Dodder CFRAM Study & Final Section of Coastal Protection at Lansdowne Jean Hobbs, Chartered Engineer, BA BAI MIEI Technical Director, RPS Consulting Engineers Engineers Ireland - Wednesday, 12th February 2014 rpsgroup.com/ireland Introduction The Dodder Catchment forms part of the Eastern RBD rpsgroup.com/ireland Overview of the Dodder Catchment Incorporates 3 Council Areas: South Dublin, Dún Laoghaire Rathdown & Dublin City. An Area of 12,100 hectares. Source: Kippure Mountain – height of 763m. The Catchment joins the River Liffey at Ringsend. Tidal up to Ballsbridge. rpsgroup.com/ireland Final Section of Coastal Protection Coastal Protection Scheme at Lansdowne Road Marian College NOTE: Drawing is Indicative only rpsgroup.com/ireland Final Section of Coastal Protection Flood Protection Options for Marian College – at Planning Stage Typical Embankment Profile Earth Reinforced Embankment Flood Defence Level Existing Wall Existing Fence 2000 EGL 3450 Marian College DODDER RIVER Plan – not to scale Section A-A – not to scale rpsgroup.com/ireland Final Section of Coastal Protection NOTE: Drawings are Indicative only Opt. 1 Flood Defence Level Existing Wall Existing Fence EGL DODDER RIVER Sheet Piling Opt. 2 Proposed Railing Flood Defence Level Existing Wall Existing Fenceline EGL DODDER RIVER rpsgroup.com/ireland Final Section of Coastal Protection NOTE: Drawings are Indicative only Opt. 3 Flood Defence Level Existing Wall Existing Fence 3000 EGL DODDER RIVER Opt. 4 Earth Reinforced Embankment Flood Defence Level Existing Wall Existing Fence 2000 EGL DODDER RIVER Erosion Control Layer (or equivalent) to be provided. Actual Slope, based on specific type of Embankment. rpsgroup.com/ireland Final Section of Coastal Protection Opt. 5 Proposed Ground Level Flood Defence Level EGL Existing Wall Existing Fence Opt. 6 Flood Defence Level Existing Fence DODDER RIVER rpsgroup.com/ireland Final Section of Coastal Protection Recommended Scheme: • Right Bank (Marian College): RC Wall along existing boundary to school. 200m x 1.5m • Left Bank (Lansdowne Road): RC Wall at top of river bank. 200m x 2m • Flood Gates x 4no. • Railings • Public Lighting Planning Permission granted July 2011 Construction commenced August 2011 – OPW 7 month programme Marian College rpsgroup.com/ireland Final Section of Coastal Protection Damage to Quay Wall after Storm Event – October 2011 rpsgroup.com/ireland Final Section of Coastal Protection Emergency Works to Damaged Quay Wall rpsgroup.com/ireland Final Section of Coastal Protection Left Bank Piling to avoid live R&P 1500mm Brick Sewer rpsgroup.com/ireland Final Section of Coastal Protection DART Line View: As-Built Photo rpsgroup.com/ireland Final Section of Coastal Protection New Bridge View: As-Built Photo rpsgroup.com/ireland Dodder CFRAM Study & Final Section of Coastal Protection at Lansdowne Jean Hobbs, Chartered Engineer, BA BAI MIEI Technical Director, RPS Consulting Engineers Engineers Ireland - Wednesday, 12th February 2014 rpsgroup.com/ireland
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