The work in each section includes the following:

1. Section 1A Northbound (Mountain Side). SV 600 to SV 1100. March to November 2008

• Sewers.
  100m of 160mm plus 150m of 250 mm diameter uPVC, with manholes erf connections and inspection chambers.
• Water Reticulation.
  510m of 315mm diameter uPVC with valves, consumer connections and meters.
  The removal of the redundant cast-iron water main.
• Stormwater Drainage.
  50m of 375mm concrete pipe with manholes, 4 cycle-friendly catch pits and 500m of subsoil drains.
• Road and Footway Construction.
  The new road was constructed using the old sandstone kerbs and channels on the modified alignment. The width of the new road is 3,7m from centreline to face of kerb. The footway width varies from an absolute minimum width of 1,5m and up to 3m where space permits.
• Problems Encountered.
  Abnormal Rainfall: 22 days of rain was recorded over the 3-month period July, August and September 2008. Additional consequential delays were experienced because of localised flooding.
  Physical Constraints: Leaking joints on the existing 375-diameter outfall sewer from Dalebrook pump station. The hand removal of large boulders due to the proximity of existing fragile services. Difficult excavation in the bedrock at Rhodes Cottage to install the stormwater pipe crossing
  
  

2. Section 1B Southbound (Sea Side) SV 600 to SV 1100. January to September 2009

• Bulk Water Main.
  520m of 600mm diameter ductile-iron bulk supply main to serve the Deep South, including two reinforced concrete valve chambers as well as air-release and scour valves.
• Sewer Rising Main.
  On completion of this section of bulk water main the redundant 500 water main was utilised as a sleeve to accommodate 410m of 450mm diameter high-density polyethylene (HDPE) sewer rising main. The rising main was butt welded above ground using specialist equipment and pulled through the old water pipe in three sections using a heavy-duty winch.
• Stormwater Drainage.
  160m of concrete stormwater pipes between 300mm and 600mm diameter with manholes were installed, including four cycle-friendly catch pits and 500m of subsoil drains.
• Road and Footway Construction.
  The road and footway configuration is similar to Section 1A, with a 3,7m wide asphalt carriageway, sandstone kerbs and channels and the addition of a 2,5m wide brick paved parallel parking embayment for thirteen cars opposite Rhodes Cottage.
• Problems Encountered.
  Physical Constraints: The rate of excavation for the water main was significantly affected by the close proximity of existing low and medium voltage electricity cables on the line of the bulk water main. A modified electrical service way-leave was issued and extensive hand excavation and temporary cable support was carried out.
  The excavation for the stormwater outfall was also affected by bedrock near Rhodes Cottage.
  
  

3. Section 2A Southbound (Sea Side). SV 1100 to SV 1700. September 2009 to April 2010

• Bulk Water Main (85%)
  600m of 600mm diameter ductile-iron bulk supply main with a reinforced concrete valve chamber located at St. James Station including the necessary air-release and scour valves. This section also includes two 6m long by 1m vertical pipe offsets to accommodate the stormwater outfalls.
• Sewer Rising Main. (0%)
  On completion of the bulk water main the redundant 500 water main will serve as a sleeve to accommodate 600m of 450mm diameter high-density polyethylene (HDPE) sewer rising main.
• Stormwater Drainage. (60%)
  This section requires extensive stormwater drainage to intercept several mountain springs. The reinforced concrete pipes installed to date together with the necessary manholes are as follows: 7 m of 750 mm; 20m of 450mm, 150m of 375mm and 120m of 300mm diameter including seven cycle-friendly catch pits and connections.
• Sewers. (75%)
  60m of 110mm rider sewer with manholes and inspection chambers to connect the railway station and Octopus Garden restaurant in St. James.
• Road and Footway Construction. (60%)
  In addition to the 600m of 3,7m wide asphalt surfaced carriageway, 2,5m wide brick-paved embayed parking for 81 vehicles has been provided. The addition of a reinforced concrete slab with columns was necessary to widen the footway along the full length (95m) of the existing retaining wall opposite Carisbrook.
• Problems Encountered.
  Physical Constraints: Similar to Section 1B the presence of live electricity cables on the line of the 600 water main is impeding progress with the excavation. Hand excavation is necessary to expose, support and reposition the cables to accommodate the installation of the bulk water main.
  Additional Delays: Metrorail approval for the alterations to Carisbrook subway is currently delaying completion of the footway.
  

