Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete *
ET-HP® Installation Information and Additional Data for Threaded Rod and Rebar in Normal-Weight Concrete1 Characteristic
Symbol
Units
Nominal Anchor Diameter (in.) / Rebar Size 3/8 / #3
1/2 / #4
5/8 / #5
3/4 / #6
7/8 / #7
1 / #8
1 1/4 / #10
5/8
3/4
7/8
1
1 1/8
1 3/8
Installation Information Drill Bit Diameter
Permitted Embedment Depth Range
Minimum
in.
Tinst
ft.-lb.
10
20
30
45
60
80
125
hef
in.
2 3/8
2 3/4
3 1/8
3 1/2
3 3/4
4
5
4 1/2
6
7 1/2
9
10 1/2
12
15
1/2
hef
in.
Minimum Concrete Thickness
hmin
in.
hef+ 5do
Critical Edge Distance2
cac
in.
See foonote 2
Minimum Edge Distance
cmin
in.
1 3/4
2 3/4
Minimum Anchor Spacing
smin
in.
3
6
Maximum
1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318-11. 2. cac = hef ( τk,uncr /1160)0.4 x [3.1 – 0.7(h/hef )], where: [h/hef ] ≤ 2.4 τk,uncr = the characteristic bond strength in uncracked concrete, given in the tables that follow ≤ kuncr ((hef x f'c)0.5/(∏ x da)) h = the member thickness (inches) hef = the embedment depth (inches)
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Adhesive Anchors
Maximum Tightening Torque
dhole
* See page 12 for an explanation of the load table icons.
64
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete
Characteristic
Symbol Units
*
IBC
ET-HP® Tension Strength Design Data for Threaded Rod in Normal-Weight Concrete1
Nominal Anchor Diameter (in.) 3/8
1/2
5/8
3/4
7/5
1
1 1/4
Ase
Minimum Tensile Stress Area
in.2
Tension Resistance of Steel — ASTM F1554, Grade 36 Threaded Rod
Tension Resistance of Steel — ASTM A193, Grade B7 Tension Resistance of Steel — Type 410 Stainless (ASTM A193, Grade B6)
Nsa
lb.
Tension Resistance of Steel — Type 304 and 316 Stainless (ASTM A193, Grade B8 & B8M)
φ
Strength Reduction Factor — Steel Failure
0.078
0.142
0.226
0.334
0.462
0.606
0.969
4,525
8,235
13,110
19,370
26,795
35,150
56,200
9,750
17,750
28,250
41,750
57,750
75,750
121,125
8,580
15,620
24,860
36,740
50,820
66,660
106,590
4,445
8,095
12,880
19,040
26,335
34,540
55,235
—
0.756
Concrete Breakout Strength in Tension (2,500 psi ≤ f'c ≤ 8,000 psi)
12
kuncr
—
24
Effectiveness Factor — Cracked Concrete
kcr
—
17
Strength Reduction Factor — Breakout Failure
φ
—
Effectiveness Factor — Uncracked Concrete
0.658
Bond Strength in Tension (2,500 psi ≤ f'c ≤ 8,000 psi)
12
Uncracked Concrete 2,3,4
Cracked Concrete 2,3,4
Permitted Embedment Depth Range
Minimum Maximum
Characteristic Bond Strength5,9,10,11,12,13 Permitted Embedment Depth Range
SD
τk,uncr
Characteristic Bond Strength
5,13
Minimum Maximum
psi
hef
in.
τk,cr
psi
hef
in.
390
380
370
360
350
335
315
2 3/8
2 3/4
3 1/8
3 1/2
3 3/4
4
5
4 1/2
6
7 1/2
9
10 1/2
12
15
160
200
160
205
190
165
140
2 3/8
2 3/4
3 1/8
3 1/2
3 3/4
4
5
4 1/2
6
7 1/2
9
10 1/2
12
15
Adhesive Anchors
Steel Strength in Tension
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Bond Strength in Tension — Bond Strength Reduction Factors for Periodic Special Inspection Strength Reduction Factor — Dry Concrete
φdry
—
0.657
Strength Reduction Factor — Water-Saturated Concrete
φsat
—
0.457
1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318-11. 2. Temperature Range: Maximum short-term temperature of 150°F (66ºC). Maximum long-term temperature of 110°F (43°C). 3. Short-term concrete temperatures are those that occur over short intervals (diurnal cycling). 4. Long-term concrete temperatures are constant temperatures over a significant time period. 5. For anchors that only resist wind or seismic loads, bond strengths may be multiplied by 2.70. 6. The value of φ applies when the load combinations of ACI 318 Section 9.2 are used. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.5 to determine the appropriate value of φ. 7. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.4 (c) for Condition B are met. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.5 to determine the appropriate value of φ. 8. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.4 (c) for Condition B are met. If the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.4 (c) for Condition A are met, refer to Section D.4.4 to determine the appropriate value of φ. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.5 to determine the appropriate value of φ.
9. For anchors installed in regions assigned to Seismic Design Category C, D, E or F, the bond strength values for 3/8" and 1 1/4" anchors must be multiplied by αN,seis = 0.78. 10. For anchors installed in regions assigned to Seismic Design Category C, D, E or F, the bond strength values for 1/2", 5/8" and 3/4" anchors must be multiplied by αN,seis = 0.85. 11. For anchors installed in regions assigned to Seismic Design Category C, D, E or F, the bond strength values for 7/8" anchors must be multiplied by αN,seis = 0.82. 12. For anchors installed in regions assigned to Seismic Design Category C, D, E or F, the bond strength values for 1" anchors must be multiplied by αN,seis = 0.70. 13. For applications where maximum short-term temperature is 110ºF (43ºC) and the maximum long-term temperature is 75°F (24°C), bond strengths may be multiplied by 3.50. No additional increase is permitted for anchors that only resist wind or seismic loads.
* See page 12 for an explanation of the load table icons.
65
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete
Characteristic
Symbol
Units
*
IBC
ET-HP® Tension Strength Design Data for Rebar in Normal-Weight Concrete1 Rebar Size #3
#4
#5
#6
#7
#8
#10
0.79
1.23
Steel Strength in Tension
Adhesive Anchors
Rebar
Minimum Tensile Stress Area
Ase
in2
0.11
0.2
0.31
0.44
0.6
Tension Resistance of Steel — Rebar (ASTM A615 Grade 60)
Nsa
lb.
9,900
18,000
27,900
39,600
54,000
Strength Reduction Factor – Steel Failure
φ
—
71,100 110,700
0.656
Concrete Breakout Strength in Tension (2,500 psi ≤ f'c ≤ 8,000 psi) Effectiveness Factor — Uncracked Concrete
kuncr
—
Effectiveness Factor — Cracked Concrete
kcr
—
17
Strength Reduction Factor — Breakout Failure
φ
—
0.658
SD
24
Bond Strength in Tension (2,500 psi ≤ f'c ≤ 8,000 psi)
τk,uncr
Characteristic Bond Strength5,9 Uncracked Concrete 2,3,4
Permitted Embedment Depth Range
Minimum
Maximum
Characteristic Bond Strength5,9 Cracked Concrete 2,3,4
Permitted Embedment Depth Range
Minimum
Maximum
psi
hef
in.
τk,cr
psi
hef
in.
370
360
350
335
325
315
295
2 3/8
2 3/4
3 1/8
3 1/2
3 3/4
4
5
4 1/2
6
7 1/2
9
10 1/2
12
15
130
140
155
165
180
190
215
2 3/8
2 3/4
3 1/8
3 1/2
3 3/4
4
5
4 1/2
6
7 1/2
9
10 1/2
12
15
φdry
—
0.657
Strength Reduction Factor — Water-saturated Concrete
φsat
—
0.457
1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318-11. 2. Temperature Range: Maximum short-term temperature of 150°F (66ºC). Maximum long-term temperature of 110°F (43ºC). 3. Short-term concrete temperatures are those that occur over short intervals (diurnal cycling). 4. Long-term concrete temperatures are constant temperatures over a significant time period. 5. For anchors that only resist wind or seismic loads, bond strengths may be multiplied by 2.70. 6. The value of φ applies when the load combinations of ACI 318 Section 9.2 are used. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.5 to determine the appropriate value of φ. 7. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.4 (c) for Condition B are met. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.5 to determine the appropriate value of φ. 8. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.4 (c) for Condition B are met. If the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.4 (c) for Condition A are met, refer to Section D.4.4 to determine the appropriate value of φ. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.5 to determine the appropriate value of φ. 9. For applications where maximum short-term temperature is 110ºF (43ºC) and the maximum long-term temperature is 75ºF (24ºC), bond strengths may be multiplied by 3.50. No additional increase is permitted for anchors that only resist wind or seismic loads.
* See page 12 for an explanation of the load table icons.
66
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Bond Strength in Tension - Bond Strength Reduction Factors for Periodic and Continuous Special Inspection Strength Reduction Factor — Dry Concrete
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete
Characteristic
Symbol Units
*
IBC
ET-HP® Shear Strength Design Data for Threaded Rod in Normal-Weight Concrete1
Nominal Anchor Diameter (in.) 3/8
1/2
5/8
3/4
7/8
1
1 1/4
Minimum Shear Stress Area Shear Resistance of Steel — ASTM F1554, Grade 36 Shear Resistance of Steel — ASTM A193, Grade B7 Shear Resistance of Steel — Type 410 Stainless (ASTM A193, Grade B6) Shear Resistance of Steel — Type 304 and 316 Stainless Threaded (ASTM A193, Grade B8 & B8M) Rod Reduction for Seismic Shear — ASTM F1554, Grade 36 Reduction for Seismic Shear — ASTM A193, Grade B7 Reduction for Seismic Shear — Stainless (ASTM A193, Grade B6) Reduction for Seismic Shear — Stainless (ASTM A193, Grade B8 & B8M) Strength Reduction Factor — Steel Failure
Ase
in.2
Vsa
lb.
SD αV,seis
—
φ
—
5
0.078 2,260 4,875 4,290
0.142 0.226 0.334 0.462 0.606 0.969 4,940 7,865 11,625 16,080 21,090 33,720 10,650 16,950 25,050 34,650 45,450 72,675 9,370 14,910 22,040 30,490 40,000 63,955
2,225
4,855
7,730
0.63 0.63 0.60 0.60
11,420 15,800 20,725 33,140 0.85 0.85 0.85 0.85 0.652
0.75 0.75 0.75 0.75
Concrete Breakout Strength in Shear Outside Diameter of Anchor Load Bearing Length of Anchor in Shear Strength Reduction Factor — Breakout Failure
do ℓe φ
in. in. —
0.375
0.5
0.625
0.75 hef 0.703
0.875
1
1.25
Adhesive Anchors
Steel Strength in Shear
Concrete Pryout Strength in Shear Coefficient for Pryout Strength Strength Reduction Factor — Pryout Failure
kcp φ
— —
1.0 for hef < 2.50"; 2.0 for hef ≥ 2.50" 0.704
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1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318-11. 2. The value of φ applies when the load combinations of ACI 318 Section 9.2 are used. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.4 to determine the appropriate value of φ. 3. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.3 (c) for Condition B are met. If the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.3 (c) for Condition A are met, refer to Section D.4.3 to determine the appropriate value of φ. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.4 to determine the appropriate value of φ. 4. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.3 (c) for Condition B are met. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.4 to determine the appropriate value of φ. 5. The values of Vsa are applicable for both cracked concrete and uncracked concrete. For anchors installed in regions assigned to Seismic Design Category C, D, E or F, Vsa must be multiplied by αV,seis for the corresponding anchor steel type.
