Direct Fastening Technical Guide , Edition 22
Ultimate loads in structural 3000 psi lightweight concrete 1 , 4
Fastener
Shank diameter in . ( mm )
Minimum embedment in . ( mm )
Installed into concrete
Tension lb ( kN )
Shear lb ( kN )
Fastener location Installed through metal deck into concrete
3 inch deep composite floor deck 2
Tension lb ( kN ) Upper flute Lower flute
Shear lb ( kN )
1-1 / 2 inch deep composite floor deck 3
Tension lb ( kN ) Upper flute Lower flute
Shear lb ( kN )
X-U
Universal Fastener
0.157 ( 4.0 )
3 / 4 ( 19 ) 627 ( 2.8 ) 747 ( 3.3 ) 649 ( 2.9 ) 483 ( 2.1 ) 1235 ( 5.5 ) 562 ( 2.5 ) 777 ( 3.5 ) 1862 ( 8.3 )
1 ( 25 ) 1037 ( 4.6 ) 1387 ( 6.2 ) 1083 ( 4.8 ) 774 ( 3.4 ) 1645 ( 7.3 ) 774 ( 3.4 ) 878 ( 3.9 ) 2079 ( 9.3 ) 1-1 / 4 ( 32 ) 1581 ( 7.0 ) 2173 ( 9.7 ) 1464 ( 6.5 ) 848 ( 3.8 ) 1885 ( 8.4 ) - - - 1-1 / 2 ( 38 ) 2116 ( 9.4 ) 2524 ( 11.2 ) 2010 ( 8.9 ) 1292 ( 5.7 ) 2155 ( 9.6 ) - - -
X-P
Premium Concrete Fastener
0.157 ( 4.0 )
3 / 4 ( 19 ) 785 ( 3.5 ) 1005 ( 4.5 ) 738 ( 3.3 ) 525 ( 2.3 ) 1530 ( 6.8 ) 705 ( 3.1 ) 840 ( 3.7 ) 1680 5 ( 74.8 )
1 ( 25 ) 1245 ( 5.5 ) 1625 ( 7.2 ) 1120 ( 5.0 ) 840 ( 3.7 ) 1710 ( 7.6 ) 1310 ( 4.8 ) 1190 ( 5.3 ) 1935 5 ( 86.1 ) 1-1 / 4 ( 32 ) 1720 ( 7.7 ) 2240 ( 10.0 ) 1985 ( 8.8 ) 1295 ( 5.8 ) 2025 ( 9.0 ) - 1430 ( 6.4 ) 2675 5 ( 11.9 ) 1-1 / 2 ( 38 ) 2260 ( 10.1 ) 2465 ( 11.0 ) 2335 ( 10.4 ) 2015 ( 9.0 ) 1835 ( 8.2 ) - - -
Allowable loads in structural 3000 psi lightweight concrete 1 , 4
Fastener
Shank diameter in . ( mm )
Minimum embedment in . ( mm )
Installed into concrete
Tension lb ( kN )
Shear lb ( kN )
Fastener location Installed through metal deck into concrete
3 inch deep composite floor deck 2
Tension lb ( kN ) Upper flute Lower flute
Shear lb ( kN )
1-1 / 2 inch deep composite floor deck 3
Tension lb ( kN ) Upper flute Lower flute
Shear lb ( kN )
X-U
Universal Fastener
0.157 ( 4.0 )
3 / 4 |
( 19 ) |
125 |
( 0.6 ) |
115 |
( 0.5 ) |
130 |
( 0.6 ) |
95 |
( 0.4 ) |
245 |
( 1.1 ) |
95 |
( 0.4 ) |
95 |
( 0.4 ) |
370 ( 1.6 ) |
1 |
( 25 ) |
205 |
( 0.9 ) |
260 |
( 1.2 ) |
215 |
( 1.0 ) |
155 |
( 0.7 ) |
330 |
( 1.5 ) |
125 |
( 0.6 ) |
125 |
( 0.6 ) |
415 |
( 1.8 ) |
1-1 / 4 |
( 32 ) |
315 |
( 1.4 ) |
435 |
( 1.9 ) |
295 |
( 1.3 ) |
200 |
( 0.9 ) |
375 |
( 1.7 ) |
- |
- |
- |
1-1 / 2 |
( 38 ) |
425 |
( 1.9 ) |
475 |
( 2.1 ) |
400 |
( 1.8 ) |
260 |
( 1.2 ) |
430 |
( 1.9 ) |
- |
- |
- |
X-P
Premium Concrete Fastener
0.157 ( 4.0 )
3 / 4 ( 19 ) 155 ( 0.7 ) 165 ( 0.7 ) 130 ( 0.6 ) 105 ( 0.5 ) 285 ( 1.3 ) 140 ( 0.6 ) 130 ( 0.6 ) 335 5 ( 14.9 )
1 ( 25 ) 225 ( 1.0 ) 300 ( 1.3 ) 215 ( 1.0 ) 165 ( 0.7 ) 340 ( 1.5 ) 215 ( 1.0 ) 215 ( 1.0 ) 385 5 ( 17.2 ) 1-1 / 4 ( 32 ) 325 ( 1.4 ) 445 ( 2.0 ) 295 ( 1.3 ) 230 ( 1.0 ) 375 ( 1.7 ) - 270 ( 1.2 ) 465 5 ( 2.1 ) 1-1 / 2 ( 38 ) 425 ( 1.9 ) 480 ( 2.1 ) 400 ( 1.8 ) 330 ( 1.5 ) 365 ( 1.6 ) - - -
1 The tabulated load values are for the low-velocity fasteners only based on testing in accordance with ICC-ES AC 70 and ASTM E1190 . Allowable loads are calculated based on a safety factor of at least 5.0 . Some conditions like high wind loads , shock or fatigue may require a different safety factor . Wood or steel members connected to the substrate must be investigated in accordance with accepted design criteria .
2 The steel deck profile for the 3 ” deep composite floor deck has a minimum thickness of 20 gauge ( 0.0358 ”) and a minimum Fy = 33 ksi . Lower and upper flute width must be a minimum of 3-7 / 8 ”. Figure 1 in Section 3.2.1.6 shows the nominal flute dimensions , fastener locations and load orientations for the deck profile . Structural lightweight concrete fill above top of steel deck must be minimum 3-1 / 4 ”.
3 The steel deck profile for the 1-1 / 2 ” deep composite floor deck has a minimum thickness of 20 gauge ( 0.0358 ”) and a minimum Fy = 33 ksi . Lower flute and upper flute widths must be a minimum of 1-3 / 4 ” and 3-1 / 2 ”, respectively . This deck may also be inverted as shown in Figure 3 in Section 3.2.1.6 . Figures 2 and 3 in Section 3.2.1.6 show the nominal flute dimensions , fastener locations and load orientations for the deck profile . Structural lightweight concrete fill above top of steel deck must be minimum 2-1 / 2 ”. 4 Multiple fasteners are recommended for any attachment . 5 For installation in the lower flute only .
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