Davidss
Member
- Posts
- 15
- Location
- Derbyshire, Matlock-ish
I thought people might be interested in the repair 'Method Statement' produced by the Highway Authority, Derbyshire County Council.
This repairs the surface, and hopefully inhibits rainwater from penetrating the road infill, where it currently washes out the 'fines', thus weakening the structure. This is not a repair to the retaining wall (revetment) itself. As far as we know, no such 'repair' is scheduled.
The drawing nos. 47067176/PW/01 & 02 have not currently been made available to us.
Readers should be aware that immediately after the repair is completed (and the current DCC TROs withdrawn) the Peak District National Park Authority intend to apply a TRO prohibiting all Recreational Motorised Vehicles from the Long Causeway.
The PDNPA are expected to renew their mandate to close the Long Causeway at a meeting on Friday 18th July, 10.00am. Details of this meeting, and the associated Reports and Appendicies, can be found here on the Park Website.
Long Causeway is also known as Stanage Edge
METHOD STATEMENT ■ Derbyshire County Council
Location: Long Causeway, Stanage Edge Grid Ref: SK 239 845
Scheme Title: Outseats BOAT No 48
Start Date: 30th June 2014 Duration: 15 weeks
Activities: Surfacing and Drainage works
"Chainages referred to are shown on drawing nos. 47067176/PW/01 & 02.
(1) A closure shall be in place on the BOAT for the duration of the works.
(2) The works shall be carried out in 2 phases however the two phases will overlap:
Phase 1 - July to August - Ch 0 to 250 - access for plant and material via Dennis Knoll
Phase 2 - September to October - Ch 250 to Stanedge Pole - access for plant and material via Redmires Road.
(3) Movements of plant and material over the retaining wall section (Ch 100 to 250) to be kept to a minimum. All plant to be kept a minimum of 1.0m away from the face of the retaining wall by the erection of pins and bunting.
(4) Areas of special vegetation are to be identified by Peak District National Park Authority and protected by the erection of pins and bunting.
(5) Noise levels are to be kept to a minimum, particularly before mid-July due to ground nesting birds.
(6) Material used for track surfacing to be Gritstone sub-base, grading 40mm to dust (or 75mm to dust in deep areas).
(7) Existing drainage features to be maintained/ repaired wherever possible.
(8) The exact location of new drainage features to be based on advice from Peak District National Park and Natural England.
(9) The surfacing works are to take place within the footprint of the existing track with the perimeter bedrock retained where practical and does not pose a hazard to users.
(10) The existing paved and cobbled sections shall be protected from disturbance by site works and retained in the finished surfacing.
Phase 1 - Ch 0 to 250
(11) Access to be via Dennis Knoll and through the locked barrier.
(12) All works to be contained within the footprint of the track.
(13) Materials to be delivered by road lorries to a stockpile area on the car park at Dennis Knoll.
(14) From the storage area the material would be collected and spread/compacted on the track
using the following items of plant:
JCB 3CX
6t Swivel Dumper
Bomag 120 vib roller.
(15) The montabert breaker attachment is not to be used on the section of retaining wall (Ch 100 to 250).
Vibrating plant is not to be used within 1.0m from the face of the wall.
(16) On the section of track over the retaining wall, existing loose rock and any protruding bedrock in the centre of the track which it is necessary to remove is to be broken out using the Cardox System. This work is programmed for the 11th August and expected to take a week to complete. The path closure is to be reinforced by temporary fencing each end of the section being worked on and a traffic marshall will be present to prevent access to the area by members of the public.
The Cardox System produces a powerful heaving force using carbon dioxide which cracks and breaks away the rock along natural and/or induced fracture plains whilst heaving it away from the mass of rock. The work is carried out by a specialist sub-contractor who drills a hole in the rock using a compressor and rock drill. The Cardox tube is inserted and a connection is made to a low tension activator, which passes an impulse to the charged tube, the low tension electric fuse then initiates a rapid reaction in the energiser causing the liquid carbon dioxide in the tube to change into gas. increasing in volume by 600 times. The instantaneous build-up in pressure reaches the yielding pressure of the rupture disc which bursts releasing a heaving mass of C02 which breaks the rock along fault lines. The whole process takes less than 1 second. By selecting the thickness of the rupture disc, the power of the tube can be regulated to suit all conditions.
