Methods of test for masonry units - Part 9: Determination of volume of and percentage of voids and net volume of calcium silicate masonry units by sand filling; German version EN 772-9:1998— 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.
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.
