Methods of test for masonry units - Part 13: Determination of net and gross dry density of masonry units (except for natural stone); German version EN 772-13:2000— 5 стр.
Methods of test for masonry units - Part 3: Determination of net volume and percentage of voids of clay masonry units by hydrostatic weighing; German version EN 772-3:1998— 4 стр.
Methods of test for masonry units - Part 9: Determination of volume and percentage of voids and net volume of clay and calcium silicate masonry units by sand filling; German version EN 772-9:1998 + A1:2005— 8 стр.