Post-Installed Anchors in Masonry US English | Page 67

Masonry Anchor Strength Design Guide 2024
Table 4 — Hilti Carbon Steel and Stainless Steel KB-TZ2 design strength with masonry failure modes in the face of uncracked fully grouted CMU walls and installed at minimum distance from centerline of hollow head joint 1 , 2 , 3 , 4
Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
5 / 8
3 / 4
Effective embedment in . ( mm ) f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Tension ( lesser of breakout or pullout ) - ФN n
f ́m = 2000 psi ( 13.8 MPa ) lb ( kN ) f ́m = 2500 psi ( 17.2 MPa ) lb ( kN ) f ́m = 3000 psi ( 20.7 MPa ) lb ( kN )
Shear ( lesser of breakout , pryout , or crushing ) - ФV n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN ) f ́m = 2000 psi ( 13.8 MPa ) lb ( kN ) f ́m = 2500 psi ( 17.2 MPa ) lb ( kN ) f ́m = 3000 psi ( 20.7 MPa ) lb ( kN )
1-1 / 2
250
250
250
250
845
980
1,095
1,195
( 38 )
( 1.1 )
( 1.1 )
( 1.1 )
( 1.1 )
( 3.8 )
( 4.4 )
( 4.9 )
( 5.3 )
1-1 / 2
610
610
610
610
845
980
1,095
1,195
( 38 )
( 2.7 )
( 2.7 )
( 2.7 )
( 2.7 )
( 3.8 )
( 4.4 )
( 4.9 )
( 5.3 )
2-1 / 2
1,120
1,120
1,120
1,120
1,670
1,930
2,160
2,365
( 64 )
( 5.0 )
( 5.0 )
( 5.0 )
( 5.0 )
( 7.4 )
( 8.6 )
( 9.6 )
( 10.5 )
2
780
780
780
780
1,075
1,240
1,390
1,520
( 51 )
( 3.5 )
( 3.5 )
( 3.5 )
( 3.5 )
( 4.8 )
( 5.5 )
( 6.2 )
( 6.8 )
3-1 / 4
1,040
1,040
1,040
1,040
1,920
2,220
2,480
2,715
( 83 )
( 4.6 )
( 4.6 )
( 4.6 )
( 4.6 )
( 8.5 )
( 9.9 )
( 11.0 )
( 12.1 )
2-3 / 4
1,320
1,430
1,430
1,430
1,985
2,295
2,565
2,810
( 70 )
( 5.9 )
( 6.4 )
( 6.4 )
( 6.4 )
( 8.8 )
( 10.2 )
( 11.4 )
( 12.5 )
4
1,585
1,585
1,585
1,585
2,140
2,475
2,765
3,030
( 102 )
( 7.1 )
( 7.1 )
( 7.1 )
( 7.1 )
( 9.5 )
( 11.0 )
( 12.3 )
( 13.5 )
3-1 / 4
1,555
1,800
1,925
1,925
2,170
2,505
2,800
3,070
( 83 )
( 6.9 )
( 8.0 )
( 8.6 )
( 8.6 )
( 9.7 )
( 11.1 )
( 12.5 )
( 13.7 )
4-3 / 4
2,530
2,920
3,165
3,165
3,140
3,625
4,055
4,440
( 121 )
( 11.3 )
( 13.0 )
( 14.1 )
( 14.1 )
( 14.0 )
( 16.1 )
( 18.0 )
( 19.8 )
1 Linear interpolation between embedment depths and masonry compressive strengths is not permitted .
2 Tabular values are for a single anchor located 2.5-in ( 3-in for 3 / 4-in diameter with 4-3 / 4 effective embedment ) from centerline of a hollow head joint with no additional influence from nearby edges or additional anchors . For designs with the influence of nearby edges , different distances to a hollow head joint , or additional anchors , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from AC01 . 3 Compare masonry tabular values to the steel values in Table 8 . The lesser of the values is to be used for the design . 4 Tabular values are for static loads only . Seismic design is not permitted for uncracked masonry .
