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BUILDING FUNCTION 89Pamplona. In the main building, columns separate spaces with differentfunctions (Fig. 5.16). A row of closely spaced columns runs the length ofthe two main corridors, dividing each into two unequal widths. Columnspacing of only 1.5 m contributes to a powerful colonnade experience.Where corridors pass an interior lobby or a waiting area, an extra row ofcolumns separates and screens the two spaces from each other.▲ 5.16 Public University of Navarra,Pamplona, Spain, Sáenzde OizaArquitectos, 1993. Columns to the left runalong the corridor length and those to theright define the corridor width in theabsence of side walls.Structure plays a similar screening role and separates different uses ofspace at JFK Airport Terminal 4, New York. Immediately inside the maindoors to Departures, structure creates an entry zone en route to theticketing areas (Fig. 5.17). Longitudinal anchor braces that stabilize thewhole terminal and a series of slightly inclined and the inverted chevronbraces that provide full three-dimensional triangulation, define the zone’slength. It is unusual to see braces with such a low angle of inclination thatpotentially reduces the amount of usable space beneath them, but most ofthe suspended floor beneath the braces is voided to create a spaciousdouble-storey Arrivals area beneath. A row of vertical V-struts signalscompletion of the ticketing process (Fig. 5.18). Stairs lead down to aforecourt and retail outlets and departure gates. On the upper level,bridges span towards another permeable structural wall and the airlineclub lounges beyond. Structure thus delineates the extent of entry in planand then separates the bulk of the terminal space into three differentfunctions.At the Education Centre, Newport, structure also separates spaceswith different functions by screening them off from each other. In thiscase a gently curved row of timber paired-poles separates a teaching▲ 5.17 JFK Airport Terminal 4, New York, USA, Skidmore Owings &Merrill, 2001. Structure occupies the entry zone with the entrancesto the left.▲ 5.18 V-struts separate ticketing areas to the left from acirculation area and retail outlets on the floor beneath.