Njira zamakina zamasinthira zaka zambiri kuchokera ku mphuno ndi chubu kuti zikhale zowonjezera (Greenfield) kupita ku chipangizo chosakanikirana (NM), chitoliro (EMT), ndi chingwe cha pansi pa nthaka (UF). Kuchokera cha m'ma 1890 mpaka lero, njira zogwiritsira ntchito zowonjezera zakhala zotetezeka kwambiri chifukwa cha mtundu wa wiring ndi kuwonjezera kwa waya. Pakati pa 1890 ndi 1910, mphuno ndi waya wa chubu anali ukali m'nyumba yomanga.
Ma waya omwe anali osungunuka payekha ankagwiritsidwa ntchito ndi mabakiteriya otsekemera.
Ankadutsanso nkhuni m'mapope omwe ankawombera nsalu yotchinga. Chizolowezichi chinali ndi waya wotentha komanso waya wosalowerera omwe ankatetezedwa padera pofuna chitetezo. Pochita izi, kusungunula kunachotsedwa, waya anali atakulungidwa pamtanda wosakanikirana, ndipo maguluwo ankagulitsidwa palimodzi asanatumizidwe kuti aphimbeko. Kugwa kunali waya akudziwika ku chirichonse ndipo panalibe waya wothandizira.
M'zaka za m'ma 1920 mpaka m'ma 1940, magetsi anayamba kugwiritsa ntchito njira yowonjezera yowonjezera. Flex, yemwenso amadziwika kuti Greenfield, inalandiridwa kuwonjezera pa makina a nyumba chifukwa makoma a zitsulo omwe ankasinthasintha ankathandiza kuteteza mawayawo. Ngakhale apo, njira yowakomerayi inali ndi mavuto ake. Ngakhale mtengowo umatetezedwa ndipo chivundikiro chakunja chokhala ndi zitsulo chimakhala pansi, panalibenso waya wosiyana.
Ngati chophimba chosasinthika sichinayanjane ndi chidutswa chotsatira kapena chidadulidwa, kugwedeza kwa nthaka kunasweka.
M'ma 1930, njira yowakhazikitsa mwamsanga inakhazikitsidwa. Chingwe chopanda malire chinabadwa ndipo chimaphatikizapo nsalu yophimba nsalu, ngati mphuno ndi waya wophimba, koma waya wonyezimira komanso wosalowerera unali umodzi pamodzi.
Zinalinso ndi zovuta zake chifukwa cha kusowa kwa waya.
Mwachimwemwe m'ma 1940, pamapeto pake panafika zaka zachitsulo. Pulogalamuyi inalola olemba kukoka mawaya ambiri mu malo omwewo. Mtsinje wokhawo umatengedwa kuti ndi njira yokhayokha, komanso umatulutsa mwayi wokhala ndi waya wozembera. Mankhwala akhala akugwiritsidwa ntchito kuyambira masiku amenewo ndipo amabwera mumitundu yosiyanasiyana ndi kukula kwake kuti agwiritsidwe ntchito mkati ndi kunja kwa nyumba yanu.
Kuwonjezera kwatsopano kuwonjezera pa wiring kunayambika m'ma 1960 kuzungulira 1965. Iyo inali ndondomeko ya NM chingwe chomwe chinagwiritsa ntchito waya wachitatu, waya wosasuntha womwe ukuyenda ndi waya wotentha komanso wosalowerera. Zingwe zitatuzi zonse zimabisika m'kati mwakunja zopangidwa ndi zipangizo za pulasitiki. Kusintha kumeneku kunapanga chingwe chopanda mtengo komanso chosavuta kuchiyika. Zimasintha komanso zimagwiritsidwa ntchito lero.
Pamodzi ndi chingwe cha NM chogwiritsa ntchito mkati, chingwe chofanana chomwecho chinayambanso. Maselo odyetsera pansi (UF) ankagwiritsidwa ntchito kuti aikidwe mwachindunji pansi pa nthaka popanda kuikidwa mumtsinje. Mtundu woterewu uli ndi waya wotentha, wosalowerera ndale, ndi waya womwe umalowa mu phula la pulasitiki lolimba lomwe limawatchinjiriza kumalo amchere, madzi, ndi zipangizo pansi.
Izi zinali zopanda mtengo kuwonjezera pa mphamvu zamagetsi pansi pa zinthu monga magetsi a pabwalo ndi chakudya cholimbikitsa.
Monga mukuonera, zinthu zasintha kwambiri pazaka kuti zikhale bwino! Mukuona, waya wophimba mphira umangokhala kwa zaka 25 kapena kuposa, mphirayo isanayambe ndikuyamba kugwedezeka. Izi zinasiyitsa mawaya osayenerera omwe angayambitse mavuto ambiri. Vinyl ya pulasitiki yasonyezedwa kuti iwononge nthawi ya moyo wa nyumba yanu ndipo ndiyo njira yabwino kwambiri yopezeramo. Kwa njira yokondweretsedwa m'buku langa, ndimasankha kondomu . Pogwiritsa ntchito izi, mukhoza kukoka mawaya mosavuta, kuwonjezera mawaya kumtsinje (momwe amavomerezera), ndi kukhala ndi mawonekedwe omwe amateteza mawaya kuti asawonongeke. Ndiyo njira yodzisankhira imodzi. Funso lokhalo ndilo, kodi tidzawona chinthu china chotsatira muwongolera zamagetsi m'moyo wathu?