NASCLA Commercial General Building Contractor Exam — All Questions
AllProcurement & Contracting RequirementsGeneral RequirementsSite ConstructionConcreteMetalsMechanical & PlumbingWood, Plastics & CompositesThermal & Moisture ProtectionFinishesMasonryOpenings (Doors, Windows & Glazing)Electrical
1 questions
Masonry
Among the common ASTM C270 mortar types, which is the highest-strength mortar, typically used where greater compressive and lateral strength is required (such as below grade)?
- a.Type N
- b.Type M✓
- c.Type K
- d.Type O
Of the standard mortar types (M, S, N, O), Type M has the highest compressive strength and is used where high strength is needed, such as below-grade or load-bearing foundation masonry. Type N is a common general-purpose mortar; Type O is a low-strength interior mortar.Masonry mortar types (ASTM C270)