Selected RIAAT Reference Projects

U5 Hamburg Metro

A new, approx. 5.8 km long subway line with six stops is planned for the development of the districts Bramfeld, Steilshoop, Barmbek Nord and City Nord (U5 East).

The U5 will be implemented as a fully automatic subway and thus corresponds to the state of the art. The shield drive will be built over a length of approx. 5 km with a 2-track shield. The four stop structures and five emergency exit structures will be constructed using the cut-and-cover method.

Application of the RIAAT process to create a digital twin for costs, schedule and risks within the framework of a probabilistic risk analysis

Project volume: approx. € 1,75 billion

2020 -ongoing / Hochbahn Hamburg

Source Image: Hamburger Hochbahn AG

Brenner Base Tunnel

Together with SFB-SRL from Rome, RiskConsult contributes services in the area of ​​risk management for the construction of the Brenner Base Tunnel (BBT).

The BBT will have a total length of 64 km, creating the longest underground tunnel in the world. The inner diameter of the two main tunnels, which run 70 m apart, is 8.1 m. A cross passage connects the two tubes at intervals of 333 m. A continuous exploratory tunnel is located in the middle between the two main tunnel tubes. Tunneling methods: 30% blasting, 70% TBM.

Application of the RIAAT process to create a digital twin for costs, schedule and risks within the framework of a probabilistic risk analysis

2020-ongoing / BBT SE

Source Image:

U6 extension Martinsried Munich Metro

The consortium RiskConsult and SSF Ingenieure contribute to the U6 extension Martinsried in Munich with services in the area of ​​risk management. With a new construction length of approx. 970m, the U6 line also opens up the Martinsried research campus.

Application of the RIAAT process to create a digital twin for costs, schedule and risks within the framework of a probabilistic risk analysis

Project volume: n / a

2020-ongoing / U6-PMG

Source Image: MVV München

Intersection U2/U5 Vienna Metro

RiskConsult emerged as the best bidder from the tendering procedure. For the extension of the U2 and the new construction of the U5, RiskConsult supports Wiener Linien in the implementation and execution of an integrated cost and risk management system.

Application of the RIAAT process to create a digital twin for costs, schedule and risks within the framework of a probabilistic risk analysis

Project cost: ca. 1 Billion €

2019-ongoing / Wiener Linien

Source Graphic:

International Airport Lima/Peru

Over 30 million passengers, numerous airlines and the entire airport community will benefit from the construction of the new Jorge Chávez International Airport in Lima. The new airport will strengthen Peru's position as an aviation hub, support its economy and boost its global reputation.

RIAAT was used in this project to analyze project cost risks and schedule risks in an integrated probabilistic cost and schedule risk model. The CEVP-RIAAT process, which was developed in cooperation with John Reilly, was successfully applied.

Image source: LAP

New York Subway: Canarsie Tunnel

Flooding caused by Superstorm Sandy inundated the Canarsie Tunnel with seven million gallons of salt water. The tunnel is on the main metro transit route between Manhattan and the Williamsburg and Bushwick sections of Brooklyn. On an average weekday, the L train carries 225,000 passengers through the Canarsie tubes. The rehabilitation included upgrading the Canarsie Tunnel facilities from 1st Avenue Station in Manhattan to Bedford Avenue Station in Brooklyn and three substations.

RIAAT risk assessment helped to identify and quantify which work items and issues may potentially affect the project. It also considered potential mitigation efforts to reduce the larger risk items and quantify the potential reduction in risk that can be achieved through risk mitigation.

Image source: New York Times

Hydro Power Plant Untere Tuxbachüberleitung

The water from Stillupp, Tux and Zemm rivers is currently used in the Bösdornau power plant for power generation. In the future, the water of the Tux river will be used to serve the existing Stillupp reservoir. At the confluence with the Stillupp reservoir, the height difference also allows the construction of a small power plant.

RIAAT was used in this project to model and analyze schedule risks.

Image source: Verbund

Ceneri Base Tunnel

Only with the 15.4-kilometer-long base tunnel under the Ceneri will the continuous flat route from Altdorf to Lugano become reality. After the Gotthard and Lötschberg base tunnels, the Ceneri Base Tunnel is Switzerland's third-largest railway tunnel project.

Like the Gotthard Base Tunnel, the Ceneri Base Tunnel also consists of two single-track tubes around 40 meters apart which are linked to each other every 325 meters by cross-passages.

RIAAT was used for project scheduling for the installation and commissioning of the railway equipment during the project phase.

Image source: AlpTransit

New Rhine Bridge Duisburg

The A 40 motorway connects the Ruhr area to the Lower Rhine and is therefore of great importance to the region. The Rhine bridge Duisburg-Neuenkamp was built in 1970. Today it has reached the limits of its resilience. The expansion of the A 40 motorway and the construction of a more efficient bridge, replacing the old one, are essential to ensure that traffic flows safely in the coming decades.

Project cost risks and schedule risks were analyzed in an integrated probabilistic cost and schedule risk model with RIAAT.

Image source: DEGES

Hydro Power Plant GKI

The joint venture power plant "Gemeinschaftskraftwerk Inn" (GKI) in the Upper Inn region at the Swiss-Austrian border represents the largest new construction of a hydroelectric power plant in the Alpine region in this millennium. The power plant has undergone comprehensive examination in both Austria and Switzerland. Following the completion of its four-year construction phase (2014–2018), it will generate 400 gigawatt hours per year.

RIAAT was used as a cost control software for the project. With the help of the program, a a cost controlling structure as well as concurrent services were established and implemented.

