Nubwo byombi bifite ishusho ya "C", imiterere yabyo y’ibice bitandukanye n’imbaraga z’imiterere biratandukanye cyane, ibyo bikaba bigira ingaruka ku buryo butaziguye ku bushobozi bwabyo bwo gutwara imizigo n’uburyo bikoreshwa.
Igice cy'uruziga cya C Channel niimiterere y'inyongera ishyushye cyane. Urusobe rwayo (igice gihagaze cya "C") ni runini (ubusanzwe 6mm - 16mm), kandi imigozi (impande ebyiri zitambitse) ni nini kandi ifite umusemburo runaka (kugira ngo byorohereze gutunganya ibintu bishyushye). Iyi miterere ituma igice cyayo kigira ubushobozi bwo gukomera no gukomera. Urugero, umuyoboro wa 10# C (ufite uburebure bwa 100mm) ufite ubugari bwa 5.3mm n'ubugari bwa 48mm, ushobora kwihanganira uburemere bw'inzu cyangwa inkuta mu nyubako nyamukuru.
Ku rundi ruhande, C Purlin ikorwa no kugondagura ibyuma bikonje. Igice cyayo cyo kwambuka ni "gito" cyane: ubugari bw'urukuta ni 1.5mm - 4mm gusa, kandi uduce duto tw'urukuta ni duto kandi akenshi tugira uduce duto (twitwa "uduce twongera imbaraga") ku mpande. Izi mpande zongerereza zigenewe kunoza uburyo uduce duto tw'urukuta duto duto duhagarara no gukumira guhindagurika kw'imitwaro mito. Ariko, bitewe n'ibikoresho bito, ubushobozi bwo guhangana n'urukuta muri rusange rwa C Purlin ni buke. Urugero, C160×60×20×2.5 C Purlin (uburebure × ubugari bwa flange × uburebure bwa webhu × ubunini) ifite uburemere bwa 5.5kg kuri metero imwe, burenze cyane umuyoboro wa 10# C (hafi 12.7kg kuri metero imwe).