Problems of the Reconstruction of Motorways in the Gdr

The 1860 kilometre GDR motorway network was mainly built in concrete slab construction before 1945. Its overall reconstruction is vital. In the course of reconstruction work a number of different paving variants were put into practice. The covering of unbound and nearly impermeable bases needed the drainage of the intermediate layer. As a steady and possibly continuous use of the slip form pavers is desirable, all services before and after the concrete placement itself including those of the producing units, should be well coordinated. Using project network techniques software dialog-oriented construction schedules were considered.