8/13/2019 Bolt Capacity2

http://slidepdf.com/reader/full/bolt-capacity2 1/2

Date

Dsn. By

Chk. By

Rev. No.

Bolt Grade Gr. 8.8 Design Basis

Fu = 800 N/mm2 Ω =

Fnt = 600 N/mm2 0.75 Fu Rnv = kN J3-1

Fnv = 320 N/mm2 0.40 Fu Rnt = kN J3-1

Rnb = kN J3-6a

12 113.10

16 201.06

20 314.16

24 452.39

27 572.56

30 706.86

33 855.30

36 1017.88

Combined Tension and Shear in Bearing Type Connections

Rn = J3-2

F'nt = 1.3 Fnt - Fnt f v / ( Ф Fnv ) <= Fnt LRFD J3-3a

F'nt = 1.3 Fnt - Ω Fnt f v / Fnv <= Fnt ASD J3-3b

Calculate Allowable Tension for a Given Bolt Diameter and calculated Shear Force

Bolt Diameter (db) = 33 mm Ab = 855.30 mm2

Shear Force (V) = 120 kN f v = 140.30 N/mm2

 Allowable Tension = 108.57 kN F'nt = 254 N/mm2

Bearing CapacityPlate Material Grade A572

Fu = 450 N/mm2 (Minimum of Bolt Material or Plate Material)

12 16 20 22 24 27 30 33 36

4 25.92 34.56 43.20 47.52 51.84 58.32 64.80 71.28 77.76

5 32.40 43.20 54.00 59.40 64.80 72.90 81.00 89.10 97.20

6 38.88 51.84 64.80 71.28 77.76 87.48 97.20 106.92 116.64

8 51.84 69.12 86.40 95.04 103.68 116.64 129.60 142.56 155.52

10 64.80 86.40 108.00 118.80 129.60 145.80 162.00 178.20 194.40

12 77.76 103.68 129.60 142.56 155.52 174.96 194.40 213.84 233.28

16 103.68 138.24 172.80 190.08 207.36 233.28 259.20 285.12 311.04

20 129.60 172.80 216.00 237.60 259.20 291.60 324.00 356.40 388.80

25 162.00 216.00 270.00 297.00 324.00 364.50 405.00 445.50 486.00

305.36

64.34

100.53144.76

183.22

226.19

273.70

325.72

60.32

94.25135.72

171.77

212.06

256.59

Diameter

(mm)

Gross Area

(mm2)

Double Shear (kN)

2 Rn

Plate Thk.

(mm)

Bolt Diameter Capacity in Bearing (kN)

18.10

Single Shear (kN)

Rnv

36.19

Tension (kN)

Rnt

33.93

F'nt Ab / Ω

162.86

136.85

113.10

91.61

72.3850.27

32.17

Standard Connection Bolts03-Aug-06

ZAS

SKK

0Design Capacities (AISC 2005)

2.4 d t Fu / Ω

Fnt Ab / Ω

Fnv Ab / Ω

2.00

ASD

8/13/2019 Bolt Capacity2

http://slidepdf.com/reader/full/bolt-capacity2 2/2

Date 03-Aug-06

Dsn. By ZAS

Chk. By SKK

Rev. No. 0

Tension kN Torque N-m

Bolt Size, mm A325M Bolts A490M BoltsM12 - - 38 87

M16 91 114 72 214

M20 142 179 116 431

M22 176 221 144 586

M24 205 257 168 745

M27 267 334 218 1090

M30 326 408 267 1480

M33 - - 330 2013

M36 475 595 388 2586

Fu Fnt = 0.75 Fu Fnv = 0.40 Fu Fp = 2.4 Fu

A36 400 300 160 960

A307 413 310 165 991

Gr. 8.8 800 600 320 1920

A325 826 620 330 1982

A490 1040 780 416 2496

M16 18 20 18 x 22 18 x 40

M20 22 24 22 x 26 22 x 50

M22 24 28 24 x 30 24 x 55

M24 27 30 27 x 32 27 x 60

M27 30 35 30 x 37 30 x 67

M30 33 38 33 x 40 33 x 75

>= M36 d + 3 d + 8 ( d + 3 ) x ( d + 10 ) ( d + 3 ) x ( 2.5 d )

M16

M20

M22

M24

M27

M30

M36

Over M36

Short Slots Long Slots[a]

<= 22 2 3

24 3 3

>= 27 3 5

Standard Connection Bolts

[a] When length of slot is less than maximum allowable (see Table J3.3M), C2 is permitted to be reduced by one-half the difference

between the maximum and actual slot lengths

Slotted Holes

Long Axis Perpendicular to EdgeOversized Holes Long Axis Parallel to

Edge

0.75 d 0

[b] For oversized or slotted holes, see Table J3.5M

Reference Tables (AISC 2005)

Nominal Bolt

Diameter, mm

1.75 d 1.25 d

Minimum Edge Distance,[a]

 mm, from Center of Standard Hole[b]

 to Edge of Connected Part

42 [d]

48

52

64

Values of Edge Distance Increment C2, mm

46

38

34

30

[a] Lesser edge distances are permitted to be used provided provisions of Section J3.10, as appropriate, are satisfied

[c] All edges distances in this column are permitted to be reduced 3 mm when the hole is at a point where required strength does not

exceed 25% of the maximum strength in the element.[d] These are permitted to be 32 m at the ends of beam connection angles and shear end plates

Table J3.5M

Bolt Diameter,mm

At Sheared Edges At Rolled Edges of Plates, Shapes or ars orThermally Cut Edges

[c]

38 [d]

26

2228

34

28

Oversize

(Dia)

Standard

(Dia)

Bolt Diameter,

mm

Table J3.4M

Long Slotted (

W x L )

Short Slotted (

W x L )

Nominal Hole Dimensions, mm

Table J3.3M

* - Bearing Strength is for bolts with Standard, Oversized, and short slotted holes (J3-6a)

Specified Min.

Tensile Strength

Nominal Tensile

StressNominal Shear Stress

Nominal Bearing*

StressBolt Material

* - Equal to 0.70 times the minimum tensile strength of bolts, rounded off to nearest kN, as

specified in ASTM Specification for A325M and A490M bolts with UNC threads

Minimum Bolt Pretension, kN*

Table J3.1M

Grade 8.8

Table J3.2Nominal Stress of Fasteners and Threaded Parts (Mpa) (N/mm

2)