1) Draw in grids as shown plus on plan for outside of stringers.
2) Set x.y.z to their standard direction. Pick FLT10*200 set ends offset to -200 100 and right, front, front,
On elevation draw in flat from point A to B. Move stringer up by 12 mm
3) Check position in plan. I like to put the stringers on the inside of the grid lines.
4) Trim top of stringer back 10 mm with vertical cut line.
5) Apply con 103 fin plate to top. Remember you have to play about to get it flush
with top of pfc. Put fin plate to inside of stringer. Line cut stringer flush with top of pfc.
6) Cut 2 planes with line cut at base. Insert flat bar column. Do a con.1042 to put base on flat column.
Explode base con. Remove column and weld plate to stringer. No need to do this Tekla have just advised
that con 1038 will do this ie put a base plate on stringer.
7) Mirror stringer with base plate to other grid line. One can now draw in the treads.
8) Next I intend to draw in one 65×6 flat bar end, cut chamfer & bolt group to stringer.
9) draw in front 30×5 nosing. Call this the main part by welding 65×6 end plate to it.
10) Make this into Custom Component – Detail so I can use on any job. Export to firm folder.
11) I’ll explode then mirror 65×6 to other stringer. Adjust length of nosing flat and copy backwards.
12) The nosing flat wouldn’t attach to custom component. As the size and length changes it can be put
in for each job. uel no. is g3.uel and it’s in my firm folder after I exported it. After you click export
it goes to the current model folder and one has type in g3.

The above sketch is taken from drawing ACW_01 Vietnam job. Treads are 275 mm wide 30×5 flat pitched at 33.75 mm.