M'zaka zaposachedwa, ndikukula kwachidziwitso chachilengedwe padziko lonse lapansi komanso kufunikira kwa zida zokhazikika pantchito yomanga, OSB (Oriented Strand Board), nyumba yatsopano yomanga yogwirizana ndi chilengedwe, yakhala chisankho chodziwika bwino pamsika wapadziko lonse lapansi. Mapangidwe ake apadera komanso magwiridwe antchito abwino kwambiri akuwonetsa kuthekera kwake kwakukulu pakupanga mipando, zomanga, zokongoletsa mkati, ndi magawo ena.
OSB idachokera ku North America m'ma 1970. Wopangidwa kuchokera ku-timatabwa tating'onoting'ono, zopatulira, kapena zotsalira za matabwa, OSB imapangidwa kudzera munjira yolowera ndi kukanikiza kwambiri-kutentha kwambiri. Poyerekeza ndi plywood yachikale kapena MDF, OSB imapereka chikhazikitso chokulirapo, mphamvu yopindika yopindika bwino ndi katundu-kunyamula, mayamwidwe amadzi ochepa, komanso kukana chinyezi. Makhalidwewa amapangitsa kuti ikhale yoyenera kwambiri pomanga zomangira m'malo achinyezi, monga pansi, mapanelo a khoma, ndi denga.
Ntchito zachilengedwe za OSB ndizodziwika kwambiri. Zomatira zomwe zimagwiritsidwa ntchito popanga ndi formaldehyde{{1}zaulere kapena zotsika-zomata za formaldehyde, zomwe zimachepetsa kwambiri mpweya wa formaldehyde ndikukwaniritsa miyezo yapadziko lonse ya chilengedwe, monga European E1 komanso mulingo wokhwimitsa kwambiri wa CARB P2. Khalidweli limapangitsa kuti likhale lokonda kwambiri nyumba zobiriwira komanso nyumba zathanzi. Kuphatikiza apo, kupanga OSB kumagwiritsa ntchito matabwa mokwanira, kumachepetsa kuthamanga kwa nkhalango, komanso kumagwirizana ndi chitukuko chokhazikika padziko lonse lapansi.
Kuchokera pamalingaliro amsika, kufunikira kwa OSB kukukulirakulira. M'misika yaku Europe ndi America, imagwiritsidwa ntchito kwambiri pothandizira zomangamanga m'nyumba zogona komanso zamalonda ndipo imafunidwanso kwambiri pakukongoletsa nyumba chifukwa cha mawonekedwe ake achilengedwe, owoneka bwino. Mumsika waku Asia, ndi kuchuluka kwa zida zokomera chilengedwe pantchito yomanga, kugwiritsa ntchito OSB kukukulirakuliranso pang'onopang'ono, makamaka m'nyumba zomangidwa kale ndi mipando yanthawi zonse.
M'tsogolomu, ndi kupita patsogolo kwaukadaulo komanso njira zopangira zokometsera, magwiridwe antchito a OSB apitilizidwa bwino, ndipo mawonekedwe ake adzasiyanasiyana. Kwa ochita zamalonda akunja, OSB si gulu lazinthu zomwe zili ndi kuthekera kwakukulu, komanso mlatho wofunikira wolumikiza zochitika zachilengedwe ndi kufunikira kwa msika.
