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SteelStructureConstructionSchemeⅠ.AbriefaccountofsteelstructureworkTherewillbe68tbridgetravelingcranesinproductionhall,weldingH-sectionsteelcolumnandbeam,structuralmainmaterialisQ345B,coldbendingsheetsteelZ-purlin,wallandroofcladdingaredouble-skinpressedsteelsheetandthermalinsulationwool.Ⅱ.CharacteristicofsteelstructureworkThesinglespanoftheworkis18m,theheightofsteelcolumnislarge,singleframeplaneexternalrigidityisverysmall,sothekeypointofsafetytechnicalcontrolistoguaranteethestabilityoutsidethestructuralplane.Takeout6steelcolumnsfromgridline9~14intheproductionbuilding,insteadof52.5mspacetrussastrimmerbeamtosupporttheupperstructureandcraneload,theinstallationofthespacetrussisadifficultypointofthiswork.Ⅲ.FabricationofsteelstructuralmembersTechnicalpreparationspriorfabrication1.Studyandcheckthedesignworkingdrawingbeforefabrication,makeshopdrawingandgetapprovalfromdesignerthenpreparematerialforfabrication.2.Makeaplanandprogramforfabricationasperthetype,quantityandmaterialofthestructuralmembers.3.Writeconstructiontechniquesandtechnicalmeasures,andtheequipmentregularexamineandmaintainplan,keepthemachineryingoodcondition.Materialrequirements:1.Selectandconfirmthematerialfortheproject.2.Allkindsofmaterialshouldbewithqualityguaranteeandex-factorycertificate.Ifthereisanydoubt,samplingexaminationshouldbetakenaccordingtorelevantnationalstandard,onlywhenpassedtheexaminationmaterialinbatchescanbeused.3.Rustdegreeofsteelsurfaceshouldconformtothepresentnationalstandard<rustandrustremovaldegreebeforepainting>.4.Jointingmaterial(weldingrod,solder,flux),highstrengthbolt,andcoating(undercoatandtopcoating)shouldbewithex-factoryqualitycertificateandconformtothedesignandnationalstandard.5.Iftheskinofweldingrodispeeledofforthecoreisrust,weldingfluxiswettingandagglomeratingormelting,thehighstrengthboltisrust/damagedortakenfromdifferentbatches,thesematerialsarestrictlyprohibited.6.Anti-corrosionpaintshouldconformtothedesignandrelevantstandard,andwithqualitycertificateandoperationinstruction.Equipmentandtoolpreparation1.Checkandmaintainthefabricatingequipmentinadvance.2.Thefabricatingtoolsandmeasuringinstrumentshouldbewithcertainaccuracy,andbeexaminedandmarkedbythemeasurementtestingdepartmentregularly.3.Weldershouldbearingthequalificationcertificate,anddotheworkwithinthescopestipulatedincertificate.Iftheweldingworkstoppedmorethan6months,theweldershouldbere-examinedandpassedtheexamination.KeypointsofsteelstructuralmemberfabricationweldingweldingadjustmentpartassemblyIntegralassemblyEndmillingweldingadjustmentEndmillingPuchingRust-removalAnnealingtrPainting&packingSemi-readyproductstoragebendingEdgemachiningPunchingandboringSecondmaterialutting割Ex-factoryloftingRawmaterialcalibrationCutting,punching,sawingsawingGascuttingSparepartsstraighteningassemblyweldingadjustmentⅣ.SteelstructureinstallationmethodPreparationspriortoinstallationAspertherequirementofsteelstructureinstallation,beforeinstallationworkstarted,itisneedtocheckandclearthesite,insuretheaccessforhoistingissmoothandfirm,andconstructionpowerisready,thefollowingworksarealsoneedtodosimultaneously:1.Surveythehorizontallevelandaxialdeviationoftheallgroupsofembeddedbolts,makerecordsforthehandingoverwiththecivilworkteaminwriting.2.Thesincethequantityofstructuralmembersislargeandhasagreatvariety,itmustbenumberedandconfirmedtoavoidmis-placed.3.Makenecessaryinspectionandacceptancejointlywiththeemployerandsupervisorbeforeinstallation.Transportationandstorageofstructuralmembers1.Transportstructuralmembersbyappropriatevehicleasperthegeometricdimensionandunitweight,makenecessarysoftmatandbindingduringtransportation.2.Whileloading/unloadingandmovingthestructuralmembers,itmustbehandledgently.Insertspacerwhilenecessarytoavoiddamagethepainting.3.Someonemustbeputinchargeoftransportationandstorage.Structurehostingandinstallationmethod1.ConsiderationaboutinstallationofsteelstructureThetypethestructureinthisprojectisastandardportal-framedstructurewithmovingcranebeam,externalrigidityofasingleframeissmall,thesequenceofmobilizationofstructureisstartfromgridline1,firstinstallsteelframeatgridline1~2,bracingtocolumnandroofinstalledandadjustedsimultaneouslytoformastablespacesystem,thenmovedtogridline29.SteelcolumntobehoistedandinstalledthroughSinge-Crane-Rotating-method,thesteelbeamtobehoistedthroughTwo-Crane-Lifting-methodafterassembledontheground.TrusstrimmertobeassembledwithboltsonthegroundandhoistedthroughTwo-Crane-Lifting-method.Spacebetweencranebeamandroofpurlinis3.5m,itisenoughforminimumhostingspace,andcanbedoneafterthestructureinstalledoralternatedin.2.HoistingandinstallationandadjustmentofsteelcolumnSteelcolumntobehoistedthroughRotatingMethod.Someonemustbeinchargeofhoistingandinstallation,safety,qualityandtechnologytobetalkedoverindetailsbeforehoisting.Fortheefficienthosting,whilepilingthecolumns,putthebindingpoint/columnfootingcenter/basecenteratasamearc.Whilethecolumnisbeinghoistedslowly20cmabovethefloor,stophoistingforawhiletochecktheslingandcrane,opentheswingbrake,thenputthecolumndownat40~100mmtotheinstallationplane,aligntothedatumline,directthecranedescend,insertthecolumntotheanchorboltandfixedtemporarily,tiethecolumnattwodirectiontostablethecolumnstructure.Afterinitialadjustmentofthecolumn,onlywhentheverticaldeviationcontrolledwithin20mmthencanremovethehookofcrane,checktheverticalitywiththeodlite,anydeviationtobeadjustedimmediately,whileadjustmentisbeingdone,observethebottomandlevelcontrolblocktoavoidhorizontalleveldeviation.Verticaladjustmentofthecolumn,fixtwotheodlitestothelongitudinalandtransverseaxis,firstaimatthecolumnbottomwingorcenterlinethenmoveupwardtothecolumntop,ifthecenterlinedriftedoffthelineofsight,toadjustthetieropeorsupport,makethecolumntobeverticalthroughprying.Usuallytoerectarowofcolumnsfirstthentodoadjustment.Atthattime,twotheodlitescanbeplacedatonesideoflongitudinalandtransverseaxis,deviationtothecenterlinenotmorethan3m.whilehoistingrooftrussorinstallingverticalmembers,thesteelcolumnmustbere-checkandadjusted.2.Hoistingandinstallationofsteelbeam3.Afterthesteelbeamturnedoverandpositioned,trialhoistmustbedonerepeatedlyandbondagain,whiletrialhoistisbeingcarriedoutitmustbeliftedslowly,thebeststateisthatuniformforceateachpointandthebeamwillnotdeformed,thentohoistandrotatetothedesignedposition,pullthecontrollingropebuckledonthebeaminadvancebyhandontheground,rotatingtotheposition,fixthecolumnandbeamconnectingholewithhighstrengthbolt.Sincethefirsthoistedbeamlengthis46m,5guyropesshouldbetied,whilefixingit,checktheverticalitywithpendant.Thesecondandtheafterbeamstobefixedtemporarilybytheroofpurlinandtiebeam..4.Re-checkthecolumnwhilehoistingthebeam,normallyusethechainblockandsteelwirerope,theropetoberemovedtillthebeaminstalled.Thesteelbeamridgelinemustbecontrolled.Makethedeviationbetweenthetrussandthecolumnendscenterlinebeequal,sothatalltherooftrusstobeatasamecenterline.TheconnectionofthehighdensityboltMaterial1.Thebolt,nutandwasherswillbeaccompaniedwiththequalitypasscertificateofwhichiscompliedwiththenationalstandardandthespecification.2.Thebolt,nutandwashersshouldbeinuniform.Thethreadshouldnotbeworn-out.Itshouldbeincleananddrystateandbekeptinthestorageaccordingtothespecification.Preparationtotheboltbeforeinstallation1.Checkeachpartoftheinstallationisinrightpositionandmakesurethattheinstallationiscomplywiththe“Regulationforcheckandacceptancetothequalityofsteelstructurework”codeno.GB50205-20012.Checkthemainmaterialwiththeholeiscorrectindiameterandthesize.Makesurethatthesmoothismetthespecifiedrequirement.Ifthereisthreadonthemainmaterial,weimmediatelyremoveit.3.Weshallfamiliarwiththeinstallationconstructiondrawingandprogramscheduleandmakefullpreparationtotheworkspannerandtheotherrelatedequipment.4.PreparationtothemeasuringtoolsTheworkmanship1.Theconnectiontothesteelplatemustbestraight,thesideandholeshouldcontainnothorntomakesurethesurfaceiscloselyattached.Ifthereisthebending,weshallmakenecessaryadjustmentandavoidthedamagetothefractionsurface.2.Beforefixing,weshallcleandirtyoilandpaintontheholeside.3.Beforeinstallation,weshallusetemporarybolttofixinposition,thenumberwillbemorethanonethirdofthetotalnumberfortheconnectedbolt.Themethodispreadjustthesteelholeandputthetemporaryboltinsideandthenusethenuttoscrewit.Therewillbetwotemporaryboltsineachpoint.Notallowedtousethehighdensitybolttobeservedasthetemporarybolt.Afteronesectioniscompleted,thentocheckitandconfirmedthentocarryouttheworkwiththehighdensitybolt.4.Whileinstallthehighdensitybolt,weshallmakesurethatthecentralpositionischeckandnomistakeandthenproceduretheworkofthehighdensitybolt(Thisprojectadoptthedoublenutscrewtight).Thewasherwillbeputononesideofthenutandbesurenotinoppositedirection.Iftheboltcannotbethroughtheholefreely,weshallusetheknifetoadjusttheholeandthenprocedurethework.Itshouldnotusetheforcetogothroughtheholesoastoavoidthedamagetothethread.Cleanthethornafteradjustingthehole.5.Thetightforhighdensitybolt:Thisworkwillbeintwostage,thefirststageiscalledpreliminarytight,thetightforceisabout50%-60%ofthedesignedpre-pullforce.Thesecondstageiscalledthefinaltight.Thetightforcewillreachthedesignedpullforce.Thedeviationwillbelessthan±10%.Thepre-pullforcewillbedeterminedaccordingtothedesignedspecification.Duringthework,thespannerforceformulawillbeTc=k*Pc*dk=0.11~0.15Pc(designedpre-pullforce)d=thediameterofthebolt.6.Checktheturnspacespannermarkrecordandtheboltconstructionrecord.Ifthereisanyquestioning,weshallcheckthepreliminarytightrecord.Qualitystandard1.Thehighdensitybolt’stype,specificationandthetechnicalconditionshouldbecomplywiththedesignedspecificationandtherelatedstandard.Wemustcarryoutthetesttodeterminetheturnspacecoefficientandrecheckboltpre-pullforceandcheckthequalitypasscertificateandthetestreport.2.Theconnectionsurfacefortheboltinfrictioncoefficientwillbecompliedwiththedesignedrequirementandtherelatedspecification.Onitssurface,thereshouldbenorust,thorn,weldingremaining,dirtyoilandpaint,etc.3.Thehighdensityboltmustbetightintwostage,thequalityofthepreliminaryandfinaltightshouldbecompliedwiththeconstructionregulationandtherelatedspecification.4.Thehighdensityboltwillbeputthroughinthesamedirectionandthethreadringsshouldlessthan2rings.5.Thefrictionsurfacebetweenshallcompliedwiththedesignerandtheregulationforsteelstructurecheckandacceptancerequirement.ItemstobetakeninconsiderationduringtheinstallationforhighdensityboltQualitycontrol1.Thesurfacewithrust,dirtyoil,thornandweldingremainingshouldbecleaned.2.Aftertreatingthefrictionsurfaceshouldbereachedtheantislidecoefficientrequirement.Theuseofthehighdensityboltandthenut,washersshouldbeuniformandbeusedatthesametimenotallowedtoexchange.3.Treatthepart’sfrictionsurface.Whileinstallation,therewillbenodirtyoilandsoil,etc4.Whileinstallationthepart,thefrictionsurfaceshouldkeepdryandavoidtoworkinrain.5.Beforeinstallation,weshallcheckandrechecktheconnectedsteelplateandmakenecessaryadjustmenttothebending.6.Whileinstallation,weshallnotusethehammertohitthebolttoavoidthethornoftheboltbedamaged.7.Weshallcheckandmeasurethespannertimelytothepreliminaryandthefinaltightofthehighdensitybolt.Weshallmakesurethepreciseanddothenecessaryrecord.Thetightworkwillbecarriedoninrightprocedure.Majorsafetytechnicalmeasures1.Tousetheflexiblespannerthesizewillfitthenut.Whileworkhighabovetheground,weshallusethefixedspanner.Ifweareusingtheflexiblespanner,weshallbetiedwithsafetybelt.2.Whileassemblethesteelparttoconnectthebolt,weshallavoidtousethehandintestingthescrewhole.Thehandwillbeonthesideofthesteelplate.Ⅴ.TheroofpanelinstallationmethodTheinstallationofthecolorsteelsheetcomposedofthedetailedpartdesign,productionsequence,transportandinstallation,etc.Everypartoftheworkandthemethodisthekeylinktotheproject’scompletion,safety,andquality.Theinstallationworkwillbecarriedoutafterthesteelstructureworkhasbeencompletedwiththeformalityofthecheckandacceptcertificate.DetailedpartdesignworkThispartofthedetaileddesignplaysakeyroletotheinstallation.Weshallmagnifyeveryconnectionpointontheoriginaldrawingsoastoinstructtheworkandworkmanshipprocedure.Thefollowingsarethemaincontentforthedetaileddesign:1.Theroofcoveragearrangement2.Theconnectpointenlargedrawing(includethetreatmenttogutter,thejoint,facialandflush)3.DetailedpartdesignflowProject→constructionjointdesign→editdrawing→check→audit→sent→issuePreparationforthecolorsteelsheetinstallation1.Beforetheinstallationofthecolorsteelsheet,weshallcheckthesizebetweenthestructureparts,thelevelandthequality.Ifthereisanybendingonsteelstructureparts,weshallcarryouttheadjustmentworkimmediately.2.Beforetheinstallationofthecolorsteelsheet,weshallcheckthosealreadyinstalledcoolbendthinplatepartofwhichshouldnotbeheavyloadedorwelded.3.Beforetheinstallationofthecolorsteelsheet,weshallmakesurethatthepullpoleorthepresspolearetightandthepurlinareinrightposition.Thetwistedangleforprulinshouldlessthan3°.4.Beforetheinstallationofcolorsteelsheet,weshallcheckallthecoolbendedstructurewhetherthepartsaretreatedwiththerustprotected,fireprotected,convenientforinspection,brush,paint,avoidwatercollectedandsealedtheendofthesteelstructurepart.5.Thetemporarystackforcolorsteelsheetshouldbearrangedaccordingtothegeneralconstructionlayouttoputinposition.Weshallprepareasolidcompacted,flatareawithgooddrainagesystemandconvenienttransportationforcolorsteelsheetandtemperaturereservecotton.Weshallalsomakesurethattheareawillhavethemeasurestobecoveredwithplasticclothetoprotecttherainwater.6.Weshallmakesurethattheinstallationtools,equipment,protectitems,connectparts,propandtheaccessoriestothecolorsteelsheetarefullyprepared.Allthesewillbetestedandqualified.Theseitemswillbeinstoragewithafulltimepersontolookafter.7.Weshallmakesurethatthestaffwillbefullyunderstandthetechnical,quality,safetyoftheworkbeforeundertakingtheroofinstallationwork.Weshallmakethemfullyunderstandtheconstructiondrawings,workmethod,safetyoperation,qualityrequirement.Weshallrechecktheaxisfortheinstallationparts,thelevel,etc.TheinstallationmethodofColorplate1.Theinsttallaationnofrooffpannelsstarttedffromthegablle.SSurveeyanndseetadatuumpoositiioninngliineaatthheloowerendofrroofinaadvanncettoguuarannteetheaccuuracyyofinsttallaationn,thheniinstaalliinorrder..2.Checckthherooofppanellinlenggths(norrmalllyteenpaanelss)duuringginsstalllatioon,ttochheckthestraaighttnesssofthetwoendofttheppanellanddtheeparralleelismmtoavoiidthhatiitwiillbbeinnclinnedoorfaan-shhapedd.Neecesssaryadjuustmeentttobeedonneduuringginsstalllatioon,mmicroo-adjjustmmenttobbedooneoonebbyonnetoomeeetthhereequirremenntoffquaalityy.3.Joinntoffrooofpaanelinllengtthdiirecttionwilllbeoverr-lapppedontthebbraciingmmembeers,lapppinglenggthiis2550mm..4.Reliiableeseaalantttobeddonetollapaatthheleengthhdirrectiionoofthherooofppanell,siilicooneoorweeatheersttriptobbefiilleddattwoendss,155mmaaparttfroomthhepaanelend..Bottoompaaneloverr-lapppingglenngthis880~1000mm,,seaalanttmigghtnnotbbedooneaatovver-llap.5.Leavve500mmggapbbetweeenttwoppanellsattriddge,itiisprreferrableetobentttheepanneluupwarrdatt80”toformmafflashhing..Theepreesseddsteeelppanelltobepprojeectedd1200mmaatguutterr,beentddownwwardat110”toformmaddrip..6.Overr-lappofflasshinggboaardnnotllessthann1000mm,withhenooughwidtthanndroolleddedgge,sspaciingoofjoointssnottmorrethhan550mm..Seaalantttobeddonetooover--lapforwateer-tiightnness..7.Atrroofridggeanndinnterffacebetwweenuppeeranndloowerspann,fllashiingaandrroofpaneeltoobejoinntedbyoover--lap,,lappnottlesss2000mm,,inssertwateerprooofcclosuureiinlaap.Ⅵ.Wallpaneelinnstalllatiion1.Walllpannelttobeeinsstallledppriorrtorooffeavvesggutteerwiithsspeciialppurpoosehhoisttingandclammpinggappparattus.2.Thefirsstwaallppanelltobeiinstaalleddasperthegablleouutsiddecoornerrlinne,uusettheoddliteeanddorpenddanttoffixttheddatummlinne.3.Screewtoobefixeedtootheetoppanddbotttomendoftthewwallpaneelfoorteemporraryposiitionning,,wheenagrouup(aaboutt10))ofpaneelsllaidandadjuustedd,faastenntheescrrewttothhewaallppurliin.4.Markktheepossitioonoffscrrewbbetweeenwwallpaneelanndpuurlinn,ittshoouldbeeeventottheppurliinanndbeeuniiformmlyaarrannged..5.Insttallthepaneeltoobeoverr-lapppedinllengtthdiirecttfroomboottommtotop,,theeoveer-laaptoobearraangeddattheposiitionnwalllpuurlinn,innterpaneelovver-llappiingllengtthiss80-100mmm,oouterrpanneloover--lapppinglenggthiis1220mm,,seaalanttmigghtnnotbbeneeededdatoverr-lapp.6.Insppectiionttobeedonnebyyrooomsfforwwallpaneel,uusettheoddliteeorhanggtheepenndanttatcoluumnccenteerliinettosuurveyytheeverrticaalityy.7.Gabllepaanelsstobeccutaatdiifferrentlenggthaaspeerthherooofppitchh,thhenttoinnstalllitt.Adddenndcllosurretoogabbleeeaveflasshinggifneceessarry.8.Gabllefllashiingttobeedonnesttarteedfrromeeaveupttothheriidgeafteerthherooofaandwwallpaneelinnstallled..Outtsideecorrnerpaneeltoobedownnfroomboottommtotop,,rivvetttobeeuseedfoorthhejoointsstowalllpannel,spaccingasppertthettechnnicallreqquireementt.9.Doorranddwinndowflasshinggstaarteddfroomtooptootheetwoosiddes,usewalllpurrlinorddoor//winddowfframeeforrfixxing..Ifitiistoobeconnnecteedtootheepreesseddplaate,useriveetfoorjooint..Flaashinngattopeeninggonwalll,itt’stooptoobeinsttalleedinnsideetheewalllpaanel,,botttomoutssidethewalllpannel.Toffixtthewwallpaneelanndfllashiingttothhewaallppurliinwiithsself--tapppingscreew.10.Joiintsbetwweenflasshinggstoobesealledwwithsiliiconee,anndiffwroongsscrewwholleoppeneddonthewalll,ittmusstbeefillled..Ⅶ.FirepprooffingcoattingPreparattionss1.Toffulfiilltthehhighrequuiremmentofaappeaarancce,aandttheccoatiingmmustbeffirepprooffingaspperttheddesiggn,ssothhetoopcooatinngtoobedoneewitthnoon-aiirsppray--onmmethood.2.Thefireeprooofcooatinngshhoulddbewithhex--facttoryquallitycerttificcateandex-ffactooryccertiificaate.3.Befooreffirepprooffingcoattingdonee,thhesuurfacceoffstrructuuralmembbersshouuldbbefrreeffromrusttandddusst.AApplyycommplemmentaaryaanti--rusttunddercooatttothheexxposeedarreaoonthheinnstallledstruucturralmmembeersaandjjointts.4.Checckthhereeceivvingsurffacebefooreccoatiing,tosseewwhethheriitissfreeefrromrrust,,oill,anndduusteetc.Makeesurrethhemaateriial,,macchineeryaandsscafffoldiingaarerreadyy.WorkinggproocessschaatReceivinngsuurfacceclleariing→appllyunndercoatt→dryiing→repeeataaspeerprroducctreequirremennt→filller→grinndingg→spraayfiireprroofcoatting4laayerss(meetalglosss)Technollogiccalooperaationnmaiinpoointss1.Toggetggoodadheesionn,thhicknnessofddryffilmofttheffirsttlayyeroofcooatinngshhoulddbenotmoreethaan2000μm,affter24hhourssappplynnextlayeer,ttheaafterrlayyersthiccknesssnootmooretthan300μmtofulffilltherequuiremmentofffirepprooffinglimiit.2.Spraayinggdisstanccetoobeconttrollledwwithiin3000~3880mm,,sprrayinngraange30~550cmforlarggeobbjectt,100~30ccmfoorsmmallobjeect,normmallyyitis330cm..3.Angllebeetweeensppraynozzzleaandttheoobjecctsuurfacceiss30°°~80°°,spraayguunruunninngsppeedis00.1~11.0m//minPointsforatteentioon1.Onppreseentmmarkeet,tthereeareevarriedkinddsofffirreprooofccoatiing,appllyinggmetthodisbbasiccallyytheesamme,bbuttthetthickknesssshoouldrefeertootheeprooducttdirrectiionaandttestiingrreporrtisssueddbygoveenmenntfiirefiightiingddeparrtmennt.2.Enviironmmentrequuiremmentforcoatting::theeairrtemmperaatureeshoouldbeaabovee3℃,cooatinngshhoulddnottbedoneeouttdoorrifitrrainss,coondennsatiionoofsuurfacceorrairrhummidittyexxceedd85%%.3.Afteerlaastllayerrofundeercoaatfiinishhed,scraapinggtheesurrfacee,anndthhenffolloowedby44layyersofssprayyingcoatting..4.Whillecooatinngbeedonneonntheegroound,,leaavetthemmarkofnnumbeerofftheestrructuuralmembbers..Connsideeringgspooilaandddamaggemaayocccur,,leaaveccertaaintthickknesssforrtouuch-uupcooatinnghiighaaboveetheegrooundtommatchhtheecollor.Acceptaancestanndarddofquallity1.Therreshhoulddbenommistaake,missses,,peeelingganddrusstingg.Theccoatiingsshoulldbeeuniiformmnoobviiousriveelingg,ruuns,airbubbblesetc..2.Thesecoondllayerroffireeprooofcooatinngmuustbbeappplieedonnlywwhenthefirsstlaayergetdrieedcoompleetelyy,ottherwwiseitwwillberrivelling,,peeelingg.It’sthhicknnesstobbeteesteddanddacccepteedassperrtheeprooducttdirrectiionaandttestiingrresulltisssueddbyquallifieedfiirefiightiingddeparrtmennt.3.Coveerthhecooatinngwhhichisnnotffilmeedwhheniitraain,coveerthhepaainteedsttructturallmemmberssoranyotheerpaartwwhichhmigghtbbesppoileedwiithPPVCmmembrrane..Ⅷ.SafettyguuarannteemeassuressSafetyworkkingmeassuress1.Allconsstrucctermusttbeabiddesttricttlybbynaationnalssafettyruulesandreguulatiions,,makkeseelf-pproteectiooncoonsciientiiouslly.2.Allconsstrucctermusttbetraiinedandeduccateddwitthprrofesssionnalssafettyknnowleedge,,anddgotowworkiingbbeariingttheccertiificaate.3.Appoointfullltimmesaafetyysupperviisortotthessite..Apppointtfullltiimessafettyaddminiistraatortoeeachworkkingteammtoformmaeeffecctiveesaffetynetwwork...4.Arraangediffferenntsaafetyymeaasureestoodifffereentwworkss,maakerrecorrds,orgaanizeeinsspecttionss.Safetypoinntsfforaattenntionnatconsstrucctionnsitte1.Firmmlyccarryyouttnattionaalsttipullatioonoff<Saafetyytecchniqqueooperaationnrullesoofbuuildiingaandiinstaallattion>>2.Streengthheninngsiitecconsttructtionmanaagemeent,consstrucctinggroaadtoobeleveel,ssmootth,aandhhardeened,,matteriaalanndsttructturallmemmbersstobeppileddanddstooredstabblyaandiinorrder..3.Nossmokiingoonsiite,inwworksshopandtempporarrywaarehoouse,,equuipwwithfireefighhtinggdevvice..4.Provvidesafeetypproteectiooncooverandgrouundpproteectioontooeleectriicalequiipmennt,ssomeoonemmustbepputiinchhargeeofmachhineoperratioon,eeachmachhinetobbeinnstallledwithhaeelecttricshocckprrotecctor..5.Provvidesuffficieentpproteectivvegllassees,mmaskandsafeetysshoesstostafffonnsitte.6.Allmateeriallanddstrructuuralpileedanndsttoreddstaablyandinoorderrinpropperpplacee.Sttructturallmemmberssmusstbeefixxedwwhileepillingandasseembliing,nowwalkiingaaheaddtothemoviingmmembeers.7.Pryupoobjecctwiithhhandss,ittisprohhibittedttoriideoonthhecrrowerranddcarrryttheccroweerunnderarmss.Doonottoveerexeertooneseelfwwhileeusiingccroweerwoorkhhighabovvethhegrroundd.8.Checckthhesppringgboaard,scafffoldding,,swiinginngsccaffoold,scallingladdder,ropeeanddsaffetynetttingetcprioortooworrkhiighaaboveetheegroound..9.Noooneaallowwedttogoointtothhehooistiingssite,,donotstanndunnderthecrannecaantilleverr.Thhehooistiingddirecctorcannotstanndahheadtotthehheavyyobjjecttobbehooisteed.RRunniingsstabllywhhilehoisstingg,thhehoookccanbbereemoveedonnlywwhenthehoisstedmembbersinpposittionandfixeedteemporrarillyorrconnnecttedrreliaably..10.Wheenthhewiindsspeeddreaachess10mm/s,ppartofhhoisttingworkkshoouldbesstoppped,whennitreacches15m/ss,alllthhewoorkmmustbesstoppped.Nowweldiingooutdoooriinraain.Checckthhesttructturallmemmberssaftterrrainandwinddmakkesuuretthebblinddingandsuppportbeffirm,,sliip-reesisttanceeworrkneeedttobeedonne.11.Cleeartthessiteafteereaachsshiftt,keeepttherroadsmoooth,cutoffthepoweeraffterworkk,chheckthewworkiingssiteafteerwoorkmmakesureenofireedanngeroous.Safetyofcconsttructtionelecctriccity1.Makeetemmporaarycconsttructtionelecctriccityorgaanizaationndessignoreelecttriciityssafettyteechniicalmeassuressanddfirreprooofmmeasuures..2.Estaablisshsaafetyyeleectriicityysysstem..Sellectexpeerienncedproffessiionalleleectriicianntothesitee.3.Consstrucctionneleectriicityyistobbearrrangg
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