Standards
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.
1.2 Concrete masonry units covered by this specification are made from lightweight or normal weight aggregates, or both.
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.