# Joining Plates Design per AISC 360-16

How does ideCAD design joining plate connection according to AISC 360-16?

• Joining plate connection limit states and geometry checks are done automatically according to AISC 360-16.

Symbols

Ab: Non-threaded bolt web characteristic cross-sectional area
Ag: Gross area
An: Net cross-section area
d: Characteristic diameter of the stem of the bolt (the diameter of the non-threaded stem of the bolt)
dh: Bolt hole diameter
Fy: Structural steel characteristic yield strength
Fu: Structural steel characteristic tensile strength
Fyb: Bolt characteristic yield strength
Fub: Bolt characteristic tensile strength
s: Distance between bolt-hole centers
Lc: The clear distance between bolt holes
Le: The distance from the center of the bolt hole to the edge of the assembled element
Leh: The horizontal distance from the center of the bolt hole to the edge of the assembled element
Lev: The vertical distance from the center of the bolt hole to the edge of the assembled element
tp: Plate thickness
Pt: Bolt tensile strength
Rn: Characteristic strength
w: Size of weld leg, in. (mm)

### GEOMETRY CHECKS

#### Horizontal Edge Distance

The distance from the center of the hole to the edge of the connected part in the horizontal direction is checked per AISC 360-16.

 Leh ≥ Le-min AISC 360-16 J3.4 Leh 55 mm Leh ≥ 2d = 2 * 24 = 48 mm conformity check for application √ Le- min 30 mm Minimum distance check according to Table J3.4 √

#### Vertical Edge Distance

The distance from the center of the hole to the edge of the connected part in the vertical direction is checked per AISC 360-16.

 Lev ≥ Le-min AISC 360-16 J3.4 Lev 51.519 mm L eh ≥ 2d = 2 * 24 = 48 mm conformity check for application √ Le-min 32 mm Minimum distance check according to Table J3.4 √

#### Weld Size

The minimum size of fillet welds is checked according to AISC 360-16 Table J2.4

 w ≥ wmin AISC 360-16 J2.4 w 8.487 mm √ wmin 5 mm Table J2.4 √

### STRENGTH CHECKS

#### Bolt Tension at Support

Bolt tensile strength is checked due to axial force and bending moment interaction effect.

 Ft 750000 kN/m2 Ab AISC DG-4-2nd3.7 Pt h0 473.038 mm h1 315.271 mm dm 394.154 mm Mreq 119.655 kNm Nreq -27.504 kN Rreq Rn ΦRn

Required

Available

Ratio

Control

289.822 kN

1017.876 kN

0.285

#### End Plate Thickness

The required end plate thickness, tp, for four bolts stiffened end plate connection is checked according to AISC 358-16 §6.8

 Ab Pt Mn AISC 358-16 (6.8-5) Fyp 235000 kN/m2 Yp 2517.347 mm tp

Required

Available

Ratio

Control

28.921 mm

30 mm

0.964

#### End Plate Shear Yield

The shear strength of connecting elements in shear is the minimum value obtained according to the limit states of shear yielding and shear rupture. Shear yielding is checked according to AISC 360-16.

 Fyp 235000 kN/m2 Ag AISC 360-16 J4-3 dm 394.154 mm Mreq 119.655 kNm Nreq -27.504 kN Rreq Rn ΦRn

Required

Available

Ratio

Control

289.822 kN

1776.6 kN

0.163

#### End Plate Shear Rupture

The shear strength of connecting elements in shear is the minimum value obtained according to the limit states of shear yielding and shear rupture. Shear rupture is checked according to AISC 360-16.

 Fu 360000 kN/m2 An AISC 360-16 J4-4 dm 394.154 mm Mreq 119.655 kNm Nreq -27.504 kN Rreq Rn ΦRn

Required

Available

Ratio

Control

289.822 kN

1477.44 kN

0.196

#### Bolt Shear at Support

The calculation is made using the Elastic method, one of the methods selected in the steel analysis settings tab. For the details of this check, AISC Manual 14th 7-8 is used as a reference. In this check, the operation is performed on half of the symmetry axis and is calculated to form a force pair with the required force.

 Ab Fnv Rn AISC 360-16 J3-1 ΦRn

Required

Available

Ratio

Control

5.313 kN

610,725 kN

0.009

#### Bolt Bearing on End Plate

Bearing strength limit states of the connection plate that are “shear tear out” and “ovalization of bolt hole” for both end and inner bolts are checked according to AISC 360-16.

 dh 24+3=27 mm Lc,edge Rn AISC 360-16 J3-6a Rn-edge Lc,spacing Rn-spacing Rn ΦRn

Required

Available

Ratio

Control

5.313 kN

1672.2kN

0.003

#### Weld Size

The required end weld size is checked according to AISC DG-4.

 Fyp 235000 kN/m2 AISC DG-4-2 nd2.1.7 tbw 9 mm Fe 480000 kN/m2 w

Required

Available

Ratio

Control

3.97 mm

8.487 mm

0.468

#### Weld Strength

The required end weld strength is checked according to AISC DG-4.

 w 8.487 mm FE 480 N/mm2 le 190.193 mm Rn AISC DG-4-2 nd2.1.8 ΦRn

Required

Available

Ratio

Control

5.313 kN

492.981 kN

0.011

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