Rafters and Compression Ring API 650 Tanks
Rafters and Compression Ring API 650 Tanks
(OP)
Thanks for helping
1. When to consider Rafter Column support as per API 650 Std.
2. How to Evaluate compression Ring Dia. and how much rafter it can support.
1. When to consider Rafter Column support as per API 650 Std.
2. How to Evaluate compression Ring Dia. and how much rafter it can support.
RE: Rafters and Compression Ring API 650 Tanks
The answer to your second question seems to be "hire a competent structureal engineer".
Note that none of the typical API fixed roof designs impose radial loads on the tank shell or a plate/ring in the tank center and therefore tension in the shell or compression on a member in the tank center is not typically needed. If your design does create compression in the rafters, you'll need an engineer familiar with those types of structures.