Product Overview

11
Adhesives
TECHNICAL GUIDE – ADHESIVES ©2021 DEWALT – REV. F
A
NCHORS & FASTENERS
STRENGTH DESIGN (SD)
Steel Tension and Shear Design for Threaded Rod in Normal Weight Concrete
(For use with load combinations taken from ACI 318-14 Section 5.3)
CODE LISTED
ICC-ES ESR-2582
Design Information Symbol Units
Nominal Rod Diameter
1
(inch)
3/8 1/2 5/8 3/4 7/8 1 1-1/4
Threaded rod nominal outside diameter d
a
inch
(mm)
0.375
(9.5)
0.500
(12.7)
0.625
(15.9)
0.750
(19.1)
0.875
(22.2)
1.000
(25.4)
1.250
(31.8)
Threaded rod effective cross-sectional area A
se
inch
2
(mm
2
)
0.0775
(50)
0.1419
(92)
0.2260
(146)
0.3345
(216)
0.4617
(298)
0.6057
(391)
0.9691
(625)
ASTM A 36
and
ASTM F 1554
Grade 36
Nominal strength as governed by
steel strength (for a single anchor)
N
sa
lbf
(kN)
4,495
(20.0)
8,230
(36.6)
13,110
(58.3)
19,400
(86.3)
26,780
(119.1)
35,130
(156.3)
56,210
(250.0)
V
sa
lbf
(kN)
2,695
(12.0)
4,940
(22.0)
7,860
(35.0)
11,640
(51.8)
16,070
(71.4)
21,080
(93.8)
33,725
(150.0)
Reduction factor for seismic shear α V
,seis
- 0.80 0.80 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
2
φ
- 0.75
Strength reduction factor for shear
2
φ
- 0.65
ASTM F 1554
Grade 55
Nominal strength as governed by
steel strength(for a single anchor)
N
sa
lbf
(kN)
5,810
(25.9)
10,640
(47.3)
16,950
(75.4)
25,085
(111.6)
34,625
(154.0)
45,425
(202.0)
72,680
(323.3)
Vsa
lbf
(kN)
3,485
(15.5)
6,385
(28.4)
10,170
(45.2)
15,050
(67.0)
20,775
(92.4)
27,255
(121.2)
43,610
(194.0)
Reduction factor for seismic shear α V
,seis
- 0.80 0.80 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
2
φ
- 0.75
Strength reduction factor for shear
2
φ
- 0.65
ASTM A 193
Grade B7
and
ASTM F 1554
Grade 105
Nominal strength as governed by
steel strength (for a single anchor)
N
sa
lbf
(kN)
9,685
(43.1)
17,735
(78.9)
28,250
(125.7)
41,810
(186.0)
57,710
(256.7)
75,710
(336.8)
121,135
(538.8)
V
sa
lbf
(kN)
5,815
(25.9)
10,640
(7.3)
16,950
(75.4)
25,085
(111.6)
34,625
(154.0)
45,425
(202.1)
72,680
(323.3)
Reduction factor for seismic shear α V
,seis
- 0.80 0.80 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
2
φ
- 0.75
Strength reduction factor for shear
2
φ
- 0.65
ASTM A 449
Nominal strength as
governed by steel strength
(for a single anchor)
N
sa
lbf
(kN)
9,300
(41.4)
17,025
(75.7)
27,120
(120.6)
40,140
(178.5)
55,905
(248.7)
72,685
(323.3)
101,755
(452.6)
V
sa
lbf
(kN)
5,580
(24.8)
10,215
(45.4)
16,270
(72.4)
24,085
(107.1)
33,540
(149.2)
43,610
(194.0)
61,050
(271.6)
Reduction factor for seismic shear α V
,seis
- 0.80 0.80 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
2
φ
- 0.75
Strength reduction factor for shear
2
φ
- 0.65
ASTM F 593
CW Stainless
(Types 304
and 316)
Nominal strength as governed by
steel strength (for a single anchor)
N
sa
lbf
(kN)
7,750
(34.5)
14,190
(63.1)
22,600
(100.5)
28,430
(126.5)
39,245
(174.6)
51,485
(229.0)
82,370
(366.4)
V
sa
lbf
(kN)
4,650
(20.7)
8,515
(37.9)
13,560
(60.3)
17,060
(75.9)
23,545
