Download pdf - Phase IV Preliminary Design - Geography at Robert Smyth · PDF filePhase IV Preliminary Design Cut-off drains Soil nailing and drainage Terminal Rock armour New seawall Contiguous

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

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Phase IV Preliminary Design

Cut-off drains


Terminal Rock armour

New seawall

Contiguous Pile Wall with Steel Ties and drainage

Ground preparation works


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











