Standards
This standard specifies:
a a) requirements for the manufacturing, alloying and testing of gold articles of 23, 22, 20, 18, 15, 14,12, 10 and 9 kt gold;
b b) requirements for findings and solders to be used in the manufacture of gold articles;
c c) methods for assaying gold, alloyed gold, solder, findings and gold articles; and
d d) requirements for marking and labelling of imported gold articles.
NNOTE It does not specify requirements for design of gold articles and does not apply to gold articles intended for industrial purposes such as dentistry, electronics, official coins, gold bars and other such uses.
This standard gives recommendations on the serviceability of buildings against vibrations. It covers three recipients of vibrations: a) human occupancy in buildings and on pedestrian bridges; b) the contents of the building; c) the structure of the building. It applies to buildings, pedestrian bridges and walkways found within buildings or connecting them and does not include bridges that carry vehicular traffic, nor the design of foundations or supporting structures of machinery.
This standard specifies performance requirements for hollow load-bearing concrete masonry units made from Portland cement, water and mineral aggregates with or without the inclusion of other materials. It covers three weight classifications of the concrete masonry units: (a) normal weight; (b) medium weight; and (c) lightweight.
This standard specifies requirements for hollow non-load-bearing concrete masonry units made from portland cement, water and mineral aggregates with or without the inclusion of other materials. It covers three weight classifications of the concrete masonry units: (a) Normal weight; (b) Medium weight; and (c) Light weight. It also covers the sampling and testing of hollow non-load-bearing concrete masonry units for compressive strength, absorption, weight, moisture content and dimensions. It does not cover blocks intended solely for decorative purposes.