Experience

Supply of two tunnel excavations via an approx. 120m deep access shaft.

At this project I developed the model and simulation to determine the performance, taking into account the contractually agreed construction methods.

The simulation modelled the construction process (cycle times, space requirements, material logistics) for different excavation lengths.

New building of an educational institution.

Expert opinion on the construction process regarding performance.

Analysis of the influence of the identified performance disturbances on the construction process.

Examination of identified deviations (performance, change orders, disturbances, etc.) with regard to their consequences and effects; integration into the overall construction process model (cost and schedule analysis).

Assignment of resulting delay and additional cost is assigned to the owner’s or contractor's sphere of responsibility.

The construction of the New Jorge Chávez International Airport requires an investment of approximately US$ 1,500 million. The new airport will benefit more than 30 million passengers. The Airport Development Program is managed as a megaproject. The investment group is led by Fraport.

Preparation and facilitation of interdisciplinary workshops on risk identification, risk analysis, risk mitigation, base cost and schedule and process validation. Project cost risks and schedule risks were analyzed in an integrated probabilistic cost and schedule risk model with the RIAAT cost and risk software.

Source Graphics: RiskConsult and atwonline.com

RIAAT (http://riaat.riskcon.at) is an advanced cost and risk management software program that allows to efficiently model processes and manage projects during their complete life cycle. It combines structured cost (work breakdown structure) and schedule input, cutting edge simulation and modeling capabilities.

The process is systematic, structured and transparent for all relevant project partners. Cost and time impacts are assigned to the work breakdown structure as well as the integrated cost and schedule model to simulate the project’s possible delays and subsequent time-related cost. Comparisons of alternatives are also carried out within the software.

Together with my team I have developed RIAAT on the grounds of my doctor thesis “Probabilistic Risk Analysis for Construction Projects”.

New construction of the 28 km long high-speed railway tunnel on the Vienna-Graz line (project volume approx. € 3 billion). Due to the involvement of many stakeholders and consultants in the project approval phase, it was decided to develop uniform processes for cost calculation. Based on the results, I developed the PEP (Projektkosten Ermittlungs Programm) software.

• Development of processes and for cost estimation
• Software development
• Training of project participants (processes, tools, communication)
• Interaction with the audit team, provision of data exchange tools
• Development of a reporting system to validate the cost calculation

Source Graphics: ÖBB and RiskConsult

PEP is freeware: http://pep.riskcon.at

The German Ministry for Transport and Digital Infrastructure (BMVI) initiated the "Reformkommission für Großprojekte". Their task is to identify problems in the planning and construction phase of large projects and reveal reasons for cost increases and delays. Possible solutions and guidance for cost transparency, efficiency and adherence to schedules shall be developed. The commission published their guidance on June 29, 2015.

Since 2016 I have been heading the resulting research project on the development and implementation of a risk management system for federal roads and freeways in cooperation with BMVI, DEGES and Oberste Bayerische Baubehörde.

The L train carries 225,000 customers through the Canarsie tubes on an average weekday and is the main transit route between Manhattan and Brooklyn. The rehabilitation (tunnel was damages during Superstorm Sandy) includes upgrading of the Canarsie Tunnel facilities from 1st Avenue Station in Manhattan to Bedford Avenue Station in Brooklyn and three substations. The tunnel consists of two under-river tubes with one track each, located below the East River.

I conducted the workshop organization, facilitation and risk modelling to identify and quantify which work items and issues may potentially affect the estimated schedule and costs for the project. It also considers potential mitigation efforts to reduce the larger risk items.

The analysis included also a comparison of two alternatives (closure of one or both tubes during construction).

Source Graphics: New York Times, RiskConsult

The train is a pneumatically operated supply train for a TBM in the Ahrental exploration tunnel of the Brenner Base Tunnel. The supply train runs automatically. This technology was introduced for the first time.

Together with my team, I conducted a RAMS (Reliability, Availability, Maintainability, Safety) analysis for the TBM supply train (ROWA Train) using bow-tie and fault tree analysis.

Source Graphics: ROWA and RiskConsult

NAGRA (Swiss National Cooperative for the Disposal of Radioactive Waste) is responsible for planning deep repositories for radioactive waste from nuclear energy, medicine, manufacturing facilities and the research industry.

Together with my team, I conducted the following services for NAGRA:

• Modelling of construction processes
• Optimization of construction and tunneling methods and comparison of alternatives.
• Cost Estimation (contractor approach) of underground structures.
• Development and implementation of processes for cost and risk analyses.

Development of costing software for 2016 cost study providing an aggregation of project cost including threats and opportunities according to the developed processes and waterfall diagram scheme. Latin Hypercube sampling is used for the probabilistic aggregation.

Source Graphics: NAGRA and RiskConsult