Xayma sistemu rafter bu kaw ankle
Baalnu nga wax dimension yiñ soxla ci milimeetar
Y - njoolaayu kaw gi
X - Guddaayi kër gi
Z - yaatuwaayu kër gi
C - Dayo bi gëna ndaw
U - Yaatu rafter
W - yaatuwaayu rafter
S - Terrain rafter
O1 - Largeur des planches d'enveloppement
O2 - Gëna dëgëru tablo
R - Etape de torne
Mënu prograam.
Xayma jumtukaayu truss bi.
Saytu limu jumtukaayi tabax yiñ soxla ngir rafter yi.
Saytu yaatuwaayu tablo yi
Dimension yi gëna jub ci wàll yépp ci sistemu rafter bi.
Nataal yu leer ci kaw ankle, rafters, gaature.