| Home
> Recently Completed Projects >
Featured Project
Executive Summary
The Naval Facilities Engineering Service Center (NFESC) demonstrated
the design and construction for post strengthening of existing Navy
piers using advanced technologies. The strength upgrade incorporates
the placement of a few ounces/ft2 (gm/m2) of high strength material
in strategic locations versus massing hundreds of pounds (kgms)
of additional concrete and steel over the entire deck or replacing
the superstructure. The simplicity of the upgrade produces only
minimal interruptions in pier operations as opposed to closing the
pier for up to a year for traditional rehabilitation.
NFESC designed and detailed the upgrade that included concrete
repair and rehabilitation, an impressed current cathodic protection
(ICCP) system, and carbon/epoxy composite external reinforcement.
The construction contract was awarded based on best value and technical
qualifications to ACE Restoration of Fullerton, California. The
ICCP installation was subcontracted to CORPRO. Concrete repair materials
were provided by SIKA Corporation, carbon reinforcing rods were
supplied by DFI Composites, and carbon reinforcing laminate systems
were supplied by Master Builders Technologies.
NFESC proof-load tested the upgraded deck a month after the construction
was completed. A patch load of 130,000 pounds (580 kN) was applied
to the deck at critical locations without causing any new cracking
or inducing any distress in the structure. Measured strains in the
pier were within service range of all materials.
The upgraded area of Bravo 25 can be used for 50 and 70 ton (45
to 64 metric ton) mobile cranes with maximum outrigger loads up
to 125 kips (560kN) without restrictions to the placement of the
outriggers.
|
