Xa kuziwa ekwakhiweni okanye ekulungisweni kwesakhiwo, ukukhetha izinto ezifanelekileyo zokuphahla sesinye sezona zigqibo zibalulekileyo umnini-propati okanye ikontraki enokuyenza. Phakathi kwezinto ezahlukahlukeneyo ezimisela umgangatho kunye nokusebenza kophahla, ubukhulu bephepha lentsimbi libalulekile. Ubukhulu bephepha lophahla buchaphazela ngokuthe ngqo ukomelela kophahla, umthamo wokuthwala umthwalo, ukuxhathisa kwimozulu embi, kunye nokusebenza kwexesha elide. Ukukhetha ubukhulu obufanelekileyo abukho nje malunga neenkcukacha zezinto eziphathekayo; linyathelo eliphambili lokuqinisekisa ukuba uphahla lusebenza kakuhle ekuhambeni kwexesha kwaye lunikezela ngembuyekezo eyomeleleyo kutyalo-mali.
Amashiti okufulela esinyithi afumene ukuthandwa okukhulu ngenxa yobume bawo obukhaphukhaphu, ubomi obude, kunye nokuguquguquka. Nangona kunjalo, impazamo eqhelekileyo kwiiprojekthi zokuphahla kukujongela phantsi ukubaluleka kweshiti. Abanini bepropathi abaninzi bacinga ukuba zonke iintsimbi zokuphahla zenziwe zilingana, kodwa umahluko weemilimitha ezimbalwa unokuchaphazela kakhulu amandla, ukugquma, ukugcinwa kunye neendleko.
1. IiNkcazelo zokuThinkxa kwePhepha leMetal yophahla oluqhelekileyo
Amaphepha okuphahla esinyithi akhoyo kwiingqimba ezahlukeneyo, ngokuqhelekileyo abonakaliswe ngamanani okulinganisa. Isistim senani le-gauge ngokungafaniyo nobukhulu: ngokusezantsi igeyiji, kokukhona i-sheet iyajiya. Ngelixa ubukhulu be-multiple bukhona kwizicelo ezahlukeneyo, iigeji ezisetyenziswa rhoqo zi-24, 26, kunye ne-28. Ukuqonda iimpawu zegeyiji nganye kubalulekile ekukhetheni i-roofing sheet yentsimbi efanelekileyo.
I-24 Gauge (0.0223 intshi / 0.567 mm)
Icangci yokufulela yentsimbi engama-24 ijiyile kwaye inzima, iyenza ilunge kakhulu kwizakhiwo zoshishino nezorhwebo. Ukutyeba kwayo okwandisiweyo kunika amandla amakhulu kunye nokuqina okuphezulu, okuwuvumela ukuba umelane nemithwalo enzima, imimoya ephezulu, kunye neemeko zemozulu ezinzima. Kwiindawo ezinkulu zemizi-mveliso okanye izakhiwo zorhwebo ezinenkxaso encinci yophahla, amashiti angama-24 ahlala ekhethwa ngenxa yokuthembeka kwesakhiwo. Ngelixa zibiza kakhulu kunezinye iindlela ezinqabileyo, iinzuzo zexesha elide ekusebenzeni nasekugcinweni kokugcinwa kwenza amashiti ophahla angama-24 abe yindleko eyongayo kwizicelo ezifunwa kakhulu.
I-26 Gauge (0.0179 intshi / 0.455 mm)
Iphepha le-26 gauge yentsimbi yokuphahla ibetha ibhalansi phakathi kokusebenza kunye nokufikeleleka. Olu ngqingqwa luqhele ukusetyenziswa kwizakhiwo zokuhlala kunye nezilula zorhwebo, ezinikezela amandla awoneleyo ophahleni oluqhelekileyo ngelixa luhlala lulula kwaye kulula ukuphatha ngexesha lofakelo. Abanini bezindlu kunye neekontraka zihlala zikhetha amashiti angama-26 okulinganisa kwimizi yentsapho enye, izindlu zasedolophini, okanye izakhiwo ezincinci zorhwebo. Ixabiso layo eliphantsi xa lithelekiswa ne-24 gauge yenza ukuba ibe yindlela ekhangayo kwiiprojekthi apho ukuqwalaselwa kohlahlo lwabiwo-mali kubaluleke kakhulu ngaphandle kokuphazamisa ukusebenza kophahla ngokubanzi.
