Figure 261.—Types of house ridgepole support, a, median ridgepost, Cook Islands. b, kingpost with tie beams supported by two lateral posts, Samoa. c, kingpost with tie beam supported by wall plate, post-missionary. 1, median ridgepost; 2, ridgepole; 3, wall posts; 4, wall plate; 5, principal rafters; 6, lateral supporting posts; 7, plate supporting tie beam; 8, tie beam; 9, kingpost; 10, plates resting on ends of tie beam and supporting rafters; 11, median plate supporting kingpost.
Note: the second ridgepole, purlins, and thatch rafters are omitted. The Samoan rafters are curved and kept in position by collar beams which are also omitted.