pdf-doc
www.powers.com
15
aDhesiVe anchors
STRENGTH DESIGN (SD)
TECH MANUAL – ADHESIVE ANCHORS ©2015 POWERS VOLUME 1 – 9/2015 – REV. G
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
75°F (24°C) Maximum Long-Term Service Temperature;
104°F (40°C) Maximum Short-Term Service Temperature
1,2,3,4,5,6,7,8
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 2,520 2,360 2,760 2,680 3,030 3,280 3,320 4,355 3,545 5,325
4 4,420 4,785 4,670 5,435 4,835 6,650 5,075 8,830 5,255 10,555
6 6,855 9,455 7,005 10,740 7,255 13,135 7,615 16,400 7,880 16,975
10 11,425 21,650 11,680 23,930 12,090 26,035 12,690 27,335 13,135 28,295
5/8 or #5
3-1/8 2,910 2,940 3,025 3,340 3,220 4,085 3,515 5,430 3,745 6,640
5 5,870 7,135 6,000 8,105 6,210 9,910 6,520 13,165 6,750 14,540
7-1/2 8,805 14,090 9,000 16,005 9,315 19,575 9,780 21,070 10,125 21,810
12-1/2 14,675 31,610 15,000 32,310 15,530 33,445 16,305 35,115 16,875 36,345
3/4 or #6
3-1/2 3,375 3,580 3,500 4,070 3,720 4,980 4,050 6,610 4,305 8,085
6 7,875 9,710 8,050 11,035 8,330 13,495 8,745 17,925 9,055 19,500
9 11,815 19,185 12,075 21,795 12,500 26,655 13,120 28,260 13,580 29,255
15 19,690 42,405 20,125 43,340 20,830 44,865 21,870 47,100 22,635 48,755
7/8 or #7
3-1/2 3,265 3,525 3,380 4,000 3,575 4,895 3,875 6,500 4,105 7,950
7 10,095 11,860 10,315 13,475 10,680 16,485 11,210 21,895 11,605 24,995
10-1/2 15,140 23,430 15,475 26,620 16,020 32,555 16,815 36,220 17,410 37,495
17-1/2 25,235 54,350 25,790 55,550 26,700 57,505 28,030 60,370 29,015 62,490
1 or #8
4 4,240 4,365 4,390 4,960 4,645 6,065 5,030 8,060 5,330 9,855
8 12,500 14,105 13,475 16,025 13,950 19,600 14,645 26,035 15,160 31,845
12 19,775 27,860 20,210 31,655 20,920 38,715 21,965 47,310 22,735 48,970
20 32,960 65,755 33,685 72,560 34,870 75,105 36,610 78,850 37,895 81,620
#9
4-1/2 5,275 5,080 5,475 5,770 5,785 7,060 6,265 9,375 6,630 11,465
9 14,920 16,465 16,340 18,710 17,655 22,880 18,535 30,390 19,185 37,170
13-1/2 25,030 32,530 25,580 36,955 26,480 45,200 27,800 59,875 28,775 61,980
22-1/2 41,715 76,740 42,635 87,190 44,135 95,055 46,335 99,795 47,960 103,300
1-1/4
5 6,175 5,835 6,765 6,630 7,190 8,110 7,785 10,775 8,240 13,175
10 17,470 18,845 19,140 21,410 21,795 26,185 22,880 34,780 23,685 42,540
15 30,900 37,220 31,580 42,285 32,690 51,720 34,320 68,695 35,525 76,520
25 51,500 87,850 52,635 99,810 54,485 117,355 57,200 123,205 59,210 127,530
#10
5 6,175 5,830 6,735 6,620 7,120 8,100 7,705 10,755 8,155 13,155
10 17,470 18,880 19,140 21,445 21,795 26,230 22,880 34,840 23,685 42,615
15 30,900 37,290 31,580 42,365 32,690 51,815 34,320 68,825 35,525 76,520
25 51,500 87,980 52,635 99,955 54,485 117,355 57,200 123,205 59,210 127,530
■ - 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 following methodology in 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. This
temperature range is not recognized by ACI 318-11 and does not meet the minimum temperature requirements from ACI 355.4 Table 8.1 and consequently is not
applicable to design under ACI 318-11 or current and past editions of the international building code (IBC). The tabulated values are provided for analysis and
evaluation of existing conditions only.
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 short-term static loads only, seismic loading is not considered with these tables.
6. 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.
7. 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.
8. 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.