Igishushanyo mbonera cyo Gutanga Kubaka-Ikariso Yicyuma Ikiraro hamwe na Bowstring Arch Girder

Ikiraro kiboheye (nanone cyitwa umuheto-arch cyangwa umuheto-girder ikiraro) ni ubwoko bwikiraro gifite imbavu zometse kumpande zumuhanda (etage), hamwe nigitereko kimwe cya karuvati kuri buri rubaraza, rushyigikira igorofa.Isano ihanamye ihujwe na arche ishigikira igorofa kuva hejuru.Irashobora gufatwa nkikiraro hagati yikiraro cyikiraro nikiraro gihagarikwa.Bakora nkibiraro byubatswe kuruhande rumwe, kuberako imbaraga zumutwaro kumurongo (thrust) bisobanurwa nkimpagarara kumurongo uhetamye ugororotse uhuza umurongo uhagaritse igorofa igerageza gutobora inkuta no gusunika inama zayo hanze muri abutment .Inama zububiko bwiki kiraro zahujwe hamwe na chord yo hepfo.Ibi bituma ikiraro cyubakwa hamwe nishingiro ridakomeye kuko imbaraga kuri abut ni nke.Ibiraro bifatanye-byubatswe birashobora kubakwa hejuru yimisozi miremire cyangwa mubice byubutaka budahungabana.Ikindi kintu cyiza kiranga ubu bwoko bwikiraro ni uko bidashingiye ku mbaraga zogusenyera zitambitse kubwubusugire bwazo bubemerera kubakwa hanze hanyuma bikajyanwa ahantu.

Ihambiriye-arch itanga igisubizo mugihe ishobora gutegurwa ko igorofa iri kurwego kuburyo ishobora gutwara imbaraga zitambitse nkumunyamuryango wa karuvati.Ihambiriye-inkingi rimwe na rimwe ivugwa nk'umuheto.

Ibyiza:

A. Imiterere ishyize mu gaciro, gukomera gukomeye, imbaraga zisobanutse, ihumure ryinshi ryo gutwara, guhuza cyane nubutaka n’imiterere ya geologiya

B. Ibipimo bya tekiniki nubukungu byateye imbere ugereranije, bishobora kugabanya uburebure bwikiraro cyegereye kandi bikagabanya igiciro rusange cyikiraro

C. Ikiraro ni cyiza, kigaragaza ubumwe bwimbaraga nubwiza, nubwumvikane hagati yimiterere nibidukikije, byongera ingaruka zubutaka

D. Imirimo yo kugenzura, kuyitunganya no kuyisana ni nini, kandi birakenewe kumenya impungenge ziterwa na boom, kugenzura aho inanga ihagaze, guhora usimbuza kashe ya kashe, no gukuraho no gusimbuza ibimera, nibindi.