Phase 2 - Ch 250 to Stanedge Pole
(17) Access to be via Redmires Road (past Redmires Reservoir) and through the locked barrier.
(18) Materials to be delivered by road lorries to a stockpile area at the double gateway to the plantation. Access is not required by Sheffield City Council.
(19) From here the material is to be loaded by a JCB 3CX into a JCB 718 articulated dump truck for transporting to the working area.
(20) Minimal surfacing work is to be done on the access to Stanedge Pole at the request of Sheffield City Council.
(21) On the access to Stanedge Pole, just beyond the field gate, there is a row of gritstone slabs on the RHS of the path as you walk uphill. These slabs are not to be disturbed by site traffic, and shall be protected by the erection of pins and bunting.
(22) Further on, the granite slabs move across the path diagonally and finish, at this point a temporary trackway or layer of geotextile membrane and gritstone sub-base, will be placed over the slabs to protect them from being disturbed by site traffic, and uncovered on completion of the works.
(23) Approximately 120m after Stanedge Pole there is a 100m long paved section with a double row of gritstone paving slabs. A lightweight trackway would have to be installed over this length to help spread the weight, and suitable tyres be fitted to the dump truck to ensure that any risk of damage to the underlying stones is reduces to a minimum.
(24) The JCB 718 would deliver the materials to a temporary stockpile area within the works area, where a turnaround space would also be created. The preferred site for the onsite storage area is on the outside of the bend at approximate Ch 700. This is subject to approval by the PDNPA and Natural England, and a method of working being agreed.
(25) From the onsite storage area the material would be collected and spread/ compacted on the track using the following items of plant:
JCB 3CX
6t Swivel Dumper
Bomag 120 vib roller.
(26) Bedrock is to be retained where levels permit. A montabert 125 attachment will be fitted to the JCB 3CX and the top of the rock broke out to below finished surface level.
Regards.
This repairs the surface, and hopefully inhibits rainwater from penetrating the road infill, where it currently washes out the 'fines', thus weakening the structure. This is not a repair to the retaining wall (revetment) itself. As far as we know, no such 'repair' is scheduled.
The drawing nos. 47067176/PW/01 & 02 have not currently been made available to us.
Readers should be aware that immediately after the repair is completed (and the current DCC TROs withdrawn) the Peak District National Park Authority intend to apply a TRO prohibiting all Recreational Motorised Vehicles from the Long Causeway.
The PDNPA are expected to renew their mandate to close the Long Causeway at a meeting on Friday 18th July, 10.00am. Details of this meeting, and the associated Reports and Appendicies, can be found here on the Park Website.
Long Causeway is also known as Stanage Edge
METHOD STATEMENT ■ Derbyshire County Council
Location: Long Causeway, Stanage Edge Grid Ref: SK 239 845
Scheme Title: Outseats BOAT No 48
Start Date: 30th June 2014 Duration: 15 weeks
Activities: Surfacing and Drainage works
"Chainages referred to are shown on drawing nos. 47067176/PW/01 & 02.
(1) A closure shall be in place on the BOAT for the duration of the works.
(2) The works shall be carried out in 2 phases however the two phases will overlap:
Phase 1 - July to August - Ch 0 to 250 - access for plant and material via Dennis Knoll
Phase 2 - September to October - Ch 250 to Stanedge Pole - access for plant and material via Redmires Road.
(3) Movements of plant and material over the retaining wall section (Ch 100 to 250) to be kept to a minimum. All plant to be kept a minimum of 1.0m away from the face of the retaining wall by the erection of pins and bunting.
(4) Areas of special vegetation are to be identified by Peak District National Park Authority and protected by the erection of pins and bunting.
(5) Noise levels are to be kept to a minimum, particularly before mid-July due to ground nesting birds.
