highway #1, slide 5 area, catch fence and berm repair lki ... · highway #1, slide 5 area, catch...

File: 4502_Slide_5_Berm_Repair_Photos_Proposed_Work_Oct_15_2015.pptx

October 15, 2015

Photos #1: Overall view of site showing proposed workRef# 11139 SCP April 22, 2015

Ministry of Transportation and Infrastructure, Rockwork Engineering File: 33300-30/4502.10Photographs Showing Proposed Work, Project No. 86002-4502

of 19Highway #1, Slide 5 Area, Catch Fence and Berm RepairRFI Landmark No.: 1865264, RFI Landmark Name: Hell's Gate Tunnel West Side, RFI Offset: 0.939 to 1.081 kmLKI Segment: 0905, LKI Segment Name: Hope to Lytton, LKI km: 53.4 to 53.6

Repair north fence (2009)

Repair catch fence (2013) on berm

Repair south portion of berm

Repair and adjust rubber tire mats on back of bermRemove large rock embedded in back of berm

P1

P7

0.9391.081

Replace and weld broken hanging plate at steel cap #1

Reconstruct rock armour at back of berm

Replace two braking elements for upper bearing rope

Weld two additional hanging plates on each steel cap #1 to 20

Steel cap #1

Remove existing 7.6 m long and 1.0 m thick gabion wall (2013) and construct new 24.6 m long gabion wall to south end of berm

Steel cap #20

Install rubber tire mats Types 5, 6, 7 and 8

Embankment berm (2008)

Install steel berm edge protectors

0.9490.961

Braking elements

Braking elements

Photos #2: Overall view showing proposed workRef# 11324 SCP October 25, 2015



Ferrabee Wall (1961)

Repair rubber tire matReplace broken hanging plate on cap #1

Weld two additional hanging plates on each of 20 caps

Fasten rubber tire mats to each new hanging plate


October 15, 2015

Remove two mats Type 2 Install two mats Type 2 on caps between posts 2 and 3

Replace broken hanging plate on cap 1Total 41 extra hanging plates to be welded

Install steel mat plates under proposed new gabion wall

Reconstruct existing 7.6 m long gabion wall on berm

Remove existing 7.6 m long and 1.0 m thick gabion wall (2013) and construct new 24.6 m long gabion wall to south end of berm

Mat weight = 50 lb/ft2

Remove mats Type 1 as necessary

Photo #3: Overall view of site showing proposed workRef# 11247 SCP May 1, 2015

Ferrabee Wall (1961)


Rock fall site of February 11, 2015

Repair catch fence (2013) on berm

P1

P7

0.939

1.081

Repair south portion of berm (2008)

Repair and adjust rubber tire mats



Catchment cleanout complete

Additional 500 m3 debris accumulated in catchment about October 10, 2015 (not shown)

Remove large rock embedded in berm


October 15, 2015

Remove existing gabion wall (2013) and construct new gabion wall to south end of berm

Photo #4: View showing proposed workRef# 11139 SCP April 22, 2015

0.939

Repair south portion of berm (2008)



Remove boulders

Armour to top of concrete wall using > 1.5 m size boulders

Catchment cleanout in progress

Boulder armour to protect concrete Ferrabee wall



October 15, 2015

Remove existing gabion wall (2013) and replace with new gabion wall to south end of berm

Fasten 20 mats Type 1 to extra hanging plates



Photo #5: View showing proposed workRef# 11247 SCP May 1, 2015

Replace and weld broken hanging plate Type 2 at steel cap #1

Remove 0.6 m rock

Reinstall mat at broken hanging plate

Rock fall site of March 14, 2015

Trumer 2000 kJ catch fence


October 15, 2015

Install 41 extra hanging plates Type 2 (all steel caps)

Replace gabion wall on berm



Photo #6: View showing proposed workRef# 11113 SCP March 16, 2015

Replace and weld broken hanging plate at steel cap #1

Reinstall mat at broken hanging plate

Rock fall site of March 14, 2015File: 4502_Slide_5_Berm_Repair_Photos_Proposed_Work_Oct_15_2015.pptx

October 15, 2015

Repair catch fence (2013)




Re-install chain link (HPN) backing net using Geobrugg T3-clips on 0.6 m centres

Remove 0.6 m rock


Catchment cleanout in progressEmbankment berm (2008)

Steel cap #20


October 15, 2015




Weld 41 extra hanging plates Type II on caps #1 to 20 and hang mats on existing and extra plates

Catchment cleanout in progress


October 15, 2015

Photo #9: View showing proposed workRef# 10880 SCP October 25, 2013



Place mats Type 2 on berm between posts #2 and 3

Connecting cable for upper mat

Remove two mats Type 2

Type 5 mats replace Type 2 mats on gabion wall


October 15, 2015

Cap on berm (2008)

Post P1

Remove gabion wall on berm

Repair catch fence (2013)




Re-install chain link (HPN) backing and reinforce remaining net using Geobrugg T3-clips on 0.6 m centres

Place mats Type 2 between posts #2 and 3

Existing apron net to be placed on top of Type 2 mats

Replace two braking elements Trumer AVT phx 80/30-3.5 for upper bearing ropeFile: 4502_Slide_5_Berm_Repair_Photos_Proposed_Work_Oct_15_2015.pptx

October 15, 2015

Upper bearing rope

Replace braking element

Trumer AVT phx 80/30-3.5

See Trumer Installation Manual

Looking north

Bearing rope tension 1000 to 2000 lb (at the point when braking elements begin to activate)



Photo #11: View showing proposed work – south endRef# 11113 SCP March 16, 2015

Re-tension all four bearing ropes as required




October 15, 2015

Photo #12: View showing proposed work – north endRef# 11113 SCP March 16, 2015

Upper bearing rope

Replace braking element

Trumer AVT phx 80/30-3.5

See Trumer Installation Manual

Looking south

Bearing rope tension 1000 to 2000 lb (at the point when braking elements begin to activate)



Re-tension all four bearing ropes as required




October 15, 2015


Looking North




Patch hole with 3 m by 3 m gabion mesh panel and refill with gabion stones 100 to 200 mm size

Remove outer gabion layer and 14 conveyor belts

Cut #7 bars (36 bars) flush with top of berm

Gabion mesh patches to overlap 0.6 m all around and fasten with T3 clips on 0.1 m centres


October 15, 2015

Patch all holes in berm as required with gabion mesh panels and refill with gabion stones 100 to 200 mm size

Photo #14: View showing proposed workRef# 11097 SCP February 17, 2015

Repair berm (2008)



Wrap section0.9390.949

Wrap top two layers with one gabion roll 26 m long by 3 m wide

Push with excavator bucket to restore face angle to 80 degrees

Protect gabion wires with wooden planking


2 m size boulder removed after photo taken

South fence (2010)

Reinforcement mesh layer to be tensioned against berm


October 15, 2015

Berm (2008)

Photo #15: View showing proposed workRef# 11092 SCP February 12, 2015

Do not repair slightly damaged south fence






October 15, 2015

Berm (2008)







South fence (2010)


October 15, 2015

Berm (2008)


Infill any gaps in south portion of berm

Catch fence repair in progress



Remove outer gabion layer and 14 conveyor belts

Cut 36 steel bars (#7 size) flush with top of berm




October 15, 2015



HPN mesh patch to be 1.2 m by 1.2 m between existing cable net and HPN






October 15, 2015




HPN mesh patch to be 1.2 m by 1.2 m between existing cable net and HPN

Temporarily remove bottom lacing cable to install patch




October 15, 2015

highway #1, slide 5 area, catch fence and berm repair lki ... · highway #1, slide 5 area, catch...

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