Civil Engineering Knowledge Centre
Straight answers to the questions we get asked on site every week — what groundworks covers, what it costs, which foundation suits your ground and how Irish drainage systems are meant to be built.
A civil contractor builds everything below ground and at site level: clearance, excavation, foundations, drainage, ducting, concrete and access roads — handing a builder a site that is level, drained, serviced and ready to build on.
Read guideGroundworks is every operation that turns raw ground into a stable, drained, level formation ready to build on: clearance, excavation, filling, compaction, drainage and the ground floor slab.
Read guideGroundworks pricing is driven by six things: dig volume, ground type, cart-away distance, drainage length, foundation type and site access. Any quote given without those known is a guess.
Read guideStrip footings carry loads on narrow trenches under walls and suit firm ground at shallow depth. Rafts spread the load across the whole footprint and suit weak, variable or filled ground.
Read guideIrish sites use separate foul and storm systems. Foul goes to the sewer or a treatment system; storm goes to a soakaway, watercourse or attenuated connection. Mixing them fails at certification.
Read guideSite clearance is a sequenced operation: identify services and constraints, remove structures and vegetation, strip topsoil, segregate materials, and dispose of arisings through licensed facilities.
Read guideSite preparation runs from survey and setting out through clearance, excavation, drainage and compaction, and ends with a proven formation the builder can start on without delay.
Read guideJudge a civil contractor on four things: insurance and accreditation, the detail in their quotation, the plant and crews they actually control, and how they handle changes on site.
Read guideResidential groundworks are governed by foundation detail and drainage; commercial work is governed by loadings, floor tolerances, attenuation and programme. The plant is similar; the standards and paperwork are not.
Read guideIreland's dominant subsoils — boulder clay, shallow limestone, peat, alluvial silt and urban made ground — each change the dig, the foundation type and the drainage strategy in predictable ways.
Read guideSend us your drawings and we'll come back with a clear, itemised quotation for the civil works.