Image source:

Koralm Base Tunnel

With a total length of 20.4 miles/32.9 km and a maximum overburden of 4,100 feet/1,250 m, the double-tube tunnel will traverse the Koralpe mountain range and connect the Austrian states of Styria and Carinthia. The new railway track will reduce the travel time between the capitals of these states, Graz and Klagenfurt, from currently three hours to approximately one hour.

RIAAT was used for a quarterly conducted probabilistic risk assessment of cost and schedule risks along with workshop facilitation in the risk assessment process for the construction sections 2 and 3.

Image source: ÖBB

Rader High Bridge

In 2013, severe damages were identified at the Rader high bridge that resulted in an immediate partial closure for trucks weighing more than 7.5 t as well as a reduction to one open lane per direction. A remaining life span of 12 years was determined and reconstruction became inevitable.

Project cost risks and schedule risks were analyzed in an integrated probabilistic cost and schedule risk model.

Image source: DEGES

City Tunnel Feldkirch

The project is based on a new bypass road with an underground connection to the city of Feldkirch. The heart of the project is a four-arm underground roundabout.

A probabilistic cost estimation was done with RIAAT. A construction schedule was prepared to calculate the time-related costs.

Image source: Federal State of Vorarlberg

Airport Ljubljana

The existing passenger terminal at Ljubljana Airport, which covers 13,000 square meters, will be partly renovated and functionally incorporated with the new building. The entire renovated and expanded terminal complex will cover a total of 22,000 square meters.

A risk workshop analyzing potential risk impact on cost and schedule was facilitated. Results were analyzed with RIAAT and summarized in dashboards.

Image source: RiskConsult

Red Sea - Dead Sea Pipeline

The Red Sea-Dead Sea (RSDS) project was conceived to address the on-going water crisis in Jordan and its neighboring countries and the decline of the water level in the Dead Sea. It will provide potable water to Jordan and Israel and bring sea water and brine to the Dead Sea slowing down the water level drop and generate electricity to support the energy needs of the project.

RIAAT was used to identify causes or events that could lead to pipeline damage or failure using RAMS analysis.

Image source: David Shankbone

A13 Brenner Highway, Reconstruction Lueg Bridge

The Lueg bridge is one of the most complicated structures of the Brenner highway. The life cycle of the existing bridge will end soon. This means, it will be replaced by a new bridge. To facilitate the decision for various new bridge options, an integrated cost schedule analysis was conducted with RIAAT. Construction (base cost, risk, schedule) and life cycle costs were modeled using probabilistic methods. Cost and schedule were interlinked to account for time-related cost and cost due to schedule risks.

Life cycle costs were assessed using the net present value method with a probabilistic approach to account for uncertainties and sensitivity.

Image source: Asfinag

Geological Repositories for Radioactive Waste, Switzerland

NAGRA is responsible for planning deep geological repositories for radioactive waste.

RIAAT was used to estimate the cost of underground structures for radioactive waste disposal.

Image source:

BART Silicon Valley Phase II Extension Project

VTA’s BART Silicon Valley Extension Phase II is a planned extension of the existing San Francisco Bay Area Rapid Transit (BART) district system into Silicon Valley: a 6-mile extension (5-mile tunnel), 4 stations, and a Newhall Yard Maintenance Facility. Anticipated opening year ridership: 33,000 per average weekday.

In the planning phase, two alternatives were assessed: a single and a twin bore. RIAAT was used to analyze the project cost risks and schedule risks in an integrated probabilistic cost and schedule risk model.

Image source: VTA

Brenner Base Tunnel TBM Supply Train - RAMS Analysis

The Brenner Base Tunnel is one of the largest tunnel projects in the Alps. The complex drilling and blasting system used for construction required a speedy and reliable supply mechanism. Therefore, a special supply train was developed.

A RAMS (Reliability, Availability, Maintainability, Safety) analysis for the supply train was carried out with RIAAT to ensure maximum reliability and safety.

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Confederation Line, Ottawa

The Confederation Line is a Light Rapid Transit (LRT) public transportation system funded by a Public Private Partnership (3P). The project consists of a 7.8 mile/12.5 km long tunnel with 13 new stations currently under construction in Ottawa, ON, Canada, scheduled for completion in 2018. Three of the thirteen new stations will be underground, located in the downtown area of one of Canada’s largest cities.

RIAAT was used to evaluate the major risks during the construction phase of the subway station in Ottawa's city center.

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Lower Inn Valley Railway Corridor

The project includes the construction section 1 (Kundl-Baumkirchen) of the Lower Inn Valley railway corridor. The railway track has an approximate length of 40 km, 32 of which are subsurface.

To estimate the whole risk potential (2013-2018), the risks for all 25 contract sections were documented in a budgeting master plan using RIAAT.

Hydraulic Power Plant Mittlerer Inn

Innsbruck's municipal utility operator (IKB - Innsbrucker Kommunalbetriebe) is planning to construct a hydraulic power plant with a performance of 21 MW. The power plant is situated in the west of Innsbruck on the Inn River.

RIAAT was used to estimate the main dimensions and conduct a probabilistic cost estimation for four construction variants.

Bypass Omfartsvej Nykøbing Falster, Denmark

The aim of this project is the construction of a bypass to reduce inner city traffic in the Danish Harbor Town Nykøbing Falster. The new motorway passes Nykøbing in the east and stretches from Forest Avenue in the north to Gedser Road in the south. The aim is to particularly decrease traffic on the main roads 501 and 506. The bypass will increase road safety and improve accessibility of the surrounding areas.

RIAAT was used to evaluate the analyzed risks using a Monte Carlo Simulation.

Image source:

Power Station Spullersee

Investigation of variants for new construction of the power plant.

External plausibility verification of the base costs. Probabilistic base cost and risk analysis for comparison of variants with the software tool RIAAT.

Image source: ÖBB Infrastruktur AG