Civil Engineering

Cois Teampaill

Land Forming & Groundworks

Extensive site clearance was required to achieve the necessary finished levels, generating a significantly higher volume of rubble than typically encountered on housing developments. Strip foundations were used throughout the scheme.

Sewer Infrastructure

The sewer network was relatively straightforward in layout; however, deep trenching was required. Ducting for CCTV cabling was incorporated across the site as part of the infrastructure works.

Water Well Drilling & Supply Infrastructure

Due to insufficient mains water supply, a private water source was developed. This involved drilling through solid rock to access groundwater, followed by the installation of distribution pipework, a reinforced concrete water storage tank and a full water purification system to ensure potable supply for residents.

No-Dig Technology

To install services beneath a national road without disrupting traffic flow, no-dig trenchless technology was employed, allowing pipes to be installed without excavation or road reinstatement.

Cois Srutháin

Land Forming & Site Engineering

This site presented multiple engineering challenges, including shallow rock beneath the surface and variable ground levels. A water and sewerage pumping station and a concrete water tank were required. Due to the proximity of a busy road, rock breaking was carried out mechanically rather than by blasting.

Sewer Infrastructure & Treatment

Following rock removal, the sewer network was installed and a pumping station constructed. The most significant element of the project was the installation of an on-site sewage treatment plant, required due to the absence of a nearby main sewer. Treated effluent is safely discharged as clean water into the adjoining river system.

Cois Ríoga

Land Forming & Foundations

Cois Ríoga was a relatively straightforward site with level ground conditions. Minor rock removal was required but posed no major engineering issues. Land forming works were carried out to support final landscaping. Strip foundations were used, with house footings constructed using insulated formwork rather than traditional blockwork.

Sewer Infrastructure

The flat site conditions simplified sewer installation, although deeper trenches were required in some areas to maintain falls. These works were completed efficiently without complication.

Cois Ghruada

Land Forming & Site Planning

This development was located on a steeply sloping site, requiring detailed engineering design and careful level management. Once the final levels were established, site stripping and land forming were carried out to accommodate foundation trenches. Strip foundations were used throughout.

Gas infrastructure was also integrated at this stage, as all homes were designed with gas-powered central heating systems.

Sewer & Services Infrastructure

The sewer network comprised concrete, steel (gas) and plastic pipes for the main runs, with plastic ducting used for CATV, telecommunications and electrical services.

Water Attenuation & Hydro-Break System

As the site previously functioned as a natural water basin, a comprehensive water attenuation system was required to prevent flooding. Subsurface storage was installed beneath the reclaimed land, allowing the area to retain equivalent water volumes despite reduced open water. A hydro-break system regulates flow to ensure the adjoining lake neither dries out in summer nor overflows during heavy rainfall.

Specialist Foundations – Piling

All housing units required piled foundations to ensure long-term stability. Piles were driven to bedrock at depths ranging from 10 to 32 metres. Once installed, pile heads were trimmed to expose reinforcement, which was then tied into the foundation steel to ensure full structural integration.

Cois Luachra

Land Reclamation & Environmental Engineering

Approximately 80% of this site consisted of a water basin, creating significant engineering and environmental challenges. Large-scale land reclamation was required, with careful consideration given to the site’s status as a bird sanctuary.

Reclamation was achieved using compacted, layered fill, with stabilising membranes installed between layers to minimise movement and ensure long-term stability for housing, roads and drainage infrastructure. This layered approach eliminated the need for extended settlement periods, enabling the project to progress efficiently.