BGS Civils is a suite of national maps of engineering properties based on geological data and the digital 1:50 000-scale geological map — BGS Geology 50K.
This theme classifies geological deposits at surface by their likely bulking factor. Bulking occurs when a geological material is excavated and the volume of disturbed material is different to the volume of the excavated hole.
For more information, including how to licence the data or access free versions, please visit our BGS Civils: bulking volume webpage.
