Can I use a collar on any type of pipe and in any application?
No. You can only use the collar in applications that have been tested or included in the Extended Application Report at the given fire-rating level. When assessing the collar, it is important that you consider the pipe type, pipe size and slab thickness. Refer to the collar product pages and approval charts for a list of all fire-rated system configurations.
Can I push a pipe fitting up inside the collar from the underside to save on head height?
Sure Snap collars have been tested with fittings pushed up inside the collar for a number of pipe types and diameters. Refer to the collar datasheet to determine if the pipe thickness allows for a fitting.
Some pipe types are difficult to close and therefore fittings are not covered by testing or assessment.
What can I use to fill the gap between the collar and the pipe on the top of the slab?
The requirements for filling the gap between the collar and the pipe on the top of the slab vary depending on the size of the gap.
|For gaps up to 10mm wide:
|No backfill is required.
|For gaps 10mm - 20mm wide:
|Sika Everbuild Everflex LMA 200 Contractors Sealant is required and is applied between the pipe and the aperture in the floor to a depth of 10mm.
|For gaps 20mm - 40mm wide:
|General Purpose Construction Grout is required. To fill, a cardboard gasket is positioned either 30mm below the upper surface of the floor or on the rubber ring of the collar if this is less than 30mm below the surface of the floor. The grout is then applied in the gap above this.
Can you use fire foam to seal between the top of the collar and the pipe?
No. Fire Foam is not to be used in any situation.
Is it okay to get concrete in the spring pockets?
No. There should never be any concrete in the spring pockets. If any has leaked in during installation it may interfere with the ability of the collar to activate in the event of a fire, leaving the collar non-compliant.
Can the fire collar be altered in any way?
No. The collar cannot be altered in any way other than as prescribed by the installation instructions.
If a fuse-link (the nylon link holding the springs ends together) breaks, does the collar need to be replaced?
If a fuse-link breaks before the pipe has been installed, the fire collar should be replaced or a new fuse-link installed on the activated spring. Contact the distributor for a replacement.
If a fuse-link breaks after the pipe has been installed, the fire collar is still compliant and no further action needs to be taken.