
Foundations transfer a building's load into the ground. The common types in Ireland are strip footings for load-bearing walls, pad bases for columns and portal frames, and raft foundations where loads must be spread across weaker ground.
Foundation type is decided by the structural engineer from the ground conditions and the loads above. The contractor's job is to build exactly what has been designed, at the right level, to the right dimensions.
Rayco Civils is a civil engineering and groundworks contractor based in Monamolin, Co. Wexford, working on sites across Ireland. Send drawings or a site location and we will price the works.
Strip footings run under load-bearing walls and are the most common domestic foundation in Ireland. The trench is excavated to the design depth, inspected, then poured and built up in rising walls to damp-proof course level.
Pad bases carry concentrated point loads from columns and portal frames and need accurate setting out for holding-down bolts. Rafts spread load over a wider area and are used where ground bearing capacity is lower or where a shallow solution is preferred.
Modular, timber frame and light gauge steel systems arrive with tight dimensional tolerances. Level, squareness and fixing positions are checked and recorded before the units arrive, because there is no adjustment on delivery day.
Depth is set by the structural engineer based on ground conditions, loading and depth to suitable bearing strata. It is not a figure a contractor should assume.
Yes, to the frame supplier's setting-out drawings and tolerances, with levels checked before delivery.
The engineer is informed and the foundation is not poured until a solution is agreed — usually deepening the dig, removing and replacing material, or a revised design.
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