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Transportation & Aviation

Nashville Avenue Terminal Complex, New Orleans

Photo courtesy of AeroPhoto Inc., St. Petersburg, Fla.
Photo courtesy of AeroPhoto Inc., St. Petersburg, Fla.

The third and final phase of an extensive reroofing project on the Nashville Avenue Terminal Complex at the Port of New Orleans was completed in 2017. The three-phase project began in the 1990s and spanned two decades. The 853,200-square-foot facility is 2,640 feet long and 330 feet wide, and its footprint runs slightly northwest/southeast on the Mississippi River.

The terminal building is bisected with a firewall. The roof is divided into five sections, with two sections to the northwest of the firewall and three sections to the southeast of it. In the first phase of the project, the 198,000-square-foot roof section at the furthest southeast end was replaced in 1998.

During phase 2, Ray Brothers Inc. replaced two built-up roof membrane (tar and gravel roof) sections on either side of the firewall with 237,600 square feet of its MT-240 standing seam roof system in unfinished 22-gauge Galvalume; it was completed in August 2014.

In phase 3, the remaining two built-up roof sections at the furthest northwest end and in between the southwest end and middle sections were replaced with metal roofing. Construction was completed between August 2016 and May 2017. The wharf remained operational throughout the project, which necessitated close coordination among construction crews.

To prepare the existing built-up roof for phases 2 and 3, RK Hydro-Vac Inc. vacuumed roof ballast off a 655,000-square-foot area. Gulf Coast Service Group completed demolition of the existing built-up roof and installed structural steel components to existing roof trusses, purlins and columns. It also removed tongue-and-groove decking and wood nailers that were bolted to existing purlins.

For the new roof in phase 3, Ray Brothers installed 417,600 square feet of its MT-240 standing seam roof system in unfinished 22-gauge Galvalume. It roll formed the 18-inch-wide, 180-foot-long panels on the job site and installed them with continuous clips and batten caps. Sealant under the batten caps was supplied by Hot Melt Technologies Inc.

For daylighting, during phases 2 and 3, Glendale Enterprises Inc. installed 66 of Kingspan Light + Air LLC’s (formerly CPI Daylighting) 132-foot-long by 4-foot-wide skylights. To fit the skylights in the roof, Ray Brothers fabricated and installed approximately 33,550 square feet of 14-gauge galvanized steel structural roof curbs and flashing. The company also installed custom stainless steel crickets with soldered joints.

Also during phases 2 and 3, Ray Brothers fabricated and installed stainless steel square-to-round transitions for the components to tie into existing downspout boots. Ray Brothers installed 6,900 feet of its 16-gauge, 12-inch-tall by 12-inch-wide stainless steel gutters in a natural finish with structural stainless steel gutter brackets and hangers mounted to the building structure. The gutters’ expansion joints are spaced with 60-foot centers and have welded joints approximately 6,800 feet long.

Inside the terminal, Ray Brothers removed and replaced smoke ventilation panels and installed 16-gauge galvanized steel sub-framing for new panels. Ray Brothers replaced the existing panels, which were mounted to ridge trusses and gable trusses, with 50,000 square feet of its corrugated metal smoke ventilation panels.

S&S Sprinkler Co. LLC completed sprinkler system modifications and installed its system during phase 3 of the project. The company removed existing hangers that were mounted to wood blocking, mounted hangers to structural steel framing and installed pipe hangers and hardware to the existing sprinkler system. Additionally, S&S Sprinkler rerouted some water lines; they were un-mounted from wood blocking and remounted to steel framing.