AISC 360-22 · Imperial-native · Free

AISC 360-22 connection design.
Imperial-native. Free.

Bolt capacity, fillet weld sizing, and full portal frame design — calculated in ft, in, and kips. Built for US structural engineers, not converted from metric.

→ Bolt Capacity Calculator Weld Sizing Calculator
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AISC 360-22 Ch. J3

Bolt Capacity Calculator

Single-bolt φRn shear, tension, bearing, and tearout. A307, A325-N/X, A490-N/X, F3125 grades. Diameters ½″–1½″. Utilisation bar and governing mode.

Open calculator →
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AISC 360-22 §J2

Fillet Weld Sizing

φRn per inch with directional strength increase. E60XX–E100XX electrodes. Min/max leg size checks per §J2.2b and Table J2.4. Load angle 0°–90°.

Open calculator →
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NEW
AISC DG-4 · DG-1 · LRFD

Endplate Moment + Baseplate

4-bolt extended endplate moment (DG-4 Eq. 3.2 yield-line Yp) + column baseplate (DG-1 cantilever model). A325/A490 bolt escalation. ASTM F1554 anchor rods. E70XX welds.

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SAMPLES
AISC 360-22 · 3 worked examples

Download real outputs

Warehouse portal frame (A325-N endplate), composite office (§I3 shear studs), crane runway (App. 3 fatigue). Shop drawing PDF, connection report, BOM Excel, DSTV NC1, IFC 4.

See worked examples →
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NEW
Imperial · $120/hr default · shareable URL

US ROI Calculator

Enter project tonnage, connection count, and detailer rate. Get a live dollar savings estimate with a shareable link for your CFO or PM — email breakdown included.

Calculate your savings →

What's your time worth?

US structural engineers bill at $120–$180/hr. Manual AISC connection checks take 2–4 hours per joint. FrameAI runs the same check in under 60 seconds — and gives you a PDF you can stamp.

→ Calculate your firm's savings
$360
saved per connection check at $120/hr average.
One check pays for a year of Pro.
60s
end-to-end: PDF in → fabrication drawing out.
No manual section lookups, no spreadsheet juggling.
AISC
360-22, ASCE 7-22, and ACI 318-22 built in.
Not Eurocode — actual US code.

Worked Example — US Warehouse Portal Frame

A992 Gr. 50 wide flanges · A325-N bolts · E70XX fillet welds · ASCE 7-22 loads

Beam-to-column shear tab — A325-N ¾″ bolts
Bolt gradeA325-N (threads in shear)
Diameter¾″
Bolt area Ab0.4418 in²
Fnv (Table J3.2)54 ksi
φ (J3.6)0.75
φRn shear17.9 kips
Vd (factored)15.5 kips
✓ OK — Utilisation: 0.87
Column base plate — E70XX fillet weld, transverse
ElectrodeE70XX
Leg size a5/16″
Effective throat0.221″
Load angle θ90° (transverse)
Dir. factor1.500
φRn (§J2.4)6.95 kips/in
Weld length18.0 in
✓ OK — φRn total: 125.1 kips
Case Study · Dallas TX

180′×60′ Warehouse, 320-Ton Portal Frame

A325-N endplate moment · ASCE 7-22 · $16,740 saved · FrameAI: 4 min

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Case Study · Chicago IL

4-Story Composite Office, 480-Ton Package

§I3.2 composite beams · 192 shear studs · $6,528 saved · FrameAI: 8 min

View case study →

Compare to alternatives

Compare to RISA-3D → Compare to SAP2000 →

Run on a full connection model

The free calculators above handle single joints. For complete portal frames, moment connections, and fabrication packages — start free, no credit card.

Start free → See the demo first