
At the moment the following joint types are available:
- Beam-Beam (B).
- Hinged Beam-Column (c o X).
- Moment Beam-Column (C).
- Horizontal Bracing (H).
- Vertical Bracing (V).
- Post-Beam (p or Y or P).
- Splice (S).
- Knees (K)
- Steps (s)
The joints are coded by marks, that follow the rules here summarized.
The mark is always composed by three alphanumerical characters.
The first character refers to the typology of the jopint: beam-beam, beam-column, et cetera.
The second character refers to the connection system used (fin-plate, end-plate, angles, welds, et cetera).
The third character of the mark is used to distinguish marks otherwise equal.
The following tables list the letters used for the first two characters.
First Character of the Mark | Meaning |
S | Splices |
B | Beam-Beam joints |
c | Hinged Beam-Column joints |
X | Extended Beam-Column joints, to make room for a vertical bracing |
C | Moment Beam-Column joints |
p | Hinged Post-Beam joints |
Y | Extended Post-Beam joints, to make room for a vertical bracing |
P | Moment Post-Beam joints |
H | Horizontal bracings |
V | Vertical bracings |
g | Hinged ground joints (base column) |
G | Moment ground joints (base column) |
w | Hinged Beam-Wall joints |
W | Moment Beam-Wall joints |
r | Hinged Beam-Reinforced Concrete Column (with rectangular or square cross-section) |
R | Moment Beam-Reinforced Concrete Column (with rectangular or square cross-section) |
A | Vertical bracing to Reinforced Concrete Column (with rectangular or square cross-section) |
s | Steps for stairs, to string |
K | Knee |
Second character of the mark | Meaning |
f | Fin plate unstiffened |
F | Fin plate stiffened |
e | End plate direct, not stiffened |
E | End plate stiffened |
g | Gusset plate not stiffened |
G | Gusset plate stiffened |
W | Welded |
s | Seated without fin plate |
S | Seated with fin plate |
h | Bolted plates but no backing plates |
H | Bolted plates and backing plates |
For instance, the following marks have the following meanings:
- CE1: moment beam-column a momento with stiffened end-plate (first type)
- Vh2: vertical bracing with bolted joint using web and flange plates, but no backing plates (second type)
- GE1: moment ground base joint with stiffened end plate.
The following table summarizes the marks of the joint-types currently available. See also the cross-section codes page.
Mark | To Flange (F) or Web (W) | Master | Slave | Standard | Angle |
Beam-beam | |||||
BF1 | – | Hsm | Hsm, Usm | EC3-NTC-AISC LRFD | 90° |
BF2 | – | Hsm | Hsm,Usm | EC3-NTC-AISC LRFD | 90° |
BE1 | – | Hsm | Hsm,Usm | EC3-NTC-AISC LRFD | 90° |
BE2 | – | Hsm | Hsm, Usm | EC3-NTC-AISC LRFD | 90° |
BE3 | – | Hsm | Hsm, Usm | EC3-NTC-AISC LRFD | non 90° |
BE4 | – | Hsm | Hsm, Usm | EC3-NTC-AISC LRFD | non 90° |
BF3 | – | Hsm | Hsm, Usm | EC3-NTC-AISC LRFD | 90° |
BF4 | – | Hsm | Hsm, Usm | EC3-NTC-AISC LRFD | 90° |
wf1 | – | Hsm | EC3-NTC-AISC LRFD | 90° | |
wW1 | – | Hsm, Usm | EC3-NTC-AISC LRFD | 90° | |
Bf1 | – | Asb, Hsm, Hsh, Osh, Rhs | Asb, Hsm, Hsh, Pfc, Thsm, Tsh, Ush, Usm | EC3-NTC | 90° |
Beam-column | |||||
cf1 | W | Chs, Hsm, Hsh, Osh, Rhs | Asb, Hsm, Hsh, Osh, Rhs | EC3-NTC | 90° |
cf2 | F | Chs, Hsm, Hsh, Osh, Rhs | Asb, Hsm, Hsh, Osh, Rhs | EC3-NTC | 90° |
cF1 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
cf3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
cF2 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
cF3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
ce1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
cW1 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
Extended beam-column | |||||
XF1 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
XF2 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
XF3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
XE1 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
XE2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