* See page 12 for an explanation of the load table icons.
67
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete
Characteristic
Symbol
*
IBC
ET-HP® Shear Strength Design Data for Rebar in Normal-Weight Concrete1 Rebar Size
Units
#3
#4
#5
#6
#7
0.31 16,740
0.44 23,760 0.8 0.602
0.6 32,400
0.625
0.75 hef 0.703
0.875
#8
#10
Steel Strength in Shear
SD Ase Vsa
αV,seis5 φ
in.2 lb. — —
0.11 4,950
0.2 10,800 0.6
0.79 1.23 42,660 66,420 0.75
Concrete Breakout Strength in Shear Outside Diameter of Anchor Load-Bearing Length of Anchor in Shear Strength Reduction Factor — Breakout Failure
do ℓe φ
in. in. —
0.375
0.5
1
1.25
Concrete Pryout Strength in Shear Coefficient for Pryout Strength Strength Reduction Factor — Pryout Failure
kcp φ
— —
1.0 for hef < 2.50"; 2.0 for hef ≥ 2.50" 0.704
1. The information presented in this table is to be used in conjunction with the design criteria of ACI 318-11. 2. The value of φ applies when the load combinations of ACI 318 Section 9.2 are used. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.4 to determine the appropriate value of φ. 3. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.3 (c) for Condition B are met. If the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.3 (c) for Condition A are met, refer to Section D.4.3 to determine the appropriate value of φ. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.4 to determine the appropriate value of φ. 4. The value of φ applies when both the load combinations of ACI 318 Section 9.2 are used and the requirements of Section D.4.3 (c) for Condition B are met. If the load combinations of ACI 318 Appendix C are used, refer to Section D.4.4 to determine the appropriate value of φ. 5. The values of Vsa are applicable for both cracked concrete and uncracked concrete. For anchors installed in regions assigned to Seismic Design Category C, D, E or F, Vsa must be multiplied by αV,seis.
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Adhesive Anchors
Rebar
Minimum Shear Stress Area Shear Resistance of Steel — Rebar (ASTM A615 Grade 60) Reduction for Seismic Shear — Rebar (ASTM A615 Grade 60) Strength Reduction Factor — Steel Failure
* See page 12 for an explanation of the load table icons.
68
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Tension Design Strengths for Threaded Rod Anchors in Normal-Weight Concrete (f'c = 2,500 psi)
3/8
1/2
5/8
3/4
7/8
1
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
1 1/4
Tension Design Strength Based on Concrete or Bond (lb.)
Minimum Dimensions Minimum Dimensions for Uncracked for Cracked (in.) (in.)
Edge Distances = cac on all sides SDC A-B 6
SDC C-F 7,8
Edge Distances = 1 3/4" on one side and cac on three sides SDC A-B 6
SDC C-F 7,8
ha
cac
ha
cac
2 3/8 3
4 1/4
3 5/8
—
—
Uncracked Cracked Uncracked Cracked Uncracked Cracked Uncracked Cracked 710
—
415
—
465
—
270
—
4 7/8
4 1/2
4 7/8
2 1/4
895
365
525
215
440
305
255
180
4 1/2
6 3/8
6 3/4
785
320
410
455
240
265
1,065
—
680
—
705
—
450
—
6 1/2
4 1/8 6
2 1/4 —
550
5 1/4
6 3/8 —
1,345
2 3/4 4
6 1/2
3
1,550
810
985
515
635
565
405
360
6
8 1/2
9
8 1/2
3
2,320
1,215
1,480
775
590
850
375
540
3 1/8 5
6 1/4
4 3/4
6 1/4
3 5/8
8 1/8
7 1/2
8 1/8
3 5/8
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
3 1/2 6
7 1/4
7 1/4
4 3/8
9 3/4
5 1/4 9
9 3/4
4 3/8
9
12 3/4
13 1/2
12 3/4
3 3/4 7
8 1/8
5 5/8
11 3/8
10 1/2
10 1/2 4
14 7/8 9
8 12
SD 1,475
635
940
405
925
395
590
255
2,360
1,015
1,505
645
865
635
550
405
3,540
1,520
2,260
970
805
955
510
610
1,925
1,110
1,225
705
1,115
645
710
410
3,300
1,900
2,105
1,215
1,110
1,100
710
700
4,950
2,855
3,155
1,820
1,035
1,655
660
1,055
8 1/8
4 5/8 5
2,330
1,285
1,435
790
1,275
705
785
435
11 3/8
5
4,355
2,400
2,675
1,475
1,380
1,315
850
805
15 3/4 6
14 7/8 9
5 3/8
6,530
3,600
4,015
2,215
1,285
1,970
790
1,210
5 5/8
2,755
1,350
1,445
710
1,440
705
755
370
13
12
13
5 5/8
5,505
2,695
2,890
1,415
1,665
1,410
875
740
17
18
17
5 3/4
8,260
4,045
4,335
2,125
1,550
2,115
815
1,110
5
11 1/4
6 3/4
4,020
1,775
2,350
1,040
—
—
—
—
16 1/4
7 1/2 15
11 1/4
10
16 1/4
6 3/4
8,040
3,550
4,705
2,075
—
—
—
—
15
21 1/4
22 1/2
21 1/4
6 7/8
12,060
5,320
7,055
3,115
—
—
—
—
Adhesive Anchors
Rod Dia. (in.)
Nominal Embed. Depth (in.)
*
IBC
Tension Design Strength of Threaded Rod Steel (lb.)
Threaded Rod Dia. (in.)
ASTM F1554 GR 36
ASTM F1554 GR 55
3/8
3,370
4,360
7,270
1/2
6,175
7,990
13,315
5/8
9,835
12,715
21,190
18,645
21,190
9,660
3/4
14,530
18,790
31,315
27,555
31,315
14,280
7/8 1
20,095
25,990
43,315
38,115
43,315
19,750
26,365
34,090
56,815
49,995
56,815
25,905
1 1/4
42,150
54,505
90,845
79,945
90,845
41,425
ASTM F1554 GR 105
ASTM A193 B6
ASTM A193 B7
ASTM A193 B8/B8M
6,395
7,270
3,310
11,715
13,315
6,070
1. Tension design strength must be the lesser of the concrete, bond or threaded rod steel design strength. 2. Tension design strengths are based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and long-term temperature of 110°F. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted. 5. Strength reduction factor, f, is based on using a load combination from ACI 318-11 Section 9.2. 6. The tension design strength listed for SDC (Seismic Design Category) A-B may also be used in SDC C-F when the tension component of the strength-level seismic design load on the anchor does not exceed 20% of the total factored tension load on the anchor associated with the same load combination. 7. When designing anchorages in SDC C-F, the Designer shall consider the ductility requirements of ACI 318-11 Section D.3.3. Design strengths in Bold indicate that the anchor ductility requirements of D.3.3.4.3 (a)1 to 3 are satisfied when using ASTM F1554 Grade 36 threaded rod. Any other ductility requirements must be satisfied. 8. Tension design strengths in SDC C-F have been adjusted by 0.75 factor in accordance with ACI 318-11 Section D.3.3.4.4.
* See page 12 for an explanation of the load table icons.
69
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete (f'c = 2,500 psi) — Static Load Minimum Dimensions for Cracked (in.) ha cac — —
Allowable Tension Load Based on Concrete or Bond (lb.) Edge Distances = Edge Distances = 1 3/4" on one cac on all sides side and cac on three sides Uncracked Cracked Uncracked Cracked 505 — 330 —
4 7/8
4 1/2
4 7/8
2 1/4
640
260
315
220
4 1/2
6 3/8
6 3/4
395
295
325
5 1/4
760
—
505
—
1/2
6 1/2
4 1/8 6
2 1/4 —
960
2 3/4 4
6 3/8 — 6 1/2
3
1,105
580
455
405
6
8 1/2
9
8 1/2
3
1,655
870
420
605
6 1/4
4 3/4
6 1/4
3 5/8
1,055
455
660
280
5/8
3 1/8 5
8 1/8
7 1/2
8 1/8
3 5/8
1,685
725
620
455
1,085
575
680 460
3/8
Adhesive Anchors
2 3/8 3
Minimum Dimensions for Uncracked (in.) ha cac 4 1/4 3 5/8
3/4
7/8
1
1 1/4
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
2,530
3 1/2 6
7 1/4
5 1/4 9
7 1/4
4 3/8
1,375
795
795
9 3/4
9 3/4
4 3/8
2,355
1,355
795
785
9
12 3/4
13 1/2
12 3/4
3,535
2,040
740
1,180
3 3/4 7
8 1/8
5 5/8
8 1/8
4 5/8 5
1,665
920
910
505
11 3/8
10 1/2
11 3/8
5
3,110
1,715
985
940
10 1/2 4
14 7/8 9
15 3/4 6
14 7/8 9
5 3/8
4,665
2,570
920
1,405
5 5/8
1,970
965
1,030
505
8
13
12
13
5 5/8
3,930
1,925
1,190
1,005
12
17
18
17
5 3/4
5,900
2,890
1,105
1,510
5
11 1/4
11 1/4
6 3/4
2,870
1,270
—
—
10
16 1/4
7 1/2 15
16 1/4
6 3/4
5,745
2,535
—
—
15
21 1/4
22 1/2
21 1/4
6 7/8
8,615
3,800
—
—
Threaded Rod Dia. ASTM F1554 (in.) GR 36
Allowable Tension Load of Threaded Rod Steel (lb.) ASTM F1554 GR 55
ASTM F1554 GR 105
ASTM A193 B6
ASTM A193 B7
ASTM A193 B8/B8M
3/8
2,405
3,115
5,195
4,570
5,195
2,365
1/2
4,410
5,705
9,510
8,370
9,510
4,335
5/8
7,025
9,080
15,135
13,320
15,135
6,900
3/4
10,380
13,420
22,370
19,680
22,370
10,200
7/8 1
14,355
18,565
30,940
27,225
30,940
14,105
18,830
24,350
40,580
35,710
40,580
18,505
1 1/4
30,105
38,930
64,890
57,105
64,890
29,590
1. Allowable tension load must be the lesser of the concrete, bond or threaded rod steel load. 2. Allowable tension loads are calculated based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and long-term temperature of 110°F. Tension design strengths are converted to allowable tension loads using a conversion factor of a = 1.4. The conversion factor a is based on the load combination 1.2D + 1.6L assuming 50% dead load and 50% live load: 1.2(0.5) + 1.6(0.5) = 1.4. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted.
* See page 12 for an explanation of the load table icons.
70
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Nominal Rod Dia. Embed. Depth (in.) (in.)
