Terminal 18 Dock Rehabilitation
Briefing 
Item #: 7a_Supp 
Date: March 11, 2014 
Commission Memo 




1

E.


7,7"        g;  .n.'


.    pokane Street Viduct

-*.   ,.,      '-'..


f';
~W. Marginal Way,  V
v \
q. .153


2

Anatomy of a Container Terminal

Inspections & Data 
Field Observations 
Cracks 
Longitudinal 
Shear 
Shrinkage 
Delamination 
Spalling 
DEF 


4

DEF in Concrete Piles 
Concrete 
Steel reinforcing
bars 
Typical concrete
cracking 
DEF expansion
and cracking 
DEF is Delayed Ettringite Formation. Ettringite crystals form
some number of years after the concrete is cast. They break up
the concrete as they grow and significantly decrease the
concrete's structural integrity. 
Pile repair or replacement is necessary. 
5

Damaged Pile examples 



6

Deteriorated Pile Cap examples 



7

Pile Cap Aging 
Apron
Deck 
Pile Cap                      Uncracked pile cap 
Minor cracking begins 
Water enters, corrosive
concrete starts forming 
Cracks grow, concrete is
corrosive, reinforcing
corrodes, and concrete
spalls. 
Pile 

8

Pile Cap Repair Pictures 



9

Seaport Facilities Comparison 
Relative Structural Condition* by Facility



T18      T46      T30      P66      T25      P90     T115      T5      P91 
Facility 
*Condition metric combines percentage of distressed areas and severity of distress (does not
include DEF results) 

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T-18 Dock Rehabilitation areas 



Pile Cap Rehabilitation location 
Pile DEF Rehabilitation location 
Rehabilitation to be done later 
11

Terminal 18 Work Areas for
Pile Cap and Piling Rehabilitation

Pile Cap Rehabilitation   Pile DEF Rehabilitation
__________E_______m___.llw_L__________________________SA Berth 4                SSA Berth 3                  SSA Berth 2                       SSA Berth 1
1, 00ftgm1          1,100 ft         1,100 ft            1, 100 ft




.


"






'
ITrinsverse Crackinwt)
3235   9887 0505  Ilongiludinal mean. Repair (cu m
lDelaminalion/Spalling Repair (cu m
w
Isaamn; am.- ktch (cu' m

IDevelowmem Unit

F














_

- IIIIIIIII-IIIIIIIIIIIIIIIHMIHM 
211                                                                                                                     _u______________________m_
050
Bent Number


12 12

Future Dock Rehabilitation 
Funding Request 
Planned Rehabilitation Program 
Terminal 18 -  $ 18m     2014-2016 
Terminal 46 -  $ 22m      2015-2018 
Terminal 5 -   $ 8m     2016- 2018 
Terminal 25/30 - $12m     2018- 2021 
Staff will request $715,000 for T18 design funds
next week 

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T-18 Dock Rehabilitation Briefing 

Questions? 


14