TM 5-852-3, TECHNICAL MANUAL, ARCTIC AND SUBARCTIC CONSTRUCTION-RUNWAY AND ROAD DESIGN (29 OCT 1954)

TM 5-852-3, TECHNICAL MANUAL, ARCTIC AND SUBARCTIC CONSTRUCTION-RUNWAY AND ROAD DESIGN (29 OCT 1954)., The construction of satisfactory roads and runways in permafrost areas is normally more difficult than in temperate regions because the imperviousness of the underlying permafrost tends to produce poor soil drainage conditions, and because disturbance of the natural surface may set in motion adjustments in thermal regime, drainage, and slope stability which may have serious and progressive consequences.