*
IBC
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete (f'c = 2,500 psi) — Wind Load
Allowable Tension Load Based on Concrete or Bond (lb.) Edge Distances = Edge Distances = 1 3/4" on one cac on all sides side and cac on three sides Uncracked Cracked Uncracked Cracked
Nominal Embed. Depth (in.)
ha
cac
ha
4 1/4
3 5/8
—
—
425
—
280
—
3/8
2 3/8 3
4 7/8
4 1/2
4 7/8
2 1/4
535
220
265
185
4 1/2
6 3/8
6 3/4
245
275
640
—
425
—
1/2
6 1/2
4 1/8 6
2 1/4 —
330
5 1/4
6 3/8 —
805
2 3/4 4
6 1/2
3
930
485
380
340
6
8 1/2
9
8 1/2
3
1,390
730
355
510
6 1/4
4 3/4
6 1/4
3 5/8
885
380
555
235
5/8
3 1/8 5
8 1/8
7 1/2
8 1/8
3 5/8
1,415
610
520
380
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
2,125
910
485
575
3 1/2 6
7 1/4
5 1/4 9
7 1/4
4 3/8
1,155
665
670
385
9 3/4
4 3/8
1,980
1,140
665
660
2,970
1,715
620
995 425
7/8
1
1 1/4
9 3/4
cac
9
12 3/4
3 3/4 7
8 1/8
5 5/8
8 1/8
4 5/8 5
1,400
770
765
11 3/8
10 1/2
11 3/8
5
2,615
1,440
830
790
10 1/2 4
14 7/8 9
15 3/4 6
14 7/8 9
5 3/8
3,920
2,160
770
1,180
5 5/8
1,655
810
865
425
8
13
12
13
5 5/8
3,305
1,615
1,000
845
12
17
18
17
5 3/4
4,955
2,425
930
1,270
13 1/2
12 3/4
5
11 1/4
6 3/4
2,410
1,065
—
—
16 1/4
7 1/2 15
11 1/4
10
16 1/4
6 3/4
4,825
2,130
—
—
15
21 1/4
22 1/2
21 1/4
6 7/8
7,235
3,190
—
—
Adhesive Anchors
Minimum Dimensions for Cracked (in.)
Rod Dia. (in.)
3/4
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Minimum Dimensions for Uncracked (in.)
*
IBC
Allowable Tension Load of Threaded Rod Steel (lb.)
Threaded Rod Dia. (in.)
ASTM F1554 GR 36
ASTM F1554 GR 55
ASTM F1554 GR 105
ASTM A193 B6
ASTM A193 B7
ASTM A193 B8/B8M
3/8
2,020
2,615
4,360
3,835
4,360
1,985
1/2
3,705
4,795
7,990
7,030
7,990
3,640
5/8
5,900
7,630
12,715
11,185
12,715
5,795
3/4
8,720
11,275
18,790
16,535
18,790
8,570
7/8 1
12,055
15,595
25,990
22,870
25,990
11,850
15,820
20,455
34,090
29,995
34,090
15,545
1 1/4
25,290
32,705
54,505
47,965
54,505
24,855
1. Allowable tension load must be the lesser of the concrete, bond or threaded rod steel load. 2. Allowable tension loads are calculated based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and long-term temperature of 110°F. Tension design strengths are converted to allowable tension loads using a conversion factor of a = 1/0.6 = 1.67. The conversion factor a is based on the load combination assuming 100% wind load. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted.
* See page 12 for an explanation of the load table icons.
71
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete (f'c = 2,500 psi) — Seismic Load
3/8
1/2
5/8
3/4
7/8
1
1 1/4
Allowable Tension Load Based on Concrete or Bond (lb.) Nominal Minimum Dimensions Minimum Dimensions Edge Distances = 1 3/4" on one side for Uncracked for Cracked Edge Distances = cac on all sides Embed. and cac on three sides (in.) (in.) Depth 5 6,7 5 SDC A-B SDC C-F SDC A-B SDC C-F 6,7 (in.) ha cac ha cac Uncracked Cracked Uncracked Cracked Uncracked Cracked Uncracked Cracked — — 495 — 290 — 325 — 190 — 2 3/8 4 1/4 3 5/8 3
4 7/8
4 1/2
4 7/8
2 1/4
625
255
370
150
310
215
180
125
4 1/2
6 3/8
6 3/4
385
550
225
285
320
170
185
5 1/4
745
—
475
—
495
—
315
—
6 1/2
4 1/8 6
2 1/4 —
940
2 3/4 4
6 3/8 — 6 1/2
3
1,085
565
690
360
445
395
285
250
6
8 1/2
9
8 1/2
3
1,625
850
1,035
545
415
595
265
380
3 1/8 5
6 1/4
4 3/4
6 1/4
3 5/8
1,035
445
660
285
650
275
415
180
8 1/8
7 1/2
8 1/8
3 5/8
1,650
710
1,055
450
605
445
385
285
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
2,480
1,065
1,580
680
565
670
355
425
3 1/2 6
7 1/4
7 1/4
4 3/8
1,350
775
860
495
780
450
495
285
9 3/4
5 1/4 9
9 3/4
4 3/8
2,310
1,330
1,475
850
775
770
495
490
9
12 3/4
13 1/2
12 3/4
3,465
2,000
2,210
1,275
725
1,160
460
740
3 3/4 7
8 1/8
5 5/8
8 1/8
4 5/8 5
1,630
900
1,005
555
895
495
550
305
11 3/8
10 1/2
11 3/8
5
3,050
1,680
1,875
1,035
965
920
595
565
10 1/2 4
14 7/8 9
15 3/4 6
14 7/8 9
5 3/8
4,570
2,520
2,810
1,550
900
1,380
555
845
5 5/8
1,930
945
1,010
495
1,010
495
530
260
8
13
12
13
5 5/8
3,855
1,885
2,025
990
1,165
985
615
520
12
17
18
17
5 3/4
5,780
2,830
3,035
1,490
1,085
1,480
570
775
5
11 1/4
11 1/4
6 3/4
2,815
1,245
1,645
730
—
—
—
—
10
16 1/4
7 1/2 15
16 1/4
6 3/4
5,630
2,485
3,295
1,455
—
—
—
—
15
21 1/4
22 1/2
21 1/4
6 7/8
8,440
3,725
4,940
2,180
—
—
—
—
Allowable Tension Load of Threaded Rod Steel (lb.)
Threaded Rod Dia. (in.)
ASTM F1554 GR 36
ASTM F1554 GR 55
ASTM F1554 GR 105
ASTM A193 B6
ASTM A193 B7
ASTM A193 B8/B8M
3/8
2,360
3,050
5,090
4,475
5,090
2,315
1/2
4,325
5,595
9,320
8,200
9,320
4,250
5/8
6,885
8,900
14,835
13,050
14,835
6,760
3/4
10,170
13,155
21,920
19,290
21,920
9,995
7/8 1
14,065
18,195
30,320
26,680
30,320
13,825
18,455
23,865
39,770
34,995
39,770
18,135
1 1/4
29,505
38,155
63,590
55,960
63,590
29,000
1. Allowable tension load must be the lesser of the concrete, bond or threaded rod steel load. 2. Allowable tension loads are calculated based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and long-term temperature of 110°F. Tension design strengths are converted to allowable tension loads using a conversion factor of a = 1/0.7 = 1.43. The conversion factor a is based on the load combination assuming 100% seismic load. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted. 5. The allowable tension load listed for SDC (Seismic Design Category) A-B may also be used in SDC C-F when the tension component of the strength-level seismic design load on the anchor does not exceed 20% of the total factored tension load on the anchor associated with the same load combination. 6. When designing anchorages in SDC C-F, the Designer shall consider the ductility requirements of ACI 318-11 Section D.3.3. 7. Design strengths in Bold indicate that the anchor ductility requirements of D.3.3.4.3 (a)1 to 3 are satisfied when using ASTM F1554 Grade 36 threaded rod. Any other ductility requirements must be satisfied. 8. Allowable tension loads in SDC C-F have been adjusted by 0.75 factor in accordance with ACI 318-11 Section D.3.3.4.4.
* See page 12 for an explanation of the load table icons.
72
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Adhesive Anchors
Rod Dia. (in.)
*
IBC
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete Tension Design Strength Based on Concrete or Bond (lb.) Edge Distances = 1 3/4" on one side and cac on three sides
Edge Distances = cac on all sides SDC C-F7,8
SDC A-B6
SDC A-B6
SDC C-F7,8
ha
cac
ha
cac
Uncracked
Cracked
Uncracked
Cracked
Uncracked
Cracked
Uncracked
Cracked
2 3/8
4 1/4
3 5/8
—
—
670
—
500
—
445
—
335
—
3
4 7/8
4 1/2
4 7/8
2 1/4
845
295
635
220
420
250
315
190
4 1/2
6 3/8
6 3/4
6 3/8
2 1/4
1,270
440
950
330
390
375
295
280
2 3/4
5 1/4
4 1/8
—
—
1,010
—
755
—
675
—
505
—
4
6 1/2
6
6 1/2
3
1,465
575
1,100
430
610
410
455
310
6
8 1/2
9
8 1/2
3
2,200
865
1,650
650
565
615
425
460
3 1/8
6 1/4
4 3/4
6 1/4
3 5/8
1,390
615
1,040
460
885
390
660
295
5
8 1/8
7 1/2
8 1/8
3 5/8
2,220
985
1,665
735
820
625
615
470
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
3,330
1,475
2,500
1,105
760
940
570
705
7 1/4
4 1/4
1,805
895
1,355
670
1,060
525
795
395
#3
#4
#5
3 1/2 #6
7 1/4
5 1/4
SD
6
9 3/4
9
9 3/4
4 1/4
3,095
1,535
2,325
1,150
1,050
900
790
675
9
12 3/4
13 1/2
12 3/4
4 1/4
4,645
2,300
3,485
1,725
980
1,350
735
1,015
3 3/4
8 1/8
5 5/8
8 1/8
4 7/8
2,190
1,195
1,645
895
1,215
660
910
495
7
11 3/8
10 1/2
11 3/8
4 7/8
4,090
2,225
3,065
1,670
1,305
1,230
980
925
10 1/2
14 7/8
15 3/4
14 7/8
5 1/8
6,135
3,340
4,600
2,505
1,215
1,850
910
1,385
4
9
6
9
5 3/8
2,580
1,560
1,935
1,170
1,365
825
1,025
620
8
13
12
13
5 3/8
5,160
3,120
3,870
2,340
1,570
1,650
1,175
1,240
12
17
18
17
6 5/8
7,745
4,680
5,810
3,510
1,460
2,475
1,095
1,860 —
#7
#8
#10
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Minimum Dimensions for Cracked (in.)
Rebar Size
5
11 1/4
7 1/2
11 1/4
6 1/2
3,780
2,745
2,835
2,060
—
—
—
10
16 1/4
15
16 1/4
7
7,555
5,490
5,665
4,115
—
—
—
—
15
21 1/4
22 1/2
21 1/4
9 1/8
11,335
8,230
8,500
6,175
—
—
—
—
Tension Design Strength of Rebar Steel (lb.) ASTM A615 GR 60
ASTM A706 GR 60
#3
6,435
5,720
#4
11,700
10,400
#5
18,135
16,120
#6
25,740
22,880
#7
35,100
31,200
#8
46,215
41,080
#10
74,100
66,040
Adhesive Anchors
Rebar Nominal Embed. Size Depth (in.)
Minimum Dimensions for Uncracked (in.)
*
IBC
ET-HP® Tension Design Strengths for Rebar in Normal-Weight Concrete (f'c = 2,500 psi)
1. Tension design strength must be the lesser of the concrete, bond or rebar steel design strength. 2. Tension design strengths are based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and long-term temperature of 110°F. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted. 5. Strength reduction factor, f, is based on using a load combination from ACI 318-11 Section 9.2. 6. The tension design strength listed for SDC (Seismic Design Category) A-B may also be used in SDC C-F when the tension component of the strength-level seismic design load on the anchor does not exceed 20% of the total factored tension load on the anchor associated with the same load combination. 7. When designing anchorages in SDC C-F, the Designer shall consider the ductility requirements of ACI 318-11 Section D.3.3. 8. Tension design strengths in SDC C-F have been adjusted by 0.75 factor in accordance with ACI 318-11 Section D.3.3.4.4.
