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No 2 • Separate Placing Booms Flying at Denver The only magazine dedicated to the formwork, falsework, concrete and scaffolding industries worldwide No 2 • Separate Placing Booms Flying at Denver Airport • Tartu Bridge Is Big Challenge • Warsaw Spire, Warsaw, Poland • New flood retention reservoir essential • Insulating Concrete Formwork • Switzerland’s largest private construction site • Tallest Residential Building in Western Hemisphere Published by VVV Limited Publisher / Editor Editorial Comment Roger Lindley Email: [email protected] Tel: +44 1279 600598 Formwork & Administration Colleen Lindley Falsework Tel: +44 1279 600598 Supplement Group Advertising Director Darren Dunay Email: [email protected] Tel: +1 201 781 6133 USA Holly Hicks [email protected] From 2015, Contractors World will publish a quar- +1 412 660 5360 terly supplement devoted to formwork, falsework, OH, PA, MD, WV, VA, NC, SC, GA, FL scaffolding and concrete placement. Don Sherbo As structures get more complex and reach unim- Rummel Media Connections [email protected] aginable heights, so they introduce different challenges + 1 608 215 8852 to contractors. MN, IA, MO, AR, LA, WI, IL, IN, MI, KY, TN, MS & AL Often these stretch engineering to the maximum as seen with the 432 Park Avenue tower in New Germany, Austria & Switzerland Email: [email protected] York. Without the aid of chemists and physicists who Tel: + 49 2131 40 26 493. developed new concrete additives and specially en- gineered foundations, the structure could not have ©VVV Ltd. 2014 All Rights Reserved been built. CONTRACTORS WORLD Around the world, countries such as Estonia are CML House playing catch up with the rest of the world and so 7 Bell Mead Sawbridgeworth have to become familiar with construction techniques Herts CM21 9ES that we take for granted. UK Tel: +44 1279 600598 Bridge forming systems, for instance, have to be Email: [email protected] URL: http://.cwmags.com used by fully trained engineers. Therefore, more and more, companies in this sector are providing training, Contractors World Magazines and supple- technical drawings and support services. They are ments are independent publications. The mention of companies and/or products within more sub-contractors than suppliers. the editorial pages or in advertisements does not infer any endorsement by the publisher or editors. If you are involved in such work, we would be in- All editorial is freely given, without conditions terested in receiveing reports on what you are doing and at the sole discretion of the editor. Specifications are given for guidance only for possible inclusion in future issues. and working practices illustrated are not necessarily endorsed by the publishers. This also offers a unique advertising opportunity Other than saving and distributing in complete page formats, copying, reproduction, decoding or disas- to reach the very people with an interest in your sembly of content or computer code by any means solutions. of any part of the publication is prohibited unless prior approval is provided by VVV Ltd in writing. PDF version can be downloaded for personal use only. No part of the publications can be used for promotional purposes. Items may be linked to content on our servers but not embedded into other pages. Page 2 Contractors World - Formwork Supplement No 2 EDITORIAL CONTENTS 4 Separate Placing Booms Flying To Complete Denver Airport Expansion Like air traffic over busy Denver International Airport, concrete placing booms are flying regularly over the first major expansion at the site since the early 1990s. 7 Estonia: Tartu Bridge Is Big Challenge The bypass round the city of Tartu is a large-scale infrastructure project now under construction.. 9 Warsaw Spire, Warsaw, Poland The Warsaw Spire office complex is currently being constructed in the capital city of Poland. 12 New flood retention reservoir essential Repeated flooding had forced a German town to take flood protection measures. Even 5 - and 10-year floods represented a serious threat. 14 Insulating Concrete Formwork Fast and cost-effective house-building. Mainstream volume housebuilders could benefit from the speed and performance of insulating concrete formwork (ICF). 15 Switzerland’s largest private construction site When faced with the challenge of building a gigantic new production and logistics centre for the contractor again opted for MEVA formwork. 