Anchor Fastening Technical Guide , Edition 22
Table 4 — Design strength for steel failure of common threaded rods 1 , 5
Grade A36 threaded rod
ASTM A 193 B7 or ASTM F1554 Gr . 105 threaded rod
ASTM A 307 , Grade A threaded rod
Nominal rod diameter in . |
Tensile 2
φN sa , rod or
φN sa , eq , rod lb ( kN )
|
Shear 3
φV sa , rod lb ( kN )
|
Seismic Shear 4
φV sa , eq , rod lb ( kN )
|
Tensile 2
φN sa , rod or
φN sa , eq , rod lb ( kN )
|
Shear 3
φV sa , rod lb ( kN )
|
Seismic Shear 4
φV sa , eq , rod lb ( kN )
|
Tensile 2
φN sa , rod or
φN sa , eq , rod lb ( kN )
|
Shear 3
φV sa , rod lb ( kN )
|
Seismic Shear 4
φV sa , eq , rod lb ( kN )
|
1 / 4 |
1,390 ( 6.2 ) |
720 ( 3.2 ) |
505 ( 2.2 ) |
3,000 ( 13.3 ) |
1,550 ( 6.9 ) |
1,085 ( 4.8 ) |
1,425 ( 6.3 ) |
740 ( 3.3 ) |
518 ( 2.3 ) |
3 / 8 |
3,395 ( 15.1 ) |
1,750 ( 7.8 ) |
1,225 ( 5.4 ) |
7,315 ( 32.5 ) |
3,780 ( 16.8 ) |
2,646 ( 11.8 ) |
3,490 ( 15.5 ) |
1,815 ( 8.1 ) |
1,271 ( 5.7 ) |
1 / 2 |
6,175 ( 27.5 ) |
3,210 ( 14.3 ) |
2,245 ( 10.0 ) |
13,315 ( 59.2 ) |
6,915 ( 30.8 ) |
4,841 ( 21.5 ) |
6,375 ( 28.4 ) |
3,315 ( 14.7 ) |
2,321 ( 10.3 ) |
5 / 8 |
9,835 ( 43.7 ) |
5,110 ( 22.7 ) |
3,575 ( 15.9 ) |
21,190 ( 94.3 ) |
11,020 ( 49.0 ) |
7,714 ( 34.3 ) |
10,165 ( 45.2 ) |
5,285 ( 23.5 ) |
3,700 ( 16.5 ) |
3 / 4 |
14,550 ( 64.7 ) |
7,565 ( 33.7 ) |
5,295 ( 23.6 ) |
31,405 ( 139.7 ) |
16,305 ( 72.5 ) |
11,414 ( 50.8 ) |
15,040 ( 66.9 ) |
7,820 ( 34.8 ) |
5,474 ( 24.3 ) |
1 See Section 3.1.8 for additional information on seismic applications . 2 Tensile values determined by static tension tests with фN sa
= ф A se , N f uta as noted in ACI 318 Chapter 17 . Only the largest size of threaded rod specified for each insert must be used for applications resisting seismic tension loads . 3 Shear values determined by static shear tests with фV sa
= ф 0.60 A se , V f uta as noted in ACI 318 Chapter 17 . Only the largest size of threaded rod specified for each insert must be used for applications resisting shear loads . 4 Seismic shear values determined by seismic shear tests with ф V sa
≤ ф 0.60 A se , V f uta as noted in ACI 318 , Chapter 17 . Only the largest size of threaded rod specified for each insert must be used for applications resisting seismic shear load .
5 Values are for the threaded rod only . The capacity of the insert must be also be determined from Table 5 . The design strength of concrete must be in accordance with ACI 318 Chapter 17 and Tables 2 to 3 as necessary . Compare the values ( threaded rod , inserts , and concrete ). The lesser of the values is to be used for the design .
Table 5 — Design strength for steel failure of KCM-WF and KCM-PD inserts 1
Design information
1 / 4 " -3 / 8 " 3 / 8 " -1 / 2 " 3 / 8 " -1 / 2 " -5 / 8 " 3 / 8 " -1 / 2 " -5 / 8 " -3 / 4 " WF and PD Only WF WF and PD WF and PD
|
Design steel strength of insert in tension ,
ϕN sa , insert lb ( kN )
|
5,315 ( 23.6 ) |
8,775 ( 39.0 ) |
10,920 ( 48.6 ) |
17,795 ( 79.2 ) |
|
Design seismic steel strength of insert in tension , 2
ϕN sa , insert , eq lb ( kN )
|
5,315 ( 23.6 ) |
8,775 ( 39.0 ) |
10,920 ( 48.6 ) |
17,795 ( 79.2 ) |
|
Design steel strength of insert in shear , 2
ϕV sa , insert lb ( kN )
|
1,775 ( 7.9 ) |
3,490 ( 15.5 ) |
5,785 ( 25.7 ) |
11,140 ( 49.6 ) |
|
Design seismic steel strength of insert in shear , 2
ϕV sa , insert , eq lb ( kN )
|
1,775 ( 7.9 ) |
3,490 ( 15.5 ) |
5,785 ( 25.7 ) |
11,140 ( 49.6 ) |
1 Values are for the inserts only . The capacity of the threaded rods must be also determined from Table 4 . The design strength of concrete must be in accordance with ACI 318 Chapter 17 and Tables 2 to 3 as necessary . Compare the values ( threaded rod , inserts , and concrete ). The lesser of the values is to be used for the design .
2 Only the largest size of threaded rod specified for each insert must be used for applications resisting seismic tension , static shear , and seismic shear loads .
3.3.15
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.15 KCM-WF / PD CAST-IN ANCHORS 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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