Square Lattice Tower Section

Create a 3D model of one section of a square, four-leg steel lattice tower. Overall layout - Four vertical legs at the corners of a square of side L = [CHOOSE, mm]. - The section is [CHOOSE: 4] bays tall. Each bay is a square of side L, so the section height is [number of bays] x L. - Horizontal members join adjacent legs at the top and bottom of every bay, on all four faces. Member sections - Legs: equal angle 50 x 50 x 5 mm. - Horizontal members: equal angle 30 x 30 x 5 mm. - Diagonal members: flat bar 30 x 8 mm. Bracing pattern (identical on all four faces) Define S = L / (2 + sqrt(2)) = 0.2929 x L. Bays alternate between type A and type B going up the tower, starting with type A at the bottom. Use local coordinates for each bay face with (0,0) at the bottom-left corner and (L,L) at the top-right corner. Type A bay (closed cell): four straight diagonal bars 1. from (S, 0) to (L, L - S) 2. from (0, S) to (L - S, L) 3. from (L - S, 0) to (0, L - S) 4. from (L, S) to (S, L) Type B bay (open cell): four short corner bars 1. from (S, 0) to (0, S) 2. from (L - S, 0) to (L, S) 3. from (0, L - S) to (S, L) 4. from (L, L - S) to (L - S, L) The bars must line up across bay boundaries so that each diagonal runs continuously through neighbouring bays. No diagonal passes through a corner node. Do not add any other bracing. Output a single solid assembly with all members joined, units in mm.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.