Phase IV Preliminary Design - Geography at Robert Smyth · PDF filePhase IV Preliminary Design...
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Phase IV Preliminary Design Inland boundary of landslide system New seawall Soil nailing and drainage Stabilising piles CHURCH CLIFF ‘PREFERRED’ SCHEME) Approx. SAC Boundary
Transcript of Phase IV Preliminary Design - Geography at Robert Smyth · PDF filePhase IV Preliminary Design...
Phase IV Preliminary Design
Inland boundary of landslide system
New seawall
Soil nailing and drainage
Stabilising piles
CHURCH CLIFF ‘PREFERRED’ SCHEME)
Approx. SAC Boundary
Landslide Block Diagram – East Cliff
Phase IV Preliminary Design
Cut-off drains
Soil nailing and drainage
Terminal Rock armour
New seawall
Contiguous Pile Wall with Steel Ties and drainage
Ground preparation works
Soil nailing and drainage
EAST CLIFF ‘PREFERRED’ SOLUTION
Existing and realigned drainage system
Soil Nailing and drainage
Approx. SAC Boundary
Cut-off Drains
Plan of Church Cliff
Revised Scheme
Typical Section
Area of Soil
Nailing Proposed
sub-horizontal
drilled drains (15 – 30m long
Toe Drains
Soil Nails:~1808no. 100mm bore, 6m to 15m long, (1m grid)
Lyme Regis Environmental Improvements
Phase 4: Advanced Works 2003/04
Lyme Regis Environmental
Improvements - Phase 4: Advanced
Works 2003/04
Large
diameter
750mm &
1050mm pile
construction
Contract
WDDC - Client
Dean and Dyball - Main Contractor, appointed June 2012:
Target contract – design and build
URS – Detailed design consultant
Halcrow - Supervisor
Current Work – Environmental mitigation
Site investigation
Trials (soil nailing, retention, seeding
Detailed design
Consents – Planning
Marine Management Organisation
Spring 2013 - Start of heavy construction
Planning Requirements
ecological and landscape mitigation plan
hard and soft landscaping scheme
surface and groundwater drainage scheme
scheme for archaeological, geological and paleontological
observation and recording
Environment Group:
Working on the remaining planning issues, but also
considering scope for including information, access, artwork–
Geological Walk Through Time with QR coded slabs
Traffic management,
Meetings with Police, county council, town council, traders:
control of site traffic
East Cliff temporary closure
Charmouth Road Car Park site compound
control of site traffic
park and ride
site access via Compound, East Cliff and Gun Cliff Walk
limited pedestrian access on Gun Cliff Walk
Public Information
press releases
Update pamphlets
notice boards
Dorsetforyou website
Clive Evans emails
Following discussion with the town council:
no temporary information cabin
displays in the Jubilee Pavilion, manned by volunteers:
- information boards
- PowerPoint displays
- update pamphlets
- access and safety pamphlets
