Supplementary Document
ADHESIVES
www.powers.com
17
TECH MANUAL – ADHESIVES ©2016 POWERS VOLUME 1 – REV. M
STRENGTH DESIGN (SD)
Tension and Shear Design Strength for Threaded Rod and Reinforcing Bar
Installed in Uncracked Concrete (Bond or Concrete Strength)
Drilled with a Hammer-Drill and Carbide Bit in a Dry Hole Condition
162°F (72°C) Maximum Long-Term Service Temperature;
248°F (120°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
N
cb
or
φ
N
a
Tension
(lbs.)
φ
V
cb
or
φ
V
cp
Shear
(lbs.)
φ
N
cb
or
φ
N
a
Tension
(lbs.)
φ
V
cb
or
φ
V
cp
Shear
(lbs.)
φ
N
cb
or
φ
N
a
Tension
(lbs.)
φ
V
cb
or
φ
V
cp
Shear
(lbs.)
φ
N
cb
or
φ
N
a
Tension
(lbs.)
φ
V
cb
or
φ
V
cp
Shear
(lbs.)
φ
N
cb
or
φ
N
a
Tension
(lbs.)
φ
V
cb
or
φ
V
cp
Shear
(lbs.)
3/8 or #3
2-3/8 735 795 755 810 785 845 825 890 855 925
3 930 2,005 955 2,050 990 2,130 1,045 2,245 1,080 2,330
4-1/2 1,395 3,005 1,430 3,080 1,485 3,195 1,565 3,370 1,625 3,495
1/2 or #4
2-3/4 1,135 2,095 1,165 2,315 1,210 2,605 1,275 2,745 1,325 2,850
4 1,655 3,565 1,695 3,650 1,760 3,785 1,855 3,990 1,925 4,145
6 2,480 5,345 2,540 5,470 2,635 5,680 2,780 5,990 2,885 6,215
5/8 or #5
3-1/8 1,615 2,780 1,655 3,075 1,715 3,605 1,810 3,900 1,880 4,045
5 2,585 5,565 2,645 5,700 2,745 5,915 2,895 6,235 3,005 6,475
7-1/2 3,875 8,350 3,970 8,550 4,120 8,875 4,345 9,355 4,510 9,715
3/4 or #6
3-1/2 2,170 3,560 2,225 3,940 2,310 4,615 2,435 5,240 2,525 5,440
6 3,720 8,015 3,810 8,210 3,955 8,520 4,170 8,980 4,330 9,325
9 5,580 12,025 5,715 12,310 5,935 12,780 6,255 13,475 6,495 13,985
7/8 or #7
3-1/2 2,265 3,725 2,315 4,120 2,400 4,830 2,520 5,425 2,610 5,620
7 5,065 10,910 5,185 11,170 5,385 11,600 5,675 12,225 5,890 12,690
10-1/2 7,600 16,365 7,780 16,760 8,075 17,395 8,515 18,340 8,840 19,035
1 or #8
4 2,700 4,555 2,760 5,035 2,860 5,905 3,005 6,465 3,110 6,695
8 5,980 12,810 6,120 13,185 6,355 13,690 6,700 14,430 6,955 14,980
12 8,970 19,315 9,185 19,780 9,535 20,535 10,050 21,645 10,435 22,470
#9
4 3,060 5,200 3,130 5,750 3,240 6,740 3,400 7,325 3,520 7,580
8 6,800 14,650 6,965 15,000 7,230 15,575 7,620 16,415 7,915 17,045
12 10,205 21,975 10,450 22,505 10,845 23,360 11,435 24,625 11,870 25,565
■ - 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 318-14 Ch.17 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 (
φ
) for concrete breakout strength are based on ACI 318-14 Section 5.3 for load combinations. Condition B was assumed.
4. Strength reduction factors (
φ
) 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-2582.
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-2582
for applicable information.
6. For anchors subjected to tension resulting from sustained loading a supplemental check must be performed according to ACI 318-14 17.3.1.2.
7. For designs that include combined tension and shear, the interaction of tension and shear loads must be calculated in accordance with ACI 318-14 Ch.17.
8. Interpolation is not permitted to be used with the tabular values. For intermediate base material compressive strengths, please see ACI 318-14 Ch.17, ICC-ES AC308 and information
included in this product supplement. For other design conditions including seismic considerations please see ACI 318-14 Ch.17 and ICC-ES AC308 and ESR-2582.
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.