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The number of concrete blocks in a metre will depend on the type of concrete block being used. Concrete blocks come in different sizes in different countries and every has variations in width, height and thickness based on the standard module size, such as 1/2 or 3/4 variants of each dimension.
Note that each block has an actual size and a nominal size that accounts for a typical mortar joint. Usually the nominal size is a round number giving easier calculations and construction dimensions. (The nominal depth is not usually the depth of the individual wall, as there is no mortar layer needed.)
The standard modules for some countries are:
UK
Block dimensions 440mm Long × 215mm High × 190mm Deep (~17 1/3" L × 8 7/15" H × 7 1/2" D)
Nominal dimensions 450mm Long x 225mm High x 200mm Deep (~17 5/7" L × 8 6/7" H × 7 7/8" D)
Number per lineal metre: 2.22
Number per square metre: 9.88
Also available as a standard module:
Block dimensions: 390mm Long x 190mm High x 190mm Deep
Nominal dimensions: 400mm Long x 200mm High x 200mm Deep
Number per lineal metre: 2.5
Number per square metre: 12.5
USA
Block dimensions: 390mm Long × 190mm High × 190mm Deep(~15 5/8" L × 7 5/8" H × 7 5/8" D)
Nominal dimensions: 400mm Long x 200mm High x 200mm Deep (~16"L × 8"H × 8"D)
Number per lineal metre: 2.5
Number per square metre: 12.5
Australia and New Zealand
Block dimensions: 390mm Long x 190mm High x 190mm Deep
Nominal dimensions: 400mm Long x 200mm High x 200mm Deep
Number
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