Masonry materials described below apply to all masonry and concrete work:
A. Cement:
1. Portland cement. See ASTM C 150-56.
2. Prepared masonry cement for mortar: See ASTM C 91-55T.
3. Pozzolamic materials, such as fly ash, will not be substituted for any portion of cement without the knowledge and consent of the Building Official. When used as a replacement for cement, manufacturer's recommendations will be followed and subjected to testing by an approved laboratory.
B. Aggregate:
1. Sand: Clean, hard and sharp, free from harmful materials, graded according to intended use. See ASTM C 33-56T.
2. Coarse aggregate:
a. Crushed stone or gravel: Hard strong cystalline rock, properly graded, clean and free from shale or other soft material.
b. Light weight aggregate. See ASTM C 330-53T.
C. Water: Clean and free from harmful material.
D. Lime:
1. Hydrated lime. See ASTM C 207-49.
2. Quick lime, slake thoroughly. See ASTM C 5-26.
E. Brick:
1. Face brick. See ASTM C 216-50.
2. Common brick. See ASTM C 62-50.
a. Selected hard-burned common brick may be used for facing of exterior and interior walls.
b. Salmon or soft brick may be used in interior walls when not exposed, and for backup work.
3. Fire brick. See FS-HH-B-671d.
4. Concrete brick. See ASTM C 55-52.
F. Structural Hollow Clay Tile:
1. Sound, kiln-burned units, free from defects that would impair the strength or permanence of the construction.
2. Load-bearing tile. See ASTM C 34-55.
3. Nonload bearing tile. See ASTM C 56-52.
4. Glazed or unglazed facing tile. See ASTM C 126-52T.
G. Concrete Masonry Unit: See ASTM C 129-52, ASTM C 145-52 and ASTM C 90-52. Sound and thoroughly cured.
H. Stone:
1. Rubble and cut stone: Good quality building stone.
2. Cast stone. See ACI 704-44.
I. Flue Lining: Glazed fire clay and vitrified tile, free from cracks or other defects.
J. Glass Block: See NDFU-Bldg. Code-55. (Ord. 0-71-12, 3-11-71)