What is the standard size of a modular clay building brick including mortar joint thickness?
A19 cm x 9 cm x 9 cm
B20 cm x 10 cm x 10 cm
C22.5 cm x 11.25 cm x 7.5 cm
D18 cm x 9 cm x 9 cm
Explanation
The standard size of a modular brick without mortar is 19 cm x 9 cm x 9 cm. With nominal mortar joint thickness (10 mm), the modular dimensions become 20 cm x 10 cm x 10 cm.

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