1. 771–3, Specification for masonry units;En;Br. Stand.,2011
2. 4455.1, Masonry units, pavers, flags and segmental retaining wall units Part 1: Masonry units;AS NZS;Stand. Aust.,2008
3. C55, Standard specification for concrete building brick;ASTM;ASTM Int.,2017
4. C90, Standard specification for loadbearing concrete masonry units;ASTM;ASTM Int.,2016
5. C129, Standard specification for nonloadbearing concrete masonry Units;ASTM;ASTM Int.,2012