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To transfer the horizontal forces of the weightbearing construction, legs from the GASS Aluminium Shoring System were used horizontally, providing safe and reliable support for the LOGO.3 formwork during the concreting work. of crossed horizontal and vertical joints. An open staircase – with angular corners on the outside and oval on the inside – with a concrete parapet was formed using a combination of the TTR formwork system for the internal core and LOGO.3 for the exterior. To take up the vertical loads, an support unit was constructed, formed and concreted in the second basement level. Car-lift shaft in two height operations A feature of this expensive residential structure is a car lift system to deliver cars from ground level to the basement. On completion of the slab over the first basement level, the first task was to create the internal walls of the lift shaft in reinforced concrete with a formwork height of 4.75 m, to allow these walls – as stipulated by the planner of the weight-bearing structure – to be used as an abutment supporting the single-sided formwork of the two external walls. To take up the horizontal forces, legs from the aluminium GASS shoring system were placed horizontally. The walls of the car lift shaft were created in operations undertaken at two heights. 1st height operation: To create the external walls in the second basement level to a formwork height of 5.65 m, LOGO.3 was secured as single-sided formwork with 6.00 m high supporting jacks. 2nd height operation: To make it possible to bring the shaft walls up to the level of the wall above the first basement level, there was an intermediate level created in the car lift shaft with system parts from the shoring system. The wall formwork was assembled and laid on this working platform and then lifted into vertical position by a crane. Indoor Swimming Pool The bottom of the swimming pool projects into the lower basement level, it was, therefore, formed using water-impermeable concrete after the external wall and the beam running through between these two boundaries had been completed. The bottom of the pool covers an area of 95 m² and was created using H20 beams from the Paschal deck system along with plywood panels from the contractors stock. Once the required degree of concrete strength had been achieved, the bottom of the pool was used as the supporting surface for the supporting jacks for the single-sided wall formwork. As forces of 160 kN were in play on each leg of the supporting jacks, additional props were placed under the floor of the pool. • Paschal Page 34 Contractors World International Vol 6 No 1
Super Mega Brace for its first major project Groundforce Shorco has used its new Super Mega Brace support system with integral hydraulic rams for the first time on a major project for the renewable energy sector. The equipment was supplied to main contractor, Clugston Construction, for use in the construction of a concrete energyfrom-waste fuel bunker situated on the Wilton International wasteto-energy site in Redcar, Teesside UK. Clugston, together with process partner, CNIM, is building the new plant which, when completed, will burn domestic waste supplied by Merseyside Waste as fuel to generate energy. The imported waste will be transported by train and stored in a huge concrete bunker prior to being burned to generate heat and power. Construction of this concrete bunker has required the excavation of a 13 m deep box structure below ground level. The completed bunker is 50 m long and 20 m wide. The walls of this bunker are lined with a series of contiguous concrete bored piles installed by specialist contractor, P J Edwards, with foundation design by engineer Byrne Looby. Supporting these piled walls at such a depth has required a very strong and rigid temporary propping solution supplied by Groundforce’s major projects division. Clugston’s chief engineer Ray Postolowsky said: “Until you’ve cast the reinforced concrete base slab, there’s a risk of the bottom of the piles ‘kicking in’ under the pressure of the ground behind them.” So to prevent this happening, Groundforce provided temporary propping at the base of the excavation and another level of support higher up to satisfy the high deflection and stiffness requirements calculated by Clugston’s consulting engineer, Tata Steel Projects. The upper level of the excavation is supported by two MP500 hydraulic props which are attached directly to the face of the concrete capping beam – a massive structure which is up to 5 m thick in places. The lower level was supported by three more MP500s which span across the width of the box, and four MP250 knee-braces, one spanning each corner of the rectangular excavation. All of the props in the lower level bear against Groundforce’s Super Mega Brace beams which transfer the loads from the contiguous concrete piled retaining wall. So the lower level props can be removed when the base slab has been cast and the high level props can be removed when a bunker dividing wall has been constructed. Strongest Brace in the Industry The Super Mega Brace is the strongest proprietary hydraulic brace in the industry. The modular hydraulic components are quick to assemble and lift into place. This project was designed by Tata Steel Projects and is one of the first fully Eurocode-compliant schemes that Groundforce’s Major Projects department has worked on. Stiffness was a key factor in the design and so, rather than keep the props under hydraulic pressure, Groundforce was required to lock them off mechanically to ensure rigidity in the frame. Specially-designed welded isolation plates were used to isolate the hydraulic element of the MP250 props, though not the larger MP500s. • Groundforce • Clugston Construction • P J Edwards Contractors World International Vol 6 No 1 Page 35
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Page 3 and 4: CONTENTS 5 Editorial Comment 6 Pano
Page 5 and 6: Published by VVV Limited Publisher
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 and 28: will be nearly doubled with the cre
Page 29 and 30: Doka Concremote - online measuremen
Page 31 and 32: The 20 m long bridge deck sections
Page 33: Germany Upmarket Residential Comple
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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