Betonbau hat Zukunft – Visionen werden Realität

Structural Concrete has a Future – Visions are getting Reality Active management of aging civil infrastructure is a 21st century problem that must be urgently solved as the condition and safety of existing structures deteriorate. This problem will challenge our thinking, methodologies, and ability to incorporate new technologies into existing approaches across a spectrum of interested parties; scientists, engineers structural, public officials, and users. Although great progress in the fields of engineers structural management, construction, and structural health monitoring has been made, integration of the milestones in each field remains an area in need of research.     

Bauzeit und Baukosten für Stahlbetonarbeiten – Berechnungsmethoden und Anwendung

Construction Time and Cost of Reinforced Concrete Works – Calculation Methods and Application Construction time is of crucial importance when it comes to utilizing the production factors in an effective and efficient way. Construction periods that are too short usually result in higher cost, poorer quality and a larger number of disputes. This paper sets out to demonstrate the calculation of construction time whilst considering key construction management parameters. Beyond a simple, deterministic method, other options for calculation are shown that rely on probability calculus. The approaches described to determine construction time and cost are illustrated by a building project example. The deterministic method results in one value per each calculation process (calculation mode 1). In calculation mode 2, probability calculus is applied in a simple fashion. Both range and probability of occurrence can be considered for the relevant input variables. For the third calculation mode, the Monte‐Carlo method is applied using the @RISK software. For each of the parameters to be determined, this method shows a probability distribution.