Beam concrete column | |||||
rf1 | W | Psh | Hsm | EC3-NTC-AISC LRFD | 90° |
rf2 | F | Psh | Hsm | EC3-NTC-AISC LRFD | 90° |
rW1 | W | Psh | Hsm | EC3-NTC-AISC LRFD | 90° |
rW2 | F | Psh | Hsm | EC3-NTC-AISC LRFD | 90° |
rW3 | W | Psh | Usm | EC3-NTC-AISC LRFD | 90° |
rW4 | F | Psh | Usm | EC3-NTC-AISC LRFD | 90° |
Splices | |||||
Sh1 | – | Hsm, Hsh | Hsm, Hsh | EC3-NTC-AISC LRFD | 0° |
Sh2 | – | Hsm, Hsh | Hsm, Hsh | EC3-NTC-AISC LRFD | 0° |
SH1 | – | Hsm, Hsh | Hsm*, Hsh | EC3-NTC-AISC LRFD | 0° |
Vertical bracings | |||||
VG1 | W | Hsm, Hsh^ | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm * ][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
Vh1 | W | Hsm, Hsh^ | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm* ][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
VW1 | W | Hsm, Hsh^ | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm* ][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
VG2 | F | Hsm, Hsh^ | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm *][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
Vh2 | F | Hsm, Hsh^ | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm *][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
VW2 | F | Hsm, Hsh^ | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm *][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
AG1 | W | Psh | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm *][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
AG2 | F | Psh | Hsm, Lsm, Usm, 2Lsm* _||_, 2Usm *][, Pfc | EC3-NTC-AISC LRFD | 0°<a<90° |
Horizontal bracings | |||||
HG1 | – | Hsm, Hsh^ | Hsm, Lsm, Usm | EC3-NTC-AISC LRFD | 0°<a<90° |
HG2 | – | Hsm, Hsh^ | Hsm, Lsm, Usm | EC3-NTC-AISC LRFD | 0°<a<90° |
Moment beam-column | |||||
Ce1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CW1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CE1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CE2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CE3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CE4 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CW2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
CW3 | W | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
Post to Beam | |||||
pe1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
pe2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
pE1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
pe3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
pW1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
pW2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
Post to beam extended | |||||
YE1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
YE2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
Moment post to beam | |||||
Pe1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PW1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PE1 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PE2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PE3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PE4 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PW2 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
PW3 | F | Hsm | Hsm | EC3-NTC-AISC LRFD | 90° |
Steps to String | |||||
sW1 | W | Usm, Pfc | Upn | EC3-NTC-AISC LRFD | 90° |
sW2 | W | Usm, Pfc | Hsm, Hsh | EC3-NTC-AISC LRFD | 90° |
sW3 | W | Usm, Pfc | Thsm | EC3-NTC-AISC LRFD | 90° |
sW4 | W | Usm, Pfc | Usm | EC3-NTC-AISC LRFD | 90° |
sW5 | W | Usm, Pfc | Pfc | EC3-NTC-AISC LRFD | 90° |
sW6 | W | Hsm, Hsh | Usm | EC3-NTC-AISC LRFD | 90° |
sW7 | W | Hsm, Hsh | Hsm, Hsh | EC3-NTC-AISC LRFD | 90° |
sW8 | W | Hsm, Hsh | Thsm | EC3-NTC-AISC LRFD | 90° |
sW9 | W | Hsm, Hsh | Upn | EC3-NTC-AISC LRFD | 90° |
sWa | W | Hsm, Hsh | Pfc | EC3-NTC-AISC LRFD | 90° |
Knees | |||||
KW1 | W | Usm,Hsm, Hsh,Pfc, Rhs,Chs, Thsm,Ush, Tsh,Osh, Asb | Usm,Hsm, Hsh,Pfc, Rhs,Chs, Thsm,Ush, Tsh,Osh, Asb | EC3-NTC-AISC LRFD | 0°<a<90° |