FP-96 English Version - Eastern Federal Lands Highway Division

Section 555(b) During this test, the maximum recorded tension must be equal toor greater than the turn test tension which is 1.15 times the requiredfastener tension indicated in Table 555-6.(c) The measured torque at a tension "P," after exceeding the turn testtension required above in (b), shall not exceed the value obtained bythe following equation:Torque0.25PDWhere:Torque = Measured torque in foot-poundsP = Measured bolt tension in poundsD = Nominal bolt diameter in feetFor rotational-capacity tests, use washers even though their use maynot be required in the actual installation.(2) Washers. Where the outer face of the bolted parts has a slope greater than 1:20 with respect to a plane normal to the bolt axis, use a hardenedbevelled washer to compensate for the lack of parallelism.Use hardened square or rectangular beveled washers for American StandardBeams and Channels conforming to AASHTO M 293.Where necessary, washers may be clipped on one side not closer than 7/8of the bolt diameter from the center of the washer.Hardened washers are not required for connections using AASHTOM 164 and AASHTO M 253 bolts except under the followingconditions.(a) Use hardened washers under the element turned in tightening whenthe tightening is done by the calibrated wrench method.444