Notes
Outline
Evaluation of Stump Strength for Temporary Road Design
Séamus Parker
FERIC Western Division
Background
Historical use of stumps and logs to retain road fills
BC Forest Practices Code encourages geotechnical design of road fill retention structures
Design requires knowledge of engineering properties of stumps
Project Objective
Project Cooperators
Methodology
Crawler tractor block purchase system to apply pulling force
Monitor applied force
Monitor stump displacement and rotation
Site Description
Nanaimo Lakes (South Vancouver Island)
Logged two years previously
Western aspect
Elevation 580 m to 630 m
Slope 30% to 45%
Soil well drained gravely sand, some cobbles with trace silt
Soil depth >2m, root depth 1m
Block Purchase System
Slide 8
Slide 9
Test Stump Instrumentation
Slide 11
Pulling Force vs Stump Displacement
Summary of Results
Failure Type
Test #1- Pull #5
Conclusions