MaaRYL
MaaRYL brings together up-to-date quality requirements for earthworks and foundation structures so that design, construction, and supervision are based on the same standards.
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A geotechnical designer investigates soil conditions and determines how structures should be founded, as well as how bearing capacity, settlement, and groundwater issues are managed.
Instead of describing every implementation quality requirement separately, design documents refer to MaaRYL requirements.
During construction, MaaRYL serves as a common framework supporting implementation according to the design.


The client initiates infrastructure projects such as roads or logistics areas, where the quality of earthworks plays a critical role in durability, maintenance, and lifecycle costs.
Tender documents reference MaaRYL, ensuring earthworks requirements are clear and consistent for all bidders.
During the contract phase, MaaRYL serves as a common foundation for execution.
The contractor carries out excavations, fills, embankments, and structural layers.
MaaRYL guides work methods, material requirements, and compaction to ensure the finished result meets the intended bearing capacity and functionality.


The supervisor ensures that infrastructure work complies with contracts and technical requirements.
InfraRYL provides concrete criteria for evaluating the quality of structures, materials, and execution.
This means assessments are based on shared rules rather than subjective interpretation.
Excavator operators, compaction equipment operators, and installers physically construct the structural layers.
MaaRYL provides concrete requirements for compaction levels, layer thicknesses, implementation methods, and more.

RYL’s established role as the project's general technical reference document is comparable to that of the contractual document YSE.
The Building Act and YSE require that design and construction be carried out in accordance with good construction practice.
