Fire Bunker Australia

Security Firestorm Shelters

Our units are an engineered concrete precast structural design and manufactured in a seamless mould in our factory. All units are produced using a very high slump 50mpa concrete mix design. They are designed to with stand applied loads against walls and lid. The unique way the unit is manufactured ensures there is full coverage of the structural steel cage, no air entrapment in the concrete, this assists in preventing spalling of the external unit especially when exposed to such extreme heats in fire storms. As a rule concrete has inherent fire resistance and is a material ideally suited to providing fire safe construction.

Concrete is non-combustible and emits no toxic fumes. As concrete is a good insulator, the concrete temperature will usually be much less than the flame temperature. As the concrete temperature rises, it progressively loses moisture and gradually loses strength. The loss of strength is greatest at concrete temperatures above 450- 600 o C (the exact temperature depends on the aggregate type). Wet or moist concrete can spall in a fire, due to the build up of steam pressure within the concrete, leading to separation and loss of the surface layer. In most fires, concrete will retain its structural integrity and the structure can be successfully repaired. Under Concrete structures AS3600-2008 BCA- 2008 Section 5.7.2 insulation for walls – our concrete mix design as well as the wall thickness and concrete steel coverage offer fire resistant period for insulation or ability to maintain temperature on the surface for 30-90 minutes.Our units are structurally designed to withstand to carry 5kpa vehicle loading along with and extra 3.5kpa applied loading and access dynamic load standards AS1170.1-4.-2007 Ideally designed to withstand natural earth placed against the walls of the unit. This offers an excellent natural form of insulation against a firestorm.This method also protects the building material from spalling under intense heat and stops them from losing their integrity and effectiveness. The use of scoria rock against the walls and on the roof can also increase the insulation. If you plan to place the fire shelter into a sloping site, It is important that the site is well drained, for example with the use of slotted ag line around the base, leads the water away.

Please note that the fire shelter is not intended to be a substitute for sound safety practice, but a refuge in the event you and your family feel under threat and cannot escape the firestorm.

Fire Doors and Hardware

All doors, smoke seals, jambs, hardware and frames are all 240 min fire rated unless requested otherwise.

The external fire doors are solid fyre core doors with a further steel coating inside and out.

Fire Inspection doors are manufactured to AS2688-1984 and installed by a Commercial door company as per AS1851.1 Part 7 -1984 all doors come with fire door certificates..

Door hardware consists of classroom lever door sets (door set that prevents internal locking inside the shelter) which offer 4 hour fire resistance plus tested smoke leakage rates to AS1530.7 or the requirements of building code of Australia (BCA) 2004.

The fire door includes a fire rated vision panel, fully certified to Australian standards size 450mm x150mm(nom), 6mm wired glass, clear in appearance, 240 min fire rating maximum 65000mm sq visible, grade B safety glass (approved for use in fire doors)

Perimeter seal around the fire door is a Raven RP10 multi finned smoke seal which conforms to BCA specs. C3.4 standards as well as AS1530.7

At the base of the door a 2100 drop down smoke seal is surface mounted at the base of door .The bottom smoke seal is spring loaded to lift clear of floor as soon as the door leaf is opened by a few millimetres. It is operated automatically by pressure against the steel door jamb.

Our Fire Shelters are only a refuge from fires until it passes over. If you plan to stay longer in the fire shelter it would be recommended to have accessible to everyone in the unit a oxygen backup would be advisable. Acceptable levels of Oxygen concentration in normal air is between 19.5% and 23.5,% this will reduce if 4 or more people plan to stay in the shelter for long periods of time..

p: 1300 783 344

e. This e-mail address is being protected from spambots. You need JavaScript enabled to view it