WASHINGTON, D.C.: Developed over the last few years in partnership with the YMCA, manufacturers SIG and project managers Aecom, this 36-unit “Y:Cube” project is the practice’s latest foray into off-site manufactured housing, a dream Richard Rogers has entertained since his “Zip-Up” concept house in the 1960s – an unrealised fantasy of a modular pink prefab pod on stilts…