FIRE RESISTANCE

 

FIRE RESISTANCE

SAINT-GOBAIN cast iron is non-combustible, it does not feed the fire, nor gives off either gases or smokes liable to delay fire fighters or damage other equipment.

System Characteristics

PAM-GLOBAL® cast iron pipe systems are flame proof, and have outstanding properties not to spread the fire. This is confirmed by tests carried out both domestically and abroad (C.T.I.C.M./IBMB).

Test certificate No.: P-3725/4130-MPA BS. For high fire proofing requirements in the structural engineering sector, specifying PAM-GLOBAL® pipe systems is the reasonable choice.

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Material Classification

PAM-GLOBAL® pipes and fittings, couplings and accessories –as a whole system- ; according to EN 1561-1, it is A1 class construction material and it is definitely non-combustible.

Fire Load:

Cast iron pipes and fittings are considered noncombustible. Their fire loads do not need to be taken into account. The “Fire load” of a product is defined as follows: it is the quantity of energy released during combustion. It highly depends on the type and quantity of flammable materials used for the product manufacturing. Formerly, a fire load of 7 KWh/m was authorized in emergency corridors. This regulation is no longer applicable due to the general Pipe Systems Guidelines, whereby fire loads are no more permitted on emergency corridors or emergency exits.

Comparison: 1 kg of polyethylene (PE) produces a fire load of 12 KWh. 1 kg of heating oil has a gross calorific value of 11.7 KWh.*

Smoke Development:

In the event of a fire, the PAM-GLOBAL® pipe system remains sealed; smoke that could develop inside the pipes is dissipated via the rooftop main ventilation.

Comparison: 10 kg of polyethylene (PE) or polypropylene (PP) produces approximately 23,000 m3 of highly toxic smoke, consisting of carbon monoxide, carbon dioxide and soot.*

Thermal Expansion:

Cast iron expands very little and does not require specific bracketing nor expansion collars. It makes the specifers’ design work easier and avoids extra cost at installation stage.

The thermal expansion coefficient for cast iron – 0.01 mm/m/°C (Under a temperature change of 50 K, the expansion of a DN 100 pipe of 10 m length is only 5.3 mm.) – is very low and very similar to that of steel and concrete; the building and the pipe systems will move and expand together.