http://swissbaync5d7ykaz7dh7v4qjrb4gmen5aj3bogxrcgbb43ij34bjuyd.onion/pdf/Books/Survival/Survival/shltrall.html
Across the hut from side to side notch in one
cross-beam to keep short logs in place. Lay a roof of logs, front to back, extending beyond wall. Notch the logs to fit
on to the cross pieces or lash them down.