The phrase "about as ordinary" is correct and usable in written English.
It can be used to describe something that is very typical or unremarkable in comparison to a standard or average.
Example: "The movie was about as ordinary as they come, lacking any unique plot twists or memorable characters."
Alternatives: "quite ordinary" or "fairly average".
Until February, Nathan and Elisa Bond were about as ordinary a 30-something couple as you could find in Brooklyn.
Walt Whitman, ever the Lincoln eyewitness, described Lincoln "coming to business" one morning at 8 30, riding tall down Vermont Avenue to the White House: "Mr. Lincoln on the saddle generally rides a good-sized, easy-going grey horse, is dressed in plain black, somewhat rusty and dusty, wears a black stiff hat, and looks about as ordinary in attire, etc., as the commonest man".
Neither forceful nor particularly slimy, his characterization of the Reverend Olin Blitch was about as ordinary a preacher as one might find, That banality, of course, may be the true face of evil.
In fact, the speed with which the sun goes around the center of our galaxy suggests that dark matter ought to be about as abundant as ordinary matter at our distance from the galactic center, about 27,000 light-years.
According to a Microsoft employee who has seen the device, the Courier is about as big as an ordinary paperback and folds out to reveal two screens.
Yes, you're a prep-school kid turned leveraged-buyout tycoon with about as much grasp of what ordinary people go through as Michael Bloomberg or your new pal Donald Trump.
The standard is not high - about as good as but more plentiful than ordinary airline food.
Since the novel H1N1 virus infection so far appears to be about as severe as ordinary seasonal flu, parents should seek a doctor's help if the child seems to have a severe case or is at high risk for complications.
As a result, it ends up costing about twice as much as ordinary water.
Like AB senior theses, a BSE senior thesis will take 2 semesters and the final report is expected to be about twice as long as an ordinary single-semester Independent Work project.
It appears that ordinary Americans are about as willing to blindly follow orders to inflict pain on an innocent stranger as they were four decades ago.
