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Cost comparison 10m 2m high wall 2

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Micheal Mullvihill

This document compares the installation requirements and costs of a concrete retaining wall to those of a Neptune retaining wall system. A concrete wall takes significantly longer to install at 29 days compared to 10 days for the Neptune system. The cost of installing a 10m section of concrete wall is over £44,000 while the Neptune system costs £13,030, a savings of over £31,000. The Neptune system also has a lower environmental impact than concrete and can be more easily dismantled at the end of its 75 year lifespan.

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Installation Requirements Comparison N/A Not Applicable Concrete Wall Neptune System Reduce Dig N/A Compact Bottoms N/A Blinding N/A concrete Kicker (Toe) N/A Water Bar (seal) N/A
concrete Retaining Wall N/A Steel mesh N/A Shuttering & concreting N/A Back fill, removal of waste N/A
Installation Timescales for 10 m 2m High CONCRETE INSTALLATION NEPTUNE INSTALLATION Fencing off of whole area, leasing of There is no water used in any of Fence, security and H & S advisers the manufacture of the System In accordance with Safe Working therefore Neptune can be installed Area regulations at an average In any weather conditions Cost of £100 p.w. On any terrain, day or night. Installation of a haul road. Concrete cannot be poured if the Fencing off of whole area, leasing of outside temperature is less than 20 F fence, security and H & S advisers During low temperatures the pouring in accordance with Safe Working Is delayed until such time at temperatures Area Regulations at an average £150 Have increased. Installation of a coffer dam in accordance With Safe Working Area Regulations (riverside or seaside) Average cost of £10K per 20m dam.
On excavation if a table of water is Discovered this will require the use of Pumps and the hire of a settlement N/A Tank in case of contaminated water Thus increasing costs at the point Of excavation. Average cost of £600 a WEEK Installation of 10 m of concrete at the Installation of 10 m takes 10 days Appropriate temperature without delays requiring around 3 persons. Will take up to 29 days to include curing Time, followed by painting on of Bitumen. Once the concrete has Cured the Site has to be back filled at a rate of 200 mm a layer of compaction using both N/A Man and machinery. The Safe Working Area Regulations have to be adhered to (every Metre deep has to be battered back to 600 mm) On completion the cleaning down of the N/A Site to include removal of haul roads, removal of Excess site waste.
Manpower Cost comparison per 10 m2 CONCRETE - 29 days NEPTUNE - 10 days Site agent - £30 p.h. x 8 x 29 days £6,960 Site agent - £30 p.h. x 8 x 10 days £2400 Engineer - £30 p.h. x 20 hrs £2,400 Engineer - £30 p.h. x 20 hrs £480 Foreman/Joiner - £22 p.h. x 8 x 29 £5,104 Foreman/joiner - £22 p.h. x 8 x 10 £1760 Joiners x 2 £17 x 8 x 29 £7,888 N/A Groundwork Team Groundwork Team Machine drivers£150 x 2 x 23.2 £6,960 Machine drivers £150 x 2 x 10 days £3000 Days Labourers£125 x 3 x22.5 Days £8,352 Labourers £125 x 3 x 10 days £3750
Haulage Haulage Shuttering (1 man/1vehicle x 8 hrs) £640 N/A Delivery £640 Delivery £640 Removal of shuttering £640 N/A Removal of waste £2,400 N/A Removal of temporary haul road £2,400 Installation/removal of Timber Matt £1,000 £6 Square metre per month Total costs: £44,384 Cost: £ 13,030 Concrete £44,384 Neptune costs: £13,030 Total savings: £31,354 66.6%
NEPTUNE SYSTEM Lifespan/effect on the Environment Concrete Neptune Concrete has a life span of 50 Life of 75 years with cladding Years. Produces greenhouse gases during Low carbon footprint The course of manufacturing Attractive to the eye And transit. Continuously releases these gases All materials are recyclable For a period of 10 years after Installation. Fuel costs in transporting and No back fill – no waste material Mixing continuously. Demolition Demolition Concrete contaminates land tips. Neptune can be a temporary Measure e.g. short term flood Defence around towns/villages Time span from demolition to
Back fill – 15 days. No back fill – no waste material Time span to dismantle 4 days. Increased fuel to transport broken concrete to land tips.

