DESIGN DATA IN CONCRETE PER ACI 318
ACI 318 Chapter 17 Design The design tables in Tables 2 to 4 are Hilti Simplified Design Tables . The load values were developed using the design parameters and variables of ICC Evaluation Services ESR-4236 and the equations within ACI 318 Chapter 17 as amended by ICC-ES AC193 . The strength design capacities calculated from the tables below are to be compared to the factored loads determined from strength design load combinations . For a detailed explanation of the Hilti Simplified Design Tables , refer to Section 3.1.8 . Data tables from ESR-4236 are not contained in this section , but can be found at www . hilti . com or www . icc-es . org .
Table 2 — Hilti HDI-P TZ design strength based on concrete failure modes in uncracked concrete per ACI 318 14 Ch . 17 1 , 2 , 3 , 4 , 5
Nominal anchor diameter in . |
Nominal embed . in . ( mm ) |
Tension ( lesser of concrete breakout / pullout ) - φN n
f ' c = 2500 psi ( 17.2 MPa ) lb ( kN )
f ' c = 3000 psi ( 20.7 MPa ) lb ( kN )
f ' c = 4000 psi ( 27.6 MPa ) lb ( kN )
f ' c = 6000 psi ( 41.4 MPa ) lb ( kN )
|
f ' c = 2500 psi ( 17.2 MPa ) lb ( kN )
Shear ( lesser of concrete breakout or pryout ) - φV n
f ' c = 3000 psi ( 20.7 MPa ) lb ( kN )
f ' c = 4000 psi ( 27.6 MPa ) lb ( kN )
f ' c = 6000 psi ( 41.4 MPa ) lb ( kN )
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3 / 8 3 / 4 ( 19 ) 310 ( 1.4 ) 340 ( 1.5 ) 395 ( 1.8 ) 485 ( 2.1 ) 350 ( 1.6 ) 385 ( 1.7 ) 445 ( 2.0 ) 545 ( 2.4 )
Table 3 — Hilti HDI-P TZ design strength based on concrete failure modes in cracked concrete per ACI 318 14 Ch . 17 1 , 2 , 3 , 4 , 5 , 6 , 7
Nominal anchor diameter in . |
Nominal embed . in . ( mm ) |
Tension ( lesser of concrete breakout / pullout ) - φN n
f ' c = 2500 psi ( 17.2 MPa ) lb ( kN )
f ' c = 3000 psi ( 20.7 MPa ) lb ( kN )
f ' c = 4000 psi ( 27.6 MPa ) lb ( kN )
f ' c = 6000 psi ( 41.4 MPa ) lb ( kN )
|
f ' c = 2500 psi ( 17.2 MPa ) lb ( kN )
Shear ( lesser of concrete breakout or pryout ) - φV n
f ' c = 3000 psi ( 20.7 MPa ) lb ( kN )
f ' c = 4000 psi ( 27.6 MPa ) lb ( kN )
f ' c = 6000 psi ( 41.4 MPa ) lb ( kN )
|
3 / 8 3 / 4 ( 19 ) 190 ( 0.8 ) 200 ( 0.9 ) 220 ( 1.0 ) 255 ( 1.1 ) 250 ( 1.1 ) 270 ( 1.2 ) 315 ( 1.4 ) 385 ( 1.7 )
The following footnotes apply to both Table 2 and 3 : 1 See Section 3.1.8.6 of the Anchor Tech Guide Ed . 17 to convert design strength value to ASD value . 2 Linear interpolation between concrete compressive strengths is not permitted . 3 Tabular values are for a single anchor with a minimum edge distance of 6-1 / 2-in ( 166mm ) and a minimum spacing of 8-in ( 204mm ). For a 6-in ( 153mm ) edge distance multiply uncracked concrete tension and shear values by 0.92 . No reduction needed for cracked concrete . 4 Compare to the steel values in Table 4 . The lesser of the values is to be used for the design . 5 Tabular values are for normal weight concrete only . For lightweight concrete multiply design strength by λ a as follows : For sand-lightweight , λ a = 0.68 . For all-lightweight , λ a = 0.60 . 6 Tabular values are for static loads only . For seismic tension loads , multiply cracked concrete tabular values in tension by α N , seis = 0.74 . 7 No additional reduction needed for seismic shear for concrete breakout or pryout failure . See Section 3.1.8.7 of the Anchor Tech Guide Ed . 17 for additional information on seismic applications .
Table 4 — Hilti HDI-P TZ design strength based on steel failure per ACI 318 Ch . 17 1 , 2 , 3
Nominal anchor diameter in . |
Tensile 4
φN sa lb ( kN )
|
Steel strength of HDI-P TZ anchor
Shear 5
φV sa lb ( kN )
Seismic Shear 6 , 9
φV sa lb ( kN )
|
Tensile 4
φN sa , rod lb ( kN )
Steel strength of ASTM A36 threaded rod
Shear 7
φV sa , rod lb ( kN )
Seismic Shear 8 , 9
φV sa , rod , eq lb ( kN )
|
3 / 8 4,065 ( 18.1 ) 585 ( 2.6 ) 585 ( 2.6 ) 3,370 ( 15.0 ) 1,885 ( 8.4 ) 1,320 ( 5.9 )
1 See Section 3.1.8.6 of the Anchor Tech Guide Ed . 17 to convert design strength value to ASD value . 2 Steel strength in tension and shear determined from the lesser of the HDI-P TZ or the inserted threaded rod . 3 Hilti HDI-P TZ anchors are considered a brittle steel element . ASTM A36 threaded rod is considered a ductile steel element . 4 Tensile φN sa = φA se , N f uta as noted in ACI 318 Ch . 17 . 5 Shear values for HDI-P TZ determined by static shear tests with φV sa ≤ φ 0.60 A se , V f uta as noted in ACI 318 Ch . 17 . 6 Seismic shear values for HDI-P TZ determined by seismic shear tests with φV sa < φ 0.60 A se , V f uta as noted in ACI 318 Ch . 17 . 7 Shear values for threaded rod determined by φV sa , rod = φ 0.60 A se , V f uta as noted in ACI 318 Ch . 17 . 8 Seismic shear values for threaded rod determined by φV sa , rod , eq = φ 0.70 V sa , rod . 9 See Section 3.1.8.7 of the Anchor Tech Guide Ed . 17 for additional information on seismic applications
430 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.13 HDI-P TZ FLUSH 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