• Alignment and Depth Can be Adjusted for Better Construction
• Water Table Considerations
• Probability of Rocks Larger than 30% OD of Pipe
• Shaft Soil conditions are Necessary for Shaft Design and Location
• Poor Strength of Soil Behind the Jacking Frame Push Block May Require that the Soil be Improved with Grout
• Fines analysis is important for slurry type machines to determine slurry / water separation equipment needs