When the heat is on, you can trust concrete

The fire resistant properties of concrete are well known and in a world that can be devastated by fire in an instance, architects and planners can never underestimated the benefits of specifying concrete over more flammable materials. Concrete is chemically inert and therefore virtually non-combustible. It has a slow rate of heat transfer, which means that using concrete retaining walls around your property can act as a fire shield. But what about fires in our sewer system? It is true that they are rare but would you want to risk it? With damages to property and personal lawsuits, the repair bull can run into millions. The American National Fire Protection Association is dedicated to promoting the science and improving the methods of fire prevention and protection published Bulletin NFPA No 328 which states “Manholes, sewers and similar underground conduits have long been recognized by fire protection engineers as constituting areas where fire and explosion hazards of some severity may exist. Modern civilization, accompanied by the increase number of fuel stations, solvent disposal operations, dry cleaning establishments, fuel gas production and distribution facilities, refrigeration plants and many other industrial activities with potentially dangerous gas vapor by-products make the safe operation of underground structure more difficult each year.”

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