Kalkulesen bilong rafta sistem bilong hip rup
Plis soim ol mak yu laikim long milimita
Y - antap bilong rup
X - longpela bilong haus
Z - bikpela bilong haus
C - minimam sais bilong 'eaves' we i hangamap antap
U - Brait bilong 'rafter'
W - Tiknes bilong 'rafter'
S - Rafter pitch
O1 - Bikpela bilong ol bod bilong karamapim
O2 - Tiknes bilong 'sheathing board'
R - Lathing step
Ol samting bilong program.
Kalkulesen bilong 'truss structure'.
Painimaut hamas samting bilong wokim ol 'rafters' i mas i stap.
Painimaut volium bilong ol 'sheathing board'.
Stretpela mak bilong olgeta hap bilong 'rafter system'.
Ol piksa bilong wanpela hip rup, ol 'rafters', na ol 'sheathing'.