structural
zero
lab
definitions
profile
FAQ / Getting Started
The Lab
Toy with interactive models to build real intuition.
Definitions
Structural engineering terms, defined in plain English.
↓
Section Property and Beam Forces Cheat Sheet
↓
quick reference
section properties
beam formulas
stress & capacity
Shape
Rectangle
Circle
Pipe / Round HSS
Hollow Rect (HSS)
I-Section
T-Section
Channel (C)
Angle (L)
dimensions
properties
Support
Simply Supported
Cantilever
Fixed-Fixed
Propped Cantilever
Uniform Load (w)
Point @ Midspan / Free End
Point @ distance a
diagram
calculate
E
ksi
I
in⁴
L
in
a
in
formulas
Bending
Shear
Combined (P + M)
section & loads
stresses
capacity check
Fy
ksi