Greenway Sculpture Facts

Sculpture Facts:

  • Over 100 miles of rope - between the soft net and the structual rope.
  • Over half a million knots make up the sculpture - 542,500 to be exact
  • 1 ton - approximate weight of the sculpture
  • In plan, the sculpture cover 20,250 feet or almost half an acre
  • The three voids recall the "Tri-mountain" which was razed in the 18th century to create lands from the harbor.  Boston was originally called Tri-Mountain by the first English settlers due to its topography.
  • The colored banding is a nod to the six traffic lanes that once overwhelmed the neighborhood, before the Big Dig buried them and enabled the space to be reclaimed for urban pedestrian life.

Sculpture Construction:

  • The sculpture is made by hand-splicing rope and knotting twine into an interconnected mesh of more than a half-million nodes.
  • The structural rope fibers are 15 times stronger than steel yet incredibly lightweight, making the sculpture able to lace directly into three skyscrapers as a soft counterpoint to hard-edged architecture.
  • Twine produced by Everson Cordage in Everson, Washington
  • Net panels fabricated and sculpture assembled by Diamond Nets in Everson, Washington.
  • The artwork is modeled in a software program developed in connection with Studio Echelman and Autodesk. A custom plug-in tool allows the studio to push the boundaries of their designs by more easily exploring net densities, shape, and scale, and simulating the effects of gravity and wind.
  • Artwork engineering and Lighting Design by Arup, Erected by Shawmut Design and Construction and Daniel Marr & Son Company.
  • The sculpture will include 4 strategically placed tension gauges to monitor and record the changing tension of the structural rope. Sculpture Installation
  • The sculpture will be/is attached at 4 points to 3 buildings:  the 28th floor of One International Place, between the 7th and 8th floors of 125 High Street and at 2 points on the 5th floor roof of the InterContinental Boston.

Sculpture Installation:

The equipment and number of people required on site for installation

  • 38 – 63 (aka about 50)
  • Four 90-ton cranes (3-4 people each)
  • One 50 ton crane (3-4 people)
  • One 115-ton crane (3-4 people)
  • 5-8 smaller pieces of equipment (including winches, grip hoists, misc. rigging gear) (2-3 people each)
  • Additional Project team (10-15)

Time needed for installation

  •         16-20 Hours (currently anticipated 3am – 9pm on May 3)

Lighting

     The sculpture will be lit with a total of 44 lumenpulse LED fixtures:

  • 2 fixtures each on twelve 17’ double acorn poles
  • 4 fixtures each on two 25’ pendant lights
  • 6 fixtures on the InterContinental
  • 6 Fixtures on 125 High Street

     The lighting program will consist of several custom-designed scenes

 

Bird and Wildlife Information

No bird or creature has ever been harmed from an Echelman work. The studio consulted with a bio-engineering firm that explained how the physical qualities of the artwork do not meet the criteria that would endanger birds. The nets are made of thicker rope with wider net openings than those used to entrap flying birds or other creatures. The structures themselves are not unlike naturally occurring vines and thickets often found in local forests and birds are well adapted to avoid these areas.

 

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