Naue UnpavedRoad – modified GH

Naue UnpavedRoad – modified GH is a free online calculator in the Naue Portal DesignSuite. It helps to design the unbound base course of unpaved roads like temporary access roads, haul roads and working areas, using the modified Giroud & Han method and the performance of Secugrid^® geogrids and Combigrid^® geocomposites.

It is based on the proven Giroud & Han approach (2004), refined ('modified') to incorporate the advanced performance properties of Naue Secugrid^® geogrids and Combigrid^® geocomposites for a more efficient and reliable design.

For temporary and unpaved roads: construction and industrial access roads, haul roads, working platforms and staging areas - particularly where the subgrade is weak or soft.

The load (vehicle type, axle load and wheel width), the requirements (permissible rut depth and number of passes, with an optional lane-tracking effect), the subgrade (type and CBR or Ev2/modulus), the base-course material, and the Secugrid^®/Combigrid^® reinforcement.

They provide a combined stabilisation, reinforcement, separation, and filtration effect. Based on verified product performance, the tool reduces the required unbound base-course thickness at equal performance, cutting aggregate use and cost.

Yes. An optional wheel-wandering (lane-tracking) simulation spreads wheel loads laterally across the road width, reducing stress on weak subsoils. Vehicle configurations can be converted into ESALs using the Naue AxleLoad tool.

It calculates the total saving compared with a conventional solution without geosynthetics, produces a downloadable report, and lets you save the calculation to a project in the Naue Portal.

It is free within the Naue Portal and requires a portal login, with mobile and desktop access. You can register here. The software tools are aimed at design engineers, planners, contractors and project owners.