4. Section 2B Northbound (Mountain Side). SV 1100 to SV 1700. April to July 201

• Sewers.
  The existing 250mm sewer has been rehabilitated using a reinforced CIPP soft liner for the full length (600m) of this section. Sewer connections will be re-laid using heavy-duty uPVC where the existing main is less than 2m deep, for the short section where the main is deeper than 2m a new rider sewer will be constructed. On completion of the sewer, the existing manholes will be rehabilitated and the redundant connections sealed internally.
  
• Water Reticulation.
  600m of 315mm diameter uPVC pipe with valves, consumer connection and meters. To reduce construction time the existing cast-iron main will be sealed and left in place where possible.
  
• Stormwater Drainage.
  The stormwater pipe work on this section is nominal as the reticulation has been constructed on the sea-side of the road, the catch pit connections, constructed in Section 2A, will be extended and connected to seven cycle-friendly catch pits and two mountain springs.
  
• Road and Footway Construction.
  The carriageway is a conventional 3,7m wide asphalt surface with the re-used sandstone kerbs and channels. A short section of embayed brick paved parking near Heytor Road will accommodate three vehicles. The majority of the footway on this section of road has a minimum width of 1,5m.
  
  

5. Dalebrook Extension Southbound (Sea Side). SV 2200 to SV 2500. April to July 2010

• Bulk Water Main.
  In order to accelerate the project, the extension of the 600mm diameter ductile-iron bulk water main to Dalebrook pump station will be constructed concurrently with Section 2B. Additional resources will be deployed to carry out this work, the operation will be limited to a 30m long section of road, and traffic will be controlled with stop/go boards during the day. Trenches will be backfilled and temporarily surfaced with gravel. The road will be reopened to two-way traffic after normal working hour

6. Section 3A Southbound (Sea Side). SV 1700 to SV 2200. July to October 2010

• Bulk Water Main. (0%)
  500m of 600mm diameter ductile-iron bulk supply main including a reinforced concrete valve chamber located at the end of the line near Dalebrook pump station. The necessary air-release and scour valves will be installed simultaneously. This section also includes two 6m long by 1m vertical pipe offsets to accommodate the two stormwater outfalls located south of St. James Station and Capri Road.
• Sewer Rising Main. (0%)
  On completion of the bulk water main the redundant 500 water main will serve as a sleeve to accommodate the full 800m of 450mm diameter high-density polyethylene (HDPE) sewer rising main, which will be connected, to the Dalebrook sewage pump station.
• Stormwater Drainage. (0%)
  This section requires modifications and additions to the existing stormwater drainage system including the replacement of two pipe crossings and the addition of a subsoil drain for the complete length. The full extent of the drainage requirements has not yet been established.
• Sewers. (0%)
  Two rider sewers will be constructed to connect the properties on the sea-side of the road to the existing sewer located on the mountain side of this section
• Road and Footway Construction. (0%)
  In addition to the 500m of 3,7m wide asphalt surfaced carriageway, 2,2m wide brick-paved embayed parking for has been planned. Due to space constraints, the majority of the footway on this section will conform to the minimum width of 1,5m.
• Problems Expected.
  Physical Constraints: The proximity of live electricity cables on the line of the 600mm bulk water main is likely to slow down the rate of excavation.
  

7. Section 3B Northbound (Mountain Side). SV 1700 to SV 2200. October to December 2010

• Sewers.
  The existing 250mm sewer has been rehabilitated up to Dalebrook pump station using a reinforced CIPP soft liner. The length of rehabilitated sewer is approximately 440 metres on this section. Between Capri and Ley Road, a section of the existing sewer has a reverse gradient. This 60m section will be completely re-laid using 250mm diameter heavy-duty uPVC pipe. Sewer connections will be replaced using heavy-duty uPVC where the existing main is less than 2m deep, for deeper sections, a new rider sewer will be constructed. On completion of the sewer, the existing manholes will be rehabilitated and the redundant connections sealed internally.
• Water Reticulation.
  500m of 315mm diameter uPVC pipe with valves, consumer connection and meters. To reduce construction time the existing cast-iron main will be sealed and left in place where possible.
• Stormwater Drainage.
  This section also requires modifications and additions to the existing stormwater drainage system including the replacement of pipe crossings and the addition of a subsoil drain for the complete length. The full extent of the drainage requirements has not yet been established.
• Road and Footway Construction.
  The carriageway is a conventional 3,7m wide asphalt surface. The existing stone kerbs and channels will also be reused in this section. A short section of embayed brick paved parking near St. James Retirement Hotel will accommodate three vehicles. Due to space constraints, the majority of the footway on this section of road is limited to a width of 1,5m.
• Problems Expected.
  Physical Constraints: Excavation up to depths of 4m to replace the 60m section of 250mm diameter sewer between Capri and Ley Road.