Product Technical Guides : US-EN Direct Fastening - Volume 1 Edition 22 | Page 34

Allowable Loads in Concrete Masonry Units 1 , 2 , 3 , 4 , 5 , 10
Fastener Description
Premium concrete fastener
Universal knurled shank fasteners
Standard fastener
Gas fastener
Fastener
Shank diameter in . ( mm )
X-P 0.157 ( 4.0 )
X-U 0.157 ( 4.0 )
X-C 0.138 ( 3.5 )
X-C B3 , X-C G3 0 . 118 ( 3 . 0 )
Gas fastener X-C G2 0.108 ( 2.7 )
Min . embed . in . ( mm )
Hollow CMU
Grout filled CMU
Face shell 6 Mortar joint Face shell 6 Mortar joint Top of grouted cell 8
Tension lb ( kN )
Shear 9 lb ( kN )
1 The tabulated allowable load values are for the low-velocity fastener only , using a safety factor of 5.0 or higher calculated in accordance with ICC-ES AC70 . Wood or steel members connected to the substrate must be investigated in accordance with accepted design criteria .
2 The tabulated allowable load values are for low-velocity fasteners installed in normal weight or lightweight concrete masonry units conforming to ASTM C90 .
3 The tabulated allowable load values are for low-velocity fasteners installed in concrete masonry units with mortar conforming to ASTM C270 , Type N or S .
4 The tabulated allowable load values are for low-velocity fasteners installed in concrete masonry units with grout conforming to ASTM C476 , as coarse grout .
5 The tabulated allowable load values are for one low-velocity fastener installed in an individual masonry unit cell and at least 4 " from the edge of the wall .
6 Fastener can be located anywhere on the face shell or mortar joint as shown in the figure to the right .
7 Shear direction can be horizontal or vertical ( Bed Joint or T-Joint ) along the CMU wall plane . 8 Fastener located in center of grouted cell installed vertically . 9 Shear can be in any direction . 10 Multiple fasteners are recommended for any attachment .
Tension lb ( kN )
Shear 7 lb ( kN )
Tension lb ( kN )
Shear 9 lb ( kN )
Tension lb ( kN )
Shear 7 lb ( kN )
Tension lb ( kN )
Shear 9 lb ( kN )
1 70 105 85 70 150 145 150 155 165 240 ( 25 ) ( 0.31 ) ( 0.47 ) ( 0.38 ) ( 0.31 ) ( 0.67 ) ( 0.65 ) ( 0.67 ) ( 0.69 ) ( 0.73 ) ( 1.07 ) 1 70 85 25 70 225 220 150 190 165 240 ( 25 ) ( 0.31 ) ( 0.38 ) ( 0.11 ) ( 0.31 ) ( 1.00 ) ( 0.98 ) ( 0.67 ) ( 0.85 ) ( 0.73 ) ( 1.07 ) 3 / 4 40 85 25 50 100 105 45 80 115 175 ( 19 ) ( 0.18 ) ( 0.38 ) ( 0.11 ) ( 0.22 ) ( 0.44 ) ( 0.47 ) ( 0.20 ) ( 0.36 ) ( 0.51 ) ( 0.78 ) 3 / 4 145 190 80 80 155 195 110 135 105 145 ( 19 ) ( 0.65 ) ( 0.85 ) ( 0.36 ) ( 0.36 ) ( 0.69 ) ( 0.87 ) ( 0.49 ) ( 0.60 ) ( 0.47 ) ( 0.65 ) 1 185 205 105 105 205 215 135 190 120 150 ( 25 ) ( 0.82 ) ( 0.91 ) ( 0.47 ) ( 0.47 ) ( 0.91 ) ( 0.96 ) ( 0.60 ) ( 0.85 ) ( 0.53 ) ( 0.67 ) 3 / 4 75 140 60 80 100 170 100 160 80 130 ( 19 ) ( 0.33 ) ( 0.62 ) ( 0.27 ) ( 0.36 ) ( 0.44 ) ( 0.76 ) ( 0.44 ) ( 0.71 ) ( 0.36 ) ( 0.58 ) 1 110 190 70 145 135 195 125 165 110 145 ( 25 ) ( 0.49 ) ( 0.85 ) ( 0.31 ) ( 0.65 ) ( 0.60 ) ( 0.87 ) ( 0.56 ) ( 0.73 ) ( 0.49 ) ( 0.65 )
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Acceptable locations ( NON-SHADED AREAS ) for poweractuated fasteners in CMU walls
* More details about the innovative X-P and X-U fasteners can be found in Section 3.2.6 .
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