A roof-ridge rafter of a traditional house, baluy; a hut, ābung; or a pile hut, inappal.
A traditional house has four ridge rafters. They rest in a V where the outside ceiling joists, hagpaw di lī'ub, and ceiling beams, lī'ub, intersect, and are pegged to them with tapered dowel pegs, pāheng. At the top they rest in the roof-bearing disk, binnūlon, and are pegged to it with tapered dowel pegs.