My house was built in 1957. The exterior wall framing is all true 2" x 6" lumber on 12" centers, clad with 1" x 8" lumber and then bricked. The rafters for my roof are all 2" x 10" with cross braces vertically and laterally. I was joking with a neighbor that one of the giant pine trees in the yard could fall on the house and not make a dent. He told me that 10 years before we moved in that exact thing happened and all they had to do to fix it was put new shingles on. Built like a fortress....but at the same time obviously wired and plumbed by a mad man. Half the wiring is the wrong color, outlets are wired with lamp cord, and the master bath vent stack used to just end in the attic.