Alaska's horizontal drain applications address both standard slope groundwater and the meltwater permafrost thaw actively generates, a combined water management challenge AKDOT&PF corridors face that has no direct equivalent in the lower 48.
GSI treats this as one of several Steep Slope Stability Issues issues the state's infrastructure owners regularly face.
Horizontal drains for Alaska's slopes are designed to manage both standard groundwater infiltration and the additional meltwater permafrost thaw continues generating over time. This draws directly on GSI's horizontal drains work.
Reducing pore water pressure through horizontal drains in Alaska accounts for a water source — permafrost meltwater — that continues evolving well after initial installation. GSI's soil nailing capability supports this step.
GSI pairs horizontal drains with the Soil Nail Launcher™ on Alaska slopes where permafrost-related saturation exceeds what drainage alone can resolve. This is one application of GSI's broader landslide emergency response expertise.
GSI often considers engineers alongside this work when scoping Alaska projects.
Engineered for Alaska's conditions. GSI's Alaska horizontal drains manage an evolving water source — ongoing permafrost meltwater — unlike the more static groundwater conditions drainage design addresses elsewhere. GSI's general contractors and our case studies experience backs this approach.
Design/build delivery. Design and construction stay under one roof — cutting out the delays that separate design from installation.
AKDOT&PF specification compliance. Engineering and construction documentation meets applicable DOT requirements from the earliest project submittal.
GSI's engineers are ready to assess horizontal drains conditions at your Alaska site.