American Standard Building Code Requirements for Masonry

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. O {since national standards are revised at frequent intervals, references should be made to the latest edi In Incorporating these standards in a local code.(solid Masonry Unit de from Clay or Shale) astm C 62 - 50.