Where does the plumbing, heating and wiring go?
Sing logs are the easiest to wire using the hollow cores as horizontal or vertical raceways, roughing in as the logs are erected. It is a simple matter to cut openings for boxes with a jigsaw or router. Plumbing is always best kept in interior walls anyway, and 2×6 stud ‘wet walls’ can handle any plumbing needs. Heating ducts can be likewise run in stud partitions or floor spaces.