Metropolis support

My opinion to update existing support by replacing any subparts. At first, used standart hollow section 120x60 instead UNP120 - that way can avoid almost 4 m welding seams (join UNP 120 and plates). Second - used welding nut DIN 929 instead plate with threading. That will reduce production time and price. Total weight of this model is 45,805 kg (original 47,45 kg). Max stress is 59,2 MPa