Intangiriro kumiterere rusange yuburyo bwurugendo
Ibicuruzwa byabagenzi byateguwe na Lianggong, ibice byingenzi ni:
1. Sisitemu nyamukuru ya Truss
Sisitemu nyamukuru ya truss ikubiyemo:
Hejuru ya chord, hepfo ya chord, inkoni yimbere yimbere inyuma ya oblique inkoni, inkoni ihagaritse, umuryango wumuryango nibindi.
2. Gutwara sisitemu yo hasi yo gushyigikira
Sisitemu yo hepfo yerekana sisitemu igizwe ahanini na sisitemu yo hasi, urumuri rwimbere, urumuri rwinyuma, ibyuma bya oist nibindi.
3. Sisitemu yo gukora no gushyigikira
Sisitemu yo gukora no gushyigikira sisitemu nibintu byingenzi bigize Ingenzi
4. Sisitemu ya Waling na ankor
Sisitemu yo kugenda no gufata ibyuma bigizwe ahanini
Inyuma yinyuma, Uruziga ruhagaze neza, inzira yo kugenda, umusego wibyuma, umugereka wo kugenda nibindi.
5. Sisitemu yo guterura
Urugero rwumushinga wa sisitemu yo guterura
Ihuza ryimanitse yo hejuru no hepfo.