Structure Sketch

This release is the table workspace: the model is built and edited entirely in tables. There is no drawing surface.

Keyboard

Tab / Shift+Tab: Move through every field, control and row action in order.
Alt + ↑ / ↓: Move between rows of the same column. Plain arrows are left alone because a number field increments with them and a select changes value.
Add / Delete: Adding a row moves focus into it; deleting a row moves focus to the row that replaced it, or to the table's Add control when the table is empty.
Run analysis: A control like any other. The solver runs when you press it, never while you type, so the results on this page always describe a model that was actually analysed.

No validation errors. Stage 1 checks geometry, references and quantities — a mechanism is only found in the solve, so Run can still refuse.

Nodes

Nodes on the beam line, with their position along it. One row per node.
ID	x (m)	Row actions
n1
n2

Members

Every adjacent pair of nodes is already spanned. Add a node to extend the beam line.

Members of the beam line, each between two nodes, with its section stiffness given as E and I or as EI directly.
ID	Start	End	Stiffness	Value	Row actions
m1				GPa cm⁴

Supports

Every node already has a support. A node carries one support condition.

Supports, one per row, each attached to a node and restraining it as free, simple or fixed.
ID	Node	Restraint	Row actions
s1
s2

Loads

Applied loads, one per row. Forces are positive downward and moments positive clockwise.
ID	Kind	Applied to	Magnitude	Position (m)	Row actions
q1			kN/m	—

Results

No analysis yet. Build the model, then press Run to solve it — the solver runs when you ask it to, so nothing on this page is ever a guess about a model you are still editing.

Bending moment: sagging positive, hogging negative
Shear: positive where the resultant of the forces to the left acts upward
Deflection: positive downward
Vertical reaction: positive upward
Applied loads: force positive downward, moment positive clockwise