LADOTD’s New Geotechnical

GIS Database

Scott L. Deaton,

Ph.D. President

Traditional Process

Digital Data Management Process

DOTD gINT Files Overview

Borehole Data

Samples, layers, water levels, drilling notes,

etc.

Laboratory Test Data – with all data

Atterberg Limits

Sieve/Hydrometer

Specific Gravity

Proctor

Unconfined Compression

Chemical testing

DOTD gINT Files Overview

Laboratory Test Data – with only results &

associated data file

Consolidation, Triaxial, Direct Shear

CPT Data

Vane Shear Data

Test Pile Load Test Data

Coordinate Conversion

Convert from State Plane or UTM to

Latitude/Longitude or vice versa

Converts when either Latitude/Longitude

or North/East fields are blank

Security Tool

Allows users to customize gINT interface

depending on the role of the user

Interface can be adjusted by:

Project Purpose (project type)

Role based on Windows Login/Domain

Security Tool Features

Tailor the user interface to fit users

specific needs

Set permissions to limit the data to which

they should have access

Validation Rules

Each table has validation rules

Permissions related rules

Add/edit/delete permission

Calculations

N-value from blow counts

Water content from raw data

Liquid Limit, Plastic Limit, soil classification, etc.

Reality Check

Depth for a record <= bottom of hole

Bottom depth > Top depth (samples, layers, etc)

RAPID CPT

RAPID CPT Importers

Vertek (no specific

file extension) it is

the depth where

test occurred

Hogentogler (.dis)

Fugro (.tim)

A P Van den Berg

(.gru)

LADOT**

Vertek (.ecp, .dat)

Hogentogler

(Analog/Digital) – (.cpd,

.cpt)

A B Geotech (.cpt, .cpd)

Fugro (.dep)

A P Van den Berg (.gru)

Others see manual

Pore Pressure Dissipation

Tip, Sleeve, Pore Pressure, etc.

Seismic Importers

P-Wave Velocity (.xls)

S-Wave Velocity (.xls)

Calculated Parameters

Normalized Soil Behavior Type (1990)

Soil Behavior Type (1986)

Fuzzy Classification**

Probabilistic Classification**

Ic – Material Index

Qt – normalized tip resistance

Bq – normalized pore pressure

Fr – normalized friction ratio

RF – friction ratio

Density (r)

Relative Density (Dr)

Shear Wave Velocity

Rigidity Index (Ir)

Void Ratio (e0)

Effective Friction Angle (f’)

Constrained Modulus (M)

Coefficient of Lateral Earth Pressure (K0)

Undrained Shear Strength (Su)

Overconsolidation Ratio (OCR)

Sensitivity

Fines Content

Equivalent (N1)60

Ed

Id

Kd

Many others - refer to document titled “CPT Correlations”

Benefits

CPT data is in the database!

Provide consistent and complete analysis

Dynamic calculations and reporting

Users can specify values used in correlations & calculations

Report borehole, CPT, VST and lab data together to facilitate comparisons

Other Practical Applications

Correlate Su (CPT) with Su (VST)

Correlate Su (CPT) with Su lab tests

Query CPT to find problematic materials

based on SBT, Probabilistic or Fuzzy

Parameters

Pile Load Test Data

Pile Load Test data is in the database!

(instead of Excel files scattered all over

the network)

Supports comparing pile load test data

with investigation data from CPT,

Borehole, VST, and lab testing

Software Demo

Log Reports

Fence Reports

Other Reports

Graph Reports

LADOTD – Grain Size

LADOTD – Pile Load Test

Lots of standard graph reports Dataforensics

included with no customization for LADOTD

Atterberg Limits

Compaction

Compaction (multiple curves per graph)

Consolidation

Grain Size

Index Props

Text Tables

Test Summary

Project Summary

Key to Symbols

Graphic Text

Docs

Text Docs

Project Summary

Historical Data Archiving

Compile

Data Cleanse

Standardize

Archive

Historical Data Cleaning

Raw CPT data files with latitude and

longitude in various formats

Existing borehole data in gINT with latitude

and longitude in various formats

Overloading data fields (N-Value, Blow

counts, UU Triaxial)

Existing borehole data without coordinates

Historical Data Cleansing

Existing CPT data without coordinates or

with coordinates in another file format

Scanned boreholes without coordinates or

with coordinates in another file format

Incorporating scanned borehole logs into

PLog Enterprise

Historical Data Cleansing

Nonsensical coordinates

Conflicts between coordinates in 03-1GT

project and current project

Projects in English/Metric units

Duplicate data

Duplicate Project IDs

Text data that should be numeric

Historical Data Summary

1645 point locations

Hole Type Number of Holes

Scanned Boreholes 153*

Scanned Boreholes with Estimated Location 35*

Legacy gINT Boreholes 297

CPT Soundings 1080

CPT Soundings with Estimate Location 11

Boreholes in new gINT Format 69

Conclusions A comprehensive geotechnical data

management system was configured for

LADOTD

Utilizes RAPID CPT, PLog Enterprise, gINT,

ArcGIS Server, Flex & ASP.net technology

Data entry, reporting, archiving, & retrieval

is now standardized & automated

Retrieval via map interface in ArcGIS 9.2,

9.3 & 10.0 or web-based ArcServer

Conclusions

Built upon 03-1GT and 06-6GT projects

to create a reference resource

Aid in evaluation of site data

Allow for more accurate and cost effective

design decisions

~$20,000,000 of geotechnical data was

standardized and archived into the

database

Acknowledgements

The financial support for this project was provided by the

Louisiana Department of Transportation and

Development/Louisiana Transportation Research Center

(LTRC) under State Project No. and LTRC Research

Project No. 10-2GT.

We would like to express thanks to all those on the PRC

who provided guidance and assistance on this project

In particular, the guidance and assistance from Ben

Fernandez and Gavin Gautreau were instrumental in the

success of this project.

Thank You.