STEEL ROOF DECKS

All roof decks are available with either a galvanized finish or prime painted to inhibit rust while in transit (primer is not a finish coat). We provide the following roof decks in stock lengths or custom cut.

Type B Roof Deck (Wide Rib)

----------------------Width 30" or  36" -------------------------

Deck Type	Span Condition	Design Thickness  Inches	Uniform Total (Dead & Live) Load in Pounds per Square Foot Span Length - c. to c. Joists or Purlins (Ft. - In.)
			4'-0"	4'-6"	5'-0"	5'-6"	6'-0"	6'-6"	7'-0"	7'-6"	8'-0"	8'-6"	9'-0"	9'6"	10'-0"
WR 22	Simple	0.0295			90	70	56	46
WR 20		0.0358			113	88	70	57	48	40
WR 18		0.0474			159	122	96	77	64	54	46	40
WR 22	2	0.0295			96	79	67	57	49	43
WR 20		0.0358			123	102	86	73	63	55	48	43
WR 18		0.0474			164	136	114	98	84	73	64	57	51	46	41
WR 22	3 or more	0.0295			119	99	83	71	61	53	47	31	36
WR 20		0.0358			153	127	107	91	79	68	58	50	43
WR 18		0.0474			204	169	142	121	105	91	79	67	58	51

** B-Acoustical Roof Deck is also available, fluted or cellular (special order).

Type F Roof Deck (Intermediate Rib)

----------------------------Width 36"---------------------------

Deck Type	Span Condition	Design Thickness  Inches	Uniform Total (Dead & Live) Load in Pounds per Square Foot Span Length - c. to c. Joists or Purlins (Ft. - In.)
			4'-0"	4'-6"	5'-0"	5'-6"	6'-0"	6'-6"	7'-0"	7'-6"	8'-0"	8'-6"
IR 22	Simple	0.0295	84	66	54	44
IR 20		0.0358	104	82	67	55	46
IR 18		0.0474	142	112	91	75	63	54	46	40
IR 22	2	0.0295	90	71	58	48	40
IR 20		0.0358	110	87	70	58	49	41
IR 18		0.0474	145	114	93	77	64	55	47	41
IR 22	3 or more	0.0295	113	89	72	60	50	43
IR 20		0.0358	137	108	88	72	61	52	45
IR 18		0.0474	181	143	116	96	81	69	59	52	45	40

 

Type A Roof Deck (Narrow Rib)

------------------------------Width 30"-------------------------

Deck Type	Span Condition	Design Thickness  Inches	Uniform Total (Dead & Live) Load in Pounds per Square Foot Span Length - c. to c. Joists or Purlins (Ft. - In.)
			4'-0"	4'-6"	5'-0"	5'-6"	6'-0"	6'-6"	7'-0"	7'-6"
NR 22	Simple	0.0295	73	58	47
NR 20		0.0358	91	72	58	48	40
NR 18		0.0474	125	99	80	66	55	47
NR 22	2	0.0295	80	63	51	42
NR 20		0.0358	97	76	62	51	43
NR 18		0.0474	128	101	82	68	57	48	42
NR 22	3 or more	0.0295	100	79	64	53	44
NR 20		0.0358	121	96	77	64	54	46
NR 18		0.0474	160	126	102	85	71	61	52	45

 

Type N Roof Deck (Deep Rib)

--------------------------- Width 24" ----------------------------

Deck Type	Span Condition	Design Thickness  Inches	Uniform Total (Dead & Live) Load in Pounds per Square Foot Span Length - c. to c. Joists or Purlins (Ft. - In.)
			9'-0"	9'-6"	10'-0"	10'-6"	11'-0"	11'-6"	12'-0"	12'-6"	13'-0"	13'-6"	14'-0"	14'-6"
3DR 22	Simple	0.0295	52	47	42
3DR 20		0.0358	65	58	53	48	43	40
3DR 18		0.0474	89	80	72	66	60	55	49	45	41
3DR 22	2	0.0295	59	53	48	44	40
3DR 20		0.0358	72	65	59	53	48	44	41
3DR 18		0.0474	96	86	78	70	64	59	54	50	46	43	40
3DR 22	3 or more	0.0295	74	66	60	54	50	45	42
3DR 20		0.0358	90	81	73	66	60	55	51	47	43	40
3DR 18		0.0474	120	107	97	88	80	73	67	62	57	53	50	46

**N-Acoustical Roof Deck also available, fluted or cellular (special order).

*See SDI member manufacturers' literature for section properties.

*Load tables for roof decks are generic, based on the Steel Deck Institute generic steel roof deck catalog, copyright 1995 SDI Design Manual No. 29, printed with permission.