See, and I'm not debating this, but I personally wouldn't generally go about it that way.
That's the great thing about ramping, everyone's got their one style.
I'd probably do something like, (assuming 315 lbs on a bench is the work weight,)
Bar x 10 just to get loosened up, with some rotator cuff stuff, etc.
95 x 12-15
135 x 12
185 x 6-8
225 x 5
275 x 2-4
315 x whatever
or, if I felt like I didn't need so much warm-up, maybe something like...
Bar x 10
95 x 15
155 x 10
235 x 6
285 x 3
or something like that. Still basic formulas.
But then, like twiceborn here, I know guys who a lot of doubles and singles when working up. It's all preference, imo.