ANNEXURE I, DOC NO.
PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
Material Data
Anchor Bolt Type
GRADE
Bolt Steel Tensile Strength
fut
Concrete compressive strength
f'cu
=
=
4.6
58000 psi
400 N/mm2
4350 psi
30 N/mm2
f'cu factor for concrete cylinder
Strength of Conc. After cylinder factor=
fyRebar =
Rebar yeild strength
3480 psi
24.0 N/mm2
60175 psi
415 N/mm2
Try Anchor Bolt Diameter
M 30
Diameter of Bolt
do
Edge Distance
Bolt Spacing=
max(5d o , 6 . 0)
max( 7d o , 6 )
C1 = C2 =
S1 = S2 =
Sleeve Required
1.18 inch
6 inch
8.26 inch
(yes/no)
Yes
14d o
Ldmin=
Min Embedment
16.52 inch
16.54 inch
Lds = min(Ld, 8 x do)
9.44 inch
Cv
3 inch
7 inch-1
Embedment Depth provided
Ld
Embeded length for Shear,
0.8
Concrete Cover
Thread per inch =
(Refer AISC Steel Manual 9th edition pg 4-147)
Bolt Head Diameter =
du (for headed bolts)
1.875 inch
(Refer AISC Steel Manual 9th edition pg 4-143)
du (for Bolt with Anchor plate)
[ (
Tensile Stress Area
Bolt Head Bearing Area
Abrg =
[ 0 . 866 ( d
Abrg =
[ 0 . 866 ( d
2
) ( d
2
) ( d
)]
0.85 inch2
)/ 4]
1.95 inch2
0. 9743
0 . 7854 d o
n
Ase =
3.54 inch
(for Headed Bolt)
Bolt Head Bearing Area
)/ 4]
9.78 inch2
(for Bolt with Anchor Plate)
Steel Strength (0.75*s_ten Ns)
s_ten
Ns=
=
Ase*fut
0.75*s_ten Ns
0.8 (refer ACI 318-02-D-4.5.a.i)
49352 lbf
29611 lbf per bolt
132 kN for M30
Concrete Strength
c_ten
0.80 (refer ACI 318-02-D-4.5.c.ii)
c_shear
0.75
Tension pull out strength for head bolt ,(0.75*c_ten Npn)
(refer ACI 318-02-D-5.3)
ANNEXURE I, DOC NO. PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
Np=
Abrg*8*f'c
54314.2489 lbf
for Headed Bolt
272249.123 lbf
For Bolt with Anchor Plate
Npn=
0.75*c_ten Npn=
1.0
54314.2489 lbf
(for Bolt with Head)
272249.123 lbf
(for Bolt with Anchor Plate)
32588.5493 lbf
145 kN for M30
(for Bolt with Head)
163349.474 lbf
726 kN for M30
(for Bolt with Anchor Plate)
Side Face Blow out strength ,(c_ten Nsb)
Cmax
5 x do
6.00 inch
Cmin
3.5 x do
4.13 inch
0.50
0.61
0.61
Reduction Factor 1
Reduction Factor 2
Reduction Factor 3
if Cmax 3 C min , 0 . 25 1+
if S 16 C 2 ,0 . 5 1+
if S 2 6 C1 ,0 . 5 1+
Cmax
C MIN
S1
6 C2
S2
6 C1
,1
,1
,1
For One Bolt,
Reduction factor =
Min (Reduction Factor 1, Reduction Factor 2 & Reduction factor 3)
=
Nsb
160 Cmin
A brg '
f c reductionfactor
1
0.50
27224 lbf
(for Bolt with Head)
= 60950.6428 lbf
(for Bolt with Anchor Plate)
0.75*c_ten Nsb
21779.1999 lbf
97 kN
(for Bolt with Head)
48760.5142 lbf
217 kN
(for Bolt with Anchor Plate)
Concrete Breakout Strength of Anchor Bolt in Tension:
Refer Cl. D.5.2.1 of ACI 318 - 2, Concrete Breakout Strength for a Single Anchor Bolt,
N cb =
Where,
AN
ANo
AN
A No
2 3 N b
179.48
(Larger than other values for Tension in Bolt)
=
Total Projected area for anchor bolt
(C1 + 1.5 Ld) x (C2 + 1.5 Ld), for corner bolt
Maximum Area for a single bolt
948.83
ANNEXURE I, DOC NO. PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
9 Ld2
(2 x 1.5 Ld) x (2 x 1.5 Ld)
0.7 + 0.3 x min(C1, C2) / 1.5 Lds
1.25
Nb
16 sqrt(fc') x Ld^(5/3)
2460.78
0.827
101298
450.2
(for Cast-in-Anchors)
Steel Strength of Anchor Bolt in Shear
(refer ACI 318-02-D-6.1.2)
Nominal Shear Strength of Anchor Bolt,
Vs
0.6 Ase fut
Design Shear strength of Anchor Bolt, Vse
29610.95 lbf
22208.22 lbf
98.703 kN
Concrete Breakout Strength of Anchor in Shear
(refer ACI 318-02-D-6.2)
For Single Anchor Bolt,
V cb =
where,
Av
A vo
6 7 V b
6189.7 lbf
27.5 kN
Av
1.5 C1 x (1.5 C1 + C2)
135.0 inch2
Avo
4.5 x (C1)^2
162.0 inch2
0.7 + 0.3 C2 / 1.5 C1
1.4
Vb
Basic Concrete Breakout Strength in Shear for single Bolt
7 (Ld / do)^0.2 x sqrt(do) x sqrt(fc') x (C1)^1.5
0.9
(Ref Eq. D-23)
11554 lbf
51 kN
Concrete Breakout Strength of Anchor in Shear (For 4 Anchor Bolts in Group)
Refer Eq. D-21 of ACI 318-2
V cbg =
where,
Av
V
A vo 5 6 7 b
=
0.69
41153 lbf
183 kN
<&=
1.0
ev' = S/2 =
4.13
inch
182.3
inch2
1/(1 + (2ev' / 3c1)
Av
1.5 C1 x (C1 + C2 + S1)
Vb
7 (Ld / do)^0.2 x sqrt(do) x sqrt(fc') x (C1+S1)^1.5
42334 lbf
188 kN
(In group of Bolts, the strength Vb is determined based on the strength of the row of Anchors farthest
from the edge.)