17 Tallest Residential Building in Western Hemisphere Rises High Located on what is dubbed as “Billionaire’s Row,, 432 Park Avenue is a 27.5 x 27.5 m (90 ft x 90 ft) square luxury condo building being erected 426 m (1,398 ft) high. 21 Companies Featured Contractors World - Formwork Supplement No 2 Page 3 Separate Placing Booms Flying To Complete Denver Airport Expansion Page 4 Contractors World - Formwork Supplement No 2 ike air traffic over busy Denver International Airport, concrete L placing booms are flying regularly over the first major expansion at the site since the early 1990s. A new 516 room hotel and transit center is being constructed at Denver International Airport by Mortenson, Hunt, Saunders and Brundage-Bone Concrete Pumping is supplying the pumping equipment and expertise. Brundage-Bone is pumping the con- crete on the 65 m² (700,000 ft²) South Terminal Because one of Denver Airport’s iconic tents would have to be re-an- chored to accommodate construction, two “crucifixes”were buried early in the project. “It was quite a process,”explains Josh Joiner,, Brundage-Bone placing boom operations manager. “We had two 39 m boom pumps working simultaneously to fill the 1.8 m Two 39 meter Schwing separate placing (72”) diameter caisson that held the tem- booms with 35 meter horizontal reach porary support. The crucifixes had to be were chosen for the project. After boom aligned perfectly to provide a two-point pumps completed the second level, the anchor for one end of the tent.” booms were attached to 15 m (50 ft) masts that were mounted in base frames The large excavation for the station, and anchored to level one. located at the end of the south terminal, measured approximately 457 m x 274 “Moving the booms could take up to m (500 yds x 300 yds). Hundreds of an hour,”according to Joiner, “Because the caissons were drilled and the voids filled shoring wouldn’t allow the weight of the by Brundage-Bone using Schwing 39 m boom on the deck we had to swing them concrete pumps. off the footprint and set them in a cradle on the ground. After we moved the mast, The 18 m (60 ft) deep drilled caissons we could remount the booms.” each required 23 m³ (30 yds³) of 25 mm (1”) minus aggregate mix. In late 2013, Weight of the SPB 35 is 5,828 kg Brundage-Bone pumped the slab on grade (12,850 lbs) without the powerpack and using “Everything from our Schwing 32 8,505 kg (18,750 lbs) combined. After level meters to our 61 meters,”according to four was completed the booms and masts Joiner. were easily transitioned into floor frames. Contractors World - Formwork Supplement No 2 Page 5 To clean out the line, crews use 120 psi air pressure generated by a 375 cfm air compressor to blow back the clean out balls into ready-mix trucks through a candy cane- shaped outlet at ground level. After 13 months of pumping, the Brundage-Bone crew is proceeding with the With this mounting method, the masts hotel that is being built on are held in 1,040 mm x 1,0404 mm (41”x top of the transit center. 41”) metal frames with pins and wedges for faster raising and repositioning. “Now the tower crane can pick the boom and powerpack together so flying Feeding the booms from two pumping and remounting only takes a half-hour,”Josh stations are a Schwing BPL 4000 truck- notes. mounted pump or 32 m (105 ft) Schwing – both with 2023-5 pump kits. The placing booms 4-section Roll and Fold boom reaches 35 m (114 ft) hori- The 32 m (105 ft) is bypassing the zontally allowing more than 3,716 m² boom and pumping directly from the Rock (40,000 ft²) to be poured from one location. Valve outlet through a transition and into the pipeline. Two five-inch pipelines are an- For more information: chored horizontally and vertically to reach >>>Schwing America the eight boom locations. The pipelines are five- inch, heavy-duty, heat-treated, one-quarter-inch wall with two-bolt, heavy-duty five-inch clamps. Mix designs ranged from 8,000 psi for the verticals and 5,000 psi for the decks. The BPL 4000 and the S32X averaged 92 m³/h (120 yds./ hr) pumping at the maximum distance of 213 m (700 ft). More than 450 m (1,500 ft) of pipeline is being utilized on the project. Page 6 Contractors World - Formwork Supplement No 2 Estonia Tartu Bridge Is Big Challenge The bypass round the city of Tartu experts Doka, a company it has coop- is a large-scale infrastructure erated with over many years. The Doka project now under construction. engineers’ response to the challenge was In terms of formwork engineering, a first in the Baltic region. bridging the Emajõgi River is one The new-build Tartu Bridge will be 400 of the project’s biggest challenges. m long overall and 15.5 m wide. Most of It required detailed planning for the formworking can be done on com- the formwork so they truned to pacted riverbank subsoil with the load- the Austrian company Doka. bearing towers Staxo 100. he steadily increasing volume of The river itself cannot be dammed or traffic in and around Tartu, second even diverted however, so shoring over T largest city in Estonia, with a the full span is not an option.
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