and sill supports must be level and flush with hoistway walls.
Similarly a floor level could be above a threshold level.