Bridge over the Ombrone River

Erection design of a cycle-pedestrian on the river Ombrone.

Category: Erections
Services: Final Design
Period: June 2014 – October 2014
Client: Bit S.p.a.
Amount: 1.399.601,87 € (Categories IXb, IXc, VIa)

The final design of a steel arched cycle-pedestrian walkway. The deck is made with two lateral beams, supported by the tubular arches by means of a suspension system, with hangers converging towards the center.

The final design of a steel arched cycle-pedestrian walkway. The deck is made with two lateral beams, supported by the tubular arches by means of a suspension system, with hangers converging towards the center.

The main deck beams, made with a C-shaped cross section composed of bent metal sheets by welding, are connected with metal crosspieces in a double T section of variable height, tapered at the connection to the chain beam and arranged at the pitch of the hangers, i.e. every 2 m.

The main deck beams, made with a C-shaped cross section composed of bent metal sheets by welding, are connected with metal crosspieces in a double T section of variable height, tapered at the connection to the chain beam and arranged at the pitch of the hangers, i.e. every 2 m.

The hangers are made with full locked coil ropes with a theoretical diameter of 20 mm connected to the deck with an adjustable fork terminal and to the arch with a fixed fork terminal.

The hangers are made with full locked coil ropes with a theoretical diameter of 20 mm connected to the deck with an adjustable fork terminal and to the arch with a fixed fork terminal.

The decking is made with a 12 cm thick corrugated sheet slab resisting in the longitudinal direction between two transverse beams.

The decking is made with a 12 cm thick corrugated sheet slab resisting in the longitudinal direction between two transverse beams.

The main geometric features of the work are:
• Walkway span approx.72 m
• Height of the arches about 15.00 m
• Effective deck width m 3.50

The main geometric features of the work are:
• Walkway span approx.72 m
• Height of the arches about 15.00 m
• Effective deck width m 3.50

17 March 2021

Bonneville Viaduct Mont Blanc Motorway

Erection design.

Category: Erections
Services: Final Design
Period: October 2018– November 2019
Client: BIT spa – Mont Blanc Motorway and Tunnel Company

The deck was divided into coupled beams (BiPoutres), pre-assembled in the workshop, which were then transported to an area close to the final site, assembled and placed in geometry on temporary supports. By means of trolleys, the BiPoutres were moved to the foot of the work, to then be lifted and positioned in their final configuration by cranes. Particular attention was paid to checking the stability during the lifting, laying and casting of the deck.

The deck was divided into coupled beams (BiPoutres), pre-assembled in the workshop, which were then transported to an area close to the final site, assembled and placed in geometry on temporary supports. By means of trolleys, the BiPoutres were moved to the foot of the work, to then be lifted and positioned in their final configuration by cranes. Particular attention was paid to checking the stability during the lifting, laying and casting of the deck.

To ensure the rotations of the deck during the casting phase, it was necessary to provide provisional supports to be replaced when the casting is hardened with the definitive supports. Interference with the highway has been reduced to a minimum: the assembly operations were completed in just two nighttime interruptions granted by the highway manager.

To ensure the rotations of the deck during the casting phase, it was necessary to provide provisional supports to be replaced when the casting is hardened with the definitive supports. Interference with the highway has been reduced to a minimum: the assembly operations were completed in just two nighttime interruptions granted by the highway manager.

17 March 2021

Cité Musicale

Assembly of the metal structures for the roof of the auditorium

Category: Erections
Services: Final Design
Period: January 2015 – July 2015
Client: Cordioli S.p.a. Bouygues Batiment
Value: approximately €1,200,000.00 ( Category IXb )

Final design of the assembly of the metal structures of the auditorium roof, including the study of the effects of the assembly sequence on the assembly structures and the study of the assembly equipment with particular attention to the temporary piers to be used to support the trussed beams, the transverse temporary retainers and longitudinal elements and the elements for distributing the loads at the base of the temporary towers.

Final design of the assembly of the metal structures of the auditorium roof, including the study of the effects of the assembly sequence on the assembly structures and the study of the assembly equipment with particular attention to the temporary piers to be used to support the trussed beams, the transverse temporary retainers and longitudinal elements and the elements for distributing the loads at the base of the temporary towers.

Study of the storage and assembly and lifting sequence of elementary segments of lattice beams.

Study of the storage and assembly and lifting sequence of elementary segments of lattice beams.

17 March 2021

Bologna exhibitions – New Pavilion 37

Erection design of the fixed and moving part of the cover.

Category: Erections
Services: Final Design
Period: November 2019 – May 2020
Client: Cimolai s.p.a.

The roof of Pavilion 37 has plan dimensions of 80.8 m x 184 m and height of 23m and is entirely made with spatial lattices in metal carpentry.

The roof of Pavilion 37 has plan dimensions of 80.8 m x 184 m and height of 23m and is entirely made with spatial lattices in metal carpentry.

The fixed roof is made up transversely of main trusses, trusses with variable height from 2.8 m to 7 m span 72.8 m at a center distance of 36 m, by longitudinal secondary trusses.

The fixed roof is made up transversely of main trusses, trusses with variable height from 2.8 m to 7 m span 72.8 m at a center distance of 36 m, by longitudinal secondary trusses.

The mobile roof covers the central portion and consists of two spatial trussed structures with plan dimensions of 18×180 m which slide on the fixed roof by means of roller conveyors resting on runways fixed on the main trusses. First, the main trusses were assembled near the final site and raised by tandem lift, and then the secondary trusses.

The mobile roof covers the central portion and consists of two spatial trussed structures with plan dimensions of 18×180 m which slide on the fixed roof by means of roller conveyors resting on runways fixed on the main trusses. First, the main trusses were assembled near the final site and raised by tandem lift, and then the secondary trusses.

Once the fixed cover was completed, the semi-mobile cover, divided into 5 segments, was lifted by crane and moved to its final position by means of a strand jack using final rollers and rails. To restore the congruence of the mobile cover, appropriate constraints were applied by means of jacks on supporting alignments.

Once the fixed cover was completed, the semi-mobile cover, divided into 5 segments, was lifted by crane and moved to its final position by means of a strand jack using final rollers and rails. To restore the congruence of the mobile cover, appropriate constraints were applied by means of jacks on supporting alignments.

17 March 2021