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aDhesiVe anchors
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14
TECH MANUAL – ADHESIVE ANCHORS ©2015 POWERS VOLUME 1 – 9/2015 – REV. G
STRENGTH DESIGN (SD)
Tension and Shear Design Strength Installed in Uncracked Concrete
(Bond or Concrete Strength)
Drilled with a Hammer-Drill and Carbide Bit in a Dry Hole Condition
110°F (43°C) Maximum Long-Term Service Temperature;
176°F (80°C) Maximum Short-Term Service Temperature
1,2,3,4,5,6,7,8,9
®
Nominal
Rod/Rebar
Size
(in. or #)
Embed.
Depth
h
ef
(in.)
Minimum Concrete Compressive Strength
f'c = 2,500 psi f'c = 3,000 psi f'c = 4,000 psi f'c = 6,000 psi f'c = 8,000 psi
Φ
Ncb
or
Φ
Na
Tension
(lbs.)
Φ
Vcb or
Φ
Vcp
Shear
(lbs.)
Φ
Ncb
or
Φ
Na
Tension
(lbs.)
Φ
Vcb or
Φ
Vcp
Shear
(lbs.)
Φ
Ncb
or
Φ
Na
Tension
(lbs.)
Φ
Vcb or
Φ
Vcp
Shear
(lbs.)
Φ
Ncb
or
Φ
Na
Tension
(lbs.)
Φ
Vcb or
Φ
Vcp
Shear
(lbs.)
Φ
Ncb
or
Φ
Na
Tension
(lbs.)
Φ
Vcb or
Φ
Vcp
Shear
(lbs.)
3/8 or #3
2-3/8 1,755 1,890 1,795 1,935 1,860 2,000 1,950 2,100 2,020 2,175
3 2,220 3,150 2,270 3,480 2,350 4,075 2,465 5,090 2,550 5,495
4-1/2 3,330 5,750 3,400 6,355 3,520 7,440 3,700 7,965 3,825 8,245
1/2 or #4
2-3/4 2,565 2,895 2,620 3,200 2,710 3,750 2,845 4,680 2,950 5,480
4 3,730 5,455 3,810 6,025 3,945 7,055 4,140 8,810 4,285 9,235
6 5,595 9,935 5,715 10,975 5,920 12,745 6,215 13,380 6,430 13,850
10 9,320 20,080 9,530 20,520 9,865 21,245 10,355 22,300 10,720 23,085
5/8 or #5
3-1/8 3,485 3,785 3,565 4,180 3,690 4,895 3,870 6,110 4,010 7,155
5 5,575 8,350 5,700 9,230 5,900 10,805 6,195 13,345 6,415 13,810
7-1/2 8,365 15,210 8,550 16,810 8,850 19,065 9,295 20,015 9,620 20,720
12-1/2 13,945 30,030 14,250 30,695 14,750 31,775 15,490 33,360 16,030 34,530
3/4 or #6
3-1/2 4,380 4,775 4,470 5,275 4,615 6,180 4,825 7,715 4,985 9,035
6 7,745 11,625 7,920 12,845 8,195 15,040 8,605 18,535 8,905 19,185
9 11,620 21,170 11,875 23,395 12,295 26,480 12,905 27,800 13,360 28,775
15 19,365 41,710 19,795 42,635 20,490 44,130 21,510 46,330 22,265 47,960
7/8 or #7
3-1/2 4,355 4,930 4,450 5,455 4,595 6,390 4,805 7,975 4,960 9,340
7 10,245 14,475 10,470 15,995 10,840 18,725 11,380 23,385 11,780 25,370
10-1/2 15,365 26,360 15,705 29,130 16,255 34,105 17,065 36,760 17,665 38,050
17-1/2 25,610 55,160 26,175 56,380 27,095 58,360 28,445 61,270 29,445 63,420
1 or #8
4 5,500 6,115 5,685 6,875 5,870 8,045 6,140 10,050 6,340 11,765
8 13,035 17,495 13,325 19,335 13,795 22,635 14,480 28,265 14,990 32,285
12 19,555 31,865 19,985 35,210 20,690 41,225 21,720 46,785 22,485 48,425
20 32,590 67,895 33,310 71,750 34,480 74,270 36,200 77,970 37,475 80,710
#9
4-1/2 6,665 7,110 6,930 8,080 7,175 9,495 7,510 11,855 7,755 13,880
9 16,105 20,710 16,465 22,885 17,040 26,795 17,890 33,460 18,520 39,170
13-1/2 24,160 37,720 24,695 41,685 25,560 48,805 26,835 57,800 27,780 59,830
22-1/2 40,265 80,350 41,155 88,645 42,600 91,760 44,725 96,335 46,295 99,715
1-1/4
5 8,115 8,170 8,445 9,285 8,820 11,050 9,230 13,800 9,530 16,155
10 19,475 24,005 19,905 26,525 20,605 31,055 21,635 38,780 22,395 45,405
15 29,215 43,715 29,860 48,310 30,910 56,560 32,450 69,890 33,590 72,345
25 48,690 93,160 49,765 102,950 51,515 110,955 54,085 116,485 55,985 120,580
#10
5 8,020 8,160 8,345 9,270 8,715 11,030 9,120 13,775 9,415 16,130
10 19,475 24,045 19,905 26,570 20,605 31,110 21,635 38,850 22,395 45,485
15 29,215 43,800 29,860 48,400 30,910 56,665 32,450 69,890 33,590 72,345
25 48,690 93,300 49,765 103,100 51,515 110,955 54,085 116,485 55,985 120,580
■ - Concrete Breakout Strength ■ - Bond Strength/Pryout Strength
1. Tabular values are provided for illustration and are applicable for single anchors installed in uncracked normal-weight concrete with minimum slab thickness,
h
a
= h
min
, and with the following conditions:
- c
a1
is greater than or equal to the critical edge distance, c
ac
- c
a2
is greater than or equal to 1.5 times c
a1
.
2. Calculations were performed according to ACI 318-11 Appendix D and ICC-ES AC308. The load level corresponding to the failure mode listed [Concrete breakout strength, bond strength/
pryout strength] must be checked against the tabulated steel strength of the corresponding threaded rod or rebar size and type, the lowest load level controls.
3. Strength reduction factors (
f
) for concrete breakout strength are based on ACI 318 Section 9.2 for load combinations. Condition B was assumed.
4. Strength reduction factors (
f
) for bond strength are determined from reliability testing and qualification in accordance with ICC-ES AC308 and are tabulated in this product information
and in ESR-2583.
5. Tabular values are permitted for static loads only, seismic loading is not considered with these tables. Periodic special inspection must be performed where required by code, see ESR-2583
for applicable information.
6. For anchors subjected to tension resulting from sustained loading a supplemental check must be performed according to ACI 318-11 D.4.1.2.
7. For designs that include combined tension and shear, the interaction of tension and shear loads must be calculated in accordance with ACI 318-11 Appendix D.
8. Interpolation is not permitted to be used with the tabular values. For intermediate base material compressive strengths, please see ACI 318-11 Appendix D, ICC-ES AC308 and information
included in this product supplement. For other design conditions including seismic considerations please see ACI 318-11 Appendix D and ICC-ES AC308 and ESR-2583.
9. Long term concrete temperatures are roughly constant over significant periods of time. Short-term elevated temperatures are those that occur over brief intervals, e.g. as a result of
diurnal cycling.