In 2018/19 ZALIG completed a geotechnical site investigation & report for a proposed Altalink Towers at Amaco Empress, Ware Junction, Miniburn and Hairy hill. Work was completed in an energized substation which required the supervision of a qualified ALTALINK fieldwork representative in order to monitor safe limits of approach.
This project was carried out at Altalink/AWSS Towers (Amaco Empress, Ware Junction, Miniburn County and Hairy Hill, Alberta.
The purpose of the site investigation was to address the following issues:
Ground surface elevation at each borehole location
Obtaining soil samples (as per ASTM D1587) at 0.75 m interval
Pocket penetrometers readings on soil samples
Standard Penetration Tests (SPT) at 1.5 m intervals
Groundwater and sloughing level at completion of field drilling
Installation of standpipe piezometer to monitor stabilized groundwater level
Laboratory testing to permit the development of geotechnical design parameters
Development of design parameters of earthwork
Recommendations for cement type in concrete
• On-site drilling of four boreholes to depths up to 15.0m or refusal were performed.
Laboratory materials testing included:
Moisture Content ASTM D2216
Consolidation Test ASTM D2435-90
Sulphate Analysis ASTM C1580
Atterberg Limits ASTM D4318
