Document Archives

Concrete Masonry Units

• ID:

  47

• ESCSI:

  3220.006

• Author:

  Committee of Underwriters Laboratories, Inc.

• Publication Name:

  Standard for Safety

• Type of Publication:

  Paper

• Publisher:

  Underwriters' Laboratories, Inc.

• Dated:

  1961

• Issue/Volume:

  April was reprint of 1958

• Other ID:

• Page(s):

  5-18

• Reference List:

• Abstract:

  These Requirements cover concrete masonry units which have been shown by fire tests to be eligible for fire retardant classifications under standard fire exposure conditions as specified in the Standard for Fire Tests of Building Construction and Materials of Underwriters’ Laboratoreis, Inc. – UL 263 (ASA No. A2.1)