13-136-040 Exceptions, supplement, additions and corrections.

   Exceptions to U.S.A.S. A59.1 – 1968. The provisions of U.S.A.S. A59.1 – 1968 shall be subject to the following exceptions for purposes of this Code:

   (a)   Section 1.2, U.S.A.S. A59.1 – 1968, shall be supplemented by the following additional requirement:

   These specifications shall govern, whenever applicable, the design and fabrication of precast reinforced gypsum concrete units.

   (b)   The provisions of U.S.A.S. A59.1 – 1968 shall be supplemented by the following additional requirements:

   Limitations of Use. Reinforced gypsum concrete shall not be used:

      (i)   Where exposed directly to weather, or where subject to frequent or continuous wetting, or where exposed to detrimental moisture accumulation within the gypsum concrete.

      (ii)   Where exposed to intermittent or extended high temperatures such as in slabs directly exposed to radiant heat over furnace breechings, etc;

      (iii)   To support heavy concentrated loads such as large fan bases, and cooling towers, which should be supported independently of the gypsum roof deck.

   (c)   Section 5.1, U.S.A.S. A59.1 – 1968, is corrected for purposes of this Code in the following manner:

   The note with the asterisk shall refer to Section 3.2.2, U.S.A.S. A59.1 – 1968, and not Section 2.2 as presently shown thereon.

   (d)   Section 6.3, U.S.A.S. A59.1 – 1968, is corrected for purposes of this Code in the following manner:

   The words “except in the suspension system, where it shall not be less than 3 inches” in the first sentence shall not apply for purposes of this Code. At the end of this section the words “40 p.s.i.” shall be “40 p.s.f.” for purposes of this Code.

   The “Note: Formboards for suspension system not described herein” shall not apply for purposes of this Code.

   (e)   Section 6.4, U.S.A.S. A59.1 – 1968, is corrected for purposes of this Code as follows:

   The words “and (3) shall not exceed eight feet for the suspension system” shall not apply for purposes of this Code.

   (f)   Section 6.5, U.S.A.S. A59.1 – 1968, shall not apply for purposes of this Code.

   (g)   The reference in the note in Section 11.4 U.S.A.S. A59.1 – 1968, to Appendix A 7.5 shall be changed for purposes of this Code to refer to A7.1.5.

(Prior code § 73-2.1)