What establishments (clubs, lounge, restaurants) in DC have strict dress codes?

I am writing a paper and doing a case study on dress codes in DC. Im new to the area and dont know a lot of the hip palces so I need help. Any specific places with specific dos and donts of dress would be great. Or any insight! ThanksWhat establishments (clubs, lounge, restaurants) in DC have strict dress codes?
Two that come to mind are Lucky Strike Bowling (701 7th Street NW - Second Floor, at Gallery Place/Chinatown) and The Prime Rib (2020 K Street NW), which requires suit jacket and tie after 5:00 p.m.



Additionally, many of the clubs downtown around K Street NW and 14th Street NW request "business casual" or "dress to impress -- nothing too baggy or too casual..."What establishments (clubs, lounge, restaurants) in DC have strict dress codes?
I can't think of one except posh hotel's when they have ball's and parties