Table 5 — Hilti Carbon Steel and Stainless Steel KB-TZ2 design strength with masonry failure modes in the face of cracked fully grouted CMU walls and installed at minimum distance from centerline of hollow head joint 1 , 2 , 3 , 4
Nominal anchor diameter in .
1 / 4
3 / 8
1 / 2
5 / 8
3 / 4
Effective embedment in . ( mm ) f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Tension ( lesser of breakout or pullout ) - ФN n
f ́m = 2000 psi ( 13.8 MPa ) lb ( kN ) f ́m = 2500 psi ( 17.2 MPa ) lb ( kN ) f ́m = 3000 psi ( 20.7 MPa ) lb ( kN )
Shear ( lesser of breakout , pryout , or crushing ) - ФV n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN ) f ́m = 2000 psi ( 13.8 MPa ) lb ( kN ) f ́m = 2500 psi ( 17.2 MPa ) lb ( kN ) f ́m = 3000 psi ( 20.7 MPa ) lb ( kN )
1-1 / 2
170
170
170
170
600
690
770
845
( 38 )
( 0.8 )
( 0.8 )
( 0.8 )
( 0.8 )
( 2.7 )
( 3.1 )
( 3.4 )
( 3.8 )
1-1 / 2
440
440
440
440
600
690
770
845
( 38 )
( 2.0 )
( 2.0 )
( 2.0 )
( 2.0 )
( 2.7 )
( 3.1 )
( 3.4 )
( 3.8 )
2-1 / 2
810
810
810
810
1,195
1,380
1,540
1,690
( 64 )
( 3.6 )
( 3.6 )
( 3.6 )
( 3.6 )
( 5.3 )
( 6.1 )
( 6.9 )
( 7.5 )
2
595
690
740
740
760
875
980
1,075
( 51 )
( 2.6 )
( 3.1 )
( 3.3 )
( 3.3 )
( 3.4 )
( 3.9 )
( 4.4 )
( 4.8 )
3-1 / 4
930
985
985
985
1,370
1,585
1,770
1,940
( 83 )
( 4.1 )
( 4.4 )
( 4.4 )
( 4.4 )
( 6.1 )
( 7.1 )
( 7.9 )
( 8.6 )
2-3 / 4
860
860
860
860
1,420
1,640
1,830
2,005
( 70 )
( 3.8 )
( 3.8 )
( 3.8 )
( 3.8 )
( 6.3 )
( 7.3 )
( 8.1 )
( 8.9 )
4
950
950
950
950
1,530
1,765
1,975
2,165
( 102 )
( 4.2 )
( 4.2 )
( 4.2 )
( 4.2 )
( 6.8 )
( 7.9 )
( 8.8 )
( 9.6 )
3-1 / 4
1,100
1,270
1,420
1,555
1,550
1,790
2,000
2,190
( 83 )
( 4.9 )
( 5.6 )
( 6.3 )
( 6.9 )
( 6.9 )
( 8.0 )
( 8.9 )
( 9.7 )
4-3 / 4
1,785
2,060
2,305
2,525
2,245
2,590
2,895
3,170
( 121 )
( 7.9 )
( 9.2 )
( 10.3 )
( 11.2 )
( 10.0 )
( 11.5 )
( 12.9 )
( 14.1 )
1 Linear interpolation between embedment depths and masonry compressive strengths is not permitted .
2 Tabular values are for a single anchor located 2.5-in ( 3-in for 3 / 4-in diameter with 4-3 / 4 effective embedment ) from centerline of a hollow head joint with no additional influence from nearby edges or additional anchors . For designs with the influence of nearby edges , different distances to a hollow head joint , or additional anchors , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from AC01 . 3 Compare masonry tabular values to the steel values in Table 8 . The lesser of the values is to be used for the design . 4 Tabular values are for static loads only . For seismic loads , multiply design strength values in tension and shear by the following reduction factors : 1 / 4-in , 3 / 8-in , and 3 / 4-in diameters = 0.75 1 / 2-in diameter = 0.68 5 / 8-in diameter = 0.66
Masonry Fastening Technical Guide Edition 24 | 7.4 KWIK BOLT TZ2 EXPANSION ANCHOR Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458
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