WebApply the torque evenly to each stud following the stud bolt tightening sequence. The final torque must be within ±5% of the required values per Section 7 above. 8. Stud Bolt Additional Tightening Procedure where Leaks Occur During Pressure Testing Step 1 Depressurize the piping system and re-torque stud bolts to maximum torque value … Web13. METHOD OF TIGHTENING OF BOLTS The following procedure shall be used for each successive step when wrench tightening bolts: The bolts shall be torque tightened to the initial wrench torque value that applies 50% of the required bolt stress (see 15 below), either simultaneously in pairs by T-4.250.897 Rev-G Page 11 of 18 Q A T A R Doc. Title:
6.6 Methods for Pretensioning Connections - AISC
WebFor one example, the bolt itself is tested for strength by the manufacturer by screwing the bolt into a standard testing fixture and subjecting it to pure tension. However, in typical … WebBolt Tightening Summarizes different tightening methods, and explains the relationship between bolts and torque, torque coefficient, how to determine tightening torque, tightening torque tolerance, and axial tension stability (tightening procedure). 3. Inspecting Tightening Torque cheshire therapy
6.5. Bolt Installation American Institute of Steel …
WebFor flanges with 12 or more bolts: 1 st round – 20 percent of final torque. 2 nd round – 40 percent of final torque. 3 rd round – 80 percent of final torque. 4 th round – 100 percent of final torque. Final round – clockwise or counter-clockwise around the flange. PLEASE TAKE NOTE: The above bolt tightening sequences are “the most ... WebTightening for loose material after installation may use Electric Impact Wrench. Marked the bolt as applicable. 8.4.5 Lifting of painted structural shall be done with non-abrasive choker. 8.4.6 The crane responsible for loading or unloading structural members shall beassigned separately prior for erection works. WebJul 1, 2001 · 1.First snug tighten all bolts: When the turn-of-nut method is used, each bolt in a joint must be first brought to a snug-tight condition. At this point, all joint plies should … cheshire therapy centre