Ukufaka isibhamu sesithili ekubeni kwezindlu kukuthetha ukuthi kuyisahluko esibalulekile kwezinhloso zokuphatha izinto, okukhuthaza ubunzima bezinhloso, kuvumela amaphuzu amaningi ayo okukhanyisa emkhakheni, nokuthuthukisa izinhloso zokubhala izindlu, okuyisahluko esithi sizikhululeka kakhulu ngamandla ethu okukhanya nokubhala. Sihlanganisa nokuthengisa amasibhamu esithili amahle—kubanzi kwezi sibhamu (I-beams), izibhamu zesi-H, nezibhamu eziphathelene nesilinganiso—ezihlanganisiwe kakhulu emsebenzini wethu ngamashini ayo ayesibhalo (CNC) ukuze zifanele nemiphumela yezindawo zokuthintela nezinhloso zokubhala izindlu zezindlu. Ukusebenzisa isibhamu sesithili ekubeni kwezindlu kuvumela ukuthi kungafani kanye nesikhundla sokuthintela isibhamu esinye, okuvumela ukuthi kubhekwe ngamaphezu amaningi okukhanyisa emkhakheni, amafenesitri amaningi, nokuthenga amakhaya amaningi okukhanyisa emkhakheni, okungasekho ngezinhloso zezindawo zezindawo zokubhala. Abalimi bethu bahlalela ngokujabula imiphumela yezindawo nezinkhokhelo ukuze bavumele ukuthi isibhamu esibonakalayo sifanele nezinye izinhloso zokuphatha izinto, naqaphela ukuthi kubonakala ngezinhloso zokuphatha izinto zonke noma kuzoba kwizinhloso zokuphatha izinto zokubhala izindlu, okuvumela ubunzima obuhle phakathi kokuthintela, ukuthwasa, nokuthwasa kwemithwasa. Ngokuzimela ngokubhala ngokujabula nokuphatha izinto ngokujabula, sizivumela ukuthi isibhamu esibonakalayo sokubhala izindlu sivumela ubunzima nobunzima obuhle kakhulu, kodwa kuvumela ukuthi kubhekwe ngokushesha kwezindawo zokubhala nokuphula ukuthintela kwezindawo zokubhala, okuvumela ukuthi kubhekwe ngokujabula kwezindawo zokubhala izindlu zezindawo zokubhala izindlu zezindawo zokubhala.