(104.7)
30,890
(137.4)
49,425
(219.8)
Reduction factor for seismic shear α V
,seis
- 0.70 0.70 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
3
φ
- 0.65
Strength reduction factor for shear
3
φ
- 0.60
ASTM A 193
Grade B8/B8M,
Class 1
Stainless
(Types 304
and 316)
Nominal strength as governed by
steel strength (for a single anchor)
4
N
sa
lbf
(kN)
4,420
(19.7)
8,090
(36.0)
12,880
(57.3)
19,065
(84.8)
26,315
(117.1)
34,525
(153.6)
55,240
(245.7)
V
sa
lbf
(kN)
2,650
(11.8)
4,855
(21.6)
7,730
(34.4)
11,440
(50.9)
15,790
(70.2)
20,715
(92.1)
33,145
(147.4)
Reduction factor for seismic shear α V
,seis
- 0.70 0.70 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
2
φ
-
0.75
Strength reduction factor for shear
2
φ
-
0.65
ASTM A 193
Grade B8/
B8M2,
Class 2B
Stainless
(Types 304
and 316)
Nominal strength as governed by
steel strength (for a single anchor)
N
sa
lbf
(kN)
7,365
(32.8)
13,480
(60.0)
21,470
(95.5)
31,775
(141.3)
43,860
(195.1)
57,545
(256.0)
92,065
(409.5)
V
sa
lbf
(kN)
4,420
(19.7)
8,085
(36.0)
12,880
(57.3)
19,065
(84.8)
26,315
(117.1)
34,525
(153.6)
55,240
(245.7)
Reduction factor for seismic shear α V
,seis
- 0.70 0.70 0.80 0.80 0.80 0.80 0.80
Strength reduction factor for tension
2
φ
- 0.75
Strength reduction factor for shear
2
φ
- 0.65
For SI: 1 inch = 25.4 mm, 1 lbf = 4.448 N. For pound-inch units: 1 mm = 0.03937 inches, 1 N = 0.2248 lbf.
1. Values provided for steel element material types are based on minimum specified strengths and calculated in accordance with ACI 318-14 Eq. 17.4.1.2 and Eq. 17.5.1.2b or ACI 318-11 Eq.
(D-2) and Eq. (D-29), as applicable, except where noted. Nuts and washers must be appropriate for the rod. Nuts must have specified proof load stresses equal to or greater than the minimum
tensile strength of the specified threaded rod.
2. The tabulated value of φ applies when the load combinations of Section 1605.2 of the IBC, ACI 318-14 5.3 or ACI 318-11 9.2, as applicable, are used in accordance with ACI 318-14 17.3.3
or ACI 318-11 D.4.3, as applicable. If the load combinations of ACI 318-11 Appendix C are used, the appropriate value of φ must be determined in accordance with ACI 318 D.4.4. Values
correspond to ductile steel elements.
3. The tabulated value of φ applies when the load combinations of Section 1605.2 of the IBC, ACI 318-14 5.3 or ACI 318-11 9.2, as applicable, are used in accordance with ACI 318-14 17.3.3
or ACI 318-11 D.4.3, as applicable. If the load combinations of ACI 318-11 Appendix C are used, the appropriate value of φ must be determined in accordance with ACI 318 D.4.4. Values
correspond to brittle steel elements
4. In accordance with ACI 318-14 17.4.1.2 and 17.5.1.2 or ACI 318-11 D.5.1.2 and D.6.1.2, as applicable, the calculated values for nominal tension and shear strength for ASTM A193 Grade
B8/B8M Class 1 stainless steel threaded rods are based on limiting the specified tensile strength of the anchor steel to 1.9fy or 57,000 psi (393 MPa).