Type “BI” Form Deck (Normal Weight Concrete – 145 PCF)

Type “BI” inverted form deck is used when the spans and loads exceed the capability of standard and heavy-duty form decks.

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Description

145 PCF Type “BI” Form Deck for Normal Weight Concrete

Type “BI” inverted form deck is used when the spans and loads exceed the capability of standard and heavy duty form decks.

Section Properties and Flexural Resistance (Fy = 40 ksi)

GageDesign ThicknessWeight (psf)As(In2)Ip(In4)In(In4) Sp(In3)Sn(In3)Allowable Moment Mp/Ω inch-lbsAllowable Moment Mn/Ω inch-lbsAllowable Shear Vn/Ω lbs
220.02951.610.4850.18330.15000.17960.1744430041772243
200.03582.040.5880.22670.19330.23090.2228553353372714
180.04742.700.7780.30000.28330.31470.0307754072703572
160.0598 3.200.9820.38000.38000.39570.3900947793404479

Notes: 1. All section properties and strengths are reported per foot of panel width. 2. All section properties and ASD flexural strengths are calculated in accordance with ANSI/SDI C-2011, Section 2.4.A.1; p = Property in positive bending; n = Property in negative bending. 3. Moments of Inertia are calculated at 0.60Fy.

 

Allowable Superimposed Load (ASD)

Clear Span (ft. – in.)

Slab ThicknessGage5’-0”5’-6”6’-0”6’-6”7’-0”7’-6”8’-0”8’-6”9’-0”9’-6”10’-0”10’-6”11’-0”
3-1/2”
(t=2.00)
36 PSF
223783702542131801531311139885746557
3-1/2”
(t=2.00)
36 PSF
20400371306257218186160139 121106938272
3-1/2”
(t=2.00)
36 PSF
18400360308 258219 187161140122107948273
3-1/2”
(t=2.00)
36 PSF
16400390298 250212181156135117103907970
4”
(t=2.50)
44 PSF
22400400322270228194167144125109958373
4”
(t=2.50)
44 PSF
2040040038832627723720417715413511910592
4”
(t=2.50)
44 PSF
1840040039232927923920617915613712010693
4”
(t=2.50)
44 PSF
1640040038031927123220017315113211610290
4-1/2”
(t=3.00)
50 PSF
22400400395331280239206178 15513511810491
4-1/2”
(t=3.00)
50 PSF
20400400400400340292252219 191168148130116
4-1/2”
(t=3.00)
50 PSF
18400400400400345295 255222 194170150132117
4-1/2”
(t=3.00)
50 PSF
16400400400395335 287248215188165145128113
5”
(t=3.50)
56 PSF
22400400400395335286246213186162 142125110
5”
(t=3.50)
56 PSF
20400400400400400349301262229201 178157140
5”
(t=3.50)
56 PSF
18400400400400400354 306266233205181160142
5”
(t=3.50)
56 PSF
16400400400400400345298260227199176156138
5-1/2”
(t=4.00)
62 PSF
22400400400400390334288250218190167147130
5-1/2”
(t=4.00)
62 PSF
20400400400400400400352306268236209185164
5-1/2”
(t=4.00)
62 PSF
18400400400400400400359312274241213189168
5-1/2”
(t=4.00)
62 PSF
16400400400400400400350305267235208 184163
6”
(t=4.50)
68 PSF
22400400400400400382330286250219193170150
6”
(t=4.50)
68 PSF
20400400400400400 400 400352308271240213189
6”
(t=4.50)
68 PSF
18400400400400400 400 400359315277245218194
6”
(t=4.50)
68 PSF
16400400400400400 400 400352 308271240213190

Notes: 1. All construction load spans are calculated using loads and load combinations in accordance with ANSI/SDI C-2011, Section 2.4.A. The 20 psf uniform load is the minimum required construction load. Specific construction operations may require greater construction loads. 2. Bending Moment and Deflection formulae are in accordance with ANSI/SDI C-2011, Appendix A

 

Construction Span Table (Fy = 40ksi) – 20 psf Construction Load

Normal Weight Concrete (145 pcf)

