DLT were sub-contracted to design, supply and operate a skidding and jacking system to incrementally erect the 26m x 22m x 140m high 2800 tonne jacket structure. The jacket was erected in 8 sections, weighing up to 660 tonnes each, using the DL-TS3000 Mk1 jacking tower system (see below)
The DL-TS3000 Mk1 jacking tower system is owned and operated by DLT and can lift vessels up to 3000 tones and 150m high. It is able to self erect and dismantle and with the optional DL-TF1500 is able to operate without a tailing crane. It can operate unguyed up to 70m high in storm wind of up to 40 m/sec. All components are transported in standard shipping containers for economic relocation between sites.
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With a main span of 1088m the Sutong Cable stayed bridge is the longest span cable stayed bridge in the world. DLTwere sub-contractors to 2nd Navigation Engineering Bureau for the design, supplyand operation of the eight deck erection gantries that were used to erect the 84 No steel orthotropic deck segments, each weighing up to 450 tonnes, between 9th November 2006 and 9th June 2007. More>
DLT were sub-contracted to assist in the installation of a FSO mooring line system 32Km offshore in the Corocoro Oil Field, Venezuela. DLT designed and supplied the strand jack tensioning system to pull pairs of mooring lines toward one another causing their anchors to plough into the sea bed and subsequently test load the mooring lines to a 700te tension. More>
DLT were employed by Odebrecht to supply equipment and site supervision to install a water distribution pipe. The maximum pull was 132 tonnes, and the longest pull 157m. More>
DLT were sub-contractors for installation of a new 40.75m high 3115 tonne furnace line in Taiwan. Our scope included full engineering of all temporary works required together with supply of jacking equipment and site labour to carry out the work. The blast furnace was delivered to the site in 8 segments, weighing up to 477 tonnes each, which were lifted and skidded into the furnace house before being jacked vertically and aligned for welding. These operations were carried out using a mix of strand jacks and climbing jacks. More>
DLT were the sub-contractors for the erection of the three steel deck units forming the main 108m span of this multi-span box girder bridge. Two 2.5m long concrete / steel transition pieces, each weighing 100 tonnes, were erected first. This was followed by the erection of the main 103m long steel centre section weighing 1325te. The three lifts took place in May 2006. More>
DLT werey sub-contractors for design, supply and operation of strand jack and climbing jack systems for vertical lifting and horizontal skidding operations required to replace the existing railway over bridges with a new six lane composite bridge. DLT are also responsible for conceptual and detailed design of all construction methods, all of which take place within limited railway possessions. More>
DLT were sub-contractors for the lowering by strand jacks of a 3050 tonne steel caisson to pier 4, from its assembly position above water level to its final submerged position. The operation was carried out in October 2004 using 16 No DL-S418 strand jacks controlled and synchronised by a single operator using a DL-P40 computer control unit. With a 1088m main span, the Sutong bridge will be the largest cable stay bridge in the world when completed. More>
Carquinez
suspension bridge, California
DLT were sub-contractors for erection of the 24 No. 700 tonne steel deck units, which was carried out in 2003 using a system of computer controlled strand jacks. The deck units were delivered directly to the bridge site by ship and lifted into final position using 4 No 290 tonne capacity strand jacks mounted on the deck units. DLT were also responsible for detailed construction engineering of the main cables, deck hangers and steel orthotropic deck. More>
DLT were sub-contractors for erection of the 24 No. 700 tonne steel deck units, which was carried out in 2003 using a system of computer controlled strand jacks. The deck units were delivered directly to the bridge site by ship and lifted into final position using 4 No 290 tonne capacity strand jacks mounted on the deck units. DLT were also responsible for detailed construction engineering of the main cables, deck hangers and steel orthotropic deck. More>
A2/M2
Medway Bridge, Kent, UK
DLT were sub-contractors for the design, supply and operation of a 800 tonne capacity climbing jack system for the lifting and lowering of temporary formwork support trusses for the construction of 80m long in-situ post tensioned concrete approach spans. Climbing jacks provided many benefits to this operation compared with other types of jacking equipment.More>
DLT were sub-contractors for the design, supply and operation of a 800 tonne capacity climbing jack system for the lifting and lowering of temporary formwork support trusses for the construction of 80m long in-situ post tensioned concrete approach spans. Climbing jacks provided many benefits to this operation compared with other types of jacking equipment.More>
Formosa
Plastics Plant, Taiwan
DLT are sub-contractors for the design, supply & operation of a 100m high modular jacking tower system for the erection of over 50 petrochemical vessels since 1997 ranging from 1120 tonne at 30m high through to 1550 tonne at 115 m high. We are also responsible for engineering all of these operations. More>
DLT are sub-contractors for the design, supply & operation of a 100m high modular jacking tower system for the erection of over 50 petrochemical vessels since 1997 ranging from 1120 tonne at 30m high through to 1550 tonne at 115 m high. We are also responsible for engineering all of these operations. More>
Heat
exchanger replacement, Indonesia
DLT were sub-contractors for the design, supply and operation of a 60 tonne capacity gantry to replace 2 No 60 tonne heat exchangers from deep within a steel framed structure on PT Peni’s site in Indonesia. Use of these purpose designed gantries in place of conventional cranage avoided the need to extensively dismantle the steel structure to gain access to the vessels, saving time and money.
DLT were sub-contractors for the design, supply and operation of a 60 tonne capacity gantry to replace 2 No 60 tonne heat exchangers from deep within a steel framed structure on PT Peni’s site in Indonesia. Use of these purpose designed gantries in place of conventional cranage avoided the need to extensively dismantle the steel structure to gain access to the vessels, saving time and money.
HAECO
hanger roof lift, Hong Kong
DLT were sub-contractors for the design, supply and operation of a strand jack lifting system to erect two pre-assembled roof sections, each weighing over 1000 tonnes. More>
DLT were sub-contractors for the design, supply and operation of a strand jack lifting system to erect two pre-assembled roof sections, each weighing over 1000 tonnes. More>