Istanbul Grand Airport Plaquette of Appreciation Conventional  steel and space frame roofing structures of İstanbul Grand Airport (IGA) pier buildings , which is 145.000 m2 , with digital modelling, structural design, fabrication and erection has been carried out by Polarkon. Polarkon  proudly states that , the whole  construction  are  now almost at completion stage and completion of 65.000 m2 area within 3 last