15-12-120 Maximum size of doors and shutters.

   Openings required to be protected by fire doors or shutters shall not exceed the heights, widths and areas established in Table 15-12-120. (See Table 15-12-120.)

(Prior code § 65-5.5)

Table 15-12-120
Maximum Sizes of Fire Doors and Shutters

Type of Door	Class of Door	Maximum Size of Opening Not to Exceed
		Area Sq. Ft.	Height Ft.	Width Ft.
Hollow metal, swinging, in pairs	A-B-C-D(1)-E(1)		10	8
Hollow metal, swinging, in pairs	D(2)-E(2)		10	6
Hollow metal, swinging, single	A-B-C-D-E		10	4
Hollow metal, sliding	B-C		8	8
Metal-clad, paneled, swinging, in pairs	B-C-D(1)-E(1)		8	8
Metal-clad, paneled, swinging, in pairs	D(2)-E(2)		8	6
Metal-clad, paneled, swinging, single	B-C-D-E		8	4
Sheet metal, sliding, single or in pairs	A-B-C-D(1)-E(1)	120	12	12
Sheet metal, swinging, in pairs	A-B-C-D(1)-E(1)		12	10
Sheet metal, swinging, in pairs	D(2)-E(2)		10	6
Sheet metal, swinging, single	A-B-C-D(1)-E(1)		12	6
Sheet metal, swinging, single	D(2)-E(2)		10	4
Steel, rolling or lift-up type	A-B-C-D(1)-E(1)	120*	12*	12*
Tin-clad, 3-ply, sliding	A	120	12	12
Tin-clad, 3-ply, swinging, in pairs	A		12	10
Tin-clad, 3-ply, swinging, single	A		12	6
Tin-clad, 2-ply, counter-balanced	B		10	8
Tin-clad, 2-ply, sliding, single	B-C-D(1)-E(1)		10	10
Tin-clad, 2-ply, swinging, in pairs	D(1)-E(1)		10	10
Tin-clad, 2-ply, swinging, in pairs	D(2)-E(2)		10	6
Tin-clad, 2-ply, swinging, single	B-C-D(1)-E(1)		10	6
Tin-clad, 2-ply, swinging, single	D(2)-E(2)		10	4
NOTES:    (1) Class D and E doors, other than doors leading to fire escapes.    (2) Class D and E doors leading to fire escapes.
* Openings not exceeding 24 feet in width, 24 feet in height and 350 square feet in area shall be permitted when oversize openings are required for passage of motor vehicles, railroad cars and similar uses.