Ikiraro cyikiraro hamwe na baseplate nibice byibanze nibintu byingenzi bigize ikiraro cya Bailey. Kuberako ikiraro cya Bailey kigabanijwemo ikiraro 321 nicyuma cya HD200, ibyuma byikiraro hamwe na baseplate nabyo birashobora kugabanywa mubwoko 321 nubwoko 200.
Andika 321 abutment: Inkingi yanyuma yikiraro ishyigikiwe kumurongo wa axe ya abutment. Igiti cya axe kigabanyijemo ibice bitatu. Iyo ikiraro cyumurongo umwe cyubatswe, inkingi yanyuma ya truss ishyigikiwe mugice cyo hagati cyumurongo; iyo ikiraro cyimirongo ibiri cyubatswe, hakoreshwa ibiraro bibiri Intebe ninkingi zanyuma zishyigikiwe kumurongo wo hagati wibice bibiri bya axe ya abutment. Iyo hubatswe imirongo itatu yikiraro, haracyakoreshwa ibice bibiri. Gushyigikirwa kumpande zombi zumurongo wa axe yikindi kiraro gifite.
Andika 321 baseplate: Baseplate ikoreshwa mugushira ikiraro no kugabana imizigo iva kumurongo wikiraro kuri fondasiyo. Kubara 1, 2, na 3 byanditseho ku nkombe ya baseplate, byerekana umwanya uhagaze hagati yumurongo wo hagati wikiraro kumurongo umwe, umurongo ibiri, nikiraro cyimirongo itatu. Kurundi ruhande rwicyapa cyanditseho umwanya wumurongo wo hagati werekeza ikiraro.
Ubwoko bwa 200 bwikiraro butwara, baseplate nimwe nubwoko 321, ariko imiterere numubiri umwe, kandi buri kiraro gitwara gihuye nigitereko.