MORTAR SPECIFICATIONS
| Unit Masonry C270 includes the following mortars: |
| Prepared Masonry Cements (ASTM C91) Type N, S,
or M One 70-80 lb. bag masonry cement (ASTM C91, Type 1) plus 3 cu. ft. sand (ASTM C144) |
| Portland Cement - Lime Mortars Type N (750 psi) One 94 lb. bag portland cement (ASTM C150), One 50 lb. bag hydrated lime (ASTM C207), plus six cubic feet sand (ASTM C144) |
| Type S (1800 psi) One 94 lb. bag portland cement (ASTM C150), One 50 lb. bag hydrated lime (ASTM C207), plus nine cubic feet sand (ASTM C144), OR One 94 lb. bag portland cement (ASTM C150), Two 70 lb. bags masonry cement type 1 (ASTM C91) plus nine cubic feet sand (ASTM C144). |
| Type M (2,500 psi) Two 94 lb. bag portland cement (ASTM C150), 25 lb. hydrated lime (ASTM C207), plus six cubic feet sand (ASTM C144), OR One 94 lb. bag portland cement (ASTM C150), One 70 lb. bags masonry cement type 1 (ASTM C91) plus six cubic feet sand (ASTM C144). |
| Type O (350 psi) One 94 lb. bag portland cement (ASTM C150), Two 50 lb. bags hydrated lime (ASTM C207), plus nine cubic feet sand (ASTM C144) |