In the case of the B (or center) pillar on four-door sedans, the pillar is typically a closed steel structure welded at the bottom to the car's rocker panel and floorpan, as well as on the top to the roof rail or panel.
On an average a period lasts between 3 to 5 days. It is normal for a girl to have irregular periods in the beginning. During this time, the duration of her periods may vary from as short as 2 days to as long as 7 days. It can take up to a year for periods to become regular.
Best Answer: Each women differs. A period can last from 3 days to a week. It is even possible for a women to have it longer. It is very normal for the period to last longer then 7 days. Source(s): http://en.wikipedia.org/wiki/Menstrual_c...