Le jeudi 14 mars 2002, à 11:03 , Bowerbird@... a écrit : > heck, now _i'd_ like to know the theory behind it, > and i don't even know what optimum shearing is... and steel trusses! that must be one hell of a hernia! :-j ps. shearing is probably cutting. optimum shearing must be cutting into something to either minimise strokes, or maximise the use of the material. i've seen applications that do this for the clothes industry and allow the fabs to get the maximum garments from the minimum cloth with minimum work and loss. either that, or it's something to do with sheep.