Rafter jatebɔ.

Jatebɔ kɛli jirisunw hakɛw ni u kɛrɛw kan

A’ ye hakɛ wajibiyalenw fɔ milimɛtɛrɛ kɔnɔ

X - so bonya
Y - so sanfɛla janya
C - overhang hakɛ
Z - yɔrɔjan ka bɔ pankurun da la ka taa a bila sɔgɔlan daminɛ na
B - Rafter ka bonya

tàyɔrɔ

So sanfɛla jɔli tɛ se ka kɛ ni jirisunw tɛ.
Ni gable roof structure ye, a wajibiyalen don ka rafters hakɛw jate, tigɛ ani groove kɛrɛw.
Rafter jatebɔ porogaramu dabɔra o de kama.
Ka kɛɲɛ ni so bonya ye, a janya k’a ta a daminɛ na ka taa a bila a sanfɛla la ani a sanfɛla bonya, a janya, a ni jirisunba cɛ janya bɛ jate.
Porogaramu bɛna jiribolo ja dɔ fana ja ni a bonya ye. O nafa bɛna bonya kɛrɛnkɛrɛnnenya la mɔgɔ minnu b’a latigɛ ka jirisunw dilan ni u yɛrɛ bolo ye.