* See page 12 for an explanation of the load table icons.
73
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Rebar in Normal-Weight Concrete (f'c = 2,500 psi) — Static Load
Adhesive Anchors
#3
#4
#6
#8
#10
Rebar Size #3
Edge Distances = cac on all sides
Edge Distances = 1 3/4" on one side and cac on three sides
ha
cac
ha
cac
Uncracked
Cracked
Uncracked
3 5/8
—
—
480
—
320
—
3
4 7/8
4 1/2
4 7/8
2 1/4
605
210
300
180
4 1/2
6 3/8
6 3/4
6 3/8
2 1/4
905
315
280
270
2 3/4
5 1/4
4 1/8
—
—
720
—
480
—
4
6 1/2
6
6 1/2
3
1,045
410
435
295
6
8 1/2
9
8 1/2
3
1,570
620
405
440
6 1/4
3 5/8
995
440
630
280
6 1/4
4 3/4
Cracked
5
8 1/8
7 1/2
8 1/8
3 5/8
1,585
705
585
445
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
2,380
1,055
545
670
3 1/2
7 1/4
5 1/4
7 1/4
4 1/4
1,290
640
755
375
6
9 3/4
9
9 3/4
4 1/4
2,210
1,095
750
645
12 3/4
4 1/4
3,320
1,645
700
965 470
12 3/4
13 1/2
3 3/4
8 1/8
5 5/8
8 1/8
4 7/8
1,565
855
870
7
11 3/8
10 1/2
11 3/8
4 7/8
2,920
1,590
930
880
10 1/2
14 7/8
15 3/4
14 7/8
5 1/8
4,380
2,385
870
1,320
4
9
6
9
5 3/8
1,845
1,115
975
590
8
13
12
13
5 3/8
3,685
2,230
1,120
1,180
12
17
18
17
6 5/8
5,530
3,345
1,045
1,770
5
11 1/4
7 1/2
11 1/4
6 1/2
2,700
1,960
—
—
10
16 1/4
15
16 1/4
7
5,395
3,920
—
—
15
21 1/4
22 1/2
21 1/4
9 1/8
8,095
5,880
—
—
Allowable Tension Load of Rebar Steel (lb.) ASTM A615 GR 60
ASTM A706 GR 60
4,595
4,085
#4
8,355
7,430
#5
12,955
11,515
#6
18,385
16,345
#7
25,070
22,285
#8
33,010
29,345
#10
52,930
47,170
* See page 12 for an explanation of the load table icons.
74
Allowable Tension Load Based on Concrete or Bond (lb.)
4 1/4
9 #7
Minimum Dimensions for Cracked (in.)
2 3/8
3 1/8 #5
Minimum Dimensions for Uncracked (in.)
1. Allowable tension load must be the lesser of the concrete, bond or rebar steel load. 2. Allowable tension loads are calculated based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and longterm temperature of 110°F. Tension design strengths are converted to allowable tension loads using a conversion factor of a = 1.4. The conversion factor a is based on the load combination 1.2D + 1.6L assuming 50% dead load and 50% live load: 1.2(0.5) + 1.6(0.5) = 1.4. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted.
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Rebar Size
Nominal Embed. Depth (in.)
*
IBC
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Rebar in Normal-Weight Concrete (f'c = 2,500 psi) — Wind Load
#3
#4
#5
#6
#7
#8
#10
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Rebar Size
Minimum Dimensions for Uncracked (in.)
Minimum Dimensions for Cracked (in.) cac
Allowable Tension Load Based on Concrete or Bond (lb.) Edge Distances = Edge Distances = 1 3/4" on one cac on all sides side and cac on three sides Uncracked Cracked Uncracked Cracked
ha
cac
ha
2 3/8
4 1/4
3 5/8
—
—
400
—
265
—
3
4 7/8
4 1/2
4 7/8
2 1/4
505
175
250
150
4 1/2
6 3/8
6 3/4
6 3/8
2 1/4
760
265
235
225
2 3/4
5 1/4
4 1/8
—
—
605
—
405
—
4
6 1/2
6
6 1/2
3
880
345
365
245
6
8 1/2
9
8 1/2
3
1,320
520
340
370
3 1/8
6 1/4
4 3/4
6 1/4
3 5/8
835
370
530
235
5
8 1/8
7 1/2
8 1/8
3 5/8
1,330
590
490
375
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
2,000
885
455
565
3 1/2
7 1/4
5 1/4
7 1/4
4 1/4
1,085
535
635
315
6
9 3/4
9
9 3/4
4 1/4
1,855
920
630
540
9
12 3/4
13 1/2
12 3/4
4 1/4
2,785
1,380
590
810
3 3/4
8 1/8
5 5/8
8 1/8
4 7/8
1,315
715
730
395
7
11 3/8
10 1/2
11 3/8
4 7/8
2,455
1,335
785
740
10 1/2
14 7/8
15 3/4
14 7/8
5 1/8
3,680
2,005
730
1,110 495
4
9
6
9
5 3/8
1,550
935
820
8
13
12
13
5 3/8
3,095
1,870
940
990
12
17
18
17
6 5/8
4,645
2,810
875
1,485
5
11 1/4
7 1/2
11 1/4
6 1/2
2,270
1,645
—
—
10
16 1/4
15
16 1/4
7
4,535
3,295
—
—
15
21 1/4
22 1/2
21 1/4
9 1/8
6,800
4,940
—
—
Adhesive Anchors
Rebar Size
Nominal Embed. Depth (in.)
*
IBC
Allowable Tension Load of Rebar Steel (lb.) ASTM A615 GR 60
ASTM A706 GR 60
#3
3,860
3,430
#4
7,020
6,240
#5
10,880
9,670
#6
15,445
13,730
#7
21,060
18,720
#8
27,730
24,650
#10
44,460
39,625
1. Allowable tension load must be the lesser of the concrete, bond or rebar steel load. 2. Allowable tension loads are calculated based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and longterm temperature of 110°F. Tension design strengths are converted to allowable tension loads using a conversion factor of α = 1/0.6 = 1.67. The conversion factor α is based on the load combination assuming 100% wind load. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted.
* See page 12 for an explanation of the load table icons.
75
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Rebar in Normal-Weight Concrete (f'c = 2,500 psi) — Seismic Load
SDC C-F6,7 Uncracked Cracked
cac
ha
3 5/8
—
—
470
—
350
—
310
—
235
—
3
4 7/8
4 1/2
4 7/8
2 1/4
590
205
445
155
295
175
220
135
4 1/2
6 3/8
6 3/4
6 3/8
2 1/4
890
310
665
230
275
265
205
195
2 3/4
5 1/4
4 1/8
—
—
705
—
530
—
475
—
355
—
4
6 1/2
6
6 1/2
3
1,025
405
770
300
425
285
320
215
6
8 1/2
9
8 1/2
3
1,540
605
1,155
455
395
430
300
320
3 1/8
6 1/4
4 3/4
6 1/4
3 5/8
975
430
730
320
620
275
460
205
5
8 1/8
7 1/2
8 1/8
3 5/8
1,555
690
1,165
515
575
440
430
330
7 1/2
10 5/8
11 1/4
10 5/8
3 5/8
2,330
1,035
1,750
775
530
660
400
495
3 1/2
7 1/4
5 1/4
7 1/4
4 1/4
1,265
625
950
470
740
370
555
275
6
9 3/4
9
9 3/4
4 1/4
2,165
1,075
1,630
805
735
630
555
475
#6
9
12 3/4
13 1/2
12 3/4
4 1/4
3,250
1,610
2,440
1,210
685
945
515
710
3 3/4
8 1/8
5 5/8
8 1/8
4 7/8
1,535
835
1,150
625
850
460
635
345
7
11 3/8
10 1/2
11 3/8
4 7/8
2,865
1,560
2,145
1,170
915
860
685
650
10 1/2
14 7/8
15 3/4
14 7/8
5 1/8
4,295
2,340
3,220
1,755
850
1,295
635
970
4
9
6
9
5 3/8
1,805
1,090
1,355
820
955
580
720
435
8
13
12
13
5 3/8
3,610
2,185
2,710
1,640
1,100
1,155
825
870
12
17
18
17
6 5/8
5,420
3,275
4,065
2,455
1,020
1,735
765
1,300
#7
#8
5
11 1/4
7 1/2
11 1/4
6 1/2
2,645
1,920
1,985
1,440
—
—
—
—
10
16 1/4
15
16 1/4
7
5,290
3,845
3,965
2,880
—
—
—
—
15
21 1/4
22 1/2
21 1/4
9 1/8
7,935
5,760
5,950
4,325
—
—
—
—
Rebar Size
Allowable Tension Load of Rebar Steel (lb.) ASTM A615 GR 60
ASTM A706 GR 60
4,505
4,005
#4
8,190
7,280
#5
12,695
11,285
#6
18,020
16,015
#7
24,570
21,840
#8
32,350
28,755
#10
51,870
46,230
* See page 12 for an explanation of the load table icons.
76
SDC A-B5 Uncracked Cracked
Edge Distances = 1 3/4" on one side and cac on three sides SDC A-B5 SDC C-F6,7 Uncracked Cracked Uncracked Cracked
ha
#5
#3
Edge Distances = cac on all sides
4 1/4
#4
cac
Allowable Tension Load Based on Concrete or Bond (lb.)
2 3/8 #3
#10
Minimum Dimensions for Cracked (in.)
1. Allowable tension load must be the lesser of the concrete, bond or rebar steel load. 2. Allowable tension loads are calculated based on the strength design provisions of ACI 318-11 Appendix D assuming dry concrete, periodic inspection, short-term temperature of 150°F and long-term temperature of 110°F. Tension design strengths are converted to allowable tension loads using a conversion factor of a = 1/0.7 = 1.43. The conversion factor a is based on the load combination assuming 100% seismic load. 3. Tabulated values are for a single anchor with no influence of another anchor. 4. Interpolation between embedment depths is not permitted. 5. The allowable tension load listed for SDC (Seismic Design Category) A-B may also be used in SDC C-F when the tension component of the strength-level seismic design load on the anchor does not exceed 20% of the total factored tension load on the anchor associated with the same load combination. 6. When designing anchorages in SDC C-F, the Designer shall consider the ductility requirements of ACI 318-11 Section D.3.3. 7. Allowable tension loads in SDC C-F have been adjusted by 0.75 factor in accordance with ACI 318-11 Section D.3.3.4.4.
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Adhesive Anchors
Minimum Dimensions Rebar Nominal for Uncracked (in.) Embed. Size Depth (in.)
*
IBC
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete Drill Bit Dia. in.
