TY JOUR TI Screw pile KW screw pile KW low production costs KW the foundations on piles KW building envelope JO Actual directions of scientific researches of the XXI century: theory and practice AU Sakhnov, A.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov