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18 Pillows Fire resistant pillows were originally developed as a temporary form of fire stopping used extensively in telephone exchanges during construction. They consist of a similar construction as a conventional pillow we sleep on; that is an outer covering and an infill material. The conventional fire pillow consists of a fire retardant cotton cover (again typically coloured for ease of recognition), with a mineral fibre infill material. These pillows are required to be packed firmly into openings to ensure no gaps are present to allow the passage of flames and hot gases. They are often used in conjunction with sealants to ensure that the integrity of an opening is maintained. In more recent times there has been the introduction of water resistant casings and intumescent pillow infill materials, arguably making a more versatile and higher performance product and negating the need for using sealants as part of the system. The use of fire resistant pillows is far too prevalent and many designers and facility managers prefer a more robust and permanent form of fire stopping product. Fire resistant pillows are used to fill the large gaps within these cable penetrations Version 1a—March 2006
19 Fire collars Fire collars, often referred to as “fire stop” or “fire choke” collars, are devices used to provide effective fire stopping for plastic pipes. They typically consist of a steel or plastic canister, filled with a predetermined amount of intumescent (expanding material upon exposure to excessive heat) material. During a fire scenario, as the plastic pipe begins to soften, the intumescent material expands to many times its original volume, helping crush the plastic pipe and fill the void, providing an effective seal against the passage of flames and hot gases. Traditionally fire collars for use on PVC pipes were supplied in size increments to match the common pipe sizes, namely 40, 50, 65, 80, 100 and in some cases 150mm nominal diameter. Cast in situ floor slab collars These are nailed or fixed to the formwork and integrated within the steel reinforcing, prior to pouring of a concrete floor slab in a multistorey building. They conventionally consisted of a robust, spun metal canister or casing, but recent advances in plastic technology and the cost competitiveness of the fire collar market has seen a transition in Australasia to plastic canisters. The cast-in situ fire collar reduces the need for time consuming and expensive concrete core hole drilling by helping form an opening in the floor slab for the plastic pipe to be quickly and easily reticulated. Some cast in situ collars can be difficult to identify or verify in situ during subsequent maintenance or inspection regimes. In recent times, to cater for other plastic pipes sizes, where the outer diameter of the plastic pipe varies, and to reduce model numbers and stock holdings, many proprietary fire collars can be used on more than one size and type of plastic pipe. Fire collars designs consist of the following generic types: • Cast in situ floor slab collars • Retrofit or surface mounted collars • Wall collars • Ceiling collars • Wraps A typical cast-in situ fire collar used for protection of plastic pipes in floor slabs Typical cast-in situ collars fixed into the concrete formwork on-site Version 1a—March 2006
Page 1 and 2: Fire Stopping of Service Penetratio
Page 3 and 4: 3 PREFACE This publication has been
Page 5 and 6: 5 Alliance manufacturer / supplier
Page 7 and 8: 7 Fire Stopping Systems Probably th
Page 9 and 10: 9 Opening size The overall size of
Page 11 and 12: 11 Plumbing services Plumbing servi
Page 13 and 14: 13 Electrical services (continued)
Page 15 and 16: 15 Control joints Fire resistant co
Page 17: 17 Mortars Mortars are powders whic
Page 21 and 22: 21 Fire dampers Fire dampers are de
Page 23 and 24: 23 Larger opening barriers This cat
Page 25 and 26: 25 Control joint materials (continu
Page 27 and 28: 27 Manufacturer’s installation in
Page 29 and 30: 29 Australasian Regulatory Requirem
Page 31 and 32: 31 Maintenance of fire stopping sys
Page 33 and 34: 33 Supplier Contact Details Hilti B
Page 35: 35 Version 1a—March 2006

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