Construction Supervisor License Practice Exam

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The mortar for adhered masonry veneer and glass unit masonry must conform to which ASTM standard?

ASTM C270
ASTM C240
ASTM C380
ASTM C330

The correct answer is: ASTM C270

The correct answer is ASTM C270 because this standard specifically addresses the requirements for mortar for masonry, detailing the proportions of the components in the mortar mix used for various types of masonry, including adhered veneer and unit masonry. This standard ensures that the mortar used provides the necessary strength and durability needed for masonry applications, which is crucial for the structural integrity and performance of adhered masonry veneer and glass unit masonry. The other ASTM standards listed do not pertain to the type of mortar specified in the question. ASTM C240 relates to the specifications for glass block masonry units, ASTM C380 covers testing for the bond of glass unit masonry, and ASTM C330 addresses lightweight aggregate concrete masonry units. While these standards are important within the context of masonry construction, they do not directly reference mortar requirements, making ASTM C270 the appropriate standard for adherence to mortar specifications in this scenario.