Posted by: j_mendez
API -650 Edition 11, Addenda 3, bolts Calculation - 10/14/11 06:46 AM
Dear Colleagues,
As you have seen, the last addenda of the API -650, third addenda, has changed the procedure to calculate the bolt size.
In the previous edition, the table 5-21b defined for seismic load, and for design pressure + seismic the slab moment for the bolt design (Ms).
In the last edition they changed the Ms for Mrw (ring wall moment).
Can someone explaining it to me? why do they change something that has been for several years.
As you have seen, the last addenda of the API -650, third addenda, has changed the procedure to calculate the bolt size.
In the previous edition, the table 5-21b defined for seismic load, and for design pressure + seismic the slab moment for the bolt design (Ms).
In the last edition they changed the Ms for Mrw (ring wall moment).
Can someone explaining it to me? why do they change something that has been for several years.