1 / 40

Shaft Acceptance WSDOT’s Perspective

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

leigh
Download Presentation

Shaft Acceptance WSDOT’s Perspective

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Shaft Acceptance WSDOT’s Perspective Mohammad Sheikhizadeh HQ Construction

  2. Cross Sonic Log (CSL)

  3. Cross Sonic Log (CSL) Test

  4. CSL Sensor

  5. 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

  6. Further Investigation • The Contractor Proposes Additional • Exploratory Measures • The Engineer Approves or Suggests an • Alternate Proposal

  7. WSDOT Evaluation • Review Boring Logs • Geotechnical Engineer’s Input • Review Inspector’s Field Notes/Input • Review Mix design, Slump, Cylinder • Breaks • Structural Analysis/Acceptance

  8. Shaft Design

  9. Additional CSL Test

  10. Defect in the Middle

  11. 8’ Diam. Shaft With 4’ Hollow Core 8’ 6% Loss in Flexural Capacity

  12. Perimeter Defect

  13. Concrete Cover

  14. Defect at Top of Shaft

  15. Soft Bottom

  16. Tip Pressure Grouting Pressure Grout 2” diam. Core CSL Tubes May Be Used For Grouting

  17. Shaft Rebar Cage

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

More Related