Which type of masonry cement is typically used for foundation walls and isolated piers?

Type S masonry cement is specifically designed to provide excellent strength and durability, making it ideally suited for use in foundation walls and isolated piers. The strength properties of Type S cement offer a higher compressive strength compared to the other types, which is crucial for structural applications that must withstand significant loads and pressure, such as those found in foundations.

Foundations and piers require strong bonding capabilities to support the weight of structures above them and resist lateral forces, such as those exerted by soil. Type S cement’s composition allows it to achieve a strength of 1800 psi, which is suitable for these demanding applications.

In contrast, Type N, which is a medium-strength cement, is better suited for general above-grade masonry use; Type M is used in applications where high strength is required but is typically not necessary for most foundation work; and Type O, with its low strength, is mainly used for non-load bearing applications. Thus, Type S is the optimal choice for foundation walls and isolated piers.