CEMP-E
TI 809-02
1 September 1999
Table 4-4. Allowable Service Load on Embedded Bolts
(Adapted from the International Building Code (IBC) - Final Draft, Table 1912.2)
Minimum Concrete Strength (fc')
30 MPa
30 MPa
25 MPa
25 MPa
Bolt
Minimum
Edge
20 MPa 20 Mpa
(4000psi)
(4000ps
(2500psi) (2500ps (3000psi)
(3000ps
Dia.
Embed.
Distanc
Spacing
i)
i)
e
i)
Tension
Shear
Tension
Shear
Tension
Shear
6.4 mm
63.5 mm
38.1 m
76.2 mm 890 N
2225 N
890 N
2125 N
390 N
2225 N
(1/4")
(2-1/2")
(1-1/2")
(3")
(200#)
(500#)
(200#)
(500#)
(200#)
(500#)
9.5 mm
76.2 mm
57.2 m
114.3mm 2225 N
4890 N 2225 N
4890 N
2225 N
4890 N
(3/8")
(3")
(2-1/4")
(4-1/2")
(500#)
(1,100#) (500#)
(1,100#)
(500#)
(1,100#)
152.4mm 4225 N
5560 N 4225 N
5560 N
4225 N
5560 N
76.2
101.6
12.7
(6")
(950#)
(1,250#) (950#)
(1,250#)
(950#)
(1,250#)
mm
mm
mm
(3")
(4")
(1/2")
12.7
101.6
127 mm
152.4mm
6450 N
7120 N
6670 N
7340 N
6890 N
7785 N
mm
mm
(5")
(6")
(1,450#)
(1,600#)
(1,500#)
(1,650#)
(1,550#)
(1,750#)
(1/2")
(4")
15.9
114.3
95.3
190.5mm
6670 N
12,230
6670 N
12,270
6670 N
12,270 N
mm
mm
mm
(7-1/2")
(1,500#)
N
(1,500#)
N
(1,500#)
(2,750#)
(5/8")
(4-1/2")
(3-3/4")
(2,750#)
(2,750#)
15.9
114.3
158.8m
190.5mm
9460 N
13,120
9785 N
13,340
10,670
13,570 N
mm
mm
m
(7-1/2")
(2,125#)
N
(2,200#)
N
N
(3,050#)
(5/8")
(4-1/2")
(6-1/4")
(2,950#)
(3,000#)
(2,400#)
19.1
127.0
114.3m
228.6mm
10,000 N
14,460
10,000 N
15,835
10,000
15,835 N
mm
mm
m
(9")
(2,250#)
N
(2,250#)
N
N
(3,560#)
(3/4")
(5")
(4-1/2")
(3,250#)
(3,560#)
(2,250#)
19.1
127.0
190.5m
228.6mm
12,565 N
19,015
13,120 N
19,130
14,230
19,570 N
mm
mm
m
(9")
(2,825#)
N
(2,950#)
N
N
(4,400#)
(3/4")
(5")
(7-1/2")
(4,275#)
(4,300#)
(3,200#)
22.2
152.4
133.4m
266.7mm
11,300 N
16,460
11,300 N
18,015
11,300
18,015 N
mm
mm
m
(10-1/2")
(2.550#)
N
(2,550#)
N
N
(4,050#)
(7/8")
(6")
(5-1/4")
(3,700#)
(4,050#)
(2,550#)
25.4 mm
177.8 mm
152.4mm
304.8mm
13,570 N
18,350 N
14,460 N
20.020 N
16,235 N
23,575 N
(1")
(7")
(6")
(12")
(3.050#)
(4,125#)
(3,250#)
(4,500#)
(3,650#)
(5,300#)
28.6 mm
203.2 mm
171.5mm
342.9mm
15,120 N
21,130 N
15,120 N
21,130 N
15,120 N
21,130 N
(1 1/8")
(8")
(6-3/4")
(13-1/2")
(3,400#)
(4,750#)
(3,400#)
(4,750#)
(3,400#)
(4,750#)
31.8 mm
228.6 mm
190.5mm
381.0mm
17,790 N
25,800 N
17,790 N
25,800 N
17,790 N
25,800 N
(1 1/4")
(9")
(7-1/2")
(15")
(4,000#)
(5,800#)
(4,000#)
(5,800#)
(4,000#)
(5,800#)
d. Adhesive (Chemical) Anchors. Adhesive anchors consist of a threaded rod installed in
a hole drilled in hardened concrete and filled with a two-component epoxy, polyester, or
vinylester resin adhesive. The hole is about 3 mm (1/8") larger than the bolt diameter.
Adhesive anchors should not be used in structural elements that are required to be fire
resistant. They should not be installed in wet or damp conditions or in concrete where there is
obvious signs or cracking, or deterioration. No specific design codes are available for
adhesive anchors. Therefore, design should be based on the manufacture recommendations,
and testing should be required to assure the installed anchors meet strength requirements.
Additional guidance on adhesive anchors can be found in the ACI Paper entitled "Bond Stress
Model for Design of Adhesive Anchors", by Cook, R.A., Doerr, G.T., and Klingner, R.E., ACI
Journal / Sept-Oct 1993.
4-9
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