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CONNECTIONS, JOINTS, AND FASTENERS
[Chap J
TABLE J3.3 Nominal Hole Dimensions Hole Dimensions Bolt Diameter
Standard (Dia.)
Oversize (Dia.)
1⁄ 2 5⁄ 8 3⁄ 4 7⁄ 8
9⁄ 16 11⁄ 16 13⁄ 16 15⁄ 16 11⁄16 d + 1⁄16
5⁄ 8 13⁄ 16 15⁄ 16 1 1 ⁄16 11⁄4 d + 5⁄16
1 ≥11⁄8
Short-slot (Width × Length)
(d
Long-slot Width × Length)
9⁄ × 11⁄ 16 16 11⁄ × 7⁄ 16 8 13⁄ × 1 16 15⁄ × 11⁄ 16 8 11⁄16 × 15⁄16 + 1⁄16) × (d + 3⁄8)
(d
9⁄ × 11⁄ 16 4 11⁄ × 19⁄ 16 16 13⁄ × 17⁄ 16 8 15⁄ × 23⁄ 16 16 11⁄16 × 21⁄2 + 1⁄16) × (2.5 ×
d)
TABLE J3.4 Minimum Edge Distance,[a] in. (Center of Standard Hole[b] to Edge of Connected Part) Nominal Rivet or Bolt Diameter (in.) 1⁄ 2 5⁄ 8 3⁄ 4 7⁄ 8
1 11⁄8 11⁄4 Over 11⁄4
At Sheared Edges
At Rolled Edges of Plates, Shapes or Bars, or Gas Cut Edges [c]
7⁄ 8
11⁄8 11⁄4 11⁄2 [d] 13⁄4 [d] 2 21⁄4 13⁄4 × Diameter
3⁄ 4 7⁄ 8
1 11⁄8 11⁄4 11⁄2 15⁄8 11⁄4 × Diameter
[a] Lesser edge distances are permitted to be used provided Equations from J3.10, as appropriate, are satisfied. [b] For oversized or slotted holes, see Table J3.8. [c] All edge distances in this column are permitted to be reduced 1⁄8-in. when the hole is at a point where stress does not exceed 25 percent of the maximum design strength in the element. [d] These are permitted to be 11⁄4-in. at the ends of beam connection angles and shear end plates.
in Section J3.10. The distance from the center of an oversized or slotted hole to an edge of a connected part shall be not less than that required for a standard hole to an edge of a connected part plus the applicable increment C2 from Table J3.8. Refer to Section J3.10 for bearing strength requirement. 5.
Maximum Spacing and Edge Distance The maximum distance from the center of any bolt or rivet to the nearest edge of parts in contact shall be 12 times the thickness of the connected part under consideration, but shall not exceed six inches. The longitudinal spacing of connectors between elements in continuous contact consisting of a plate and a shape or two plates shall be as follows: (a) For painted members or unpainted members not subject to corrosion, the AMERICAN INSTITUTE OF STEEL CONSTRUCTION