The phrase "at a common practice" is not correct in English.
Did you mean "as a common practice"? You can use the corrected phrase when referring to something that is typically done or accepted in a particular context or field.
Example: "Using email for communication is considered as a common practice in the business world."
Alternatives: "as a standard practice" or "as a usual practice".
Gen. Norton A. Schwartz, the chief of staff of the Air Force, told reporters that only some remains from the Sept. 11 attack on the Pentagon — but not remains from the plane crash site in Shanksville, Pa., "as best we can tell" — were ordered incinerated by the Department of Defense in what he described as a common practice at the time.
Many appellate courts have already approved the use of badge numbers by undercover officers at trial, a common practice in drug cases.
The independent board member meetings, which will be required within six months of the SEC's adoption of the new rules, are currently "not at all a common practice," says Monaco.
In interpreting hypothesis-testing results, the type I error level was set at 0.05, a common practice for research studies like this.
The controller was the only person in the tower at the time, a common practice during the overnight hours at even busy airports because traffic slows to a very limited number of planes taking off and landing between midnight and 5 a.m.
In addition, a furor arose when it emerged that Mr. Freeh had been contemplating awarding bonuses to MF Global executives who remained at the firm, a common practice in bankruptcies.
It was not clear whether someone from the Bronx prosecutor's office or from the Police Department is suspected of directly aiding Ms. Troiano by calling in a favor, or "if she made her position in law enforcement clear to the officers," said the official, who did not know if Ms. Troiano was carrying a shield at the time — a common practice.
They are believed to have conducted an English lesson at the cafe - a common practice in Japan.
Nowadays, she said, at Christmas it is a common practice to make gifts to charities in the name of journalists.
The case points out the inherent difficulty of laying out a drugstore with the pharmacy at the farthest reaches, a common practice that frees space in the front for merchandise.