Total Slab DepthGage1 Span SDI Maximum Unshored Clear Span2 Span SDI Maximum Unshored Clear Span3 Span SDI Maximum Unshored Clear SpanCantilever Span
3-1/2”
(t=2.00)
36 PSF
225’-8”6’-8”6’-8”1’-11”
3-1/2”
(t=2.00)
36 PSF
206’-9”7’-11”8’-0”2’-4”
3-1/2”
(t=2.00)
36 PSF
188’-49’-4”9’-7”3’-0”
3-1/2”
(t=2.00)
36 PSF
169’-9”10’-7”10’-11”3’-7”
4”
(t=2.50)
44 PSF
225’-4”6’-3”6’-4”1’-11”
4”
(t=2.50)
44 PSF
206’-4”7’-5”7’-6”2’-3”
4”
(t=2.50)
44 PSF
187’-10”8’-8”9’-0”2’-10”
4”
(t=2.50)
44 PSF
169’-1”9’-10”10’-2”3’-5”
4-1/2”
(t=3.00)
50 PSF
225’-2”6’-0”6’-1”1’-9”
4-1/2”
(t=3.00)
50 PSF
206’-1”7’-2”7’-2”2’-2”
4-1/2”
(t=3.00)
50 PSF
187’-6”8’-4”8’-7”2’-9”
4-1/2”
(t=3.00)
50 PSF
168’-8”9’-5”9’-9”3’-4”
5”
(t=3.50)
56 PSF
225’-0”5’-10”5’-10”1’-9”
5”
(t=3.50)
56 PSF
205’-10”6’-10”6’-11”2’-1”
5”
(t=3.50)
56 PSF
187’-2”8’-0”8’-32’-8”
5”
(t=3.50)
56 PSF
168’-3”9’-1”9’-4”3’-3”
5-1/2”
(t=4.00)
62 PSF
224’-10”5’-7”5’-8”1’-9”
5-1/2”
(t=4.00)
62 PSF
205’-8”6’-7”6’-8”2’-1”
5-1/2”
(t=4.00)
62 PSF
186’-11”7’-8”7’-11”2’-7”
5-1/2”
(t=4.00)
62 PSF
168’-0”8’-9”9’-0”3’-2”
6”
(t=4.50)
68 PSF
224’-8”5’-5”5’-6”1’-8”
6”
(t=4.50)
68 PSF
205’-6”6’-4”6’-5”2’-0”
6”
(t=4.50)
68 PSF
186’-8”7’-5”7’-8”2’-7”
6”
(t=4.50)
68 PSF
167’-8”8’-5”8’-8”3’-1”
7”
(t=5.50)
80 PSF
224’-5”5’-2”5’-2”1’-7”
7”
(t=5.50)
80 PSF
205’-2”6’-0”6’-1”1’-11”
7”
(t=5.50)
80 PSF
186’-3”7’-0”7’-2”2’-5”
7”
(t=5.50)
80 PSF
167’-2”7’-11”8’-2”2’-11”

 

Construction Span Table (Fy = 40ksi) – 20 psf Construction Load

Lightweight Concrete (115 pcf)

Total Slab DepthGage1 Span SDI Maximum Unshored Clear Span2 Span SDI Maximum Unshored Clear Span3 Span SDI Maximum Unshored Clear SpanCantilever Span SDI Maximum Unshored Clear Span
3-1/2”
(t=2.00)
30 PSF
226’-0”7’-1”7’-1”1’-11”
3-1/2”
(t=2.00)
30 PSF
207’-2”8’-5”8’-5”2’-5”
3-1/2”
(t=2.00)
30 PSF
188’-11”9’-10”10’-2”3’-1”
3-1/2”
(t=2.00)
30 PSF
1610’-4”11’-2”11’-6”3’-9”
4”
(t=2.50)
34 PSF
225’-9”6’-10”6’-10”1’-11”
4”
(t=2.50)
34 PSF
206’-11”8’-1”8’-2”2’-4”
4”
(t=2.50)
34 PSF
188’-6”9’-6”9’-10”3’-0”
4”
(t=2.50)
34 PSF
169’-11”10’-9”11’-1”3’-8”
4-1/2”
(t=3.00)
39 PSF
225’-7”6’-6”6’-7”1’-10”
4-1/2”
(t=3.00)
39 PSF
206’-7”7’-9”7’-9”2’-3”
4-1/2”
(t=3.00)
39 PSF
188’-2”9’-1”9’-4”2’-11”
4-1/2”
(t=3.00)
39 PSF
169’-5”10’-3”10’-7”3’-7”
5”
(t=3.50)
43 PSF
225’-5”6’-4”6’-4” 1’-11”
5”
(t=3.50)
43 PSF
206’-5”7’-6”7’-6”2’-4”
5”
(t=3.50)
43 PSF
187’-10”8’-9”9’-1”3’-0”
5”
(t=3.50)
43 PSF
169’-2”9’-11”10’-3”3’-6”
5-1/2”
(t=4.00)
44 PSF
225’-3”6’-1”6’-2”1’-10”
5-1/2”
(t=4.00)
44 PSF
206’-2”7’-3” 7’-3”2’-2”
5-1/2”
(t=4.00)
44 PSF
187’-7”8’-5”8’-9”2’-10”
5-1/2”
(t=4.00)
44 PSF
168’-9”9’-7”9’-11”3’-4”
6”
(t=4.50)
52 PSF
225’-1”5’-11”6’-0”1’-9”
6”
(t=4.50)
52 PSF
206’-0”7’-0"7’-1”2’-2”
6”
(t=4.50)
52 PSF
187’-4”8’-2”8’-6”2’-9”
6”
(t=4.50)
52 PSF
168’-6”9’-4”9’-7”3’-4”
7”
(t=5.50)
61 PSF
224’-10”5’-8”5’-8”1’-9”
7”
(t=5.50)
61 PSF
205’-8”6’-8”6’-8”2’-1”
7”
(t=5.50)
61 PSF
186’-11”7’-9”8’-0”2’-8”
7”
(t=5.50)
61 PSF
168’-0”8’-9”9’-1”3’-2”

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