 Their angle eventually violated city regulations for disabled-person access and in October 2006, the ramps were replaced with a composite design of stairs, disabled-access lift, and switchback ramps.The building was designed by the well-known architectural firm Munselle Brown Partnership Inc. of San Francisco (now Costa Brown Architecture), who were selected after winning an invited design competition, and Architects of Record, DES Architects + Engineers, Inc. as a Class A office building.Peter Munselle of the Munselle Brown Partnership prepared the winning architectural design concept.