1.Ikholomu Yensimbi, I-Beam: Ngiqhakaza ngokufaka i-galvanization yediphu eshisayo
2. Impahla yezinkukhu: isisele esikhulu sokuphakelayo, ikheji nohlaka, ulayini wokuphakela, uhlelo lokuphuza, uhlelo lokuhlanza umquba oluzenzakalelayo, ukuqoqwa kwamaqanda, ukungena komoya, ukulawula imvelo nokukhanyisa
