Preliminary Geological Data

Published: June 19, 2019 | Last updated: July 5, 2023

What Does Preliminary Geological Data Mean?

Preliminary geological data refers to the data collected during the subsoil survey of a site where construction is proposed. The study is undertaken using field study, available data and maps, based on which data is collated to come up with answers regarding site feasibility. Trenchless construction methods such as horizontal directional drilling (HDD) and microtunneling are carried out below the earth surface.

Sufficient geological data from geotechnical investigation is required to make informed decisions regarding the most feasible route for a project.


Trenchlesspedia Explains Preliminary Geological Data

Field studies for collecting preliminary geological data include complete inspection of outcrops, cut banks, erosion conditions, water bodies and other such data. Any geological conditions that may impact the outcome of a project can be noted and discussed using this data. Differing sub-surface soil conditions make preliminary geological investigation of prime importance for any construction project.

Data gathered includes recent publications from U.S. Geological Survey (USGS), State geological surveys, USDA soil survey reports, scientific publications, and data from previous projects conducted in that region. The data will also include details regarding the requirements of the project.


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