The Alpha Xi Chapter of Zeta Beta Tau Fraternity has been housed in the same house at 7020 Forsyth Avenue for over 50 years. Located closer to the South 40 than Fraternity Row , ZBT has maintained a powerful presence at Wash. U. for decades. From Alpha Xi's founding in 1923 until 1946, ZBT at Wash. U. was housed in Karl Umrath hall above the "Rat".