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Contractors World International - 2015 Vol 6 No 2

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Formwork & Falsework International Vol 2 No 1

If Its Big and Ambitious Then It Must Be Texas! - Page 3 of 3

They are constructing the elevated managed lane direct connectors between NB IH-35E and IH-635 adjacent to the existing general-purpose lanes of IH-35E. They are also constructing ramps and frontage roads along this corridor. All of this work will serve as the entrance to the IH-635 corridor from the South.

For this project, Archer Western selected EFCO to provide forming systems to construct the multi-column, hammerheads and straddle bridge caps requiring over 5,000 yd³ (3800 m³) of structural concrete.

EFCO supplied round column formwork for 48” (1200 mm), 60” (1500 mm) and 72” (1800 mm) columns up to 48’ (14.4 m) in height. EFCO PLATE GIRDER panels were also used to form 8’ x 5’ (2.4 m x 1.5 m), 9’ x 6’ (2.7 m x 1.8 m) and 12’ x 7’ (3.6 m x 2.1 m) rectangular columns also topping out at 48’ (14.4 m) height. Approximately 4,600 yd³ (3,500 m³) of concrete were placed.

       In addition to the column formwork, Archer Western also utilized the EFCO PLATE GIRDER for all of its bridge cap formwork. The bridge caps ranged from 4’-6” x 5’-6” (1.35 m x 1.65 m) multi-stem caps to 40’ (12 m) long hammerhead caps that were 7’-6” (2.25 m) wide and up to 12’ (3.6 m) deep, to post tensioned straddle caps that were up to 10’ (3 m) deep, 6’-6” (1.98 m) wide and form lengths up to 96’ (28.8 m) long.

EFCO 6’-0” (1800 mm), 9’-0” (2700 mm) and 12’-0” (3600 mm) PLATE GIRDER panels were utilized throughout the job and handled the majority of the work.

With the extra heavy loading of some of the caps and the offset hammerhead caps the standard EFCO 50K and 100K per leg shore tower systems were used in conjunction with 70K support brackets for the cap support.

Radius back brackets and standard flat back brackets were both utilized on this project to provide support solutions that best fit the requirements of the cap.

Archer Western
Trinity Infrastructure LLC



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