Customer: GEOANALYSIS S.A

Duration: August 2003 – March 2004

Object of work is the realisation of geotechnical research of –study with three (3) sampling –inquiring drillings at the implementation of which was received sufficient number of samples so that is carried out suitably adapted program of laboratorial trials. The arrangement of sampling drillings became selectively in the place of two techniques of (bridge with 2 endstands and in the extension of twin flagging sewer). Concretely are forecasted two drillings in the places of 2 endstands bridge in place X.Θ.16+500 of depth 20 until 30m individually and a (1) additional drilling of depth until 20m in the place of extension of twin flagging sewer in Χ.Θ.6+023m. Since it is enough extensive work, the conduct of completed geo-reseach program would require considerably higher cost and obviously bigger time horizon from forecasted in the present work. Consequently, certain indicative controls of stability gradient ditches became accordingly with the cross-sections of study of road construction with macroskopic assessment of geotechnical parameters of planning and ad loc geological observations geomaterial and their stratigrafy. The appro-priateness of materials of surfacing and excavate the subsoil and ditches is valued qualitatively also with base geological observation of field. At his duration of implementation geo-inquiring program they were executed ad loc trials type of – done trial of infiltration (SPT).
Aim above is the collection ad loc and laboratorial geotechnical data which will be evaluated suitably so:
– Be determined the geotechnical parameters of planning in the 2 places of techniques.
– Be calculated parametric the allowed axial charges of stakes in endstands the bridge, the expected subsidence’s of stakes and the horizontal and vertical springs of deep foundation in question.
– Be held the essential geotechnical controls of bearing faculty of subsoil, subsidence’s and definition of springs constants of subsoil of seating in the place of extension of twin flagging sewer.
In the realization of indicative controls stability in one from geometrically more unfavorably gradient ditches the into account of road construction, so that are proposed sure bents of excavation, and in the annotation of excavability geomaterial, as well as in the appropriateness their for use as materials of surfacing.

Role of TREDIT:
– Geotechnical investigation via 3 sampling boreholes located at two different structures (an over-crossing and a culvert)
– Geotechnical laboratory tests for determination of natural and mechanical properties of geo-materials of the subsoil
– Evaluation of a geotechnical investigation program results and editing of a technical report with statistically processed results of the in situ and laboratory tests, identification of geotechnical layers and geotechnical design parameters.
– Geotechnical calculation of bearing capacity of shallow foundations and bored piles, computation of anticipated settlements and subgrade reaction indices
– Indicative calculation of cut slope stability – assignment of safe inclination of cut slopes along the road axis evaluation of excavability of the subsoil and of the slopes, evaluation of excavated geo-materials whether they are appropriate to be used as construction material of road embankments