Connection catalogue
The catalogue holds 26 connection models in 7 families. Each one declares how it behaves (simple, semi-rigid or rigid), which forces it transmits, how it is put together on site, and the limit states that usually govern it. The list below is read straight from the engine, so it is the same catalogue the editor offers at a node.
Three things describe a model
Stiffness
How much moment the joint carries before it rotates. Simple joints are meant to rotate; rigid ones are meant not to.
Forces transmitted
V is shear alone, V+N adds axial force, V+N+M adds bending. A model never carries what it does not declare.
How it is joined
Bolted, welded, or welded on one side and bolted on the other, which is the common shop and site split.
The 26 models, by family
The family is where the connection happens, and it is the first filter the editor applies. A beam-to-column model is never offered at a splice, and a base plate is never offered mid-span.
Beam to column14
Usually governed by: مجموعة البراغي (المركز اللحظي), الانقطاع بالقص, اللحام على المسند
Usually governed by: مجموعة البراغي, الانحناء الموضعي لجدار العمود
Usually governed by: براغي جدار العارضة, قص الكتلة, فعل العتلة (prying) في الزوايا
Usually governed by: سماكة اللوح (تُبقي المفصل), لحام العارضة باللوح
Usually governed by: الخضوع الموضعي للجدار (J10.2), التجعّد (J10.3), انحناء الزاوية
Usually governed by: T-stub الشفة, فعل العتلة (prying), منطقة البانل
Usually governed by: الخضوع الموضعي للجدار (J10.2), التجعّد (J10.3), انحناء المقعد
Usually governed by: T-stub, منطقة البانل في العمود, مقوّي الاستمرارية
Usually governed by: الشد في لوح الشفة, منطقة البانل
Usually governed by: مجموعة لحام لامركزية, منطقة البانل
Usually governed by: تجعّد جدار العارضة تحت القوة المركزة, انحناء اللوح, اللحام عند قمة العمود
Usually governed by: انحناء المقوّي بين شفتي العمود, الشد في البرغي بازدواج العزم, انحناء اللوح تحت البرغي, لحام المحيط تحت N وM
Usually governed by: مقطع متغير, الانبعاج الجانبي الالتوائي لقطعة الكتف
Usually governed by: مقطع متغير, الانبعاج الجانبي الالتوائي لقطعة الكتف
Beam to beam4
Usually governed by: الانحناء عند الحزّ, قص الكتلة عند الحزّ, مجموعة البراغي
Usually governed by: الانحناء عند الحزّ, فعل العتلة (prying), قص الكتلة
Usually governed by: التحمّل في الجدار المثني, تمزّق الجدار المثني, انحناء الساق
Usually governed by: الشد في لوح الشفة, عارضة بثقوب في الشفة (F13.1), الانحناء والانبعاج في الحزّ المزدوج, القص المزدوج لبراغي الجدار
Splices3
Usually governed by: مجموعة براغي لامركزية, قص الكتلة في ألواح الوصل
Usually governed by: ألواح وصل الشفة بالشد, المساحة الصافية, الانزلاق
Usually governed by: لوح نهاية مائل, T-stub
Column bases2
Usually governed by: تحمّل الخرسانة, انحناء اللوح, التثبيت في الخرسانة
Usually governed by: كتلة الضغط, الشد في المرساة, انحناء اللوح
Truss joints2
Usually governed by: مقطع ويتمور, انبعاج لوح الـ gusset, تخلّف القص (shear lag)
Usually governed by: خط اللحام في القطري, مقطع ويتمور, قص الكتلة
Bracing1
Usually governed by: طريقة القوة المنتظمة (UFM), ويتمور, تماس الـ gusset مع العارضة
Tubular (HSS)1
Usually governed by: تلدّن وجه الوتر (الفصل K), الاختراق
What each engine was checked against
Every engine declares the published example it was reproduced against, and an automated test opens the stored reference and fails if the citation is not there. A declaration without a reference does not ship. The sources in use today:
- AISC Design Examples V14.1, for single plates, double angles, header plates, seated angles, flange plates and web splices.
- AISC Design Guide 1, for base plates under uniform bearing pressure.
- AISC Design Guide 4, for extended end plates, and by extension for apex and haunched joints.
- AISC Design Guide 16, for flush end plates.
- AISC 360 chapters J and K, for welds, gussets, block shear and HSS face plastification.
- AISI S100-16 with S3-22, chapter J, for the purlin cleat on cold-formed webs.
Where no solved example exists in the public literature, the engine says so in its own readiness note rather than implying an example nobody opened. Gussets, welded truss gussets and the tubular T/Y joint are in that group: the formulas are the code equations, but the numbers were never matched against a published worked example.
A model appearing in this catalogue does not mean it will be offered at every node. See how the editor filters the catalogue for one node.