Precast zinthu konkireamapangidwa ndi kupangidwa mu precaster fakitale.Pambuyo pobowola, imasamutsidwa ndikuyiyika pamalo ake ndikuyimitsidwa pamalopo.Amapereka njira zokhazikika, zosinthika zapansi, makoma ngakhalenso madenga mumtundu uliwonse wa zomanga zapakhomo kuchokera ku nyumba zazing'ono kupita kuzipinda zamitundu yambiri.Mphamvu zoyamba za konkriti zimatha kuthetsedwa ndi kutalika kwa moyo wake (mpaka zaka 100) komanso kuthekera kwakukulu kogwiritsanso ntchito ndikusamutsa.Njira zopangira zodziwika bwino zimaphatikizapo kupendekeka (kutsanuliridwa pamalopo) ndi precast (kutsanulidwa pamalopo ndikupita kumalo).Njira iliyonse ili ndi ubwino ndi zovuta zake ndipo kusankha kumatsimikiziridwa ndi malo ofikira, kupezeka kwa malo owonetserako malo, zomaliza zofunikira ndi zofuna za mapangidwe.
Ubwino wa konkriti wa precast ndi:
- liwiro la zomangamanga
- zodalirika - zopangidwa m'mafakitale omangidwa ndi cholinga osati nyengo zomwe zakhudzidwa
- magwiridwe antchito apamwamba pakutonthoza kwamafuta, kukhazikika, kulekanitsa kwamayimbidwe, komanso kukana moto ndi kusefukira
- mphamvu zachilengedwe komanso mphamvu zamapangidwe zomwe zimatha kukwaniritsa miyezo yopangira uinjiniya wanyumba kuyambira nyumba zazing'ono mpaka zipinda zambiri
- zosinthika kwambiri mu mawonekedwe, mawonekedwe ndi zomaliza zomwe zilipo, zopindulitsa kuchokera kumitundu yosiyanasiyana ya nkhungu ndi tebulokutseka maginito.
- kuthekera kophatikizira ntchito monga magetsi ndi mapaipi muzinthu zoyambira
- mkulu structural dzuwa, otsika ziwopsezo mitengo pa malo
- zinyalala zochepa, popeza zinyalala zambiri m’fakitale zimakonzedwanso
- malo otetezeka kuzinthu zochepa
- kuthekera kophatikiza zinthu zotayika monga phulusa la ntchentche
- kuchuluka kwamafuta ochulukirapo, kupereka phindu lopulumutsa mphamvu
- zangopangidwira kuti zimangidwenso, zigwiritsidwenso ntchito kapena kuzibwezeretsanso.
Konkriti ya precast ili ndi zovuta zake:
- Kusiyanasiyana kwamagulu aliwonse (makamaka zotsegula, zoikamo zomangira ndi zonyamulira) zimafuna mapangidwe ovuta, apadera aumisiri.
- Nthawi zambiri imakhala yokwera mtengo kuposa njira zina (imatha kuchepetsedwa ndi nthawi yomanga yocheperako, kulowa koyambirira potsatira malonda, komanso kumaliza kosavuta ndi kukhazikitsa ntchito).
- Ntchito zomanga (mphamvu, madzi ndi gasi; ngalande ndi mapaipi) ziyenera kuponyedwa molondola ndipo zimakhala zovuta kuwonjezera kapena kusintha pambuyo pake.Izi zimafuna kukonzekera mwatsatanetsatane ndi kamangidwe kamangidwe kamene kamangidwe kamene kamakhala kosagwiritsidwa ntchito popanga mapaipi ndi magetsi.
- Kumanga kumafuna zida zapadera ndi malonda.
- Malo okwera kwambiri komanso malo oyendetsera zoyandama zazikulu ndi ma cranes opanda zingwe zam'mwamba ndi mitengo ndizofunikira.
- Kulumikizana kwa ma panel ndi masanjidwe a lateral bracing kumafuna mapangidwe atsatanetsatane.
- Kumanga kwakanthawi kumafuna zoyika zapansi ndi khoma zomwe ziyenera kukonzedwanso pambuyo pake.
- Mapangidwe olondola atsatanetsatane ndi kuyika koyambirira kwa ntchito zomanga, kulumikizana padenga ndi zomangira ndizofunikira.
- Ntchito zotumizira anthu ndizosafikirika komanso zovuta kukweza.
- Lili ndi mphamvu zambiri.
Nthawi yotumiza: Apr-08-2021