10A NCAC 14J .1513       WALLS

Walls and partitions shall be made of either reinforced concrete or masonry or the following materials:

(1)           Steel grating of either tool‑resisting steel or open hearth steel as specified in the plans:

(a)           Tool‑resisting steel grating shall meet the following construction requirements:

(i)            Seven‑eighths of an inch or one inch diameter vertical double‑ribbed round bars spaced not over four inches on center, passing through and interlocking at each intersection with 3/8 inch x 2‑1/4 inches or 3/8 inch x 2‑1/2 inches tool‑resisting flat bars spaced on 12 inch centers for 7/8 inch bars and on 18 inch centers for one inch bars;

(ii)           Vertical framing bars shall be 3/8 inch x 2‑1/4 inches or 3/8 inch x 2‑1/2 inches tool‑resisting flat bars.

(b)           Open hearth steel grating shall meet the following construction requirements:

(i)            Seven‑eighths of an inch or one inch diameter vertical double‑ribbed round bars spaced not over four inches on center, passing through and interlocking at each intersection with 3/8 inch x 2‑1/4 inches or 3/8 inch x 2‑1/2 inches horizontal flat bars spaced on 12 inch centers for 7/8 inch bars and on 18 inch centers for one inch bars;

(ii)           Vertical framing bars shall be 3/8 inch x 2‑1/4 inches or 3/8 inch x 2‑1/2 inches open hearth flat bars.

(2)           Steel plate used in a wall or ceiling shall meet the following construction requirements:

(a)           not less than 3/16 inch open hearth steel, or

(b)           not less than 1/4 inch tool‑resisting steel.

History Note:        Authority G.S. 153A‑220; 153A‑221;

Eff. June 1, 1990;

Pursuant to G.S. 150B-21.3A, rule is necessary without substantive public interest Eff. January 5, 2016.