Guide to Safer Roof Framing Final

DevelopmentAct1993

Minister’sSchedule5roofframingchecklist

DevelopmentApplicationnumber: / 455/
Applicant:
Siteaddress:

Part1–Processandcommunication

Software

StructuraldesignsoftwareinaccordancewiththeABCBProtocolforStructuralSoftware
Checkthattheprogramisbeingusedwithinanylimitations

Structuraldesignreport

Nameandsignatureofpersonproducingstructuraldesignreportfromtheprogram
Checkdesigninputsforloadingconditions
Checkthesuitableselectionandapplicationofanydiscretionaryparametersin relevantAustralianStandards
Checkthatthepersonwhoproducedandsignedthereporthasbeentrainedintheuseofthesoftwareprogram

Trussdetails

Elevationofeachtruss,showingdimensions,layoutofmembers,connections,support points,andwebbracing(ifany)
Webtie/webbracedetails
Detailsoftrussesortrusselementsrequiredtobelaminatedtogether(ifany),including thefastenerspattern

Layoutplan(s)

Separateroofframe,wallframe,floorframelayouts
Nameandsignatureofpersonproducinglayoutplan–oneachlayoutPlan
Alltie-downs,bracingandtruss-to-trussconnections,andcriticalloadpathsshown
Checkforgirdertrussesandanyloadtransferpointstosupportingframingthroughthe structure
Checkthatthepersonwhoproducedandsignedthelayoutplan(s)hasbeentrainedin theuseofthesoftwareprogram
Ifthelayoutwasnotproducedbythenailplatesupplier’ssoftware,checkthatthe layoutissignedbyapractisingstructuralengineer

Hybridroofdesign(combinationofrooftrussesandconventionalframing)

Dorooftrussesorconventionalframingrelyoneachotherforsupportorstability?

Yes or No ifYes…

Hasthesoftwareprogramaccountedfortheloadsandconnections?

Yes or No ifNo…

Designandlayoutcertifiedbyastructuralengineer

Additionstobuildings

Doesthenewroofrelyontheexistingstructureforsupport?

Yes or No ifYes…

Evidenceofsuitabilityoftheexistingstructuretosupportthenewroofprovided

Part2–Truss/framinglayout

Therooflayoutmustincludethefollowingitems:

(Crossoffallitems NotApplicable,detailstobespecifiedondrawingsforallremaining items)

Trusslocations: spans,stationfortruncatedgirdertrusses
Girdertrusspositionandgirderbootdetails
Topchordbracingdetails: layoutandfixing
Topchordrestraint:purlin/battenfixing,spacing,purlinsplicedetails
Intermediatetopchordties(valleytruss–sheetroofonly)
Bottomchordrestraint (spacingandsizeofrestraint)
Bottomchordrestraintbracing:suspendedornoceiling
Hipendframing: loosetimberorjacktruss
Tie-down location/details
Location of special loads: solar heating, air con., HWS, 1fire service, other
Overhangs: eavedetail(supported,notsupported)structuralornon-structuralfascia, vergedetail
Gableendtrusssupportedonendwallorfreespanning,verandah,pergola.
Trussconnections: hipends,girdertrusses,valleytrusses,nonload-bearingwalls
BearingwidthseeAS4440-2004,AppendixBSectionB4(p.56.)
Internalsupport/tie-down
Trussesortrusselementsrequiredtobelaminatedtogetheronsite(egdoublegirder trusses,chordstiffeners,etc)shallbeshownontherooflayoutplan
Supportingstructure:separatewallframelayoutindicatinglocationsanddetailsof supportforconcentratedloadssuchasgirdertrussesorbeams

Part3–Designcriteria

Asshownontrussengineeringdatasheetssubmitted,withcoversheetsignedanddatedby anappropriateperson

BuildingType: / Residential
Commercial / Doesthescopeofthetrussdesignmethodincludedesign ofcommercial/post-disasterbuildings?
Post-disaster
DesignCriteria / Unit / Specified / Accepted
Roofing / Materialorkg/m²
TopChordRestraintSpacing / mm
Ceiling / Materialorkg/m²
Ceilingbattenordirectfix / BattenorDirect
Bottomchorddesignrestraintspacing / mm

______

1Ifcommercialorpost-disasterbuilding,checkthatthescopeofthetrussdesignmethodincludesdesignof

commercial/post-disasterbuildingsasappropriate.

DesignCriteria / Unit / Specified / Accepted
Windclassification / N1toN4,C1toC3
InternalPressureco-efficient / (Cpi)=0.2or0.7
TrussSpacing / mm
RoofPitch / degrees
BottomChordPitch(ifapplicable) / degrees
TrussOverhang / mm
Eavessupportedbywallstructure / YesorNo
StructuralFascia / YesorNo
SpecialConditions(e.g.trussesoverswimmingpoolorinacorrosiveenvironment)
GirderTrusses–Specifytypeoflateralrestraintfixing(eg.battens/purlins orother)
SpecialLoads: / Unit / Specified / Accepted
WaterTank / Litresorkg
SolarSystem / kg
Air-Conditioning / Kg
Others / Kg

Thetrussdesignanddocumentationsubmittedforbuildingrulesconsenthavebeenchecked againsttheitemscontainedinthischecklist,andacceptedby:

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