Main girder template (bottom area +2* side area): (2.4*3- wall thickness) * (0.25+ (0.4-0.12) *2) *2--0.25*0.4*2*4 secondary beam area
Plate template (bottom area): (2.6*3- wall thickness) * (2.4*3- wall thickness) - (2.4*3- wall thickness) *0.2*2 [main beam] - (2.6*3- wall thickness) *0.25*2 [sub beam]
The second beam template (bottom area +2* side area): (2.6*3- wall thickness) * (0.2+ (0.4-0.12) *2) *2-0.2*0.25*4 [the main beam and the secondary beam transfer area] -0.2*0.4*2*4 [the main beam and secondary beam transfer area]