Embed. Depth in. (mm)
3⁄8 (9.5)
1⁄2
3 1⁄2 (89)
5 1⁄4 (133)
1⁄2 (12.7)
5⁄8
5⁄8 (15.9)
3⁄4
4 1⁄4 (108) 5 (127)
3⁄4 (19.1)
7⁄8
7⁄8 (22.2) 1 (25.4)
1 1 1⁄8
Critical Spacing Dist. in. (mm)
Tension Load Based on Bond Strength
Tension Load Based on Steel Strength
f'c ≥ 2,000 psi (13.8 MPa) Concrete
F1554 Grade 36
A193 GR B7
F593 304SS
Ultimate lb. (kN)
Std. Dev. lb. (kN)
Allowable lb. (kN)
Allowable lb. (kN)
Allowable lb. (kN)
Allowable lb. (kN)
14 (356)
8,777 (39.0)
324 (1.4)
2,195 (9.8)
2,105 (9.4)
4,535 (20.2)
3,630 (16.1)
6 3⁄8 (162)
17 (432)
15,368 (68.4)
605 (2.7)
3,840 (17.1)
3,750 (16.7)
8,080 (35.9)
6,470 (28.8)
7 1⁄2 (191)
20 (508)
22,877 (101.8)
718 (3.2)
5,720 (25.4)
5,875 (26.1)
12,660 (56.3)
10,120 (45.0)
6 3⁄4 (171)
10 1⁄8 (257)
27 (686)
35,459 (157.7)
4,940 (22.0)
8,865 (39.4)
8,460 (37.6)
18,230 (81.1)
12,400 (55.2)
7 3⁄4 (197) 9 (229)
11 5⁄8 (295)
31 (787)
43,596 (193.9)
1,130 (5.0)
10,900 (48.5)
11,500 (51.2)
24,785 (110.2)
16,860 (75.0)
13 1⁄2 (343)
36 (914)
47,333 (210.5)
1,243 (5.5)
11,835 (52.6)
15,025 (66.8)
32,380 (144.0)
22,020 (97.9)
40 1⁄2 (1029) 45 (1143)
61,840 (275.1)
—
15,460 (68.8)
19,025 (84.6)
41,000 (182.4)
27,880 (124.0)
78,748 (350.3)
4,738 (21.1)
19,685 (87.6)
23,490 (104.5)
50,620 (225.2)
34,420 (153.1)
1 1⁄8 (28.6)
1 1⁄4
10 1⁄8 (257)
15 1⁄4 (387)
1 1⁄4 (31.8)
1 3⁄8
11 1⁄4 (286)
16 7⁄8 (429)
1. Allowable load must the lesser of the bond or steel strength. 2. The allowable loads listed under allowable bond are based on a safety factor of 4.0. 3. Refer to allowable load-adjustment factors for spacing and edge distance on pages 84 and 85. 4. Refer to in-service temperature sensitivity chart below for allowable load adjustment for temperature.
Adhesive Anchors
Rod Dia. in. (mm)
Critical Edge Dist. in. (mm)
*
IBC
5. Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions. 6. Anchors are not permitted to resist tension forces in overhead or wall installations unless proper consideration is given to fireexposure and elevated-temperature conditions.
In-Service Temperature Sensitivity
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Base Material Temperature °F 40 70 110 135 150
°C 4 21 43 57 66
Percent Allowable Load 100% 100% 100% 85% 69%
1. Refer to temperature-sensitivity chart for allowable bond strength reduction for temperature. See page 319 for more information. 2. Percent allowable load may be linearly interpolated for intermediate base material temperatures. 3. °C = (°F-32) / 1.8
* See page 12 for an explanation of the load table icons.
77
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Shear Loads for Threaded Rod Anchors in Normal-Weight Concrete
Adhesive Anchors
Rod Dia. in. (mm) 3⁄8 (9.5) 1⁄2 (12.7) 5⁄8 (15.9) 3⁄4 (19.1) 7⁄8 (22.2) 1 (25.4) 1 1⁄8 (28.6) 1 1⁄4 (31.8)
Drill Bit Dia. in.
1⁄2 5⁄8 3⁄4
Embed. Depth in. (mm)
Critical Edge Dist. in. (mm)
Critical Spacing Dist. in. (mm)
3 1⁄2 (89) 4 1⁄4 (108) 5 (127)
5 1⁄4 (133) 6 3⁄8 (162)
13 1⁄2 (343)
5 1⁄4 (133) 6 3⁄8 (162) 7 1⁄2 (191) 10 1⁄8 (257) 11 5⁄8 (295) 13 1⁄2 (343)
15 1⁄4 (387) 16 7⁄8 (429)
15 1⁄4 (387) 16 7⁄8 (429)
6 3⁄4 (171)
7⁄8 1 1 1⁄8 1 1⁄4 1 3⁄8
7 3⁄4 (197) 9 (229) 10 1⁄8 (257) 11 1⁄4 (286)
7 1⁄2 (191) 10 1⁄8 (257) 11 5⁄8 (295)
Shear Load Based on Concrete Edge Distance f'c ≥ 2,000 psi (13.8 MPa) Concrete Ultimate Std. Dev. Allowable lb. (kN) lb. (kN) lb. (kN) 7,615 591 1,905 (33.9) (2.6) (8.5) 11,273 1,502 2,820 (50.1) (6.7) (12.5) 19,559 1,289 4,890 (87.0) (5.7) (21.8) 27,696 2,263 6,925 (123.2) (10.1) (30.8) —
—
53,960 (240.0)
3,821 (17.0)
59,280 (263.7) 64,572 (287.2)
*
IBC
— 3,503 (15.6)
Shear Load Based on Steel Strength F1554 Grade 36 Allowable lb. (kN) 1,085 (4.8) 1,930 (8.6) 3,025 (13.5) 4,360 (19.4)
A193 GR B7 Allowable lb. (kN) 2,340 (10.4) 4,160 (18.5) 6,520 (29.0) 9,390 (41.8)
F593 304SS Allowable lb. (kN) 1,870 (8.3) 3,330 (14.8) 5,220 (23.2) 6,385 (28.4)
6,925 (30.8) 13,490 (60.0)
5,925 (26.4) 7,740 (34.4)
12,770 (56.8) 16,680 (74.2)
8,685 (38.6) 11,345 (50.5)
14,820 (65.9) 16,145 (71.8)
9,800 (43.6) 12,100 (53.8)
21,125 (94.0) 26,075 (116.0)
14,365 (63.9) 17,730 (78.9)
1. Allowable load must be the lesser of the load based on concrete edge distance or steel strength. 2. The allowable loads based on concrete edge distance are based on a safety factor of 4.0. 3. Refer to allowable load-adjustment factors for spacing and edge distance on pages 84 and 85. 4. Refer to in-service temperature sensitivity chart on page 77 for allowable load adjustment for temperature. 5. Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
Min. Stemwall Edge Rod Dia. Drill Bit Embed. Depth Width in. Dia. Dist. in. in. (mm) in. in. (mm) (mm) (mm) 5⁄8 (15.9) 5⁄8 (15.9) 7⁄8 (22.2) 7⁄8 (22.2)
3⁄4 3⁄4
9 1⁄2 (241.3) 12 (304.8)
1
12 1⁄2 (317.5)
1
15 1⁄2 (393.7)
6 (152.4) 6 (152.4) 8 (203.2) 8 (203.2)
Min. End Dist. in. (mm)
5 1 3⁄4 (44.5) (127.0) 5 1 3⁄4 (44.5) (127.0) 5 1 3⁄4 (44.5) (127.0) 5 1 3⁄4 (44.5) (127.0)
*
IBC
Tension Load Based on Bond Strength
Tension Load Based on Steel Strength
f'c ≥ 2,000 psi (13.8 MPa) Concrete Ultimate Std. Dev. Allowable lb. (kN) lb. (kN) lb. (kN) 10,720 1,559 2,680 (47.7) (6.9) (11.9) 16,150 260 4,040 (71.8) (1.2) (18.0) 17,000 303 4,250 (75.6) (1.3) (18.9) 23,340 762 5,835 (103.8) (3.4) (26.0)
F1554 Grade 36 Allowable lb. (kN) 5,875 (26.1) 5,875 (26.1) 11,500 (51.2) 11,500 (51.2)
1. Allowable load must be the lesser of the bond or steel strength. 2. The allowable loads listed under allowable bond are based on a safety factor of 4.0. 3. Refer to in-service temperature sensitivity chart on page 77 for allowable load adjustment for temperature. 4. Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
* See page 12 for an explanation of the load table icons.
78
Edge 13⁄4"
W= 6" or 8"
d En 5"
Edge and end distances for threaded rod in concrete foundation stemwall corner installation
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
ET-HP® Allowable Tension Loads for Threaded Rod Anchors in Normal-Weight Concrete Stemwall
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete
Drill Bit Dia. in.
Embed. Depth in. (mm)
Critical Edge Dist. in. (mm)
Critical Spacing Dist. in. (mm)
#4 (12.7)
5⁄8
4 1⁄4 (108) 6 (152)
6 3⁄8 (162) 9 (229)
#5 (15.9)
3⁄4
5 (127)
#6 (19.1)
7⁄8
7 1⁄2 (191) 14 1⁄8 (359) 10 1⁄8 (257) 16 7⁄8 (429)
17 (432) 24 (610) 20 (508)
#7 (22.2)
1
#8 (25.4)
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
#9 (28.6)
#10 (31.8)
#11 (34.9)
#14 (44.5)
1 1⁄8
9 3⁄8 (238) 6 3⁄4 (171) 11 1⁄4 (286) 7 3⁄4 (197) 13 1⁄8 (333) 9 (229) 12 (305) 15 (381)
1 1⁄4
9 (229) 13 (330)
1 1⁄2
16 7⁄8 (429) 11 1⁄4 (286) 15 (381)
1 5⁄8
2
11 5⁄8 (295) 19 3⁄4 (502) 13 1⁄2 (343) 18 (457) 22 1⁄2 (572) 13 1⁄2 (343)
18 3⁄4 (476) 12 3⁄8 (314) 16 1⁄2 (419) 20 5⁄8 (524)
19 1⁄2 (495) 25 3⁄8 (645) 16 7⁄8 (429) 22 1⁄2 (572) 28 1⁄8 (714) 18 5⁄8 (473) 24 3⁄4 (629) 31 (787)
15 3⁄4 (400)
23 5⁄8 (600)
f'c ≥ 2,000 psi (13.8 MPa) Concrete Ultimate Std. Dev. Allowable lb. (kN) lb. (kN) lb. (kN) 17,596 533 4,400 (78.3) (2.4) (19.6) —
—
—
25,427 (113.1)
1,899 (8.4)
6,355 (28.3)
f'c ≥ 4,000 psi (27.6 MPa) Concrete Ultimate Std. Dev. Allowable lb. (kN) lb. (kN) lb. (kN) 4,400 — — (19.6) 20,250 263 5,060 (90.1) (1.2) (22.5) 6,355 — — (28.3)
—
29,510 (131.3)
2,270 (10.1)
10,455 (46.5)
—
—
—
—
44,210 (196.7)
1,227 (5.5)
7,375 (32.8) 10,455 (46.5) 11,050 (49.2)
2,995 (13.3)
12,560 (55.9)
—
—
12,560 (55.9)
3,444 (15.3)
37 1⁄2 (953) 27 (686) 45 (1,143)
—
—
41,812 (186.0)
595 (2.6)
—
31 (787)
50,241 (223.5) —
—
—
59,325 (263.9)
60,145 (267.5)
5,493 (24.4)
15,035 (66.9)
—
—
—
—
—
—
—
—
—
—
85,970 (382.4)
17,965 (79.9)
—
—
15,035 (66.9)
—
—
—
—
—
—
—
—
—
—
110,370 (491.0)
4,768 (21.2)
70,685 (314.4)
1,112 (4.9)
17,670 (78.6)
—
—
—
—
—
—
—
—
—
—
120,976 (538.1)
6,706 (29.8)
49 1⁄2 (1,257) 66 (1,676)
78,422 (348.8)
4,603 (20.5)
19,605 (87.2)
—
—
—
—
—
—
—
82 1⁄2 (2,096) 63 (1,600)
—
—
—
150,415 (669.1)
8,287 (36.9)
91,518 (407.1)
3,797 (16.9)
22,880 (101.8)
—
—
52 1⁄2 (1,334) 36 (914) 48 (1,219) 60 (1,524) 36 (914) 52 (1,321) 67 1⁄2 (1,715) 45 (1,143) 60 (1,524) 75 (1,905)
Tension Load Based on Steel Strength
Tension Load Based on Bond Strength
14,830 (66.0) 15,035 (66.9) 18,260 (81.2) 21,490 (95.6) 15,035 (66.9) 21,310 (94.8) 27,590 (122.7) 17,670 (78.6) 23,960 (106.6) 30,245 (134.5) 19,605 (87.2) 28,605 (127.2) 37,605 (167.3) 22,880 (101.8)
ASTM A615 Grade 60 Rebar Allowable lb. (kN) 4,800 (21.4)
7,440 (33.1)
10,560 (47.0)
14,400 (64.1)
Adhesive Anchors
Rebar Size No. (mm)
*
IBC
ET-HP® Allowable Tension Loads for Rebar Dowels in Normal-Weight Concrete
18,960 (84.3)
24,000 (106.8)
30,480 (135.6)
37,440 (166.5)
54,000 (240.2)
1. Allowable load must be the lesser of the bond or steel strength. 2. The allowable loads listed under allowable bond are based on a safety factor of 4.0. 3. Refer to allowable load-adjustment factors for spacing and edge distance on pages 84 and 85. 4. Refer to in-service temperature sensitivity chart on page 77 for allowable load adjustment for temperature. 5. Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions. 6. Anchors are not permitted to resist tension forces in overhead or wall installations unless proper consideration is given to fire-exposure and elevated-temperature conditions.
