Iimpawu eziphambili kunye nokusetyenziswa:
Amandla aphezulu: Imivalo yensimbi inamandla aphezulu kwaye inokudlala indima ekomelezeni nasekuqiniseni ikhonkrithi, ukwandisa umthamo wokuthwala isakhiwo sonke.
Ukudibanisa okulungileyo: Umphezulu wentsimbi yentsimbi ngokuqhelekileyo unokwakheka kwentambo okanye i-ribbed design, enceda ukudibanisa ngcono kunye nekhonkrithi kunye nokuphucula ukuqina kwesakhiwo.
Ukuqina: Ibha yensimbi inokuqina okulungileyo kwaye inokumelana nemithwalo yexesha elide kunye nemiphumo yokusingqongileyo, okwenza isakhiwo sokwakha sizinzile.
Iplastiki: Intsimbi yentsimbi ineplastiki ngaphakathi koluhlu oluthile kwaye inokugoba kwaye iqhutywe ukuze ihlangabezane neemfuno zoyilo lwezakhiwo ezahlukeneyo.Iimpawu ezahlukeneyo: Imivalo yensimbi ineenkcazo ezahlukeneyo kunye nobubanzi bokukhetha, ngokweemfuno zeeprojekthi ezahlukeneyo zokukhetha, ukubonelela ukuguquguquka kunye nokuhlukahluka.