It depends on the school, but here in the US it is generally expected that the majority of students return home for the summer. Most universities have housing available over the summer but it is limited and generally reserved for those with disabilities and graduate students who are expected to attend the school for 4+ years. Most college students only go for a year or two.

88v would be well in the territory of a brownout, but according to that graph you are sitting comfortably within 10% of 115v, with one exception. This isn't bad, if you viewed the graph with the y axis range set from 0v-140v it would look nearly flat. I wouldn't worry about it, the UPS will handle the small transient stuff.

The silicon die could easily chip a tooth as well, the stuff is insanely hard.

There is, quarter the log then cut boards from alternating sides of the resulting right angle.