FP-96 English Version - Eastern Federal Lands Highway Division

Section 555For other steels (except grade 36 steel) not shown in Table 555-1 or includedin AASHTO M 160, provide information on color code used.Mark for grade by steel die stamping, or by a substantial firmly attached tag,pieces of steel (other than grade 36 steel) that before assembling into memberswill be subject to fabricating operations (such as blast cleaning, galvanizing,heating for forming, or painting) which might obliterate paint colorcode marking. Where the steel stamping method is used, place the impressionson the thicker tension-joint member in transition joints.The maximum allowed depth of the impression is 0.010 inches. Use a toolthat will make character sizes with corresponding face radii as shown inTable 555-2. Avoid impressions near edges of tensile-stressed platemembers.Table 555-2Size of Steel Die Stamp MarkingsCharacter SizeInchMinimum FaceRadiiInch0.125 0.0070.1875 0.0030.250 0.010Use low-stress type steel die stamps. Do not use die stamps on fracturecriticalmembers.If requested, furnish an affidavit certifying that throughout the fabricationoperation, the identification of steel has been maintained.Heat curving of steel girders is not allowed.Do not drill, cut, or weld portions of structural members unless shown in theplans or approved in writing.429