Item Number: 6816grhwor
A. Load bearing smooth face (light, medium, normal) weight concrete masonry units shall comply with ASTM C-90-96, UBC-21-4 (Type I or Type II). Provide required shapes such as corner, end units, radius bases, bond beams, lintels, etc. Provide units open one or both ends, as required. Maximum linear shrinkage shall be .065% from standard oven dry condition. Concrete masonry units shall have a minimum net compressive strength of 1900 psi.