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Cost comparison 10m 2m high wall 2

  • 1. Installation Requirements Comparison N/A Not Applicable Concrete Wall Neptune System Reduce Dig N/A Compact Bottoms N/A Blinding N/A concrete Kicker (Toe) N/A Water Bar (seal) N/A
  • 2. concrete Retaining Wall N/A Steel mesh N/A Shuttering & concreting N/A Back fill, removal of waste N/A
  • 3. Installation Timescales for 10 m 2m High CONCRETE INSTALLATION NEPTUNE INSTALLATION Fencing off of whole area, leasing of There is no water used in any of Fence, security and H & S advisers the manufacture of the System In accordance with Safe Working therefore Neptune can be installed Area regulations at an average In any weather conditions Cost of £100 p.w. On any terrain, day or night. Installation of a haul road. Concrete cannot be poured if the Fencing off of whole area, leasing of outside temperature is less than 20 F fence, security and H & S advisers During low temperatures the pouring in accordance with Safe Working Is delayed until such time at temperatures Area Regulations at an average £150 Have increased. Installation of a coffer dam in accordance With Safe Working Area Regulations (riverside or seaside) Average cost of £10K per 20m dam.
  • 4. On excavation if a table of water is Discovered this will require the use of Pumps and the hire of a settlement N/A Tank in case of contaminated water Thus increasing costs at the point Of excavation. Average cost of £600 a WEEK Installation of 10 m of concrete at the Installation of 10 m takes 10 days Appropriate temperature without delays requiring around 3 persons. Will take up to 29 days to include curing Time, followed by painting on of Bitumen. Once the concrete has Cured the Site has to be back filled at a rate of 200 mm a layer of compaction using both N/A Man and machinery. The Safe Working Area Regulations have to be adhered to (every Metre deep has to be battered back to 600 mm) On completion the cleaning down of the N/A Site to include removal of haul roads, removal of Excess site waste.
  • 5. Manpower Cost comparison per 10 m2 CONCRETE - 29 days NEPTUNE - 10 days Site agent - £30 p.h. x 8 x 29 days £6,960 Site agent - £30 p.h. x 8 x 10 days £2400 Engineer - £30 p.h. x 20 hrs £2,400 Engineer - £30 p.h. x 20 hrs £480 Foreman/Joiner - £22 p.h. x 8 x 29 £5,104 Foreman/joiner - £22 p.h. x 8 x 10 £1760 Joiners x 2 £17 x 8 x 29 £7,888 N/A Groundwork Team Groundwork Team Machine drivers£150 x 2 x 23.2 £6,960 Machine drivers £150 x 2 x 10 days £3000 Days Labourers£125 x 3 x22.5 Days £8,352 Labourers £125 x 3 x 10 days £3750
  • 6. Haulage Haulage Shuttering (1 man/1vehicle x 8 hrs) £640 N/A Delivery £640 Delivery £640 Removal of shuttering £640 N/A Removal of waste £2,400 N/A Removal of temporary haul road £2,400 Installation/removal of Timber Matt £1,000 £6 Square metre per month Total costs: £44,384 Cost: £ 13,030 Concrete £44,384 Neptune costs: £13,030 Total savings: £31,354 66.6%
  • 7. NEPTUNE SYSTEM Lifespan/effect on the Environment Concrete Neptune Concrete has a life span of 50 Life of 75 years with cladding Years. Produces greenhouse gases during Low carbon footprint The course of manufacturing Attractive to the eye And transit. Continuously releases these gases All materials are recyclable For a period of 10 years after Installation. Fuel costs in transporting and No back fill – no waste material Mixing continuously. Demolition Demolition Concrete contaminates land tips. Neptune can be a temporary Measure e.g. short term flood Defence around towns/villages Time span from demolition to
  • 8. Back fill – 15 days. No back fill – no waste material Time span to dismantle 4 days. Increased fuel to transport broken concrete to land tips.