CNR SLIDE Photo 6. - Alberta · CNR SLIDE Photo 6. Upslope ditch upstream of the CNR Trunk inlet....
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Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 6 of 11 Photo 5. Looking northwards from near km 59. Note the new cracking and dips in the pavement surface. CNR SLIDE Photo 6. Upslope ditch upstream of the CNR Trunk inlet. The inlet is clogged with debris and should be cleaned out.
Transcript of CNR SLIDE Photo 6. - Alberta · CNR SLIDE Photo 6. Upslope ditch upstream of the CNR Trunk inlet....
Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 6 of 11
Photo 5. Looking northwards from near km 59. Note the new cracking and dips in the pavement surface.
CNR SLIDE
Photo 6. Upslope ditch upstream of the CNR Trunk inlet. The inlet is clogged with debris and should be cleaned out.
Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 7 of 11
Photo 7. Crack in asphalt and noticeable dip in fence at the south end of the pile wall.
Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 8 of 11
Photo 8. Looking north along the pile wall south end. There is fresh cracking behind the pile wall at the SE (uphill) end, and a new crack extending back from the wall near the rail crossing. There is also some loss of material behind the wall near the rail crossing.
Photo 9. Spalling of the parging between the piles has worsened since 2010 with several sections having fallen out with an associated small amount of soil loss where the parging has spalled.
Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 9 of 11
Photo 10. No apparent change in the downhill portion of the pile wall. As noted in Photo 7, there is a fresh crack extending back from this portion of the wall and some additional loss of material behind the wall.
Photo 11. Tension cracks are visible at surface indicating continued slide movement below the pile wall.
Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 10 of 11
Photo 12. The Heart River still flows on west side of rip rap berm on the west side of the valley floor.
Photo 13. Looking upstream along the toe of the CNR slide. Note the active erosion along the toe of the slide. Rock is exposed along the river bank with more slabs of sandstone and clay shale bedrock toppling into the river bed than observed in 2010.
Client: Alberta Transportation Date: December 12, 2011 File No.: 15-16-264 E File: \\H\15\16-264 PH33 - Edm Page 11 of 11
Photo 14. Backscarp of the CNR slide. Two inclinometers, installed in 2010, upslope of the backscarp, are visible near the center of photo.