28 Gauge (0.0149 intshi / 0.379 mm)
I-28 gauge yentsimbi yokuphahla icwecwe lincinci kwaye likhaphukhaphu kunezinye iigeji ezisetyenziswa ngokuqhelekileyo. Ngokuqhelekileyo ilungele iiprojekthi ezijonga uhlahlo lwabiwo-mali okanye iindawo ezinobutyhileko obuncinci kwimozulu embi. Ngelixa i-28 gauge yophahla lwamaphepha anokusebenza kwizicelo ezithile, anokwenza kakubi phantsi kwemithwalo enzima yekhephu, umoya onamandla, okanye ezinye iimeko zokusingqongileyo. Ngokunjalo, le geyiji ayikhuthazwa kangako kwiiprojekthi zemizi-mveliso okanye zaselunxwemeni, apho kufuneka ukuthembeka okuphezulu kolwakhiwo. Nangona kunjalo, kwiishedi zokuhlala, iigaraji ezincinci, okanye izakhiwo zesikhashana, i-gauge ye-28 inokubonelela ngesisombululo esinoqoqosho kunye nesisebenzayo.
2. Indlela yokukhetha ukutyeba okuLungileyo ngokusekelwe kwiiMfuno zeProjekthi
Ukukhetha ubungakanani obufanelekileyo beshiti lophahla lwentsimbi kufuna ukuba kuqwalaselwe ngononophelo izinto ezininzi, kubandakanya uhlobo lwesakhiwo, iimeko zemozulu kunye nohlahlo lwabiwo-mali. Ukukhetha ubukhulu obungalunganga kunokukhokelela ekungaphumeleli kophahla, iindleko eziphezulu zokulondolozwa, kunye nokunciphisa ubomi. Nantsi inkcazo eneenkcukacha ukukhokela inkqubo yakho yokwenza izigqibo.
Uhlobo lwesakhiwo
Izakhiwo Zemizi-mveliso: Izakhiwo zemizi-mveliso emikhulu, iindawo zokugcina iimpahla, nemizi-mveliso idla ngokufuna iigeyiji ezingama-24 okanye ezityebe ngakumbi ukuze zimelane nokungcangcazela komatshini, ukugcwala rhoqo kophahla, nokuchanabeka kwimichiza okanye izinto ezingcolisayo. Ubunzima obongezelelweyo buqinisekisa ukuba uphahla luhlala lulungile kwisakhiwo kwiminyaka emininzi, ukunciphisa imfuno yokulungiswa rhoqo.
Izakhiwo zokuhlala: Kumakhaya anosapho olunye, izindlu zasedolophini, okanye izakhiwo zokuhlala ezineeyunithi ezininzi, amashiti ophahla angama-26 adla ngokwanela. Banikezela ngokhuseleko oluhle kakhulu ngelixa begcina indawo yexabiso elifikelelekayo kunye nokulula kofakelo.
Izakhiwo zokuRhweba eziKhala: Iiofisi, iindawo ezincinci zentengiso, kunye nezakhiwo zorhwebo ezikumgangatho ophantsi zinokuzuza kumaphepha angama-26 okulinganisa, ukuqina kokulinganisa, iindleko, kunye nesibheno sobuhle.
IiMeko zeMozulu
Imozulu yendawo ichaphazela kakhulu ukhetho lobukhulu beshiti. Amashiti okufulela ngesinyithi kufuneka akwazi ukuxhathisa imiceli mngeni yokusingqongileyo efana nomoya, ikhephu, isichotho, kunye nokuguquguquka kobushushu.
Iindawo ezinomoya ovuthuzayo: Imimandla engaselunxwemeni okanye imimandla ethandwa sisiphango ifuna amaphepha ashinyeneyo, afana negeyiji engama-24, ukuze imelane nemimoya enamandla ngaphandle kokuguquka.
IiNgingqi ezinekhephu: Iindawo ezinekhephu elinzima ziyaxhamla kumashiti ashinyeneyo ukuthintela ukugoba okanye ukuwa phantsi kwemithwalo yekhephu.
Iindawo zobushushu obugqithisileyo: Amashiti atyebileyo abonelela ngokuxhathisa ngcono ekwandeni kwe-thermal kunye nokucutheka, ukunciphisa umngcipheko wokulwa kunye noxinzelelo oludibeneyo.
