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Shaft Acceptance WSDOT’s Perspective

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Shaft Acceptance WSDOT’s Perspective. Mohammad Sheikhizadeh HQ Construction. Cross Sonic Log (CSL). Cross Sonic Log (CSL) Test. CSL Sensor. Types of Anomalies. Anomalies in the Perimeter of Shaft No Concrete Cover Anomalies in the Center of Shaft Soft Bottom

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Presentation Transcript
slide1
Shaft Acceptance

WSDOT’s Perspective

Mohammad Sheikhizadeh

HQ Construction

slide7
Types of Anomalies
  • Anomalies in the Perimeter of Shaft
  • No Concrete Cover
  • Anomalies in the Center of Shaft
  • Soft Bottom
  • Poor Concrete in The Top of Shaft
further investigation
Further Investigation
  • The Contractor Proposes Additional
  • Exploratory Measures
  • The Engineer Approves or Suggests an
  • Alternate Proposal
wsdot evaluation
WSDOT Evaluation
  • Review Boring Logs
  • Geotechnical Engineer’s Input
  • Review Inspector’s Field Notes/Input
  • Review Mix design, Slump, Cylinder
  • Breaks
  • Structural Analysis/Acceptance
slide17
8’ Diam. Shaft With 4’ Hollow Core

8’

6% Loss in Flexural Capacity

slide35
Tip Pressure Grouting

Pressure Grout

2” diam. Core

CSL Tubes May Be Used

For Grouting

slide40
Concluding Remarks
  • CSL Tests & Results Are Accurate &
  • Dependable Provided:
  • Tests Performed by Skilled Testers
  • Correct Interpretations Are Made
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