SECTION 222—MASONRY UNITS
222.01 Description
These specifications cover masonry units manufactured of regular or lightweight concrete or brick made from clay or shale in a plant specifically designed for such a purpose.
222.02 Detail Requirements
a.Wall Units:
1.Hollow load-bearing units shall conform to ASTM C90, Grade N-I.
2.Hollow non-load bearing units shall conform to ASTM C129, T ype I.
3.Solid load-bearing units shall conform to ASTM C145, Grade N-I.
4.Building bricks shall conform to either:
a.ASTM C62 Grade SW , or
b.ASTM C55, except that the average compressive strength of 5 bricks shall be a minimum 3000 psi and no individual brick shall be less than 2500 psi.
b.Catch Basins and Manholes:
1.Masonry blocks shall conform to ASTM C139.
2.Bricks shall conform to either:
a.ASTM C32, Grade MS, or
b.ASTM C55, except that the average compressive strength of 5 bricks shall be a minimum 3000 psi and no individual brick shall be less than 2500 psi.
c.Sewer Bricks shall conform to ASTM C32, Grade SM. SECTION 223—STEEL REINFORCEMENT
223.01 Description
These specifications cover steel items designed to give added flexural strength to hydraulic cement concrete or to control and reduce cracking in such applications.
223.02 Detail Requirements
a.Reinforcement:
1.Deformed bars shall conform to ASTM A615, Grade 40 or 60. Longitudinal bars for continuous reinforced hydraulic cement concrete pavement shall be Grade 60. 222.01
Referenced in this section
Masonry Units in other states
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Source: Road and Bridge Specifications, 2020 Edition. Pages 248–248 of 1,065. View official source ↗