Selected RIAAT Reference Projects

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.