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When completed the expressway will relieve the severe traffic congestion that is a regular occurrence. portion of this overall project. Archer Western is working on a $12M segment of this project on the East side of IH- 35E from Loop 12 to IH-635. 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. • EFCO • Archer Western • Trinity Infrastructure Page 28 Contractors World International Vol 6 No 1
Doka Concremote - online measurement of concrete-strength in real time The Austrian formwork company, Doka, has introduced more technology to the job site with its innovative Concremote system. Concremote determines fresh concrete-strength development on the structural element to help speed up the construction processes and increased safety. A key parameter affecting the construction workflow is the development of compressive strength and hydration heat of concrete during construction. Stripping and curing times and the time for prestressing are all calculated based on concrete-strength development, for instance. Heat development measurements are important for monitoring stresses in the component that develop as a result of temperature variances. It helps avoid cracks and future structural damage. Based on measured concrete-strength values, Doka Concremote concrete monitoring enables users to determine the steps to be taken and thus ensure and optimise the construction process. The trend towards industrialisation of building processes has been evident for some years as more an more processes benefit from close monitoring that modern technology makes possible. However, some measurements are still determined obtained by testing laboratories, manually and at great labour costs. These are becoming fewer as automated processes take over. Concremote makes an active contribution in this regard. Usually construction companies determine concrete strength by means of general target values and/or complicated testing methods. The Doka Concremote makes it easier as it combines the established weighted maturity method with modern measuring and information technology. By incorporating sensor placement into the casting process, the system measures concrete strength by way of heat development. There is no need for a person to be present on the site for reading and securing the measured data. Sensors measure temperature development of the fresh concrete at regular intervals and transmit these data to a computing centre. Here, the weighted maturity method is used as the basis for calculating and providing reliable information on the strength development of the concrete in real time. Concremote uses two types of sensors: slab sensors, which are inserted in the fresh concrete after it has been screeded and cable sensors that are incorporated directly into the form-ply of the wall formwork and repositioned together with the formwork. Contractors World International Vol 6 No 1 Wireless transmission of the measured values starts automatically. The system’s life-long batteries, sturdy sensors and wireless data transmission make it highly user-friendly reliable and able to withstand the harsh environment. Measuring results can be accessed at any time on a secure web portal. Also, users can be alerted by e-mail or text-message as soon as the specified early strength has been reached. The systems offers wide-ranging possibilities for optimizing the construction process: if a customer has entered a specific target value for a site, the strength values enable him to make precise recommendations regarding e.g. the earliest times for stripping the formwork, climbing and prestressing, and for the end of curing. The real-time measured data can also be taken into consideration for optimizing the concrete formulation. • Doka Page 29
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Page 7 and 8: TECHNOLOGY YOU CAN TRUST C-SERIES C
Page 9 and 10: Panorama Video: 4.00 min Panama Sec
Page 11 and 12: Panorama Italy Milan Out Bypass to
Page 13 and 14: Six lanes over the Sea of Marmara -
Page 15 and 16: Hydrodemolition Efficiency in Tunne
Page 17 and 18: Steele Knows Dirt Natural Gas Boom
Page 19 and 20: STRUCTURAL installed hot applied wa
Page 21 and 22: A Contractors World International S
Page 23 and 24: increments. At peak there was more
Page 25 and 26: Turner Access Launches the New Turn
Page 27: will be nearly doubled with the cre
Page 31 and 32: The 20 m long bridge deck sections
Page 33 and 34: Germany Upmarket Residential Comple
Page 35 and 36: Super Mega Brace for its first majo
Page 37 and 38: - along with the working platform i
Page 39 and 40: In the first construction stage of
Page 41 and 42: Contractors World - Intermat Previe
Page 43 and 44: and large residential or commercial
Page 45 and 46: EXPERIENCE THE WIRTGEN GROUP AT INT
Page 51 and 52: A Whole New Family of Cats Play in
Page 53 and 54: What’s New In Plant & Equipment c
Page 55 and 56: What’s New In Plant & Equipment e
Page 57 and 58: What’s New In Plant & Equipment N
Page 59 and 60: COMPANIES FEATURED • Archer Weste

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