
Methods of test for masonry units. Determination of flatness of faces of masonry units
出版:British Standards Institution

专家解读视频
Specimens measured using straight edge and feeler gauges.
© British Standards Institution 2013
Amendment notes:
AMD 15683 published 16 January 2006
NS EN 772-20:2000 - Identical
I.S. EN 772-20:2000 - Identical
UNI EN 772-20:2005 - Identical
SN EN 772-20:2000 - Identical
DIN EN 772-20 (2005-05) - Identical
ONORM EN 772-20:2005 - Identical
NF EN 772-20:2001 - Identical
NBN EN 772-20:2000 - Identical
UNE EN 772-20:2001 - Identical
SS EN 772-20:2000 - Identical
NEN EN 772-20:2000 - Identical