Permits & Development - Encroachment(EP)/Driveway(DW) Permits - 2007_EP-07-301 thru EP-07-400_ - EP-07-352

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Table F Nut Rotation Required for Turn-of-Nut a, Installation( b) Bolt Length(measured Required Rotation(turn) instep 1 4 bolt diameters or less 1/3 (a) Nut rotation is relative to bolt,regardless of the element(nut or bolt)being turned. For bolts installed by 1/2 turn and less,the tolerance shall be plus or minus 30 degrees. (b) Applicable only to connections in which all material within grip of the bolt is steel. 7. Tighten the nut further to the 2/3-turn mark as indicated in Table G. The rotation is measured from the heavy reference start line made on the plate or girder when the bolt was snug-right. Verify that the radial line on the bolt end or on the exposed portions of the threads of tension control bolts is still in alignment with the start line. Table G Required Nut Rotation for Rotational Ca aci Test Bolt Length(measured Required Rotation(turn) in St 1 4 bolt diameters or less 2/3 8. Loosen and remove the nut and examine the threads on both the nut and bolt. C. Short Bolt Acceptance Criteria: 1. An assembly shall pass the following requirements to be acceptable: 1) the measured moving torque from Step 6 shall be less than or equal to the maximum allowable torque from Table E,2)the nut shall be able to be removed from the bolt without signs of thread stripping or galling after the required rotation in Step 7 has been achieved, 3) the bolt does not shear from torsion or fail during the test, and 4) the assembly shall not seize before the final rotation in Step 7 is reached. Elongation of the bolt in the threaded region between the bearing face of the nut and the underside of the bolt head will not be considered a failure. Both fastener assemblies tested from one rotational capacity lot shall pass for the rotational capacity lot to be acceptable. INSTALLATION TENSION TESTING AND ROTATIONAL CAPACITY TESTING AFTER ARRIVAL ON THE JOB SITE Installation tension tests and rotational capacity tests on high-strength fastener assemblies shall be performed by the Contractor prior to acceptance or installation and after arrival of the fastener assemblies on the project site. Installation tension tests and rotational capacity tests shall be performed at the job-site,in the presence of the Engineer,on each rotational capacity lot of fastener assemblies. The requirements of this section do not apply to high-strength cap screws or high-strength bolts used for slip base plates. Installation tension tests shall be performed on 3 representative fastener assemblies in conformance with the provisions in Section 8, "Installation," of the RCSC Specification. For short bolts, Section 8.2, "Pretensioned Joints," of the RCSC Specification shall be replaced by the"Pre-Installation Testing Procedures," of the "Structural Bolting Handbook,"published by the Steel Structures Technology Center,Incorporated. The rotational capacity tests shall be performed in conformance with the requirements for rotational capacity tests in "Rotational Capacity Testing Prior to Shipment to Job Site"of these special provisions. At the Contractor's expense, additional installation tension tests, tests required to determine job inspecting torque, and rotational capacity tests shall be performed by the Contractor on each rotational capacity lot,in the presence of the Engineer, if 1) any fastener is not used within 3 months after arrival on the jobsite, 2) fasteners are improperly handled, stored, or subjected to inclement weather prior to final tightening, 3) significant changes are noted in original surface condition of threads, washers, or nut lubricant, or 4) the Contractor's required inspection is not performed within 48 hours after all fasteners in a joint have been tensioned. Failure of a job-site installation tension test or a rotational capacity test will be cause for rejection of unused fasteners that are part of the rotational capacity lot. Contract No. 10-OM7104 172