Hangar for the Shah aircraft, in Teheran

Abstract

A hangar for the Shah's private aircraft has been built in Teheran. It has a suspended roof, of aluminium corrugated sheeting. The project was made by Mr. Jawerth, of Stockholm, and the construction was carried out by a Swedish contractor. The hangar is 56 by 30 m, and its structure consists of a number of columns, joined by a triangulated cable framework. These columns are stabilized by guy cables, anchored outside the hangar. Each cable structure has a supporting cable, and another lower one, which serves to stretch the supporting cable. A third cable ties the other two cables together at a number of points. The construction was done by non specialized labour. First the columns were placed in an inclined position, and the cable framework was set up. Then the guy cables were stretched, to place the columns in a vertical position. After this, the cable framework was sufficiently tightened to support the weight of the roof, and, to remain stable under normal conditions. The loads applied to the guy cables were determined by the initial inclination of the columns, and the amplitude of oscillations induced in the cables. The entrance to the hanger has two parts, with three closing units each. An electric motor is provided to close and open them.