OMM13400 Firesafe Issue3_V5.pdf - OneSteel

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OMM13400 Firesafe Issue3_V5.pdf - OneSteel

This building consists of threelevels and includes retail outlets; adeparture lounge, an arrival lounge,baggage handling, and baggagereclaim areas. There are alsoadministration areas and gatelounges. According to the BCA, thebuilding is a mixture of Class 9 andClass 6 and would be required to beconstructed as Type A construction.A section through the building isshown below.Steel-framed construction waschosen to allow ease of constructionand to deliver the desired architecturalfeatures.OneSteel’s fire engineers CesareVU assessed the fire safety aspects ofthis building relating to the structuralsteel. Their report indicated thatthe building should be designed inaccordance with reference [2] (seeIntroduction). It was agreed by thestakeholders in the fire engineeringprocess that the building need onlybe generally designed to resistthe range of possible sprinkleredfires. This design assumption wasconsidered to be satisfactory on thebasis that sprinkler managementand maintenance procedures weredeveloped and implemented tominimise the frequency, extent andduration of sprinkler isolations andto ensure that during such isolations,particular fire-safety measuresare put into place to minimise thelikelihood of a significant fire.It was recognised that airportterminal buildings are highlysupervised buildings where occupantsare likely to detect fires relativelyrapidly. Most fires will be extinguishedbefore the sprinklers are activatedand will be assisted by the availabilityof portable extinguishers andappropriate training of airport staff.The airport fire brigade was alsonoted as being close at hand. Theisolation management procedure isto be aimed at managing sprinklerisolations so as to minimise the likelihoodof a serious non-sprinklered fire.On the basis of extensive sprinklertesting it was established thatsprinklered fires would not result ina significant increase in temperatureof exposed structural steel members.In several areas it was noted thatcolumns pass through parts of thebuilding with high ceilings whereactivation of sprinklers on the ceilingswould be likely to be delayed. Partsof the building where such situationsmay occur include areas such as thedeparture and arrival areas. It wasnoted that the fire load in these areaswas localised and given the exposedsurface area-to-mass ratio of the300PLUS® columns passing throughthese areas would not result incolumn failure if subject to a localisedfire before sprinkler activation.OWNER/DEVELOPERAdelaide AirportLimitedPROJECT MANAGERBarry Phillis &AssociatesARCHITECTHassellADELAIDE AIRPORT TERMINAL – FIRE RESISTANCE REQUIREMENTS SUMMARYBUILDING ELEMENTDTSELEMENT REQUIREMENTAlternative Solutioncolumns FRL 180/-/- (retail) generally no requirement; inFRL 120/-/- (other areas) high roof areas sufficiently lowk sm* to survive localised firebeams FRL 180/-/- (retail) no requirementFRL 120/-/- (other areas)floors 180/180/180 (retail) 60/60/60120/120/120 (other areas)sprinklers YES YESSTRUCTURAL ENGINEERWallbridge & GilbertD & C CONTRACTORHansen YunckenBUILDING SERVICESENGINEERBestecBUILDING CERTIFIERAirport BuildingController*k sm is the exposed surface area-to-mass ratioFireSafe : Fire Safety Engineering by Design | Page 5

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