Parametric figures.

The drawing is bound to the variables. Change the span and the beam, its dimension line and the moment all redraw together.

Sheaf MER-2418-BM04 · Meridian Engineering RT
L≔ {{ lCtl }} m
w≔12.0kN/m
w = 12.0 kN/m
L = {{ lFig }} m
Figure 3.1 — Beam BM-04, elevation. Bound to L, w.
M≔ w·L2 8 = {{ mVal }} kN·m
L w