Masonry Anchor Strength Design Guide 2024
Table 19 — Hilti HIT-HY 270 design strength with CMU failure modes for threaded rods not near an edge in uncracked , ungrouted CMU 1 , 2 , 3 , 4 , 5 , 6 , 7
Table 20 — Hilti HIT-HY 270 design strength with CMU failure modes for threaded rods not near an edge in cracked , ungrouted CMU 1 , 2 , 3 , 4 , 5 , 6 , 7
Nominal anchor diameter in .
1 / 4
5 / 16
3 / 8
1 / 2
Effective embedment in . ( mm )
Tension ΦN n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Shear ΦV n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
2 |
215 |
275 |
( 51 ) |
( 1.0 ) |
( 1.2 ) |
2 |
355 |
450 |
( 51 ) |
( 1.6 ) |
( 2.0 ) |
2 |
350 |
450 |
( 51 ) |
( 1.6 ) |
( 2.0 ) |
2 |
360 |
455 |
( 51 ) |
( 1.6 ) |
( 2.0 ) |
1 Tabular values are for a single anchor with no influence from nearby edges or additional anchors . For designs with the influence of nearby edges or additional anchors , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from AC58 .
2 Compare masonry tabular values to the steel values in the Appendix . The lesser of the values is to be used for the design . 3 LFRD load capacities based on evaluation in accordance with AC58 4 Data is for Maximum short term temperature = 176 ° F ( 80 ° C ) | Maximum long term temperature = 110 ° F ( 43 ° C ). 5 Tabular values are for dry masonry conditions . For water saturated masonry conditions , multiply design strength values by : α sat ,
1 / 4-in , 5 / 16-in , 3 / 8-in and 1 / 2-in diameter - α sat
= 1.00 6 Tabular values are for static loads only . Seismic design is not permitted . 7 Tabular values are for short term loads only . For sustained loads including overhead use , see Section 3.0 and multiply design strength values in tension and shear by 0.90 .
Nominal anchor diameter in .
1 / 4
5 / 16
3 / 8
1 / 2
Effective embedment in . ( mm )
Tension ΦN n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Shear ΦV n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
2 |
105 |
135 |
( 51 ) |
( 0.5 ) |
( 0.6 ) |
2 |
175 |
225 |
( 51 ) |
( 0.8 ) |
( 1.0 ) |
2 |
175 |
225 |
( 51 ) |
( 0.8 ) |
( 1.0 ) |
2 |
180 |
225 |
( 51 ) |
( 0.8 ) |
( 1.0 ) |
1 Tabular values are for a single anchor with no influence from nearby edges or additional anchors . For designs with the influence of nearby edges or additional anchors , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from AC58 .
2 Compare masonry tabular values to the steel values in the Appendix . The lesser of the values is to be used for the design . 3 LFRD load capacities based on evaluation in accordance with AC58 4 Data is for Maximum short term temperature = 176 ° F ( 80 ° C ) | Maximum long term temperature = 110 ° F ( 43 ° C ). 5 Tabular values are for dry masonry conditions . For water saturated masonry conditions , multiply design strength values by : α sat ,
1 / 4-in , 5 / 16-in , 3 / 8-in and 1 / 2-in diameter - α sat
= 1.00 6 Tabular values are for static loads only . Seismic design is not permitted . 7 Tabular values are for short term loads only . For sustained loads including overhead use , see Section 3.0 and multiply design strength values in tension and shear by 0.90 .
Table 21 — Hilti HIT-HY 270 design strength with CMU failure modes for HIT-IC inserts not near an edge in uncracked , ungrouted CMU 1 , 2 , 3 , 4 , 5 , 6 , 7
Table 22 — Hilti HIT-HY 270 design strength with CMU failure modes for HIT-IC inserts not near an edge in cracked , ungrouted CMU 1 , 2 , 3 , 4 , 5 , 6 , 7
Nominal anchor diameter in .
5 / 16
3 / 8
1 / 2
Effective embedment in . ( mm )
Tension ΦN n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Shear ΦV n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
2 |
430 |
465 |
( 51 ) |
( 1.9 ) |
( 2.1 ) |
2 |
360 |
460 |
( 51 ) |
( 1.6 ) |
( 2.0 ) |
2 |
365 |
465 |
( 51 ) |
( 1.6 ) |
( 2.1 ) |
1 Tabular values are for a single anchor with no influence from nearby edges or additional anchors . For designs with the influence of nearby edges or additional anchors , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from AC58 .
2 Compare masonry tabular values to the steel values in the Appendix . The lesser of the values is to be used for the design . 3 LFRD load capacities based on evaluation in accordance with AC58 . 4 Data is for Maximum short term temperature = 176 ° F ( 80 ° C ) | Maximum long term temperature = 110 ° F ( 43 ° C ). 5 Tabular values are for dry masonry conditions . For water saturated masonry conditions , multiply design strength values by : α sat ,
5 / 16-in , 3 / 8-in and 1 / 2-in diameter - α sat
= 1.00 6 Tabular values are for static loads only . Seismic design is not permitted . 7 Tabular values are for short term loads only . For sustained loads including overhead use , see Section 3.0 and multiply design strength values in tension and shear by 0.90 .
Nominal anchor diameter in .
5 / 16
3 / 8
1 / 2
Effective embedment in . ( mm )
Tension ΦN n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
Shear ΦV n
f ́m = 1500 psi ( 10.3 MPa ) lb ( kN )
2 |
220 |
235 |
( 51 ) |
( 1.0 ) |
( 1.0 ) |
2 |
180 |
230 |
( 51 ) |
( 0.8 ) |
( 1.0 ) |
2 |
180 |
230 |
( 51 ) |
( 0.8 ) |
( 1.0 ) |
1 Tabular values are for a single anchor with no influence from nearby edges or additional anchors . For designs with the influence of nearby edges or additional anchors , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from AC58 .
2 Compare masonry tabular values to the steel values in the Appendix . The lesser of the values is to be used for the design . 3 LFRD load capacities based on evaluation in accordance with AC58 . 4 Data is for Maximum short term temperature = 176 ° F ( 80 ° C ) | Maximum long term temperature = 110 ° F ( 43 ° C ). 5 Tabular values are for dry masonry conditions . For water saturated masonry conditions , multiply design strength values by : α sat ,
5 / 16-in , 3 / 8-in and 1 / 2-in diameter - α sat
= 1.00 6 Tabular values are for static loads only . Seismic design is not permitted . 7 Tabular values are for short term loads only . For sustained loads including overhead use , see Section 3.0 and multiply design strength values in tension and shear by 0.90 .
Masonry Fastening Technical Guide Edition 24 | 7.1 HIT-HY 270 HYBRID FOR MASONRY CONSTRUCTION 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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