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ULMA Construction

ULMA has designed roll-back carriages by combining BRIO scaffold… Read More ULMA has designed roll-back carriages by combining BRIO scaffolding parts with MK system components.

ULMA Construction

Two carriages were used for steel reinforcement works and to wat… Read More Two carriages were used for steel reinforcement works and to waterproof the entire tunnel.

ULMA Construction

Lightweight mobile carriage combines falsework and formwork in o… Read More Lightweight mobile carriage combines falsework and formwork in one structure, which facilitates successive pouring in mine tunnels.

ULMA Construction

An economical and cost-effective solution using a high proportio… Read More An economical and cost-effective solution using a high proportion of standard rentable components.

ULMA Construction

Built-in safety components, including working platforms and acce… Read More Built-in safety components, including working platforms and access systems.

ULMA Construction

The TMK formwork panel, provided by ULMA as standard, has a meta… Read More The TMK formwork panel, provided by ULMA as standard, has a metal sheet that adapts to the different radii of the tunnel.

ULMA Construction

Based on the MK System, which uses variety of multipurpose eleme… Read More Based on the MK System, which uses variety of multipurpose elements to create an extremely versatile structure with high load-bearing capacity.

The A-4 Motorway expansion project includes building a new tube 1,204 feet long and the renovation of extant tubes. The new tube just north of the original tunnel will have four separate lanes for traffic traveling from Amarante to Porto; the original tubes will provide passage for traffic in the opposite direction. The project will improve travel for traffic going in and out of the city of Porto.

ULMA provided a scaffolding carriage to waterproof the tunnel, a carriage to install the rebar, and one to pour concrete into the tunnel. On average, 464 cubic yards of concrete went into each cast section, with a maximum of 544 cubic yards. Ready-mix trucks were easily able to pull up to the formwork carriage and pump the concrete.

Work cycles lasted about a day and a half, with 10 to 11 hours of pouring and three hours for adjustments. The adjustments included releasing the anchoring systems, and operating the hydraulic cylinder to open the side walls and then descend the carriage. Four cycles were completed weekly.

With a single carriage, it’s possible to create all of the dimensional variety needed for a tunnel, a facet that proved ideal for this tube design with four distinct sections. The carriage also allowed for vehicles to pass during construction, which is a necessity in such projects because of all the auxiliary construction work being done.

One of the complexities posed by the project was its location in an urban center with significant geotechnical risk, characterized by thin soil cover and areas of extremely weathered granite.

• Victoria & Albert Museum; Dundee, Scotland

  Linear concrete cladding mimics color and texture of Scotland's craggy cliffs.

  

• Faena Forum, Miami Beach

  Unique underwater construction method used to complete $1.2 billion project.

  

• Los Angeles Stadium, Inglewood, Calif.

  Lightweight aggregate is strong enough to hold together massive football stadium.

  

• Wain Road, Canada

  The contractor used Concrete Insulated Panels (CIP) to build this home north of the border.

  

• The Otto M. Budig Theater, Cincinnati

  Imperial wall panels, with a pour rating of 2,025 psf allowed for 16-foot pours to be done quickly and efficiently.

  

• 150 North Riverside, Chicago

  This LEED skyscraper overlooks the Chicago River.

  

• A-4 Motorway Expansion, Portugal

  Measuring 63 feet in width, this cut-and-cover tunnel will become the widest on the entire Iberian Peninsula.

  

• The Clement Canopy, Singapore

  This is the first structure on the island using an all-concrete version of the PPVC system.

  

• Cal State San Marcos Sports Center

  Thirty-three tilt-up panels were used to build this sports center in California.