Steel Deck Fastening Systems
Steel Deck Fastener Design and Selection 1.1
Table 9 – Diaphragm stiffness (G') and flexibility factor (F) equation variable values
Deck gauge (inches)
Configuration
Deck
type
B
or
BI
Min. deck
tensile (yield)
strength, ksi
Frame
fastener Sidelap
connector 1
X-HSN 24 Hilti SLC or
Hilti #10 HWH Screw
X-ENP-19 Hilti SLC or
Hilti #10 HWH Screw
S-MD 12-24x1-5/8 M HWH5 Hilti SLC or
Hilti #10 HWH Screw
45 or 92
(33 or 80)
22
(0.0295) 20
(0.0358) 18
(0.0474) 16
(0.0598)
S f , in./kip S f , in./kip S f , in./kip S f , in./kip
S s , in./kip S s , in./kip S s , in./kip S s , in./kip
0.0073
0.0175
0.0044
0.0175
0.0076
0.0175 0.0066
0.0159
0.0040
0.0159
0.0069
0.0159 0.0057
0.0138
0.0034
0.0138
0.0060
0.0138 0.0051
0.0123
0.0030
0.0123
0.0053
0.0123
1 Reference Table 3 and Section 3.5.4 for more information on the proper selection of Hilti Sidelap Connectors (SLC).
Table 10 – Minimum recommended sidelap connector spacing (Inches center-to-center) for X-HSN 24 and X-ENP-19
powder-actuated fasteners with B-Deck or BI-Deck type
Frame fastener
base material
thickness, in.
X-HSN 24
1/8 ≤ t f < 3/16
X-HSN 24
3/16 ≤ t f ≤ 3/8
X-ENP-19
t f ≥ 1/4
Deck
gauge
22
20
18
16
22
20
18
16
22
20
18
16
Frame fastener pattern
36/3
36/4
SLC 1 #10
– –
≥ 12 ≥ 3
– –
≥ 6 ≥ 3
36/7
SLC 1
#10
36/9 2
SLC 1
#10
36/11 2
SLC 1
#10
SLC 1 #10 36/5
SLC 1
#10 ≥ 12 ≥ 6 ≥ 12 ≥ 6 ≥ 6 ≥ 3 ≥ 6 ≥ 3 ≥ 6 ≥ 3
– – – – – – – – – –
≥ 6 ≥ 3 ≥ 6 ≥ 3 ≥ 3 ≥ 3 ≥ 3 ≥ 3 ≥ 3 ≥ 3
≥ 6 ≥ 3 ≥ 6 ≥ 3 ≥ 3 ≥ 3 ≥ 3 ≥ 3 ≥ 3 ≥ 3
1 Hilti SLC spacings less than those tabulated may be used. The tabulated spacing should be used in the calculation of diaphragm shear strength when using
the Q f , Q s and c values from Table 8. Alternatively, only when the SLC spacings are less than those tabulated, the Q f , Q s and c values found in Table 8 can be
replaced by the following values.
X-HSN 24 – All deck types, strengths and base steel thicknesses listed in Table 8
22 Gauge (0.0295 in.)- Q f = 1489 lb, Q s = 716 lb, c = 1.000
20 Gauge (0.0358 in.)- Q f = 1795 lb, Q s = 869 lb, c = 1.000
18 Gauge (0.0474 in.)- Q f = 2348 lb, Q s = 1151 lb, c = 1.000
16 Gauge (0.0598 in.) - Q f = 2924 lb, Q s = 1452 lb, c = 1.000
2 For 36/9 and 36/11 patterns, when wind (or seismic) diaphragm shear capacities exceed the values shown below, the fastening pattern must be increased at
the building perimeter, chords, collectors or other shear transfer elements to two fasteners per rib (i.e. 36/14 pattern). The wind (or seismic) diaphragm shear
capacity must not be greater than that determined from the 36/9 and 36/11 patterns, as applicable.
X-HSN 24 with steel support framing thicknesses 1/8" ≤ t f < 3/16"
ASD wind (seismic)
LRFD wind (seismic)
22 Gauge (0.0295 in.) -
1275 plf (1200 plf)
2100 plf (1950 plf)
20 Gauge (0.0358 in.) -
1600 plf (1500 plf)
2625 plf (2450 plf)
18 Gauge (0.0474 in.) -
1825 plf (1700 plf)
3000 plf (2675 plf) LSD wind (seismic)
28.5 N/mm (26.3 N/mm)
35.8 N/mm (32.8 N/mm)
39.0 N/mm (37.2 N/mm)
X-HSN 24 with steel support framing thicknesses 3/16" ≤ t f ≤ 3/8"
ASD wind (seismic)
LRFD wind (seismic)
22 Gauge (0.0295 in.) -
1400 plf (1300 plf)
2300 plf (2125 plf)
20 Gauge (0.0358 in.) -
1700 plf (1600 plf)
2800 plf (2600 plf)
18 Gauge (0.0474 in.) -
2250 plf (2100 plf)
3700 plf (3425 plf)
16 Gauge (0.0598 in.) -
2775 plf (2600 plf)
4550 plf (4225 plf) LSD wind (seismic)
31.0 N/mm (28.8 N/mm)
37.9 N/mm (35.0 N/mm)
50.0 N/mm (46.3 N/mm)
61.7 N/mm (56.9 N/mm)
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I PTG Decking Supplement 2014 19