Ukuqwalaselwa kohlahlo-lwabiwo-mali
Ngelixa amashiti ashinyeneyo enika ukuqina nokusebenza okuphuculweyo, nawo eza ngexabiso eliphezulu lokuqala. Kubalulekile ukulungelelanisa iimfuno zokusebenza kunye nemiqobo yohlahlo lwabiwo-mali.
Iiprojekthi ezinohlahlo lwabiwo-mali oluluqilima zinokukhetha amaphepha okulinganisa angama-28, kodwa kuphela apho iimfuno zokusingqongileyo kunye nezakhiwo zincinci.
Kutyalo-mali lwexesha elide, amashiti ashinyeneyo (24–26 gauge) akholisa ukukhokelela kwiindleko zolondolozo eziphantsi kunye nobomi obude, ekugqibeleni abonelele ngembuyekezo engcono kutyalo-mali.
3. Ifuthe lokutyeba kwiMetal Roofing Sheet
Ubukhulu be-a iphepha lokuphahla lichaphazela imiba emininzi yokusebenza kophahla. Ukuqonda ezi ziphumo kuya kunceda abanini bepropathi benze ukhetho olukhulisa ukuqina kunye nokusebenza kakuhle kwamandla.
Ukuqina
Amashiti entsimbi ashinyeneyo ahlala ehlala ixesha elide kwaye axhathise kwizibonda, imikrwelo, kunye nokudleka. Ngokomzekelo, i-gauge sheet engama-24 iya kugcina ingqibelelo yolwakhiwo kangangamashumi eminyaka naphantsi kwemozulu embi. Amashiti abhityileyo, afana negeyiji engama-28, anokuba sesichengeni sokonakala kunye nokuguga, ngakumbi kwimizi-mveliso okanye kwindawo engaselunxwemeni.
Ukuxhathisa ngomoya
Amashiti okufulela kufuneka amelane namandla okunyusa umoya, ngakumbi kwimimandla ethanda ukuba nezaqhwithi. Amashiti atyebileyo anika ukuchasana okuphezulu kokugoba kunye nokufuduswa, ukunciphisa umngcipheko womonakalo wophahla. Ngokwahlukileyo koko, amashiti abhityileyo angagoba phantsi kwemimoya ebhudla ngamandla, nto leyo enokuthi ibeke esichengeni ukuvalwa kwamanzi kophahla kunye nokhuseleko lwesakhiwo.
Imithwalo yekhephu kunye ne-Ice
Kwiindawo ezinekhephu elinzima, ubunzima bokuthwala ubunzima bophahla bubalulekile. Amashiti atyebileyo anokuxhasa ukuqokelelwa kwekhephu kunye nomkhenkce ngaphandle kokujija okanye ukusilela. Iipropati zokuhlala ezinemithwalo yekhephu ekhaphukhaphu zingasebenzisa ngokukhuselekileyo i-26 gauge sheets, kodwa izakhiwo zoshishino okanye imozulu esemantla inokufuna i-24 gauge yokhuseleko.
I-Thermal Insulation
Ngelixa indima ephambili yophahla lwentsimbi lulwakhiwo, ubukhulu beshiti bunokuchaphazela ukusebenza kwe-thermal. Amashiti atyebileyo anokubonelela ngokugquma ngcono kancinci, ukunciphisa ukuhanjiswa kobushushu kwaye abe negalelo ekusebenzeni kakuhle kwamandla. Oku kunenzuzo ngakumbi kwiimeko zemozulu ezigqithisileyo apho iindleko zeHVAC zinokubaluleka.
4. UVavanya njani uMgangatho weMetal Roofing Sheets
Ukukhetha ubukhulu obufanelekileyo kubalulekile, kodwa ukuvavanywa komgangatho kubaluleke ngokufanayo. Nkqu neshiti elishinyeneyo linokusilela kwangethuba ukuba i-material okanye i-coating ayikho mgangathweni.
Isiqinisekiso seMathiriyeli
Qinisekisa ukuba amaphepha okuphahla athobela imigangatho yamazwe ngamazwe efana ne-ASTM, ISO, okanye izatifikethi ze-EN. Ezi ziqinisekiso zibonisa umgangatho wentsimbi, amandla, kunye nokungaguquguquki kokusebenza, ukunika isiqinisekiso sokuqina kwexesha elide.
