Ryot Covered Bridge
Ryot, PA United States | 2004
After 19 years of drawing in heavy salt air from the Pacific Ocean, the housings on the Trans-Koolau Tunnel are still reading in excess of 9 mil of zinc. When they were delivered, the readings were between 10-12 mils.
After 19 years of drawing in heavy salt air from the Pacific Ocean, the housings on the Trans-Koolau Tunnel are still reading in excess of 9 mil of zinc
The ventilation for the tunnels is accompleshed by a false, flast concrete ceiling which runs for the entire lenght of the tunnels. The area between each arch of hte tunnel and the false ceiling is separated into two sections by a concrete divider, with one compartment used for inhaling exhaust air and one compartment used for distributing fresh air. Large fans either draw or blow air into the spearated compartments.
The coating condition is in excellent condition. The Hawaii Department of Transportation is very impressed with how unbelievably sound the structure still is.
|Desc||Read. 1||Read. 2||Read. 3||Read. 4||Read. 5||Avg.|
|Inside below lip||8.90||8.40||8.50||8.80||8.90||8.70|
|Outside top cover||12.30||12.10||11.50||13.20||12.10||12.24|
|Bottom cover just above stencil||7.40||7.60||7.90||8.20||8.30||7.88|
|Man hole opening||4.80||4.90||5.60||4.30||5.40||5.00|
Water & Marine
Oahu, HI United States
Coating Durability, Corrosion Performance, Ease of Specifying, Prior HDG Experience
All major components of the fan housing
Babcock and Wilcox
V&S Columbus Galvanizing
New Haven, CT United States | 2012
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