Concrete Pryout Strength of Anchor Bolt:
Nominal Pryout Strength of Anchor Bolt,
where,
Vcp
kcp Ncb
kcp
2.0
148.28
kN
ANNEXURE I, DOC NO. PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
Concrete Breakout Strength for a Single Anchor Bolt in Shear,
N cb =
AN
A No
2 3 N b
74.14
(Larger than other values for Tension in Bolt)
ANNEXURE I, DOC NO. PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
Where,
AN
Total Projected area for anchor bolt
(C1 + 1.5 Lds) x (C2 + 1.5 Lds), for corner bolt
Maximum Area for a single bolt
(2 x 1.5 Lds) x (2 x 1.5 Lds)
0.7 + 0.3 x min(C1, C2) / 1.5 Lds
Nb
16 sqrt(fc') x Lds^(5/3)
ANo
9 E2
406.43
802.02
0.827
39798
176.9
(for Cast-in-Anchors)
Shear Strength of Anchor Bolt (for Single Bolt) = min(Vse, Vcb, Vcp) =
27.5
Summary of Ultimate Tensile Strength for Type I Anchor Bolt
Area of Bolt
Dia of Bolt
in mm2
Steel
Tensile
Strength
(kN)
Pull out
Strength in
Side
concrete blowout (kN)
(kN)
Concrete
Breakout
strength
(kN)
Tensile
Tensile
Strength of
Strength of
Anchor Bolt Anchor Bolt (in
(Calculated) STD Dwg)
M16
148.6
36
226
65
115
36
38
M20
243
58
322
97
138
58
59
M24
350.6
84
509
145
170
84
89
M30
549
132
726
217
179
132
124
M36
801
192
1088
319
245
192
183
M42
1099
264
1398
421
313
264
241
M48
1456
349
1887
560
395
349
322
M56
1994
478
2598
764
508
478
439
M64
2626
630
3616
1033
632
630
592
Summary of Ultimate Tensile Strength for Type II Anchor Bolt
Area of Bolt
Dia of Bolt
in mm2
Steel
Tensile
Strength
(kN)
Pull out
Strength in
Side
concrete blowout (kN)
(kN)
Concrete
Breakout
strength
(kN)
Tensile
Tensile
Strength of
Strength of
Anchor Bolt Anchor Bolt (in
(Calculated) STD Dwg)
M16
148.6
36
33
25
115
25
20
M20
243
58
45
36
138
36
30
M24
350.6
84
93
62
170
62
45
M30
549
132
145
97
179
97
60
M36
801
192
166
125
245
125
88
M42
1099
264
259
181
312
181
119
M48
1456
349
370
248
395
248
157
M56
1994
478
450
318
508
318
213
M64
2626
630
534
397
632
397
277
ANNEXURE I, DOC NO. PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
Summary of Ultimate Shear Strength for Type I & Type II Anchor Bolt
Concrete
Breakout
Strength
(kN)
(b)
Concrete
Pryout
Strength
(kN)
(c )
Shear
Strength of
Anchor Bolt
(Calculated)
(min. of a, b
& c)
Shear
Strength of
Anchor Bolt
adopted (as
shown in
Std. Dwg.)
