Concrete traffic barricades come standard in 6′ or 12′ lengths, which is a problem when you need them less than 5′ in any direction, and still weighing at least 3000#. This is the sort of thing I do at work. Tomorrow, I’m in a harness, in a swingstage, changing lightbulbs in a scoreboard.
There are hundreds of different grades of cement and concrete, including a variety that floats. Engineering students make canoes out of this stuff and race them.
Yes they do:
There also exists about a hundred different grades of paper, and keeping track of those is a job skill unto itself. Owning a printer doesn;t make you a publisher.
Writing a book, though, makes you a marketer – and paper is only one format. More on that in Writing Made Visible
(updated after some neglect.)
And Fossil Springs Road is closed for the summer. More on that in Are We Lost Yet?
Now you know.