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Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES
37

Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

Dec 14, 2015

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Page 1: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

Dan Gorley, P.E.

IDAHO TRANSPORTATION DEPARTMENT

REMOTE PBES

Page 2: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.
Page 3: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.
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• USE PBES TO GET IN AND OUT QUICKLY

• USE PBES TO LESSEN THE AMOUNT OF WORK NEEDED ON SITE

• USE PBES TO REDUCE ENVIRONMENTAL RISKS ON SITE

• USE PBES TO FACILITATE MAINTAINING ACCESABILITY

PROJECT GOALS

Page 7: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.
Page 8: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

Finally something is happening on site! This project might actually get built.

Page 9: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

Great! Look who showed up on site. This guy’s wife was noticed spawning 75’ up stream. Job was shut down immediately per Fish and Games request. The evaluation process took 2+ weeks until environmental agencies were satisfied that eggs would not be harmed.

Page 10: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.
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This steel plate appears to be a great idea for getting all the mechanical splices for the wing walls perfect.

Page 12: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.
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Not such a great idea anymore. Even if they had used a bond breaker behind the steel this would be difficult to remove.

This was not repeated on the second abutment. They used plywood for the next template.

Page 16: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

• INITIALLY WANTED TO DO 1 CONRETE

POUR

• PLACE ABUTMENTS

• ATTACH WING WALLS

• SET GIRDERS

• POUR CONCRETE

Page 17: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

• DECIDED THAT 2 CONCRETE POURS WOULD BE EASIER TO CONSTRUCT

• PLACE ABUTMENTS

• POUR CONCRETE CLOSURES AROUND PILES IN

ABUTMENT

• ATTACH WING WALLS

• SET GIRDERS

• POUR CONCRETE DIAPHGRAMS AND WING WALL

CLOSURES

Page 18: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

Even with predrilling it’s not easy. These 10” piles need to fit in a 24” CMP.

Page 19: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.
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Did not meet the tolerances on 2 of the piles.

Ouch! Why so much!

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Mom! I was just calling to

say I love you….

Page 29: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

PROGRESS!!

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Page 35: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

LESSONS LEARNED

• PBES DID LOWER THE ENVIRONMENTAL RISK ON SITE

• DO NOT USE STEEL PLATE FOR REBAR TEMPLATES WHEN PRE-CASTING

• WHEN TAPERED INSERTS ARE ALLOWED THEY SHOULD BE PROTECTED

• IT’S NOT EASY TO CHANGE CURRENT INDUSTRY PRACTICE

Page 36: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

LESSONS LEARNED (cont.)

• PBES REDUCES THE POTENTIAL FOR MISTAKES IN THE FIELD AND REQUIRES CONCRETE PLANT CERTIFICATION—CONTRACTORS IN THE FIELD DO NOT REQUIRE CERTIFICATION

• PILE DRIVING MAY BE A FOCUS AREA WITH PBES ESPECIALLY WHERE DIFFICULT PILE DRIVING IS EXPECTED

• MORE DETAIL IN CONSTRUCTION SPECIFICATIONS MAY BE NECESSARY TO CONTROL ITEMS SUCH AS WHEN BACK FILL OPERATIONS SHOULD OCCUR

Page 37: Dan Gorley, P.E. IDAHO TRANSPORTATION DEPARTMENT REMOTE PBES.

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