Kampani ya ku Japan ya Sumitomo Forestry ikukonzekera kumanga nyumba yosanja yamatabwa yayitali kwambiri padziko lonse lapansi kuti ikumbukire kuti idakwanitsa zaka 350 m'chaka cha 2041. Nyumbayi yansanjika 70 idzamangidwa ndi 90 peresenti ya matabwa.
Malinga ndi kampaniyo, nsanja yayitali yamamita 350, yotchedwa W350, ikhala ndi matabwa a 185,000 cubic metres. Akuyembekezeka kuwononga ndalama pafupifupi ma yen 600 biliyoni aku Japan ($5.6 biliyoni).
W350 ikhala ndi maofesi, mashopu ndi mahotela, komanso nyumba pafupifupi 8,000. Padzakhalanso makonde ndi zobiriwira pamlingo uliwonse.
"Mapangidwe amkati amapangidwa ndi matabwa oyera, kutulutsa malo odekha omwe amatulutsa kutentha ndi kufatsa," adatero Sumitomo m'mawu ake.
Makhonde afika mozungulira mbali zonse zinayi za nyumbayo, ndikupatsa malo “momwe anthu amasangalala ndi mpweya wabwino wakunja, zinthu zachilengedwe zolemera komanso kuwala kwadzuwa kumadutsa masamba.”
Sumitomo adalongosola cholinga cha W350 ndi "kupanga mizinda yosakonda zachilengedwe komanso yogwiritsa ntchito matabwa yomwe imakhala nkhalango chifukwa chogwiritsa ntchito kwambiri zomangamanga."
"Braced tube structure" "idzalepheretsa kusinthika kwa nyumbayo chifukwa cha mphamvu zakutsogolo monga zivomezi ndi mphepo."
Kampaniyo ikukhulupirira kuti mtengowo utsika chifukwa matabwa ayamba kugwiritsidwa ntchito kwambiri: "Kupita patsogolo, kuthekera kwachuma kwa polojekitiyi kudzakulitsidwa pochepetsa ndalama chifukwa cha chitukuko chaukadaulo."
Nkhalango zimatenga gawo limodzi mwa magawo atatu a madera a dziko la Japan, ngakhale kuti mitengo yopangira matabwa opangidwa m'nyumba imakhala pafupifupi 30 peresenti yokha.
“Kuwonongeka kwa nkhalango za m’nyumba chifukwa chosasamalidwa mokwanira kwafika povuta. Kuchuluka kwa matabwa kudzalimbikitsa kubzalanso ndikuthandizira kukonzanso nkhalango,” inatero kampaniyo m’chikalatacho.
