D5Pin-connected members

D5.1 Tensile Strength

The design tensile strength, $\phi_{t} P_{n}$, and the allowable tensile strength, $P_{n} / \Omega_{t}$, of pinconnected members, shall be the lower value determined according to the limit states of tensile rupture, shear rupture, bearing, and yielding.

(a) For tensile rupture

• (b) For shear rupture

where $A_{sf} = 2t(a+d/2)$ = area on the shear failure path, $\text{in.}^2 \,(\text{mm}^2)$

• Cr = reduction factor for shear rupture on pin-connected members
• = 1.0 when $d_{h}-d \leq{ }^{1} / 32$ in. (1 mm)
• $=0.95$ when $\frac{1}{32}$ in. $<d_{h}-d \leq \frac{1}{16}$ in. $(1 \mathrm{~mm}<d_{h}-d \leq 2 \mathrm{~mm})$
• $\begin{aligned} a & =\text { shortest distance from edge of the pin hole to the edge of the member } \\ & \text { measured parallel to the direction of the force, in. (mm) }\end{aligned}$
• $b_{e}=2 t+0.63$, in. $(=2 t+16, \mathrm{~mm})$, but not more than the actual distance from the edge of the hole to the edge of the part measured in the direction normal to the applied force, in. (mm)
• $d \quad=$ diameter of pin, in. (mm)
• $d_{h}=$ diameter of hole, in. (mm)
• $t \quad$ = thickness of plate, in. (mm)
• (c) For bearing on the projected area of the pin, use Section J7.
• (d) For yielding on the gross section, use Section D2(a).

D5.2 Dimensional Requirements

Pin-connected members shall meet the following requirements:

• (a) The pin hole shall be located midway between the edges of the member in the direction normal to the applied force.
• (b) When the pin is expected to provide for relative movement between connected parts while under full load, the diameter of the pin hole shall not be more than 1/32 in. (1 mm) greater than the diameter of the pin for pins less than 3 in. (75 mm) in diameter and not more than 1/16 in. (2 mm) greater than the diameter of the pin for pins of 3 in. (75 mm) in diameter or greater.
• (c) The width of the plate at the pin hole shall not be less than $2 b_{e}+d$ and the minimum extension, $a$, beyond the bearing end of the pin hole, parallel to the axis of the member, shall not be less than $1.33 b_{e}$.
• (d) The corners beyond the pin hole are permitted to be cut at 45° to the axis of the member, provided the net area beyond the pin hole, on a plane perpendicular to the cut, is not less than that required beyond the pin hole parallel to the axis of the member.