Uhlobo lokwaleka
Amaphepha ophahla esinyithi ahlala egqunywe ngokhuseleko olufana ne-zinc, i-aluminium-zinc alloys, i-polyester, okanye i-PVDF. Ezi zambatho zithintela ukubola, ziphucula ukuxhathisa kwe-UV, kwaye zinegalelo kwisibheno sobuhle. Iingubo ezikumgangatho ophezulu zinokwandisa ubomi bophahla, ngakumbi kwiindawo eziselunxwemeni, kwimizi-mveliso, okanye kwimimandla enemvula ephezulu.
5. Iingcamango ezingezizo eziQhelekileyo malunga nokutyeba kwePhepha lokufulela ngesinyithi
Ukukhetha ishidi lokuphahla lesinyithi elichanekileyo lihlala libandakanya iingcamango eziphosakeleyo ezinokukhokelela kwiindleko eziphezulu okanye ukunciphisa ukusebenza.
Umbono ongeyiyo 1: Amashiti atyebileyo ahlala engcono - Ngelixa ii-gauge sheets ezingama-24 zinika amandla aphezulu kunye nokuchasana ngcono nomoya kunye nekhephu, amashiti ashinyeneyo akasoloko eyimfuneko. Izakhiwo zokuhlala kwimozulu ephakathi zihlala zisebenza kakuhle kunye namashiti angama-26 okulinganisa ngexabiso eliphantsi.
Umbono ongeyiyo wesi-2: Onke aMashiti esinyithi ayafana -Ibakala leMpali, uhlobo lokwaleka, kunye nomgangatho womenzi unempembelelo enkulu ukuqina, ukumelana nokubola, kunye nokusebenza kwe-thermal. Amaphepha egeyiji efanayo evela kubavelisi abahlukeneyo anokwahluka kakhulu.
Umbono ongeyiyo wesi-3: Amashiti atyebileyo asebenza ngaMandla ngakumbi- Ukusebenza kakuhle kwamandla kuxhomekeke ngakumbi kwizinto ezigqunyiweyo, ukugqibezela okubonakalayo, kunye nokugquma kunokuba kubunzima bodwa. Iphepha legeyiji engama-26 elinokwaleka okukhanyayo linokugqwesa ngaphezu kweshiti elingagqunywanga.
Ingcamango engeyiyo yesi-4: Amashidi amancinci akakwazi ukujamelana neMozulu ePhakamileyo - Ufakelo olufanelekileyo, inkxaso eyaneleyo, kunye nezibophelelo eziqinisiweyo zivumela amaphepha amancinci ukuba enze ngokuthembekileyo kwiimeko ezingaphantsi.
6. Isiphelo: Ukwenza Ukhetho Olululo Kumashiti Akho Ophahla
Ukukhetha ubukhulu obufanelekileyo bamashiti akho ophahla lwentsimbi kubalulekile ukulungelelanisa ukusebenza kolwakhiwo, ukomelela kokusingqongileyo, kunye nokusebenza kakuhle kweendleko. Ukuqonda umahluko phakathi kwe-24, 26, kunye ne-28 gauge sheets, kunye nokuvavanya iimfuno ezithile zeprojekthi yakho-kubandakanya uhlobo lwesakhiwo, iimeko zemozulu kunye nohlahlo lwabiwo-mali-uqinisekisa uphahla olunikezela ukuqina kwexesha elide, ukhuseleko kunye nokusebenza kakuhle kwamandla. Kubalulekile ngokulinganayo ukuvavanya umgangatho wezinto eziphathekayo, uhlobo lokwaleka, kunye nodumo lomenzi, kunokuba ucinge ukuba amashiti atyebileyo ahlala engcono. Iphepha elikhethiweyo lesinyithi elikhethiweyo linokubonelela amashumi eminyaka yokukhusela ngokugcinwa okuncinci, ukuphucula ukusebenza kunye noxolo lwengqondo. Ukufumana isikhokelo sobungcali kunye nezisombululo zophahla ezikumgangatho ophezulu ezilungiselelwe iprojekthi yakho, cinga ngokudibana neengcali zaseShandong Sino Steel Co., Ltd., ezinokukunceda ukhethe ubukhulu bephepha obufanelekileyo kunye nemathiriyeli ukuhlangabezana neenjongo zakho zokwakha.
