Accession Number:

ADA167236

Title:

Underwater Facilities Inspections and Assessments at Naval Air Station, Whidbey Island, Oak Harbor, Washington.

Descriptive Note:

Corporate Author:

CHILDS ENGINEERING CORP MEDFIELD MA

Personal Author(s):

Report Date:

1983-09-01

Pagination or Media Count:

70.0

Abstract:

Each facility was inspected by a team of EngineerDivers using primarily visual and tactile inspection techniques. Typical and critical conditions were photo-documented. The majority of the facilities exhibited some major structural damage. This damage is either the result of impact damage or marine borer attack. Repair of the damaged structural piles is of primary importance. The Fuel Pier is generally in good condition. No reduction of pier capacity is recommended. The major structural anomaly is the damage of two piles in the berthing dolphin associated with the pier. The Main Pier is in fair condition. Localized structural damage has reduced the piers live-load capacity. The Boat House is in fair condition. Marine borer attack has rendered several piles structurally deficient. The Runway Approach Lights and the Pumping Station Pier facilities are in good condition with no significant structural anomalies noted. The observed marine borer attack is a serious problem for the timber pile-supported structures. The presence of the borers indicates that the preservative treatment may have lost its effectiveness. Piles in the Fuel Pier, Main Pier and Boat House should be protected from further borer attack by wrapping the piles in protective plastic jackets.

Subject Categories:

  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE