Final answer:
Type S Mortar has high compression strength and is very good for below grade use, foundations, sewers, retention walls, and maintains strength in severe frost, wind, and soil pressure.
Step-by-step explanation:
Type S Mortar has high compression strength and is very good for below grade use, foundations, sewers, retention walls. It also maintains strength in severe frost, wind, and soil pressure. Type S Mortar is a specific type of mortar that contains a higher proportion of Portland cement compared to other types. This gives it a higher compressive strength, making it suitable for projects that require durability and resistance to severe conditions.