Which method joins corners in log houses?

• A. Interlocked at the corners by notching.
• B. Mortared joints with bricks.
• C. Bolted steel corner plates.
• D. Screwed lapped joints.

Answer: (A)

In log-house construction, corners are joined by interlocking notches. Shaping the ends of the logs with a notch allows each log to sit securely on the one below, so the corner logs lock together and transfer loads efficiently. This creates a strong, stable wall that resists spreading and helps seal gaps without relying on mortar.

Mortared joints with bricks belong to masonry construction, not log construction. Bolted steel corner plates are a modern alternative used in some timber systems, but they’re not the traditional method for log houses. Screwed lapped joints describe fasteners typical of other framing methods, not the interlocking corner that characterizes classic log construction.