* See page 12 for an explanation of the load table icons.
79
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Shear Loads for Rebar Dowels in Normal-Weight Concrete
Adhesive Anchors
Rebar Size No. (mm) #4 (12.7) #5 (15.9) #6 (19.1) #7 (22.2) #8 (25.4) #9 (28.7) #10 (32.3) #11 (35.8) #14 (43.0)
Drill Bit Dia. in.
5⁄8 3⁄4 7⁄8 1 1 1⁄8 1 1⁄4 1 1⁄2 1 5⁄8 2
Embed. Depth in. (mm)
Critical Edge Dist. in. (mm)
Critical Spacing Dist. in. (mm)
4 1⁄4 (108) 5 (127)
8 (203) 10 (254) 12 (305) 14 (356) 16 (406) 18 (457) 20 (508) 22 (559) 22 (559)
6 3⁄8 (162) 7 1⁄2 (191) 10 1⁄8 (257) 11 5⁄8 (295) 13 1⁄2 (343) 15 1⁄4 (387) 16 7⁄8 (429) 18 5⁄8 (473) 18 5⁄8 (473)
6 3⁄4 (171) 7 3⁄4 (197) 9 (229) 10 1⁄8 (257) 11 1⁄4 (286) 12 3⁄8 (314) 12 3⁄8 (314)
*
IBC
Shear Load Based on Concrete Edge Distance
Shear Load Based on Steel Strength
f'c ≥ 2,500 psi (17.2 MPa) Concrete Ultimate Std. Dev. Allowable lb. (kN) lb. (kN) lb. (kN) 13,564 971 3,390 (60.3) (4.3) (15.1) 20,914 3,034 5,230 (93.0) (13.5) (23.3) 30,148 1,322 7,535 (134.1) (5.9) (33.5) 39,838 1,854 9,960 (177.2) (8.2) (44.3) 53,090 3,562 13,270 (236.2) (15.8) (59.0) 63,818 3,671 15,955 (148.7) (16.3) (71.0) 82,782 2,245 20,695 (368.2) (10.0) (92.1) 96,056 3,671 24,015 (427.3) (16.3) (106.8) 24,015 — — (106.8)
ASTM A615 Grade 60 Rebar Allowable lb. (kN) 3,060 (13.6) 4,740 (21.1) 6,730 (29.9) 9,180 (40.8) 12,085 (53.8) 15,300 (68.1) 19,430 (86.4) 23,865 (106.2) 34,425 (153.1)
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
1. Allowable load must be the lesser of the load based on concrete edge distance or steel strength. 2. The allowable loads based on concrete edge distance are based on a safety factor of 4.0. 3. Refer to allowable load-adjustment factors for spacing and edge distance on pages 84 and 85. 4. Refer to in-service temperature sensitivity chart on page 77 for allowable load adjustment for temperature. 5. Anchors are permitted to be used within fire-resistive construction, provided the anchors resist wind or seismic loads only. For use in fire-resistive construction, the anchors can also be permitted to be used to resist gravity loads, provided special consideration has been given to fire-exposure conditions.
* See page 12 for an explanation of the load table icons.
80
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Masonry *
ET-HP® Allowable Tension and Shear Loads for Threaded Rod and Rebar IBC in the Face of Fully Grouted CMU Wall Construction1, 3, 4, 5, 6, 8, 9, 10, 11, 12 Diameter (in.) or Rebar Size No.
Drill Bit Diameter (in.)
Allowable Load Based on Bond Strength7 (lb.)
Minimum Embedment2 (in.)
Tension Load
Shear Load
3/8 1/2 5/8 3/4
3 3/8 4 1/2 5 5/8 6 1/2
1/2 5/8 3/4 7/8
1,425 1,425 1,560 1,560
845 1,470 1,835 2,050
1,275 1,435 1,550
1,335 1,355 1,355
Rebar Installed in the Face of CMU Wall #3 #4 #5
3 3/8 4 1/2 5 5/8
1/2 5/8 3/4
1. Allowable load shall be the lesser of the bond values shown in this table and steel values, shown on page 83. 2. Embedment depth shall be measured from the outside face of masonry wall. 3. Critical and minimum edge distance and spacing shall comply with the information on page 82. Figure 2 on page 82 illustrates critical and minimum edge and end distances. 4. Minimum allowable nominal width of CMU wall shall be 8 inches. The minimum allowable member thickness shall be no less than 1 1/2 times the actual anchor embedment. 5. No more than one anchor shall be permitted per masonry cell. 6. Anchors shall be permitted to be installed at any location in the face of the fully grouted masonry wall construction (cell, web, bed joint), except anchors shall not be installed within 1 1/2 inches of the head joint, as show in Figure 2 on page 82. 7. Tabulated allowable load values are for anchors installed in fully grouted masonry walls. 8. Tabulated allowable loads are based on a safety factor of 5.0. 9. Tabulated allowable load values shall be adjusted for increased base material temperatures in accordance with Figure 1 below, as applicable. 10. Threaded rod and rebar installed in fully grouted masonry walls with ET-HP® are permitted to resist dead, live, seismic and wind loads. 11. Threaded rod shall meet or exceed the tensile strength of ASTM F1554, Grade 36 steel, which is 58,000 psi. 12. For installations exposed to severe, moderate or negligible exterior weathering conditions, as defined in Figure 1 of ASTM C62, allowable tension loads shall be multiplied by 0.80.
100% @50°F
110 Percent of Allowable Load Values (%)
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120
Adhesive Anchors
Threaded Rod Installed in the Face of CMU Wall
100% @70°F
100
84% @110°F
90
71% @135°F
80 70
53% @150°F
60 50 40 30 20 10 0
40
60
80
100
120
140
160
Base Material Temperature (˚F ) Figure 1. Load capacity based on in-service temperature for ET-HP® epoxy adhesive in the face of fully grouted CMU wall construction
* See page 12 for an explanation of the load table icons.
81
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Masonry *
ET-HP® Edge Distance and Spacing Requirements and Allowable Load Reduction IBC Factors — Threaded Rod and Rebar in the Face of Fully Grouted CMU Wall Construction2,7 Edge or End Distance1,8
Adhesive Anchors
Critical (Full Anchor Capacity)3
Minimum (Reduced Anchor Capacity)4
Rod Dia. Minimum Critical Edge Allowable Minimum (in.) or End Load Edge or Embed. or Distance, Reduction End Distance, Depth Rebar Size Ccr (in.) Factor Cmin (in.) (in.) No. Load Direction Tension or Tension or Shear Shear
Spacing2,9
Critical Spacing, Scr (in.)
Allowable Load Reduction Factor Load Direction
Tension or Shear
Tension
Critical (Full Anchor Capacity)5 Allowable Load Reduction Factor
Minimum (Reduced Anchor Capacity)6 Minimum Spacing, Smin (in.)
Load Direction Shear10
Perp.
Parallel
Allowable Load Reduction Factor Load Direction
Tension or Tension or Tension or Shear Shear Shear
Tension
Shear
3/8
3 3/8
12
1.00
4
0.76
1.00
1.00
8
1.00
4
0.47
0.94
1/2
4 1/2
12
1.00
4
1.00
0.92
0.9
8
1.00
4
0.60
0.96
5 5/8
12
1.00
4
1.00
0.55
0.86
8
1.00
4
0.72
0.98
5/8 3/4
6 1/2
12
1.00
4
1.00
0.55
0.86
8
1.00
4
0.85
1.00
#3
3 3/8
12
1.00
4
0.96
0.86
1.00
8
1.00
4
0.37
0.92
#4
4 1/2
12
1.00
4
1.00
0.71
1.00
8
1.00
4
0.69
0.96
#5
5 5/8
12
1.00
4
1.00
0.71
1.00
8
1.00
4
1.00
1.00
4" minimum edge distance
Critical edge distance (see load table)
Installation in this area for reduced allowable load capacity
Shear Load A1 Shear Load B2
Critical end distance (see load table) No installation within 1½" of head joint
Installations in this area for full allowable load capacity
Figure 2. Allowable anchor placement in grouted CMU face shell
* See page 12 for an explanation of the load table icons.
82
Figure 3. Anchor placement in grouted CMU mortar “T” joint 1. Direction of Shear Load A is parallel to edge of wall and perpendicular to end of wall. 2. Direction of Shear Load B is parallel to end of wall and perpendicular to edge of wall.
End of Wall
4" minimum end distance
Edge of Wall
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1. Edge distance (Ccr or Cmin) is the distance measured from anchor centerline to edge or end of CMU masonry wall. Refer to Figure 2 below for an illustration showing critical and minimum edge and end distances. 2. Anchor spacing (Scr or Smin) is the distance measured from centerline to centerline of two anchors. 3. Critical edge distance, Ccr, is the least edge distance at which tabulated allowable load of an anchor is achieved where a load reduction factor equals 1.0 (no load reduction). 4. Minimum edge distance, Cmin, is the least edge distance where an anchor has an allowable load capacity which shall be determined by multiplying the allowable loads assigned to anchors installed at critical edge distance, Ccr, by the load reduction factors shown above. 5. Critical spacing, Scr, is the least anchor spacing at which tabulated allowable load of an anchor is achieved such that anchor performance is not influenced by adjacent anchors. 6. Minimum spacing, Smin, is the least spacing where an anchors has an allowable load capacity, which shall be determined by multiplying the allowable loads assigned to anchors installed at critical spacing distance, Scr, by the load reduction factors shown above. 7. Reduction factors are cumulative. Multiple reduction factors for more than one spacing or edge or end distance shall be calculated separately and multiplied. 8. Load reduction factor for anchors loaded in tension or shear with edge distances between critical and minimum shall be obtained by linear interpolation. 9. Load reduction factor for anchors loaded in tension with spacing between critical and minimum shall be obtained by linear interpolation. 10. Perpendicular shear loads act towards the edge or end. Parallel shear loads act parallel to the edge or end (see Figure 3 below). Perpendicular and parallel shear load reduction factors are cumulative when the anchor is located between the critical minimum edge and end distance.
