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aDhesiVe anchors
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TECH MANUAL – ADHESIVE ANCHORS ©2015 POWERS VOLUME 1 – 9/2015 – REV. G
STRENGTH DESIGN (SD)
Tension and Shear Design Strength Installed in Cracked 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;
140°F (60°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.)
1/2 or #4
2-3/4 1,615 2,275 1,655 2,515 1,710 2,945 1,795 3,675 1,860 4,005
4 2,350 4,280 2,405 4,730 2,490 5,360 2,615 5,630 2,705 5,825
6 3,530 7,600 3,605 7,770 3,735 8,040 3,920 8,440 4,055 8,740
10 5,880 12,665 6,010 12,945 6,220 13,400 6,535 14,070 6,760 14,565
5/8 or #5
3-1/8 1,890 2,940 1,930 3,280 2,000 3,840 2,100 4,525 2,175 4,680
5 3,025 6,515 3,090 6,660 3,200 6,895 3,360 7,235 3,480 7,490
7-1/2 4,535 9,770 4,640 9,990 4,800 10,340 5,040 10,855 5,215 11,235
12-1/2 7,560 16,285 7,730 16,645 8,000 17,230 8,400 18,090 8,695 18,725
3/4 or #6
3-1/2 2,175 3,580 2,265 4,070 2,370 4,850 2,480 5,340 2,560 5,515
6 4,050 8,730 4,140 8,920 4,290 9,235 4,500 9,695 4,660 10,035
9 6,080 13,090 6,215 13,380 6,430 13,850 6,750 14,545 6,990 15,055
15 10,130 21,820 10,355 22,305 10,720 23,085 11,255 24,240 11,650 25,090
7/8 or #7
3-1/2 2,045 3,525 2,125 4,000 2,260 4,865 2,400 5,170 2,480 5,340
7 5,205 11,205 5,320 11,455 5,505 11,855 5,780 12,450 5,980 12,885
10-1/2 7,805 16,810 7,975 17,180 8,255 17,785 8,670 18,670 8,975 19,330
17-1/2 13,010 28,015 13,295 28,635 13,760 29,640 14,450 31,120 14,955 32,215
1 or #8
4 2,650 4,365 2,755 4,960 2,930 6,065 3,150 6,780 3,250 7,005
8 6,795 13,730 6,945 14,960 7,190 15,485 7,550 16,260 7,815 16,830
12 10,195 21,955 10,420 22,440 10,785 23,230 11,325 24,390 11,720 25,245
20 16,990 36,595 17,365 37,405 17,975 38,715 18,870 40,645 19,535 42,075
#9
4-1/2 3,290 5,080 3,420 5,770 3,635 7,060 3,945 8,495 4,075 8,775
9 8,600 16,255 8,790 17,960 9,100 19,600 9,555 20,575 9,890 21,300
13-1/2 12,900 27,790 13,185 28,405 13,650 29,400 14,330 30,865 14,835 31,950
22-1/2 21,505 46,315 21,980 47,340 22,750 49,000 23,885 51,445 24,725 53,250
1-1/4
5 4,090 5,835 4,250 6,630 4,520 8,110 4,930 10,620 5,110 11,010
10 10,620 18,840 10,855 20,820 11,235 24,200 11,795 25,405 12,210 26,295
15 15,930 34,305 16,280 35,065 16,850 36,295 17,690 38,105 18,315 39,445
25 26,545 57,175 27,135 58,440 28,085 60,495 29,485 63,510 30,525 65,740
#10
5 4,045 5,830 4,205 6,620 4,465 8,100 4,870 10,495 5,050 10,880
10 10,620 18,875 10,855 20,860 11,235 24,200 11,795 25,405 12,210 26,295
15 15,930 34,305 16,280 35,065 16,850 36,295 17,690 38,105 18,315 39,445
25 26,545 57,175 27,135 58,440 28,085 60,495 29,485 63,510 30,525 65,740
■ - Concrete Breakout Strength ■ - Bond Strength/Pryout Strength
1. Tabular values are provided for illustration and are applicable for single anchors installed in cracked 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.