To watch an animation of the assembly and erection of this structure, click here.

To see more images of the assembly and erection of this structure. Click here.

This barrel vault shaped structure is a canopy for the entrance to the V.C. Bird International Airport located on the island of Antigua, five miles northeast of St. John's, the capital of Antigua and Barbuda. The Triodetic system was used for this spatial structure.

The construction cost was about $47.50 per square feet with a total budget of $245,000. Ten workers assembled and completed the construction of the spatial structure in approximately nine days. The Cantilever Method, in which the structure was assembled piece-by-piece in place using scaffoldings, was used.

The structure has a square-on-square offset double-layer grid configuration with a total upper layer plan dimensions of 428'-4" by 32'-11", measured from the edges of the metal roofing. The module sizes are 60" by 60" with a structural depth of 31". All the members of this spatial structure are made of 2" diameter round steel tubes.

A metal roofing is used on the upper layer of the structure. The structure is supported at the top layer by forty-four 8.625" diameter steel tube columns placed at every 20 feet (4 modules) in the longitudinal direction and having a span of 13'-2"with a 15' cantilever in the transverse direction. The column heights are 16'-2" and 12'-0".