Archive for Government

Florida Bridge Cathodic Protection Projects (2013 – 2016)

Between 2013 and 2016 Existing Structures Engineering (ESE) provided Cathodic Protection Specialist and Testing services on fifteen (15) different FDOT Bridge rehabilitation projects across the state of Florida. Testing services provided included reinforcing steel continuity on bridge bent cap repair; adhesion, continuity to steel reinforcing and thickness measurements for zinc metalizing of steel and concrete surfaces; installation of structural and non-structural galvanic pile jackets; and commissioning of ICCP (Impressed Current Cathodic Protection) systems on bridge support structures.

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Freshwater Corrosion – South Florida Water Management District (2015)

Although the coastal environment is known to be very corrosive, it should come as no surprise that “fresh water” structures can also need significant maintenance to stay serviceable. Because fireworks fallout and fertilizers, some of the theme park water we have tested is nearly as corrosive as seawater. But these flood control structures that we evaluated the service bridges on are as “out in the middle of nowhere” as you can get. But natural tannins, fertilizer and age still take their toll.  These flood control structures are being refurbished and we confirmed that the service bridges are structurally suitable for light construction traffic (but never crane load a hatch or trench cover!).

Antenna Support Rack (2012-2013)

ESE was commissioned to design two roof-mounted racks to support antennas weighing approximately 4000 Pounds each. The roof-mounted racks were to be attached to the roof framing atop a building located on Cape Canaveral’s Air Force Station. ESE had to first confirm the as-built drawings of the roof plan. Next, the conceptual design was roughly detailed and submitted. Once this preliminary design was approved by the client, the detailed design was modeled using STAAD.Pro to perform a structural analysis. An AISC code check was executed on all steel elements. A stress analysis indicated that all stresses were within allowable and the structure passed on code and statics checks. ESE provided ongoing support during fabrication and installation of the antenna racks.

JEA – Concrete Restoration of Unit #2 Cooling Tower (2005-2006)

JEA Cooling Tower (Jacksonville Electric Authority)Jacksonville Electric Authority/Florida Power & Light Company operates two coal fired 640 MW power plants at the St. Johns River Power Plant in Jacksonville, Florida. Corrosion related damage to Unit #2 Natural Draft Cooling Tower had progressed to the point where structural integrity and safety was a concern. The tower was built in 1985 (at a cost of over $50 million) and is 450 feet high and 320 feet in diameter. Existing Structures Engineering, Inc. (ESE) was hired to perform an engineering condition survey coupled with recommendations, and repair/remediation design. The scope of the project ultimately grew to include construction engineering and inspection.     Read More