2015 crw - fagioli rigging job of the year

SC&RA 2015RIGGING JOB BETWEEN $150,000 AND $750,000

ISOZAKI TOWER - MILAN

THE ISOZAKI TOWER - MILAN

The Isozaki Tower, at 207M high, is Italy’s tallest building. There are 50 floors, 46 of which are to be used as office space. The building can accommodate up to 3,800 people, over a total floor space of about 53,000 m2.


The Isozaki Tower represents the future business and shopping district of City Life in Milan.

The skyscraper, comprised of a modular system that can in theory repeat indefinitely, has six office floors in each of the eight modules clad with a double-glazed glass skin. The vertical continuation of the modules, slightly convex, has been designed to create the concept of a “tower without end”: a slender, “light”, vertical building.

In order to emphasize this “vertical” movement perception the building is provided with 14 elevators at the side of it!


The tower, with its fast elevators (40 seconds to cover 200m and get to the top of the building) is an homage to FUTURISM (Futurismo), an artistic and social movement that originated in Italy in the early 20th century.

This movement emphasized speed, technology, youth, and objects such as the car, the airplane and the industrial city.


Four slanted sections called “struts” help to support the tower along the two main facades (reducing the bulk of the load-bearing structures in the internal space) and act as one of the bracing systems. The function of the struts is to increase the damping of the oscillations and reduce the bending moment at the base of the tower.

Fagioli was contracted to install the 4 sections which have both a structural and esthetical value (adding vertical and movable perceptions to the tower and emphasizing the futuristic concept of a “building-machine”).


The project has obtained the LEED Gold Pre-certification, meeting the environmental sustainability requirements provided for by the LEED international standards.


ENGINEERING AND PLANNING

Engineering and Planning

Each of the (4) strut sections was composed of an upper and a lower portion.

STRUCTURE USED TO TILT THE STRUT

the weight of each strut varied from 74-110 ton, 60m in length and about 3m diameter.


A delay in the construction of the four sections forced the client to search for a different solution to quickly and safely install the sections.

Main Challenges: -height of the strut above the pedestal-necessary outreach to incline the struts-surrounding construction restraints-no room to use cranes of suitable capacity


2 FAGIOLI TOWERS 78 METERS HIGH USED TO INSTALL P3 AND P4 SECTIONS

2 FAGIOLI TOWERS 54 METERS HIGH TO INSTALL P1 AND P2 SECTIONS. THE TOWERS WERE POSITIONED AT 21 M Level

LIFTING TOWERS

Engineering and PlanningStrand Jacks 4 x L180 Strand Jacks 6 X L100 Strand Jacks 8 x L50 Strand jacks

rollers anchor guy system


Fagioli proposed its modular tower system to perform the installation of the sections and strand jacks to incline them. -assembled directly on the pedestal with minimal modification to accept tiedowns-removal of bracings allowed the insertion of struts for their assembly-strand jacks would guide the strut into position with only the addition of a pivoting connection at base of the strut


The most challenging aspects of the operation were :-handling of the struts differently than client originally planned -Fagioli performed structural engineering studies of the struts to demonstrate the feasibility of the operation-maintaining stability of the struts and the lifting towers during the operation


Fagioli operations were performed between September and December of 2014. A dedicated engineering team designed the system and issued the operational procedures.

engineering hours: 500

SAFETY


Working at height (80m above ground) required detail planning and step-by-step procedures. A dedicated HSE manager held daily tool box meetings and close supervision was key to the safe execution of the work. External scaffolding was erected outside of each tower since the internal ladders and platforms had to be removed for the work. Strand jack system operated from the ground.100% safety harness used for working at height. tower cranes were used as a contigency for help.

Safety


INNOVATION & INGENUITY

First Operation: Placing The Strut On The Pedestal

Fagioli had the idea to use the towers to lift the two halves of the strut. The upper portion of the strut was lifted by strand jacks. After removal of the top tower leg bracings, rollers under the strand jack support structure were used to shift the strut inside the lifting tower.


The lower portion of the strut was then lowered by the strand jack inside the tower and connected onto a pivot base structure onto the concrete pedestal (prepared for the first 2 sections) at 21 meters high.


The upper portion of the strut was then lifted and inserted into the tower and connected to the lower portion to complete the strut.

Second Operation: Inclining Strut To Final Position

Fagioli first installed an anchor guy system. The tower system was then partially dismantled and 2 x l180 + 2 x l100 strand jacks were positioned at ground level. Also, guy anchor points were installed onto the top part of the section. The strut could be maneuvered into position by controlling the strand jacks at the base.

Job Statistics – Isozaki Tower (Milan):

4 Fagioli operators2 supervisors 1 HSE manager

For a duration of about 4 months (over 2,500 hours worked)

No accidents or incidents occurred during the project.

Chris Layne

Fagioli, Inc.21310 Hwy 6Manvel, TX

Thank you !

2015 crw - fagioli rigging job of the year

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