I have a skid with an I beam and 1/4" checker plate on top.
Would you take the 0 elevation as the top of the I beam or top of checkerplate? I prefer top of checkerplate but others say top of beam is industry standard, is that true?
Anyone know what type "H" and type "S" flanges are? I found them on an old hand drawing of a PV. I haven't had any luck searching online. is it old school terminology?