Remarks
Dia of Bolt
Area of Bolt
in mm2
Steel
Shear
Strength
(kN)
(a)
M16
148.6
26.7
18.3
93.8
18.3
12
OK
M20
243
43.7
21.3
107.5
21.3
19
OK
M24
350.6
63
24.2
122.1
24.2
22
OK
M30
549
98.7
27.5
148.3
27.5
25
OK
M36
801
144.1
40.4
199.4
40.4
40
OK
M42
1099
197.6
56.1
256
56.1
55
OK
M48
1456
261.8
75.8
321
75.8
72
OK
M56
1994
358.5
105.8
413.5
105.8
90
OK
M64
2626
472.1
142.5
518.6
142.5
125
OK
Notes:
1. Type I Anchor Bolt : Type I anchor bolt is with Anchor plate.
2. Type II Anchor Bolt : Type I anchor bolt is with Nut at bottom or with Head.
3. Tensile Strength of Anchor Bolt is minimum of Tensile Strength of Steel, Pullout Strength of Concrete, Side
Blowout Strength and Concrete Breakout Strength of Anchor in Tension.
4. Shear Strength of Anchor Bolt is minimum of Shear Strength of Steel, Concrete Breakout Strength of anchor
and Concrete Pryout Strength in Shear.
5. Above tabulated strength is calculated for single bolt with min. edge distances in two directions,
6. Above tabulated strength of Anchor bolts does not consider force transfer through reinforcements.
7. The above tabulated values are Ultimate Strength of Bolts.
8. Normal Strength of Bolt is calculated by Dividing Ultimate Strength with a factor 1.6 (conservatively).
ANNEXURE I, DOC NO. PS14333-G0000-CS-SDG-A1-1005 'CIVIL STRUCTURE STANDARD DRAWINGS - ANCHOR BOLTS DETAIL'
PAGE
OF 6
Shear Capacity of Washer Plate and Weld for Washer Plate with Base Plate:
M 30
Size of Anchor Bolt
Dia of Anchor Bolt,
do
30
mm
Dia of Washer Plate,
dw
70
mm
Thickness of Washer plate,
tw
mm
>
(As plate edge distance shall be min. 1.5 times of bolt dia, so washer dia shall be min. 1.5 times dia of bolt).
Tensile Strength of Plate,
pt
240
N/mm2
Hole dia in Washer plate,
dwo
33
mm
Tearing Strength of Plate,
Tp
pt x (dw - dwo) x tw
53.28
kN
39
kN
mm
219.91
mm
N/mm2
Shear Capacity of Anchor Bolt Used,
Weld thickness
V
th
Length of Weld (alround outside washer plate), l w
Strength of Weld
220
Shear Capacity of Weld,
Fw
w x lw x 0.707 x th
102.6
kN
<
>
OR BOLTS DETAIL'
PAGE
OF 6
M30
eaded Bolt)
th Anchor Plate)
OR BOLTS DETAIL'
PAGE
OF 6
lt with Head)
th Anchor Plate)
lt with Head)
th Anchor Plate)
lt with Head)
th Anchor Plate)
lt with Head)
th Anchor Plate)
kN
Tension in Bolt)
inch2
OR BOLTS DETAIL'
PAGE
OF 6
inch2
lbf
kN
(Ref Eq. D-23)
Anchors farthest
OR BOLTS DETAIL'
PAGE
OF 6
kN
Tension in Bolt)
OR BOLTS DETAIL'
PAGE
OF 6
inch2
inch2
lbf
kN
kN
Remarks
Revised
Revised
Revised
OK
OK
OK
OK
OK
OK
Remarks
OK
OK
OK
OK
OK
OK
OK
OK
OK
OR BOLTS DETAIL'
PAGE
OF 6
Concrete
Breakout
Strength
for 4
Bolts in
group
(kN)
91
106
131
183
273
379
512
715
963
Concrete, Side
trength of anchor
ons,
ments.
OR BOLTS DETAIL'
PAGE
OF 6
ith Base Plate:
1.5 d0
OK
es dia of bolt).
53.28
OK
39
OK
DIA OF BOLT
M16
M20
M24
M30
M36
M42
M48
M56
M64
BOLT HEAD DIA THREAD PER INCH Anchor Plate Dia Washer Dia (mm)
0.938
11
1.97
40
1.125
10
2.36
50
1.5
9
2.95
60
1.875
7
3.54
70
2.1
6
4.33
80
2.55
5.5
4.92
90
3
5
5.71
100
3.375
4.5
6.69
120
3.75
4
7.87
140
Washer Thk (mm)
3
3
6
6
6
8
8
10
10
V (kN)
E
12
19
27
39
53
68
68
82
82
260
320
390
420
510
590
680
790
900
AS PER ACI
Dia of Bolt
Area of
Bolt in
inch
Area of
Bolt in
mm2
Tensile
Strength of
Steel(kN)
M16
M20
M24
M30
M36
M48
M56
M64
M80
0.23
0.38
0.54
0.85
1.24
2.26
3.09
4.07
6.63
148.6
243
350.6
549
801
1456
1994
2626
4280
38
63
91
142
207
376
515
679
1106
Pull out
Strength in
concrete
(kN)
31
42
87
136
156
347
422
500
678
Side
blowout
(kN)
36
44
75
117
150
299
383
478
696
