I used 200 psi for "y". However, I think my confusion is which load to use to calculate the bolt torque. In Appendix 2, one calculates a required bolt load in 2.5(c) and then a bolt load for flange design in 2.5(e). The bolt load in 2.5(e) is significantly higher than in 2.5(c)...
Thanks for the reply. The required torque for the bolts based on 380,000 lb. would then be ~226 ft-lb. Seems reasonable for 1-1/4" bolts but our customer kind of gasped at it. They use the "tighten it until it stops leaking method" and I am sure that is not 226 ft-lb! But I...
Why is it that when I calculate bolt loads for seating and operating conditions, my seating bolt load comes out significantly higher than my operating condition? Is this the load I would use to specify installation torque? Seems awfully high. For instance, a 30" R.F. manway cover with...
