Table 20 — Hilti KB1 factored resistance in the soffit of uncracked lightweight concrete over metal deck 1 , 2 , 3 , 4 , 5 , 6
Nominal anchor diameter in .
3 / 8
1 / 2
5 / 8
Effective embedment in . ( mm )
Nominal embedment in . ( mm )
Min . conc . thickness 10 in . ( mm )
Anchor Fastening Technical Guide , Edition 22
Installation per Figure 3 Installation per Figure 4
Min . conc . = 20 MPa f ́c
|
= 30 MPa f ́c
|
≥ 20 MPa f ́c
|
Tension - N r
|
Shear - V r
|
|
( 2,900 psi ) lb ( kN ) |
( 4,350 psi ) lb ( kN )" |
( 2,900 psi ) lb ( kN ) |
thickness 10 in . ( mm ) |
1-1 / 2 1-7 / 8 2-1 / 2 860 1,000 635 ( 38 ) ( 48 ) ( 64 ) ( 3.8 ) ( 4.4 ) ( 2.8 ) f ́c = 20 MPa ( 2,900 psi ) lb ( kN )
Tension - N r
f ́c = 30 MPa ( 4,350 psi ) lb ( kN )"
Shear - V r
f ́c ≥ 20 MPa ( 2,900 psi ) lb ( kN )
n / a n / a n / a n / a
2 2-3 / 8 2-1 / 2 1,580 1,845 1,405 2-1 / 2 1,250 2,130 1,815 ( 51 ) ( 60 ) ( 64 ) ( 7.0 ) ( 8.2 ) ( 6.2 ) ( 64 ) ( 5.6 ) ( 9.5 ) ( 8.1 ) 2 2-3 / 8 2-1 / 2 1,485 1,630 1,455 2-1 / 2 1,345 1,830 1,650 ( 51 ) ( 60 ) ( 64 ) ( 6.6 ) ( 7.3 ) ( 6.5 ) ( 64 ) ( 6.0 ) ( 8.1 ) ( 7.3 ) 3-1 / 4 3-5 / 8 2-1 / 2 2,705 2,970 2,310 3-1 / 4 1,905 2,795 2,515 ( 83 ) ( 92 ) ( 64 ) ( 12.0 ) ( 13.2 ) ( 10.3 ) ( 83 ) ( 8.5 ) ( 12.4 ) ( 11.2 ) 2-3 / 4 3-1 / 4 2-1 / 2 2,370 2,905 2,230 3-1 / 4 1,480 3,685 3,000 ( 70 ) ( 83 ) ( 64 ) ( 10.5 ) ( 12.9 ) ( 9.9 ) ( 83 ) ( 6.6 ) ( 16.4 ) ( 13.3 ) 4 4-1 / 2 2-1 / 2 3,245 3,970 3,020
( 102 ) ( 114 ) ( 64 ) ( 14.4 ) ( 17.7 ) ( 13.4 ) n / a n / a n / a n / a
3 / 4
3-1 / 4 4 2-1 / 2 2,245 2,750 2,970 9 n / a n / a n / a n / a ( 83 ) ( 102 ) ( 64 ) ( 10.0 ) ( 12.2 ) ( 13.2 ) 9
Table 21 — Hilti KB1 carbon steel factored resistance in the soffit of cracked lightweight concrete over metal deck 1 , 2 , 3 , 4 , 5 , 6 , 7
Installation per Figure 3 Installation per Figure 4
Nominal anchor diameter in .
3 / 8
1 / 2
5 / 8
Effective embedment in . ( mm )
Nominal embedment in . ( mm )
Min . conc . thickness 10 in . ( mm )
Min . conc . = 20 MPa f ́c
|
= 30 MPa f ́c
|
≥ 20 MPa f ́c
|
Tension - N r
|
Shear - V r
|
|
( 2,900 psi ) lb ( kN ) |
( 4,350 psi ) lb ( kN )" |
( 2,900 psi ) lb ( kN ) |
thickness 10 in . ( mm ) |
1-1 / 2 1-7 / 8 2-1 / 2 610 710 635 ( 38 ) ( 48 ) ( 64 ) ( 2.7 ) ( 3.2 ) ( 2.8 ) f ́c = 20 MPa ( 2,900 psi ) lb ( kN )
Tension - N r
f ́c = 30 MPa ( 4,350 psi ) lb ( kN )"
Shear - V r
f ́c ≥ 20 MPa ( 2,900 psi ) lb ( kN )
n / a n / a n / a n / a
2 2-3 / 8 2-1 / 2 1,195 1,390 1,405 2-1 / 2 945 1,100 1,780 ( 51 ) ( 60 ) ( 64 ) ( 5.3 ) ( 6.2 ) ( 6.2 ) ( 64 ) ( 4.2 ) ( 4.9 ) ( 7.9 ) 2 2-3 / 8 2-1 / 2 1,050 1,155 1,455 2-1 / 2 950 1,045 1,975 ( 51 ) ( 60 ) ( 64 ) ( 4.7 ) ( 5.1 ) ( 6.5 ) ( 64 ) ( 4.2 ) ( 4.6 ) ( 8.8 ) 3-1 / 4 3-5 / 8 2-1 / 2 1,915 2,105 2,310 3-1 / 4 1,350 1,480 3,045 ( 83 ) ( 92 ) ( 64 ) ( 8.5 ) ( 9.4 ) ( 10.3 ) ( 83 ) ( 6.0 ) ( 6.6 ) ( 13.5 ) 2-3 / 4 3-1 / 4 2-1 / 2 1,900 2,325 2,230 3-1 / 4 1,185 1,450 2,545 ( 70 ) ( 83 ) ( 64 ) ( 8.5 ) ( 10.3 ) ( 9.9 ) ( 83 ) ( 5.3 ) ( 6.4 ) ( 11.3 ) 4 4-1 / 2 2-1 / 2 2,440 2,985 3,020
( 102 ) ( 114 ) ( 64 ) ( 10.9 ) ( 13.3 ) ( 13.4 ) n / a n / a n / a n / a
3.3.9
3 / 4
3-1 / 4 4 2-1 / 2 1,965 2,405 2,970 8 , 9 n / a n / a n / a n / a ( 83 ) ( 102 ) ( 64 ) ( 8.7 ) ( 10.7 ) ( 13.2 ) 8 , 9
1 See Section 3.1.8 to convert design strength value to ASD value . 2 Linear interpolation between embedment depths and concrete compressive strengths is not permitted . 3 Tabular value is for one anchor per flute . Minimum spacing along the length of the flute is 3 x h ef
( effective embedment ). 4 Tabular values are lightweight concrete and no additional reduction factor for lightweight concrete is needed . 5 Minimum edge distance is 3 x h ef
( effective embedment ). 6 Comparison of the tabular values to the steel strength is not necessary . Tabular values control . 7 Tabular values are for static loads only . Seismic design is not permitted for uncracked concrete . For seismic tension loads , multiply cracked concrete tabular values in tension only by α N , seis
=
0.75 , except for 3 / 4 x 4-3 / 4 h ef where α N , seis
= 0.67 . See Section 3.1.8 for additional information on seismic applications . 8 For the 3 / 4-inch diameter anchor , an additional factor for seismic shear , α V , seis
= 0.85 , must be applied to the cracked concrete tabular values for seismic conditions . See Section 3.1.8 for additional information on seismic applications . 9 For the 3 / 4x12 KB1 , multiply tabular value by 0.92 . 10 Minimum concrete thickness over the upper flute when anchor is installed in the lower flute . See Figure 3 and 4 .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.9 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
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