Kalkulasen ewe kokkotun rafter lon eu roof mi hip .
Kopwe pwarata ekkewe ukukun mi namwot . non milimita
Y - tekian ewe roof
X - ttamen imw
Z - watten imw
C - ukukun ewe eaves mi nom won
U - Rafter watte
W - Rafter mi chou
S - Pitch
O1 - Wisen ekkewe board mi ffér seni chéén irá .
O2 - Ewe board mi ffér seni chéén irá
R - Ewe step
Ekkewe tufichin prokram.
Kalkulasen ewe truss.
Ach sipwe finata ukukun ekkewe pisekin kau imw mi namwot fan iten ekkewe rafter.
A affata ewe ükükün ekkewe föün äsefich.
Pwungun pwe meinisin kinikinin ewe kokkotun rafter.
Ekkewe sasing mi titchik ussun eu roof mi hip, ekkewe ttit, me ekkewe ttit.