Type BI Inverted Form Deck

Section Properties (Fy=33 ksi)
Gage	Design Thickness	Weight (psf)Glv	Ip(In4)	In(In4)	Sp(In3)	Sn(In3)
22	.0295	1.61	0.1891	0.1557	0.196	0.1876
20	.0358	2.04	0.2305	0.1999	0.2458	0.2315
18	.0474	2.70	0.3061	0.2854	0.3263	0.3132
16	.0598	3.20	0.3869	0.3801	0.4104	0.401
Section properties calculated in accordance with AISI specifications

Maximum Construction Clear Spans

Slab Depth	Gage	Weight PSF	NW Concrete 145 PCF			Weight PSF	LW Concrete 110 PCF
Slab Depth	Gage	Weight PSF	1 Span	2 Span	3 Span	Weight PSF	1 Span	2 Span	3 Span
3.5”	22	37	4-7	6-2	6-2	29	5-0	6-7	6-8
	20	38	5-5	7-3	7-4	29	5-10	7-10	7-11
	18	38	6-6	8-6	8-10	30	7-1	9-2	9-7
4.0”	22	43	4-5	5-10	5-11	33	4-9	6-4	6-5
	20	44	5-1	6-10	6-11	34	5-7	7-5	7-6
	18	44	6-2	8-1	8-5	34	6-9	8-10	9-1
4.5”	22	49	4-2	5-8	5-8	38	4-7	6-1	6-2
	20	50	4-11	6-7	6-8	38	5-4	7-2	7-3
	18	50	5-11	7-9	8-0	39	6-5	8-5	8-9
5.0”	22	55	4-0	5-5	5-6	42	4-5	5-11	6-0
	20	55	4-8	6-4	6-5	43	5-2	6-11	7-0
	18	56	5-7	7-5	7-8	43	6-3	8-2	8-5
5.5”	22	61	3-11	5-3	5-4	47	4-3	5-8	5-9
	20	62	4-6	6-1	6-2	47	5-0	6-8	6-9
	18	63	5-5	7-1	7-4	48	6-0	7-10	8-2
6.0”	22	68	3-9	5-1	5-1	52	4-2	5-6	5-7
	20	68	4-4	5-11	6-0	52	4-10	6-6	6-7
	18	69	5-2	6-10	7-1	53	5-9	7-7	7-10
6.5”	22	74	3-8	4-11	5-0	56	4-0	5-5	5-5
	20	74	4-3	5-9	5-9	57	4-8	6-3	6-4
	18	75	5-0	6-8	6-10	57	5-7	7-5	7-8

Span Condition	Gage	Design Criteria	Uniform Total Load in Pounds Per Square Foot (Dead and Live)
Span Condition	Gage	Design Criteria	5’-0”	5’-6”	6’-0”	6’-6”	7’-0”	7’-6”	8’-0”	8’-6”	9’-0”
One	22	36000	101	83	70	60	51	45	39	35
		L/240	98	74	57	44	36	29	24	20
		L/180	*	*	*	59	48	39	32	26
	20	36000	128	105	89	75	65	57	50	44	39
		L/240	120	90	69	54	43	35	29	24	20
		L/180	*	*	93	73	58	47	39	32	27
	18	36000	171	142	119	101	87	76	67	59	53
		L/240	160	120	92	72	58	47	39	32	27
		L/180	*	*	123	97	77	63	52	43	36
Two	22	36000	98	81	68	58	50	43	38	34	30
		L/240	*	*	*	*	86	70	58	48	40
		L/180	*	*	*	*	*	*	77	64	54
	20	36000	122	101	84	72	62	54	47	42	37
		L/240	*	*	*	*	*	*	70	59	49
		L/180	*	*	*	*	*	*	*	*	*
	18	36000	166	137	115	98	84	74	65	57	51
		L/240	*	*	*	*	*	*	*	*	*
		L/180	*	*	*	*	*	*	*	*	*
Three or More	22	36000	123	101	85	72	62	54	48	42	38
		L/240	*	*	*	85	68	55	45	38	32
		L/180	*	*	*	*	*	73	60	50	42
	20	36000	152	126	106	90	78	67	59	52	47
		L/240	*	*	*	103	83	67	55	46	39
		L/180	*	*	*	*	*	90	74	61	52
	18	36000	208	172	144	123	106	92	81	72	64
		L/240	*	*	*	*	110	89	74	61	51
		L/180	*	*	*	*	*	*	*	*	69

18, 20, 22 Gauge