Guharura uburyo bw'imirongo y'igisenge c'amafyigo
Urasabwe kwerekana ingero zikenewe muri milimetero
Y - uburebure bw'igisenge
X - uburebure bw'inzu
Z - ubwaguke bw'inzu
C - ubunini buke bw'amabarabara
U - Ubwaguke bw'umugozi
W - Uburebure bw'imirongo
S - Ikibuga c'imirongo
O1 - Ubwaguke bw'imbaho zo gupfuka
O2 - Uburebure bw'urubaho rwo gupfuka
R - Intambwe yo gutera
Ubushobozi bwa porogarama.
Ibara ry’imiterere y’ivyuma.
Kumenya igitigiri c’ibikoresho vy’inyubako bisabwa kugira ngo umuntu yubake amabati.
Kumenya ubunini bw’ibiti vy’ugupfuka.
Ingano nyazo z’ibice vyose vy’urutonde rw’ibiti.
Ibishushanyo vy’ido n’ido vy’igisenge c’itako, ibiti, igipfukisho.