Barn Oaks Residential Development consists of 463 no. residential units (comprised of houses, apartments, and duplex apartments), creche and associated site works on a 7.4-hectare site in Citywest. The apartments are split over 7 no. blocks, six-storeys high.

M&N were appointed as a subcontractor by Glenveagh Homes and as PSCS to carry out earthworks and civil engineering works for the Barn Oaks Citywest development.

The civil works package involved the establishment of the:

• Site compound and project offices including wheel wash facilities, provision of full-time road sweeper on local road network, plant storage/material set down areas including COSH quarantine areas, dedicated carparking and pedestrian routes
• New site entrance arrangement and local road and footpath upgrades in accordance with Chapter 8 Traffic Management
• Site clearance
• Earthworks, topsoil strip, and excavation of subsoil 60,000m³ and disposal off site to a licenced landfill facility in accordance with Article 27 of the European Communities (Waste Directive) Regulations 2011.
• Over 20km of utility ducting for ESB, Eir, Virgin and SDCC public lighting from 50mm diameter to 160mm diameter
• Permanent internal road networks adhering to TII road specifications
• Stormwater sewer network 4km including sealed and filter drains 150mm-600mm in diameter and foul sewer networks – 2.5km of pipelines with diameters of up to 450mm
• 2km of watermain pipes conforming to Irish Water standards of SDR17 PE pipes
• Construction of 2000m³ storm attenuation storage unit and a new bridge vehicle culvert installation 2.4m wide x 1.2 metres deep x 24 metres long including wingwalls at both ends in sensitive Inland Fisheries Ireland watercourse.
• The foul sewer works involved connecting the new development to an existing 450mm sewer line and diverting the existing line to facilitate the construction of permanent structures within the development.
• The site was heavily constrained by the existing busy road network and existing utility assets. The construction of the site entrance arrangement was complex, as it was located off an existing roundabout and involved early engagement with all utility providers which involved locating and protecting their assets, maintaining pedestrian/cyclist flows under the direction of a dedicated traffic marshal and maintaining the safe passage of vehicles through the works area using Chapter 8 TM arrangements. The site entrance works were undertaken under an M&N developed site compound and access plan together with Risk Assessments / Method Statements and a Traffic / Pedestrian Management Plan approved by South Dublin County Council.