Ibikoresho bikometse byagenewe ibiti bya sima bifite umwuka bigira uruhare runini mu kubaka inkuta zikozwe mu bikoresho nk'amatafari y'umusenyi wa lime cyangwa ibyuma bikonjesha.

Sima y'amatafari ihendutse yitandukanya n'indi sima igabanyije ugereranije n'indi isanzwe ya sima y'amatafari.

Izwi cyane nka Sima y'amatafari ifite imikorere myiza (C2) hakurikijwe amabwiriza ya EN12004...

Sima isanzwe y'amatafari, yagenwe nka C1 hakurikijwe ibisobanuro bya EN12004, ihagarariye kole y'amatafari ikora sima ifite ibipimo by'imikorere byagenwe.

Kole yo mu bwoko bwa tile ikoreshwa, yakozwe kugira ngo yorohereze aho iherereye, ikoresha uburyo bwo gukwirakwiza polymer nk'ikintu gifatanya.

Uduce tw’amatafari, igice cy’ingenzi mu ntambwe za nyuma z’imishinga yo gushyiramo amatafari ku rukuta cyangwa hasi, dufasha mu kuzuza icyuho kiri hagati y’amatafari.