Maximum Distance Between Intermittent Fillet Welds per AISC Section E6.1(b)

Maximum distance between the intermittent fillet welds according to AISC Section E6.1(b)

r_{i} = \sqrt{\frac{I_{xi}}{A_{i}}} = \sqrt{\frac{0.0352 {in}^{4}}{3.0 {in}^{2}}} = 0.108 in

a_{\max} = 40 r_{i} = 40 \cdot 0.108 in = 4.33 in \to use 4.0 in

r_i	Radius of gyration of (1) plate
I_xi	bt³/12 = [(8.0in) . (0.375in)³]/12 =0.0352in⁴ (one plate)
A_i	Area of (1) plate = t w = (0.375in)(8in) = 3.0in²
a_max	Maximum distance between the intermittent fillet welds

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