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How does ideCAD design unstiffened seated connection according to AISC 360-16?

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Connection Geometry

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Geometry Checks

Weld Size

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

Strength Checks

Beam Web Yielding

The limit state of web local yielding for single-concentrated forces and both components of double-concentrated forces are checked according to AISC 360-16.

tw	7.1 mm
lb	25.7 mm
to	10.7 + 15 = 25.7 mm (Beam flange + Beam flange radius)
Fy	235.359 N/mm2
Rn

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	Mathinline body $$ \normalsize R_n = F_yt_w(2.5k + l_b) $$ Mathinline body --uriencoded--$$ \normalsize R_n = 235.359 \times 10%5e%7B-3%7D \times 7.1 \times ( 2.5 \times 25.7 + 25.7 ) = 150.31 \; \mathrm%7BkN%7D $$	AISC 360-16 Eq. J10-3
Rn / Ω

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Mathinline body --uriencoded--$$ \normalsize R_n/ \Omega = 150.31 / 1.5 =100.207 \; \; \mathrm%7BkN%7D $$

Beam Web Crippling

The limit state of web local crippling for single-concentrated forces and both components of double-concentrated forces are checked according to AISC 360-16.

tw	7.1 mm
tf	10.7 mm
lb	25.7 mm
d	300 mm
E	205939650 kN/m2
Fy	235.359 N/mm2
Rn

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	Mathinline body --uriencoded--$$ \normalsize R_n = 0.4t%5e2_w \left [1+ 3 \left ( \dfrac%7Bl_b%7D %7Bd%7D \right ) \left ( \dfrac%7Bt_w%7D %7Bt_f%7D \right )%5e%7B1.5%7D \right] \sqrt%7B \dfrac%7BEF_%7Byw%7Dt_f%7D %7Bt_w%7D %7D $$	AISC 360-16 Eq. J10-5a

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	Mathinline body --uriencoded--$$ \small R_n = 0.4 \times 7.1%5e2 \left [1+ 3 \left ( \dfrac%7B25.7%7D %7B300%7D \right ) \left ( \dfrac%7B7.1%7D %7B10.7%7D \right )%5e%7B1.5%7D \right] \sqrt%7B \dfrac%7B205939650 \times 235.359 \times 10%5e%7B-3%7D \times 10.7 %7D %7B7.1%7D %7D $$ Mathinline body --uriencoded--$$ \small R_n = 196.275 \; \mathrm%7BkN%7D $$
Rn / Ω

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Mathinline body --uriencoded--$$ \normalsize R_n/ \Omega = 196.275 / 2 =98.138 \; \; \mathrm%7BkN%7D $$

Angle 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.

Ag

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Mathinline body --uriencoded--$$ \normalsize A_g = L_%7Bp%7D \times t_p =150 \times 10 = 1500 \; \; \mathrm%7Bmm%5e2%7D $$
Fy	235.359 N/mm2
Rn

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	Mathinline body --uriencoded--$$ \normalsize R_n = 0.6F_%7By%7DA_g = 0.6 \times 235.359 \times 10%5e%7B-3%7D \times 1500 = 211.823 \; \; \mathrm%7BkN%7D $$	AISC 360-16 J4-3
Rn / Ω

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Mathinline body --uriencoded--$$ \normalsize R_n/ \Omega = 211.823 / 1.5 = 141.215 \; \; \mathrm%7BkN%7D $$

Weld Strength at Support

Fe	480000 kN/m2
w	11.315 mm
Fu	362.846  N/mm2
l	110 mm
e	60mm
Rn	Mathinline body --uriencoded--$$ \normalsize R_n

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= \dfrac%7B 2 l%5e2 0.6 Fe 0.707 w%7D %7B\sqrt%7Bl%5e2 + 36 e%5e2%7D %7D $$ Mathinline body --uriencoded--$$ \normalsize R_n = \dfrac%7B 2 \times 110%5e2 \times 0.6 \times 480 \times 10%5e%7B-3%7D \times 0.707 \times 11.315%7D %7B\sqrt%7B110%5e2 + 36 \times 60%5e2%7D %7D = 148.114\; \mathrm%7BkN%7D $$

Rn / Ω

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Mathinline body --uriencoded--$$ \normalsize R_n/ \Omega = 148.114 / 2 = 74.057 \; \; \mathrm%7BkN%7D $$

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