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| body | $$ \normalsize \phi_n = 0.90 $$ |
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| body | $$ \normalsize \phi_d = 1.00 $$ |
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Distance from the face of the column to the plastic hinge,
Sh, for bolted flange plate moment connections, is calculated by using the equation given below according to AISC 358-16
Eq. 7.6-5.
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| body | --uriencoded--$$ \normalsize S_h = S_1+s \Big( \dfrac%7Bn%7D%7B2%7D-1 \Big) $$ |
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The probable maximum moment at the plastic hinge is given below, according to AISC 358-16.
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| body | --uriencoded--$$ \normalsize M_%7Bpr%7D = C_%7Bpr%7Dr_yF_yZ_e $$ |
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| body | --uriencoded--$$ \normalsize C_%7Bpr%7D = \dfrac%7BF_y+F_u%7D%7B2F_y%7D \le1.2$$ |
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The moment at the face of the column, Mf., is calculated according to AISC 358-16 Eq. 6.8-1 given below.
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| body | --uriencoded--$$ \normalsize M_%7Bf%7D = M_%7Bpr%7D+V_uS_h $$ |
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The Vu used in the dimensioning of the joint is determined according to the equation in the above image by summing the shear force determined based on the yield state and the shear force calculated from the combination of 1.2G + 0.5Q + 0.2S on the plastic joint at the end of the beam.
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| body | --uriencoded--$$ \normalsize V_%7Bu%7D = \dfrac%7B2M_%7Bpr%7D%7D%7BL_h%7D +V_%7Bgravity%7D$$ |
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PREQUALIFICATION LIMITS
Beam Limitations
Beam depth is limited to a maximum of 36 in. (920 mm) for rolled shapes. The depth of built-up sections does not exceed the depth permitted for rolled wide-flange shapes.
Beam flange thickness is limited to a maximum of 1 in. (25 mm).
The clear span-to-depth ratio of the beam is limited as follows:
For special moment frame systems, 9 or greater.
For intermediate moment frame systems, 7 or greater.
Column Limitations
The beam is connected to the flange of the column.
Rolled-shape column depth is limited to a maximum of 36 in. (920 mm) when a concrete structural slab is provided. In the absence of a concrete structural slab, the rolled-shape column depth is limited to a maximum of 14 in. (360 mm).
Flanged cruciform columns don’t have a width or depth greater than the depth allowed for rolled shapes. Built-up box columns don’t have a width or depth exceeding 24 in. (600 mm). Boxed wide-flange columns don’t have a width or depth exceeding 24 in. (600 mm) if participating in orthogonal moment frames.
The probable maximum moment at the plastic hinge is given below, according to AISC 358-16.
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| body | --uriencoded--$$ \normalsize M_%7Bpr%7D = C_%7Bpr%7Dr_yF_yZ_e $$ |
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| body | --uriencoded--$$ \normalsize C_%7Bpr%7D = \dfrac%7BF_y+F_u%7D%7B2F_y%7D \le1.2$$ |
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The moment at the face of the column, Mf., is calculated according to AISC 358-16 Eq. 6.8-1 given below.
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| body | --uriencoded--$$ \normalsize M_%7Bf%7D = M_%7Bpr%7D+V_uS_h $$ |
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The Vu used in the dimensioning of the joint is determined according to the equation in the above image by summing the shear force determined based on the yield state and the shear force calculated from the combination of 1.2G + 0.5Q + 0.2S on the plastic joint at the end of the beam.
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| body | --uriencoded--$$ \normalsize V_%7Bu%7D = \dfrac%7B2M_%7Bpr%7D%7D%7BL_h%7D +V_%7Bgravity%7D$$ |
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