rafter
US /ˈræf.tɚ/
UK /ˈræf.tɚ/

1.
kasau, balok atap
one of several internal beams extending from the eaves to the ridge of a roof, constituting its main support
:
•
The carpenter carefully placed each rafter into position.
Tukang kayu dengan hati-hati menempatkan setiap kasau pada posisinya.
•
Birds often build nests under the eaves, near the rafters.
Burung sering membangun sarang di bawah atap, dekat kasau.