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Masonry *
IBC
Shear Load Based on Steel Strength3 (lb.) Tension Load Based on Steel Strength2 (lb.) Threaded Tensile Stainless Steel Stainless Steel Rod Stress ASTM ASTMA ASTM A193 ASTM A193 ASTM ASTM A193 Diameter Area ASTM F1554 F1554 193 Grade 364 Grade B76 ASTM A193 B8 Grade 364 Grade B76 A193 Grades B8 (in.) (in.2) Grade B65 Grades 7 5 and B8M Grade B6 and B8M7 0.078 1,495 3,220 2,830 1,930 770 1,660 1,460 995 3/8 0.142 2,720 5,860 5,155 3,515 1,400 3,020 2,655 1,810 1/2 0.226 4,325 9,325 8,205 5,595 2,230 4,805 4,225 2,880 5/8 0.334 6,395 13,780 12,125 8,265 3,295 7,100 6,245 4,260 3/4 5. Minimum specified tensile strength (Fu = 110,000 psi) of 1. Allowable load shall be the lesser of bond values given on page 81 and steel values in the table above. ASTM A193, Grade B6 used to calculate allowable steel strength. 2. Allowable Tension Steel Strength is based on the following equation: Fv = 0.33 x Fu x Tensile Stress Area. 6. Minimum specified tensile strength (Fu = 125,000 psi) of ASTM A193, Grade B7 used to calculate allowable steel 3. Allowable Shear Steel Strength is based on the following strength. equation: Fv = 0.17 x Fu x Tensile Stress Area. 4. Minimum specified tensile strength (Fu = 58,000 psi) of ASTM 7. Minimum specified tensile strength (Fu = 75,000 psi) of ASTM A193, Grades B8 and B8M used to calculate allowable steel F1554, Grade 36 used to calculate allowable steel strength. strength.
ET-HP® Allowable Tension and Shear Loads — Deformed Reinforcing Bar Based on Steel Strength1 Rebar Size
Tensile Stress Area (in.2)
#3 #4 #5
0.11 0.20 0.31
Tension Load (lb.) Based on Steel Strength ASTM A615 ASTM A615 Grade 603 Grade 402 2,200 2,640 4,000 4,800 6,200 7,400
1. Allowable load shall be the lesser of bond values given on page 81 and steel values in the table above. 2. Allowable Tension Steel Strength is based on AC58 Section 3.3.3 (20,000 psi x tensile stress area) for Grade 40 rebar. 3. Allowable Tension Steel Strength is based on AC58
IBC
SCREEN TUBE
*
Configuration A (Shear)
Shear Load (lb.) Based on Steel Strength ASTM A615 ASTM A615 Grade 404,5 Grade 604,6 1,310 1,685 2,380 3,060 3,690 4,745
SCREEN TUBE
Section 3.3.3 (24,000 psi x tensile stress area) for Grade 60 rebar. 4. Allowable Shear Steel Strength is based on AC58 Section 3.3.3 (Fv = 0.17 x Fu x Tensile Stress Area). 5. Fu = 70,000 psi for Grade 40 rebar. 6. Fu = 90,000 psi for Grade 60 rebar.
ET-HP Allowable Tension and Shear Loads for Installations in Unreinforced Brick Masonry Walls — Minimum URM Wall Thickness is 13" (3 wythes thick)
22.5º 1" MAX.
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
Rod Dia. in. (mm)
3⁄4 (19.1) 3⁄4 (19.1) 5⁄8 (15.9)
Drill Bit Dia. in.
Min. Horiz. Spacing Dist. in. (mm)
*
IBC
Tension Load Based on URM Strength
Shear Load Based on URM Strength
Minimum Net Mortar Strength = 50 psi
Minimum Net Mortar Strength = 50 psi
Allowable lb. (kN) Allowable lb. (kN) Configuration A (Simpson Strong-Tie® ETS or ETSP Screen Tube Required) 8 24 18 18 1,000 1 — (203) (610) (457) (457) (4.4) ® Configuration B (Simpson Strong-Tie ETS or ETSP Screen Tube Required) 13 16 18 24 1,200 1,000 1 (330) (406) (457) (610) (5.3) (4.4) Configuration C (Simpson Strong-Tie® ETS Screen Tube and AST Steel Sleeve Required) 24 18 18 1,200 750 1 ** (610) (457) (457) (5.3) (3.3)
1. Threaded rods must comply with ASTM F1554 Grade 36 minimum. 2. All holes are drilled with a 1"-diameter carbide-tipped drill bit with the drill set in the rotation-only mode. 3. The unreinforced brick walls must have a minimum thickness of 13 inches (three wythes of brick). 4. The allowable load is applicable only where in-place shear tests indicate minimum net mortar strength of 50 psi. 5. The allowable load for Configuration B and C anchors subjected to a combined tension and shear load is determined by assuming a straight-line relationship between allowable tension and shear. 6. The anchors installed in unreinforced brick walls are limited to resisting seismic or wind forces only. 7. Configuration A has a straight threaded rod or rebar embedded 8 inches into the wall with a 31⁄32"-diameter by 8-inch-long screen tube (part # ETS758 or ETS758P). This configuration is designed to resist shear loads only.
* See page 12 for an explanation of the load table icons.
3⁄4" DIA. BENT THREADED ROD
Configuration B (Tension & Shear)
®
Min. Min. Embed. Edge/End Vertical Depth Spacing Dist. in. Dist. in. (mm) in. (mm) (mm)
Adhesive Anchors
ET-HP® Allowable Tension and Shear Loads — Threaded Rod Based on Steel Strength1
8. Configuration B has a 3⁄4" threaded rod bent and installed at a 22.5-degree angle and installed 13 inches into the wall, to within 1-inch (maximum) of the exterior wall surface. This configuration is designed to resist tension and shear loads. The pre-bent threaded rod is installed with a 31⁄32" diameter by 13-inch-long screen tube (part # ETS7513 or ETS7513P). 9. Configuration C is designed to resist tension and shear forces. It consists of a 5⁄8"-diameter, ASTM F1554 Grade 36 threaded rod and an 8"-long sleeve (part # AST800) and a 31⁄32"-diameter by 8-inch-long screen tube (part # ETS758). The steel sleeve has a plastic plug in one end. A 6" by 6" by 3⁄8" thick ASTM A 36 steel plate is located on the back face of the wall. 10. Special inspection requirements are determined by local jurisdiction and must be confirmed by the local building official. 11. Refer to in-service temperature sensitivity chart for allowable load adjustment for temperature.
6"x6"x3⁄8" STEEL PLATE
STEEL SCREEN TUBE STEEL SLEEVE ⁄ " DIA. ROD
58
HEX NUT
Configuration C (Tension & Shear)
Installation Instructions for Configuration C 1. Drill hole perpendicular to the wall to a depth of 8" with a 1"-diameter carbide-tipped drill bit (rotation-only mode). 2. Clean hole with oil-free compressed air and a nylon brush. 3. Fill 8" steel screen tube with mixed adhesive and insert into hole. 4. Insert steel sleeve slowly into screen tube (adhesive will displace). 5. Allow adhesive to cure (see cure schedule). 6. Drill through plastic plug in (inside) end of steel sleeve with 5⁄8" bit. Drill completely through the wall with 5⁄8" carbide-tipped concrete drill bit (rotation-only mode). 7. Insert 5⁄8" rod through hole and attach metal plate and nut.
83
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Load-Adjustment Factors in Normal-Weight Concrete: Edge Distance, Tension and Shear Loads How to use these charts
Adhesive Anchors
1. The following tables are for reduced edge distance. 2. Locate the anchor size to be used for either a tension and/or shear load application. 3. Locate the embedment (E) at which the anchor is to be installed. 4. Locate the edge distance (cact) at which the anchor is to be installed.
Edge Distance Tension (fc ) Dia. 3⁄8 Edge Rebar E 3 1⁄2 Dist. cact ccr 5 1⁄4 (in.) cmin 1 3⁄4 fcmin 0.50 0.50 1 3⁄4 0.64 2 3⁄4 3 0.68 4 0.82 5 0.96 6 1.00 7 8 9 10 12 14 16 18 20 22 24 26 28 30 32
1⁄2
5⁄8 #4
4 1⁄4 6 3⁄8 1 3⁄4 0.50 0.50 0.61 0.64 0.74 0.85 0.96 1.00
3⁄4 #5
6 9 1 3⁄4 0.59 0.59 0.65 0.66 0.72 0.77 0.83 0.89 0.94 1.00
5 7 1⁄2 1 3⁄4 0.50 0.50 0.59 0.61 0.70 0.78 0.87 0.96 1.00
9 3⁄8 14 1⁄8 1 3⁄4 0.64 0.64 0.67 0.68 0.71 0.73 0.76 0.79 0.82 0.85 0.88 0.94 1.00
#6 6 3⁄4 11 1⁄4 10 1⁄8 16 7⁄8 1 3⁄4 1 3⁄4 0.50 0.57 0.50 0.57 0.56 0.60 0.57 0.61 0.63 0.63 0.69 0.66 0.75 0.69 0.81 0.72 0.87 0.75 0.93 0.78 0.99 0.80 1.00 0.86 0.92 0.98 1.00
7⁄8 #7 7 3⁄4 13 1⁄8 11 5⁄8 19 3⁄4 1 3⁄4 1 3⁄4 0.50 0.52 0.50 0.52 0.55 0.55 0.56 0.55 0.61 0.58 0.66 0.61 0.72 0.63 0.77 0.66 0.82 0.69 0.87 0.71 0.92 0.74 1.00 0.79 0.85 0.90 0.95 1.00
5. The load-adjustment factor (fc) is the intersection of the row and column. 6. Multiply the allowable load by the applicable load-adjustment factor. 7. Reduction factors for multiple edges are multiplied together. 8. Adjustment factors do not apply to allowable steel strength values. 9. Adjustment factors are to be applied to allowable tension load based on bond strength values or allowable Shear Load Based on Concrete Edge Distance values only.
