ICC ESR-2197 for Steel Deck and Concrete-Filled Deck Diaphragm Attachment

ESR-2197
|
Most Widely Accepted and Trusted Page 10 of 23
TABLE 7—ALLOWABLE DIAPHRAGM SHEARS (ASD), S
nb
/Ω
nb
(POUNDS PER LINEAL FOOT) FOR BUCKLING AND LRFD DIAPHRAGM SHEARS, ɸ
nb
S
nb
(POUNDS PER LINEAL FOOT),
BASED ON BUCKLING OF STANDARD 1
1
/
2
–INCH-DEEP FLUTES, 6-INCHES CENTER-TO-CENTER STEEL DECK AND STANDARD 3–INCH-DEEP FLUTES,
8 INCHES CENTER-TO-CENTER STEEL DECK
1,2,3
STEEL DECK
TYPE
DECK
GAGE
Minimum
Moment of
Inertia
4
, I
in
4
/ft
SPAN (FT - IN.)
4′-0″ 5′-0″ 6′-0″ 7′-0″ 8′-0″ 9′-0″ 10′-0″ 11′-0″ 12′-0″ 13’-0” 14’-0” 15’-0”
ASD – S
nb
/Ω
nb
where Ω
nb
= 2.00
Standard 1
1
/
2
-
inch Deep Flutes,
6 Inches Center-
to-Center
22 0.173 4,360 2,790 1,938 1,424 1090 861 698 576 484 413 356 310
20
0.210 5,829 3,731 2,591 1,903 1,457 1,151 933 771 648 552 476 415
18
0.279 8,904 5,698 3,957 2,907 2,226 1,759 1,425 1,177 989 843 727 633
16 0.353 12,644 8,092 5,620 4,129 3,161 2,498 2,023 1,672 1,405 1,197 1,032 899
Standard 3-Inch
Deep Flutes,
8 Inches Center-
to-Center
22 0.808 13,281 8,500 5,903 4,337 3,320 2,623 2,125 1,756 1,476 1,257 1,084 944
20 0.989 17,870 11,437 7,942 5,835 4,467 3,530 2,859 2,363 1,986 1,692 1,459 1,271
18 1.323 27,435 17,559 12,193 8,958 6,859 5,419 4,390 3,628 3,048 2,597 2,240 1,951
16 1.672 38,928 24,914 17,301 12,711 9,732 7,689 6,228 5,147 4,325 3,685 3,178 2,768
LRFD - ɸ
nb
S
nb
where ɸ
nb
= 0.80
Standard 1
1
/
2
-
inch Deep Flutes,
6 Inches Center-
to-Center
22
0.173 6,975 4,464 3,100 2,278 1,744 1,378 1,116 922 775 843 7,27 633
20
0.210 9,327 5,969 4,145 3,046 2,332 1,842 1,492 1,233 1,036 1,197 1,032 899
18 0.279 14,246 9,118 6,332 4,652 3,562 2,814 2,279 1,884 1,583 1,257 1,084 944
16
0.353 20,231 12,948 8,992 6,606 5,058 3,996 3,237 2,675 2,248 1,692 1,459 1,271
Standard 3-inch
Deep Flutes,
8 Inches Center-
to-Center
22 0.808 21,250 13,600 9,444 6,939 5,312 4,197 3,400 2,810 2,361 2,597 2,240 1,951
20 0.989 28,591 18,298 12,707 9,336 7,148 5,648 4,575 3,781 3,177 3,685 3,178 2,768
18 1.323 43,896 28,094 19,509 14,334 10,974 8,671 7,023 5,804 4,877 843 727 633
16 1.672 62,284 39,862 27,682 20,338 15,571 12,303 9,965 8,236 6,920 1,197 1,032 899
For SI: 1 inch = 25.4 mm, 1 ksi = 6.89 MPa, 1 plf = 0.0146 N/mm, 1 in
4
/ft = 1,368 mm
4
/mm.
1
Tabulated values are based on AISI S310 Eq. D-1 and Eq. D2.1-1.
2
Diaphragm shears in this table are for steel deck buckling failure mode only and are to be used as prescribed in Section 4.1 of this report.
3
Diaphragm resistance must be limited to lesser of values in this table and the corresponding respective ASD and LRFD shear capacities shown in Tables 3 through 6 or calculated per Section
4.1 of this report.
4
The tabulated moment of inertia, I, is the moment of inertia of the fully effective panel.