FP-96 English Version - Eastern Federal Lands Highway Division

Section 555(2) Hot bending. If a radius shorter than the minimum specifiedfor cold bending is essential, hot bend the plates at a temperaturenot greater than 1,200 bF, except for grades 100 and 100W. Whengrades 100 and 100W steel plates are heated to temperatures greaterthan 1,125 bF, requench and temper according to the producingmill's standard practice.Table 555-3Minimum Bending RadiiPlate Thickness - (t)Inches@ 0.50Over 0.50 to 1.0Over 1.0 to 1.5Over 1.5 to 2.5Over 2.5 to 4(1) Bend radii for all grades of structural steel.BendingRadius (1)2(t)2.5(t)3(t)3.5(t)4(t)(c) Fit of stiffeners. Fabricate (mill, grind, or weld as shown on the plansor as specified) end bearing stiffeners for girders and stiffeners intended assupports for concentrated loads to provide full bearing on the flanges towhich they transmit load or from which they receive load. Fabricateintermediate stiffeners not intended to support concentrated loads to providea tight fit against the compression flange.(d) Abutting joints. Mill or saw cut abutting joints in compression membersof trusses and columns to give a square joint and uniform bearing. Themaximum allowed opening at other joints, not required to be faced, is 0.375inches.(e) Facing of bearing surfaces. Finish bearing and base plates and otherbearing surfaces that will come in contact with each other or with concreteto the ANSI surface roughness defined in ANSI B46.1, Surface Roughness,Waviness and Lay, Part I, as shown in Table 555-4.432