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13
aDhesiVe anchors
STRENGTH DESIGN (SD)
TECH MANUAL – ADHESIVE ANCHORS ©2015 POWERS VOLUME 1 – 9/2015 – REV. G
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;
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.)
3/8 or #3
2-3/8 2,225 2,330 2,275 2,450 2,355 2,535 2,470 2,660 2,555 2,755
3 2,810 3,460 2,870 3,825 2,975 4,480 3,120 5,595 3,230 6,550
4-1/2 4,215 6,320 4,310 6,985 4,460 8,175 4,680 10,085 4,845 10,435
1/2 or #4
2-3/4 3,245 3,185 3,320 3,520 3,435 4,120 3,605 5,145 3,730 6,025
4 4,720 5,990 4,825 6,620 4,995 7,755 5,245 9,680 5,430 11,335
6 7,080 10,915 7,240 12,065 7,495 14,125 7,865 16,945 8,145 17,540
10 11,805 23,250 12,065 25,690 12,490 26,895 13,110 28,240 13,570 29,230
5/8 or #5
3-1/8 4,310 4,120 4,510 4,595 4,665 5,375 4,900 6,715 5,070 7,860
5 7,060 9,175 7,215 10,140 7,465 11,870 7,840 14,825 8,115 17,355
7-1/2 10,585 16,710 10,820 18,465 11,200 21,620 11,760 25,330 12,170 26,220
12-1/2 17,645 35,610 18,035 38,845 18,670 40,210 19,600 42,215 20,285 43,695
3/4 or #6
3-1/2 5,105 5,015 5,480 5,700 5,735 6,790 6,000 8,480 6,195 9,925
6 9,805 12,775 10,020 14,115 10,375 16,525 10,890 20,635 11,275 24,160
9 14,705 23,265 15,035 25,710 15,560 30,100 16,335 35,185 16,910 36,420
15 24,510 49,560 25,055 53,965 25,935 55,860 27,225 58,645 28,185 60,705
7/8 or #7
3-1/2 5,085 4,930 5,290 5,605 5,625 6,855 5,980 8,765 6,175 10,260
7 12,960 15,900 13,245 17,570 13,710 20,570 14,395 25,690 14,900 30,075
10-1/2 19,435 28,960 19,865 32,000 20,565 37,465 21,590 46,500 22,350 48,135
17-1/2 32,395 61,700 33,110 68,185 34,275 73,820 35,985 77,500 37,245 80,225
1 or #8
4 6,240 6,115 6,685 6,945 7,110 8,495 7,645 11,045 7,895 12,930
8 16,500 19,225 16,865 21,245 17,455 24,870 18,325 31,060 18,970 36,360
12 24,750 35,010 25,295 38,690 26,185 45,295 27,490 56,570 28,455 61,290
20 41,250 74,605 42,160 82,440 43,640 94,000 45,820 98,685 47,430 102,150
#9
4-1/2 7,445 7,110 8,105 8,080 8,615 9,880 9,350 13,025 9,655 15,250
9 20,385 22,755 20,835 25,145 21,570 29,440 22,645 36,765 23,440 43,045
13-1/2 30,580 41,450 31,255 45,805 32,355 53,630 33,965 66,970 35,160 75,730
22-1/2 50,965 88,290 52,095 97,570 53,920 114,230 56,610 121,930 58,600 126,215
1-1/4
5 8,720 8,170 9,555 9,285 10,495 11,355 11,450 15,085 11,870 17,755
10 24,660 26,380 25,205 29,150 26,090 34,130 27,390 42,620 28,350 49,895
15 36,985 48,045 37,805 53,090 39,130 62,155 41,085 77,625 42,525 90,880
25 61,645 102,380 63,005 113,140 65,220 132,460 68,470 147,480 70,875 152,660
#10
5 8,720 8,160 9,555 9,270 10,375 11,335 11,315 15,060 11,725 17,725
10 24,660 26,425 25,205 29,200 26,090 34,190 27,390 42,695 28,350 49,985
15 36,985 48,130 37,805 53,190 39,130 62,270 41,085 77,765 42,525 91,045
25 61,645 102,530 63,005 113,305 65,220 132,655 68,470 147,480 70,875 152,660
■ - 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.