Post-Installed Anchors in Masonry Canada English | Página 87

Masonry Anchor Strength Design Guide 2024
Table 2 — Hilti KB1 design strength with masonry failure modes in the face of uncracked fully grouted CMU walls 1 , 2 , 3 , 4
Nominal anchor diameter in .
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 / 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 ) f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Shear ( lesser of pryout or crushing ) - ФV 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 )
2
760
760
760
760
1,305
1,505
1,685
1,845
( 51 )
( 3.4 )
( 3.4 )
( 3.4 )
( 3.4 )
( 5.8 )
( 6.7 )
( 7.5 )
( 8.2 )
2
1,025
1,185
1,320
1,350
1,305
1,505
1,685
1,845
( 51 )
( 4.6 )
( 5.3 )
( 5.9 )
( 6.0 )
( 5.8 )
( 6.7 )
( 7.5 )
( 8.2 )
3-1 / 4
1,965
1,965
1,965
1,965
3,085
3,315
3,505
3,670
( 83 )
( 8.7 )
( 8.7 )
( 8.7 )
( 8.7 )
( 13.7 )
( 14.7 )
( 15.6 )
( 16.3 )
2-3 / 4
1,950
2,000
2,000
2,000
3,465
3,725
3,935
4,120
( 70 )
( 8.7 )
( 8.9 )
( 8.9 )
( 8.9 )
( 15.4 )
( 16.6 )
( 17.5 )
( 18.3 )
4
2,945
2,945
2,945
2,945
3,465
3,725
3,935
4,120
( 102 )
( 13.1 )
( 13.1 )
( 13.1 )
( 13.1 )
( 15.4 )
( 16.6 )
( 17.5 )
( 18.3 )
3-1 / 4
2,300
2,300
2,300
2,300
3,805
4,090
4,325
4,530
( 83 )
( 10.2 )
( 10.2 )
( 10.2 )
( 10.2 )
( 16.9 )
( 18.2 )
( 19.2 )
( 20.2 )
4-3 / 4
3,245
3,245
3,245
3,245
3,805
4,090
4,325
4,530
( 121 )
( 14.4 )
( 14.4 )
( 14.4 )
( 14.4 )
( 16.9 )
( 18.2 )
( 19.2 )
( 20.2 )
1 Linear interpolation between embedment depths and masonry compressive strengths is not permitted . 2 Tabular values are for a single anchor with no influence from nearby edges , hollow head joints , or additional anchors . For designs with the influence of nearby edges , hollow head joints , 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 6 . 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 3 — Hilti KB1 design strength with masonry failure modes in the face of cracked fully grouted CMU walls 1 , 2 , 3 , 4
Nominal anchor diameter in .
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 / 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 ) f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Shear ( lesser of pryout or crushing ) - ФV 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 )
2
570
570
570
570
920
1,065
1,190
1,300
( 51 )
( 2.5 )
( 2.5 )
( 2.5 )
( 2.5 )
( 4.1 )
( 4.7 )
( 5.3 )
( 5.8 )
2
675
675
675
675
920
1,065
1,190
1,300
( 51 )
( 3.0 )
( 3.0 )
( 3.0 )
( 3.0 )
( 4.1 )
( 4.7 )
( 5.3 )
( 5.8 )
3-1 / 4
980
980
980
980
3,085
3,315
3,505
3,670
( 83 )
( 4.4 )
( 4.4 )
( 4.4 )
( 4.4 )
( 13.7 )
( 14.7 )
( 15.6 )
( 16.3 )
2-3 / 4
1,380
1,590
1,600
1,600
2,965
3,425
3,830
4,120
( 70 )
( 6.1 )
( 7.1 )
( 7.1 )
( 7.1 )
( 13.2 )
( 15.2 )
( 17.0 )
( 18.3 )
4
2,355
2,355
2,355
2,355
3,465
3,725
3,935
4,120
( 102 )
( 10.5 )
( 10.5 )
( 10.5 )
( 10.5 )
( 15.4 )
( 16.6 )
( 17.5 )
( 18.3 )
3-1 / 4
1,335
1,335
1,335
1,335
3,805
4,090
4,325
4,530
( 83 )
( 5.9 )
( 5.9 )
( 5.9 )
( 5.9 )
( 16.9 )
( 18.2 )
( 19.2 )
( 20.2 )
4-3 / 4
1,880
1,880
1,880
1,880
3,805
4,090
4,325
4,530
( 121 )
( 8.4 )
( 8.4 )
( 8.4 )
( 8.4 )
( 16.9 )
( 18.2 )
( 19.2 )
( 20.2 )
1 Linear interpolation between embedment depths and masonry compressive strengths is not permitted . 2 Tabular values are for a single anchor with no influence from nearby edges , hollow head joints , or additional anchors . For designs with the influence of nearby edges , hollow head joints , 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 6 . 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 0.75 .
Masonry Fastening Technical Guide Edition 24 | 7.7 KB1 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
87