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BLOCK SPECIFICATIONS
  Suggested Solite® and Kenlite® Concrete Masonry Units Specification
 
SECTION 04200 
PART 2. PRODUCTS
  Concrete Masonry Units.  Load Bearing, 100% Solite® or Kenlite® Lightweight Aggregate Concrete Masonry Units shall conform to the requirements of ASTM C‑90.

  The producer of the concrete masonry units shall furnish certification from an independent testing laboratory that all aggregate used in the manufacture of the masonry units shall be from a single source conforming to ASTM C331, "Lightweight Aggregates for Concrete Masonry Units", and is 100% Solite®, Kenlite® or rotary kiln produced expanded shale.  The use of scoria, tuff, pumice, slag, coal derived aggregates (cinders, bottom ash, fly ash) or similar waste products shall not be allowed. Blending of screenings or any other deleterious substance which impairs the fire ratings or insulation values is prohibited. All units shall be free of organic impurities that will cause rusting, staining or popouts and shall contain no combustible matter.

  The dry weight of various sizes of 2 core Solite® and Kenlite® Concrete Masonry Units shall not exceed the weight shown in table below when tested in accordance with ASTM C‑140:

      4 x 8 x 16 16 pounds   4 x 8 x 16 75% Solid 22 pounds
      6 x 8 x 16 24 pounds   6 x 8 x 16 75% Solid 29 pounds
      8 x 8 x 16 26 pounds   8 x 8 x 16 75% Solid 38 pounds
    12 x 8 x 16 39 pounds 12 x 8 x 16 75% Solid 58 pounds
 

Fire Ratings: The producer of the concrete masonry units shall furnish certification from an independent testing laboratory confirming that all 8" or larger masonry units meet all of the UL® 618 requirements for two (2) hours or better (as required), referencing full scale fire test reports (ASTM E119).

  Thermal Resistance: The producer of the concrete masonry units shall furnish certification from an independent testing laboratory confirming by tests conducted in accordance with ASTM C236, "Standard Test Method of Steady State Thermal Performance of Building Assemblies by Means of a Guarded Hot Box", that the thermal resistance (R) value of an 8" concrete masonry unit shall be a minimum of  2.27 (BTU/°F•ft2•h).

  Sound Transmission Class:  The concrete masonry unit manufacturer shall provide certification that 8" hollow 100% lightweight concrete masonry units have a sound transmission class rating not less than 45 (ASTM E90).

  Certification and Testing:  The producer of the masonry units shall submit certifications of compliance with ASTM C90, C331, C236, E90 and UL618, 60 days prior to any jobsite delivery. Field sampling of concrete masonry units shall be conducted during construction by an independent testing laboratory according to the requirements of ASTM C‑140.