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Brace-Center Connection Design

Brace-Center Connection Design is explained in detail under this title.

Joint Geometry

Brace - to - Gusset Plate Connection

GEOMETRY CHECKS

Bolt Spacing

smin ≥ 3d       

AISC 360-16 J3.3

 

 

s

60 mm

 

 

d

20 mm

s =60 mm > smin = 3*20=60 mm

Horizontal Edge Distance

Leh ≥ L e- min     

AISC 360-16 J3.4

 

 

Leh

69.85 mm

 

Le- min

26 mm

Minimum distance check according to Table J3.4

Vertical Edge Distance

Lev ≥ Le- min     

AISC 360-16 J3.4

 

 

Lev

45 mm

Conformity check for Leh ≥ 2d = 2 * 20 = 40 mm application

Le- min

26 mm

Minimum distance check according to Table J3.4

Weld Size

w ≥ wmin     

AISC 360-16 J2.4

 

 

w

5.658 mm

 

wmin

5 mm

Table J2.4

STRENGTH CHECKS

Bolt Shear at Brace

Ab

Fn

Rn

AISC 360-16 J3-1

ΦRn

Required

Ready

Rate

Control

205.872 kN

212.058 kN

0.971

Bolt Bearing on Plate

dh

20+2=22 mm

 

Lc,edge

 

Rn

AISC 360-16 J3-6a

Rn-edge

 

Lc,spacing

 

Rn-spacing

 

Rn

 

ΦRn

Required

Ready

Rate

Control

205.872 kN

456.84 kN

0.451

Bolt Bearing on Gusset

dh

20+2=22 mm

 

Lc,edge

 

Rn

AISC 360-16 J3-6a

Rn-edge

 

Lc,spacing

 

Rn-spacing

 

Rn

 

ΦRn

Required

Ready

Rate

Control

205.872 kN

304.56 kN

0.676

Weld Strength

Fe

490000 kN/m2

w

5.658 mm

Fu-plate

469.999  N/mm2

Fu-brace

410 N/mm2

tplate

15 mm

AISC 360-16 J3-6a

tbrace

15 mm

lw

150 mm

Rnw

Rn-plate

RnBM

Rn

ΦRn

 

Required

Ready

Rate

Control

205.872 kN

529.2 kN

0.389

Whitmore Section Compression Yield

K

0.65

 

L

0 mm

 

r

2.887 mm

 

KL / r

0

 

Fy

355 N/mm2

 

Ag

1292.82 mm2

 

Rn

AISC 360-16 J4-6

ΦRn

 

Required

Ready

Rate

Control

205.872 kN

413.056 kN

0.498


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