Weld and Bolt Capacity — AISC 360-22 Chapter J

1 · Input data

One connection, to AISC 360-22, Chapter J — Design of Connections. Choose what is being checked and the page computes every limit state that applies, naming the clause and the table behind every coefficient. A welded joint uses J2.1a and J2.2a (effective areas), J2.2b with Table J2.3 (the minimum effective throat of a partial-joint-penetration groove weld) and Table J2.4 (the minimum size of a fillet weld), J2.3a (plug and slot welds), and J2.4 with Table J2.5 (the available strength of welded joints: the weld metal and the base metal, the directional increase k_ds of Eq. J2-5, and the fillet shear row with its footnote [d] to J2.4(a)). A bolt group uses J3.7 and Table J3.2 (nominal stress of fasteners and threaded parts: shear and tension rupture, and the 83.3% end-loaded reduction of footnote [c]), J3.8 (combined tension and shear, with F′_nt and its cap), J3.9 and J3.10 with Table J3.1 (minimum bolt pretension) and Table J3.3 (nominal hole dimensions) (slip resistance and the k_sc factor), and J3.11a (the bearing and tear-out pair, Eqs. J3-6a to J3-6f). The affected element uses J4.1, J4.2 and J4.3 (tensile yielding and rupture, shear yielding and rupture, and block shear of Eq. J4-5). LRFD carries the φ of each clause and ASD its Ω. This page checks one connection: it does not size the member, and it does not check spacing, edge distance or hole dimensions (J3.3 to J3.6). A field the chosen connection does not read is optional; a field it does read is required, and Solve names every one that is missing or malformed.

The connection

Design method

What is being checked

F_y of the connected material, ksi

F_u of the connected material, ksi

Required strength P_u, kip — optional

The weld — J2 (used when a welded joint is checked)

Weld type

Electrode strength F_EXX, ksi

Thickness of the thinner part joined, in.

Base metal area A_BM, in²

Fillet weld leg size w, in.

Weld length l, in.

Angle θ between the force and the weld axis, degrees

Effective throat t_e of the groove weld, in.

Plug or slot weld area A_we, in²

Strain compatibility is considered (Eq. J2-5)

End-loaded (Eq. J2-1; Table J3.2 footnote [c])

The bolt group — J3 (used when a bolt group is checked)

Bolt group

Nominal bolt diameter d, in.

Number of bolts

Shear planes n_s

F_u of the threaded part, ksi

Fastener pattern length, in.

Required shear stress f_rv, ksi — optional

Clear distance l_c in the direction of the force, in.

Connected material thickness t, in.

Hole type (Table J3.3)

Threads excluded from the shear planes (X)

Deformation at the bolt hole is a design consideration

Slip-critical — J3.9 and J3.10 (used when a slip-critical connection is checked)

Class of faying surface

Fillers between the connected parts

Minimum bolt pretension T_b, kip (Table J3.1)

Required tension on the connection T_u, kip

The affected element — J4 (optional; each row appears when its areas are entered)

Gross area A_g, in²

Effective net area A_e, in²

Gross shear area A_gv, in²

Net shear area A_nv, in²

Net tension area A_nt, in²

Block shear tension stress — U_bs

A welded joint reads only the weld fields; a bolt group reads only the bolt fields, and a slip-critical connection additionally reads the slip fields. The J4 areas are optional and independent: enter an area and its limit state appears, leave it blank and it does not. The page never invents a value for a field it was not given, and it refuses a value outside what Chapter J permits rather than approximating it.

2 · Solution

No solution yet — complete the card above and press Compute capacity. This card stays empty until a solution is computed, and it is emptied again the moment any input changes, so a displayed solution always belongs to the inputs on screen.