The paper considers models of monolithic flat floor slabs with five spans in both directions. cell sizes are 6×6m, 6×9m, and 6×12m. calculation method is based on the application temperature load rope modeling rod elements. It shown that post-stressing should be used for slab side lengths over 7 m, as installation pre-stressed reinforcement shorter less feasible causes high economic costs.

Post-tensioning structures with metallic ducts risk corrosion, rupture or collapses due to chloride ingress. The use of tight corrugated polymer combined electrically isolated anchorages (EIT) changed the situation. Laboratory and many field applications proved tightness duct, showing resistance values higher much than 50 kΩm, acceptance criteria for a duct. most important fact is that EIT tend...