Page T1.2 . 18 November 2009                     
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    Inspiring Infrastructure

    continued

    Renovations at Wimbledon

    At the All-England Club in Wimbledon, United Kingdom, home to the famous Wimbledon tennis championships, structural engineering firm Edge Structures Ltd undertook a four-year alteration and addition project. The scope included redeveloping the east stand of center court, extending the terrace to provide an additional six rows of seating, and adding a retractable roof for adverse weather conditions. Bentley recognized the project for innovative structural engineering.

    The project was staged around the annual championships, a feat that required collaboration among the design team, main contractor, and supplier fabricators. One championship had to be played without a roof, but modeling and testing helped make the decision about whether part of a new roof could be built in time to provide at least some cover. Prefabricated sections of box trusses were stored locally so they could be erected right after an event and before preparations for another.

    Bentley Triforma and Bentley Structural software were used in early design stages. Simulations were used to communicate with stakeholders and ensure scheduling and phasing between the championships.

    Bridge for Da Nang

    A landmark new cable-stayed bridge over the Han River is planned for Da Nang, Vietnam. Design, engineering, and management consultancy WSP Finland Ltd. designed the Nguyen Van Troi–Tran Thi Ly Bridge, recognized by Bentley for innovative bridge design. The 700-meter- (2,300-foot-) long bridge will replace two smaller bridges, expanding capacity with a six-lane concrete bridge. The main span will measure 230 meters (750 feet), and the total deck width will be 34.5 meters (113 feet).

    Highlights of the bridge design include a central inclined tower attached to the bridge by illuminated spiral cables and back cables anchored outside the deck on both sides of the bridge. Main span cables will be located in a single plane in the middle line of the bridge. The bridge will include minimal supports in the river, with the main span achieved through cantilever construction. A public viewing platform, reachable by elevator, will rest on the inclined pylon tower, which will rise 145 meters (476 feet) from the water. Construction is scheduled to begin in early 2010.

    Bentley RM Bridge 2006 software was used for optimization of the structure, especially the stay cables, and for stage-by-stage analysis of the bridge construction.

    Hospital Renewal in Dayton

    Architecture firm NBBJ designed a $135 renewal project for Miami Valley Hospital in Dayton, Ohio, increasing the amount of green space and the sense of openness on the campus. The project includes a 12-story, 440,000-square-foot (41,000-square-meter) facility housing an integrated heart center and seven floors of adaptable patient rooms that can transition from low-acuity to intensive-care.

    The campus will have a central courtyard with a front entrance that includes a landscaped area with garden pathways. Traffic congestion will be managed by routing traffic to the perimeter of the campus rather than through the campus center.

    The design team used Bentley Architecture XM as the BIM modeling platform for delivering construction documents, environmental studies, and design studies. BIM was also used to develop a standard inpatient room design and to manage the complexity of medical systems.

    Environmental impact was reduced in several ways, such as through acuity-adaptable patient rooms, gardens that maximize green space and bring daylight into the structure, reduction of water usage by 20 percent, use of locally produced materials that are highly recyclable, and the reduction of construction waste. Bentley recognized the design for innovation in building.

    Fire Station in Citrus Heights

    KASL Consulting Engineers faced several challenges as project engineers for the new Metro Fire Station No. 29 in Citrus Heights, California: the relocation of existing utilities above and below ground, and the owner's desire to retain as many trees as possible and maintain a pleasing visual impact for surrounding residents. The project was recognized in the category for cadastre and land development.

    The $4.5 million, 15,000-square-foot (1,400-square-meter) structure required significant soil excavation, retaining walls that could lower the building pad elevation while concurrently preserving trees, and change in the drainage patterns of the site. Earthwork and grading minimized the visual impact of the 30-foot- (nine-meter) high building. As required by the county, a stormwater management system was included, comprising vegetation swales and infiltration areas to control peak flow impact on areas downstream. Other considerations included accommodating the turning radius and circulation patterns of emergency vehicles.

    Bentley ProjectWise was used for collaboration between design consultants and the client. MicroStation InRoads and Civil Storm were used for roads and water drainage management, respectively.

    Updating O'Hare

    The $3.3 billion first phase of a modernization program at O'Hare International Airport in Chicago, Illinois, entails the construction of a new runway, a runway extension, and a new air traffic control tower for the north airfield. Phase 1 is scheduled to be completed in six years while the airport continues operations.

    CH2M Hill is serving as master civil engineer, working in a joint venture with four Chicago-area firms. CH2M Hill launched design simultaneously on all major and enabling projects; over 600 people worked on the project from over 30 offices, using MicroStation and ProjectWise for project collaboration and to manage over 100,000 MicroStation design files.

    Because the project involves relocating a creek, a railroad, a major airport guard post, a high-pressure water main, and lighting control vaults, earth excavation was a primary part of the construction, with 14.7 million cubic yards (11.2 million cubic meters) of dirt moved in Phase 1. By decreasing the distance earth was hauled from one mile to half a mile (from 1.6 to 0.8 kilometers), up to $33 per truck load could be saved, translating into an overall savings of about $1.5 million.

    The project was recognized by Bentley in the awards category for campuses, airports, and military installations. CH2M Hill also serves as project manager and design manager leads for the north and south airfields for both Phase 1 and the Completion Phase.   >>>

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    Perspective section rendering of Worcester Library and History Centre, showing airflow patterns.
    Image: Courtesy Feilden Clegg Bradley Studios Extra Large Image

    ArchWeek Image

    A retractable roof and additional seating were part of a four-year alteration of Wimbledon Centre Court at the All-England Club in Wimbledon, England, with structural engineering by Edge Structures Ltd.
    Photo: Courtesy Edge Structures Ltd. Extra Large Image

    ArchWeek Image

    Wimbledon Centre Court structural model with roof structure.
    Photo: Courtesy Edge Structures Ltd. Extra Large Image

    ArchWeek Image

    Wimbledon Centre Court structural model without roof structure.
    Photo: Courtesy Edge Structures Ltd. Extra Large Image

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    Rendering of a structural model of a building by NBBJ now under construction at Miami Valley Hospital in Dayton, Ohio.
    Image: Courtesy NBBJ Extra Large Image

    ArchWeek Image

    NBBJ's design for Miami Valley Hospital includes the 12-story, 440,000-square-foot (41,000-square-meter) Heart Tower.
    Image: Courtesy NBBJ Extra Large Image

    ArchWeek Image

    Rendering of Metro Fire Station No. 29 in Citrus Heights, California, depicting landscaping and a new stormwater management system.
    Image: Courtesy KASL Consulting Engineers Extra Large Image

    ArchWeek Image

    Annotations within a saved view in a 3D PDF model of Metro Fire Station No. 29 facilitated collaboration between consultants and the client.
    Image: Courtesy KASL Consulting Engineers

     

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