Accession Number : AD0716666
Title : Grid Technique for Measuring Ice Tunnel Deformation.
Descriptive Note : Special rept.,
Corporate Author : SNOW ICE AND PERMAFROST RESEARCH ESTABLISHMENT WILMETTE ILL
Personal Author(s) : Butkovich,T. R. ; Landauer,J. K.
Report Date : 26 JAN 1959
Pagination or Media Count : 8
Abstract : A new method for measuring deformation and closure of an ice tunnel was devised. This technique requires the installation of grid lines on a smooth section of tunnel wall. Although this necessitates the work of smoothing the wall, it has the significant advantage over other methods of making the movement readily visible. (Author)
Descriptors : (*ICE, DEFORMATION), (*UNDERGROUND STRUCTURES, ICE), PERIODIC VARIATIONS, MEASUREMENT, SHEAR STRESSES, STATISTICAL DATA
Subject Categories : Snow, Ice and Permafrost
Distribution Statement : APPROVED FOR PUBLIC RELEASE