CE Board Exam Randomizer

Spacing of Bolts/Rivets in Built-up Beams

$$ S = \dfrac{R I}{V Q} $$

where:

• $S$ = spacing of bolts/rivets
• $R$ = shear force that the bolts/rivets can resist    $R = F_v (A_b)$
• $F_v$ = maximum allowable shear stress of bolt/rivet
• $A_b$ = cross-sectional area of a single bolt/rivet    $A_b = \dfrac{\pi d_b^{2}}{4}$
• $d_b$ = bolt/rivet diameter
• $I$ = moment of inertia of the beam built-up section
• $V$ = shear force on the beam
• $Q$ = statical moment of the section above the discontinuity    $Q = A \bar{y}$

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