(6) Material used for track surfacing to be Gritstone sub-base, grading 40mm to dust (or 75mm to dust in deep areas).
(7) Existing drainage features to be maintained/ repaired wherever possible.
(8) The exact location of new drainage features to be based on advice from Peak District National Park and Natural England.
(9) The surfacing works are to take place within the footprint of the existing track with the perimeter bedrock retained where practical and does not pose a hazard to users.
(10) The existing paved and cobbled sections shall be protected from disturbance by site works and retained in the finished surfacing.
Phase 1 - Ch 0 to 250
(11) Access to be via Dennis Knoll and through the locked barrier.
(12) All works to be contained within the footprint of the track.
(13) Materials to be delivered by road lorries to a stockpile area on the car park at Dennis Knoll.
(14) From the storage area the material would be collected and spread/compacted on the track
using the following items of plant:
JCB 3CX
6t Swivel Dumper
Bomag 120 vib roller.
(15) The montabert breaker attachment is not to be used on the section of retaining wall (Ch 100 to 250).
Vibrating plant is not to be used within 1.0m from the face of the wall.
(16) On the section of track over the retaining wall, existing loose rock and any protruding bedrock in the centre of the track which it is necessary to remove is to be broken out using the Cardox System. This work is programmed for the 11th August and expected to take a week to complete. The path closure is to be reinforced by temporary fencing each end of the section being worked on and a traffic marshall will be present to prevent access to the area by members of the public.
The Cardox System produces a powerful heaving force using carbon dioxide which cracks and breaks away the rock along natural and/or induced fracture plains whilst heaving it away from the mass of rock. The work is carried out by a specialist sub-contractor who drills a hole in the rock using a compressor and rock drill. The Cardox tube is inserted and a connection is made to a low tension activator, which passes an impulse to the charged tube, the low tension electric fuse then initiates a rapid reaction in the energiser causing the liquid carbon dioxide in the tube to change into gas. increasing in volume by 600 times. The instantaneous build-up in pressure reaches the yielding pressure of the rupture disc which bursts releasing a heaving mass of C02 which breaks the rock along fault lines. The whole process takes less than 1 second. By selecting the thickness of the rupture disc, the power of the tube can be regulated to suit all conditions.
Phase 2 - Ch 250 to Stanedge Pole
(17) Access to be via Redmires Road (past Redmires Reservoir) and through the locked barrier.
(18) Materials to be delivered by road lorries to a stockpile area at the double gateway to the plantation. Access is not required by Sheffield City Council.
(19) From here the material is to be loaded by a JCB 3CX into a JCB 718 articulated dump truck for transporting to the working area.
(20) Minimal surfacing work is to be done on the access to Stanedge Pole at the request of Sheffield City Council.
(21) On the access to Stanedge Pole, just beyond the field gate, there is a row of gritstone slabs on the RHS of the path as you walk uphill. These slabs are not to be disturbed by site traffic, and shall be protected by the erection of pins and bunting.
(22) Further on, the granite slabs move across the path diagonally and finish, at this point a temporary trackway or layer of geotextile membrane and gritstone sub-base, will be placed over the slabs to protect them from being disturbed by site traffic, and uncovered on completion of the works.
(23) Approximately 120m after Stanedge Pole there is a 100m long paved section with a double row of gritstone paving slabs. A lightweight trackway would have to be installed over this length to help spread the weight, and suitable tyres be fitted to the dump truck to ensure that any risk of damage to the underlying stones is reduces to a minimum.
(24) The JCB 718 would deliver the materials to a temporary stockpile area within the works area, where a turnaround space would also be created. The preferred site for the onsite storage area is on the outside of the bend at approximate Ch 700. This is subject to approval by the PDNPA and Natural England, and a method of working being agreed.
(25) From the onsite storage area the material would be collected and spread/ compacted on the track using the following items of plant:
JCB 3CX
6t Swivel Dumper
Bomag 120 vib roller.
(26) Bedrock is to be retained where levels permit. A montabert 125 attachment will be fitted to the JCB 3CX and the top of the rock broke out to below finished surface level.
Regards.
