Disk like structural member for use in e.g. road building, has vertical connections located between peripheral edges and between central areas of upper and lower concrete shells

摘要

Vertical connections (5-7) are located between peripheral edges and between central areas of upper and lower concrete shells (1,2). The connections are attached to the lower shell through trusses or diagonals. The lengths of the connections at the peripheral edge and central area are 1/18 and 1/15 of the distance between support points (3,4) of the shells.