1 #8
#9 9 15 9 16 7⁄8 13 1⁄2 22 1⁄2 13 1⁄2 25 3⁄8 1 3⁄4 1 3⁄4 2 3⁄4 2 3⁄4 0.50 0.47 0.50 0.47 0.50 0.47 0.54 0.50 0.50 0.47 0.55 0.50 0.51 0.48 0.60 0.53 0.56 0.50 0.64 0.55 0.60 0.52 0.68 0.58 0.65 0.55 0.72 0.60 0.70 0.57 0.77 0.63 0.74 0.59 0.81 0.66 0.79 0.62 0.85 0.68 0.84 0.64 0.94 0.73 0.93 0.69 1.00 0.78 1.00 0.73 0.83 0.78 0.89 0.83 0.94 0.87 0.99 0.92 1.00 0.97 1.00
1 1⁄8 10 1⁄8 15 1⁄4 2 3⁄4 0.58 0.58 0.59 0.62 0.66 0.69 0.72 0.76 0.79 0.82 0.89 0.96 1.00
1 1⁄4 #10 11 1⁄4 18 3⁄4 16 7⁄8 28 1⁄8 2 3⁄4 2 3⁄4 0.58 0.51 0.58 0.59 0.62 0.65 0.68 0.71 0.74 0.77 0.80 0.86 0.91 0.97 1.00
0.51 0.51 0.53 0.55 0.57 0.59 0.61 0.63 0.65 0.69 0.73 0.77 0.80 0.84 0.88 0.92 0.96 1.00
#11 12 3⁄8 20 5⁄8 18 5⁄8 31 2 3⁄4 2 3⁄4 0.58 0.51
#14 15 3⁄4 23 5⁄8 2 3⁄4 0.58
0.58 0.59 0.61 0.64 0.67 0.69 0.72 0.75 0.77 0.82 0.88 0.93 0.98 1.00
0.58 0.59 0.61 0.63 0.65 0.67 0.69 0.71 0.73 0.77 0.81 0.85 0.89 0.93 0.97 1.00
0.51 0.51 0.53 0.55 0.57 0.58 0.60 0.62 0.64 0.67 0.71 0.74 0.77 0.81 0.84 0.88 0.91 0.95 0.98 1.00
IBC
*
IBC
*
Edge Distance Shear (fc ) Dia. Edge Rebar E Dist. cact ccr (in.) cmin fcmin 1 3⁄4 2 3⁄4 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 20 22
3⁄8 3 1⁄2 5 1⁄4 1 3⁄4 0.29 0.29 0.49 0.54 0.75 0.95 1.00
1⁄2 4 1⁄4 6 3⁄8 1 3⁄4 0.20 0.20 0.37 0.42 0.59 0.76 0.94 1.00
5⁄8 #4 4 1⁄4 8 1 3⁄4 0.16 0.16 0.29 0.33 0.46 0.60 0.73 0.87 1.00
5 7 1⁄2 1 3⁄4 0.13 0.13 0.28 0.32 0.47 0.62 0.77 0.92 1.00
1 3⁄4 7⁄8 1 1⁄8 1 1⁄4 #5 #6 #7 #8 #9 5 9 9 6 3⁄4 6 3⁄4 7 3⁄4 7 3⁄4 10 1⁄8 10 1⁄8 11 1⁄4 10 10 1⁄8 12 11 5⁄8 14 13 1⁄2 16 18 15 1⁄4 16 7⁄8 1 3⁄4 1 3⁄4 1 3⁄4 1 3⁄4 1 3⁄4 1 3⁄4 1 3⁄4 2 3⁄4 2 3⁄4 2 3⁄4 0.10 0.13 0.10 0.13 0.09 0.08 0.08 0.08 0.14 0.14 0.10 0.13 0.10 0.13 0.09 0.08 0.08 0.21 0.23 0.19 0.22 0.16 0.16 0.14 0.08 0.14 0.14 0.24 0.26 0.21 0.24 0.18 0.18 0.16 0.10 0.16 0.16 0.35 0.36 0.30 0.33 0.26 0.26 0.23 0.16 0.23 0.22 0.45 0.47 0.39 0.42 0.33 0.33 0.29 0.22 0.29 0.28 0.56 0.57 0.47 0.50 0.41 0.41 0.35 0.28 0.36 0.34 0.67 0.68 0.56 0.59 0.48 0.49 0.42 0.34 0.43 0.40 0.78 0.78 0.65 0.68 0.55 0.57 0.48 0.40 0.50 0.46 0.89 0.88 0.74 0.77 0.63 0.65 0.55 0.46 0.57 0.52 1.00 0.99 0.82 0.86 0.70 0.73 0.61 0.52 0.64 0.58 1.00 0.91 0.94 0.78 0.80 0.68 0.58 0.71 0.64 1.00 1.00 0.85 0.88 0.74 0.64 0.78 0.70 0.93 0.96 0.81 0.70 0.85 0.76 1.00 1.00 0.87 0.76 0.91 0.82 0.94 0.82 0.98 0.89 1.00 0.88 1.00 0.95 1.00 1.00
1. E = Embedment depth (inches). 2. cact = actual edge distance at which anchor is installed (inches). 3. ccr = critical edge distance for 100% load (inches). 4. cmin = minimum edge distance for reduced load (inches).
* See page 12 for an explanation of the load table icons.
84
#10 #11 #14 11 1⁄4 12 3⁄8 12 3⁄8 20 22 22 2 3⁄4 2 3⁄4 2 3⁄4 0.14 0.14 0.14 0.14 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.90 1.00
0.14 0.15 0.20 0.24 0.29 0.33 0.37 0.42 0.46 0.51 0.55 0.60 0.64 0.69 0.73 0.82 0.91 1.00
0.14 0.15 0.20 0.24 0.29 0.33 0.37 0.42 0.46 0.51 0.55 0.60 0.64 0.69 0.73 0.82 0.91 1.00
5. fc = adjustment factor for allowable load at actual edge distance. 6. fccr = adjustment factor for allowable load at critical edge distance. fccr is always = 1.00. 7. fcmin = adjustment factor for allowable load at minimum edge distance. 8. fc = fcmin + [(1 – fcmin) (cact – cmin) / (ccr – cmin)].
C-A-2016 © 2015 SIMPSON STRONG-TIE COMPANY INC.
See notes below.
Simpson Strong-Tie® Anchoring & Fastening Systems for Concrete and Masonry
ET-HP® Design Information — Concrete ET-HP® Allowable Load-Adjustment Factors in Normal-Weight Concrete: Spacing, Tension and Shear Loads 1. The following tables are for reduced spacing. 7. Reduction factors for multiple spacings are multiplied together. 2. Locate the anchor size to be used for either a tension and/or shear 8. Adjustment factors do not apply to allowable steel strength values. load application. 9. Adjustment factors are to be applied to allowable Tension Load 3. Locate the embedment (E) at which the anchor is to be installed. Based on Bond Strength values or allowable Shear Load Based on Concrete Edge Distance values only. 4. Locate the spacing (sact) at which the anchor is to be installed. 5. The load-adjustment factor (fs) is the intersection of the row and column. 6. Multiply the allowable load by the applicable load-adjustment factor.
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Dia. 3⁄8 Rebar E 3 1⁄2 sact (in.) scr 14 smin 1 3⁄4 fsmin 0.89 0.89 1 3⁄4 2 0.89 4 0.91 6 0.93 8 0.95 10 0.96 12 0.98 14 1.00 16 18 20 24 28 32 36 40 45 50 55 60 65 70 75 82 1⁄2
1 7⁄8 #6 #7 #8 #9 6 5 15 9 16 7⁄8 4 1⁄4 9 3⁄8 6 3⁄4 11 1⁄4 7 3⁄4 13 1⁄8 9 17 24 20 37 1⁄2 27 45 31 52 1⁄2 36 60 36 67 1⁄2 3 2 1⁄8 2 1⁄2 4 3⁄4 3 3⁄8 5 5⁄8 3 7⁄8 6 5⁄8 4 1⁄2 7 1⁄2 4 1⁄2 8 1⁄2 0.89 0.89 0.89 0.89 0.89 0.89 0.89 0.89 0.89 0.89 0.89 0.89 1⁄2
5⁄8
#4
0.90 0.92 0.93 0.95 0.96 0.98 0.99 1.00
*
IBC
Spacing Tension (fs) 3⁄4
1 1⁄8
#5
0.90 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.98 1.00
0.90 0.91 0.92 0.94 0.95 0.96 0.97 0.99 1.00
0.89 0.90 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.99 1.00
0.89 0.90 0.91 0.91 0.92 0.93 0.93 0.94 0.95 0.97 0.98 0.99 1.00
0.89 0.90 0.90 0.91 0.91 0.92 0.92 0.93 0.94 0.95 0.96 0.97 0.99 1.00
0.89 0.90 0.91 0.91 0.92 0.93 0.94 0.95 0.96 0.97 0.99 1.00
0.89 0.90 0.90 0.91 0.91 0.92 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.00
0.90 0.90 0.91 0.92 0.92 0.93 0.94 0.94 0.96 0.97 0.99 1.00
0.89 0.90 0.90 0.90 0.91 0.91 0.92 0.92 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.00
0.90 0.90 0.91 0.92 0.92 0.93 0.94 0.94 0.96 0.97 0.99 1.00
0.89 0.90 0.90 0.90 0.91 0.91 0.92 0.93 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.00
10 1⁄8 40 1⁄2 5 1⁄8 0.89
0.89 0.90 0.91 0.91 0.92 0.92 0.93 0.94 0.95 0.96 0.97 0.99 1.00
1 1⁄4 #10 11 1⁄4 18 3⁄4 45 75 5 5⁄8 9 3⁄8 0.89 0.89
0.89 0.90 0.90 0.91 0.91 0.92 0.92 0.93 0.94 0.95 0.96 0.97 0.99 1.00
0.89 0.89 0.90 0.90 0.90 0.91 0.91 0.92 0.93 0.93 0.94 0.95 0.96 0.97 0.97 0.98 0.99 1.00
#11 12 3⁄8 20 5⁄8 49 1⁄2 82 1⁄2 6 1⁄4 10 3⁄8 0.89 0.89
#14 15 3⁄4 63 7 7⁄8 0.89
0.89 0.90 0.90 0.91 0.91 0.92 0.92 0.94 0.95 0.96 0.97 0.98 0.99 1.00
0.89 0.89 0.90 0.90 0.91 0.91 0.91 0.92 0.93 0.94 0.95 0.95 0.96 0.97 0.98 0.99 1.00
0.89 0.90 0.90 0.90 0.90 0.91 0.92 0.92 0.93 0.94 0.94 0.95 0.96 0.97 0.97 0.98 0.99 1.00
Adhesive Anchors
How to use these charts
See Notes Below.
sact (in.)
1 3⁄4 2 3 4 5 6 7 8 9 10 12 14 16 18 20
Dia. Rebar E scr smin fsmin
3⁄8 3 1⁄2 5 1⁄4 1 3⁄4 0.83 0.83 0.84 0.89 0.94 0.99 1.00
*
IBC
Spacing Shear (fs) 1⁄2 #4 4 1⁄4 6 3⁄8 2 1⁄8 0.83
5⁄8 #5 5 7 1⁄2 2 1⁄2 0.83
0.87 0.91 0.95 0.99 1.00
0.85 0.88 0.92 0.95 0.98 1.00
1 3⁄4 7⁄8 1 1⁄8 1 1⁄4 #6 #7 #8 #9 #10 #11 #14 9 6 3⁄4 7 3⁄4 10 1⁄8 11 1⁄4 12 3⁄8 12 3⁄8 10 1⁄8 11 5⁄8 13 1⁄2 15 1⁄4 16 7⁄8 18 5⁄8 18 5⁄8 3 3⁄8 3 7⁄8 4 1⁄2 5 1⁄8 5 5⁄8 6 1⁄4 6 1⁄4 0.83 0.83 0.83 0.83 0.83 0.83 0.83
0.85 0.87 0.90 0.92 0.95 0.97 1.00
0.83 0.85 0.88 0.90 0.92 0.94 0.96 1.00
0.84 0.86 0.88 0.90 0.92 0.93 0.97 1.00
0.84 0.86 0.88 0.90 0.91 0.95 0.98 1.00
0.84 0.85 0.87 0.88 0.90 0.93 0.96 0.99 1.00
0.84 0.85 0.87 0.88 0.91 0.94 0.96 0.99 1.00
0.84 0.85 0.87 0.88 0.91 0.94 0.96 0.99 1.00
1. E = Embedment depth (inches). 2. Sact = actual spacing distance at which anchors are installed (inches). 3. Scr = critical spacing distance for 100% load (inches). 4. Smin = minimum spacing distance for reduced load (inches). 5. fs = adjustment factor for allowable load at actual spacing distance. 6. fscr = adjustment factor for allowable load at critical spacing distance. fscr is always = 1.00. 7. fsmin = adjustment factor for allowable load at minimum spacing distance. 8. fs = fsmin + [(1 – fsmin) (sact – smin) / (scr – smin)].
* See page 12 for an explanation of the load table icons.
85