1301 Pennsylvania Avenue

1301 Pennsylvania Avenue is a 13-story 29,357 m² office building located in Washington D.C. and designed by Helmut Jahn. Werner Sobek’s scope for this project includes the special facades featured in the building: the screen and the lobby walls. On the main elevation, suspended from the roof level down to the lobby, is the screen wall constituted by a structurally-optimized cable wall facade with story-high glass panels and stainless steel cables and fittings; while establishing the major presence along Pennsylvania Avenue, is the lobby wall: a 2-story high glazed facade supported by glass fins. The design of the glazed skin of the building has been engineered in order to attain to the highest performance standards.


Jahn, Chicago/USA

Planning time
2010 − 2017

Construction time
2017 − 2018

Services by Werner Sobek
Facade engineering for special facades

25,680 m²

Quadrangle, Washington D.C./USA


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