Hello,

I hope everyone is doing fine. I have a question concerning the support loads on the vertical riser clamps. I have an 1800 mm GRP pipe with a vertical run of about 25 m, and is supported at three locations with riser clamps. I have sized the clamps so that each one carries the weight of the piping above it till the next clamp. However, in the restraint load summary I found that the lowest clamp carries all the load, while the above two clamps have zero loads. Is that what would happen actually in operation that all the load would be carried by the lowest clamp? Are there any changes to be made to the model to distribute the loads on the three clamps?

I attached the model for your kind review. The riser clamps are modeled as +y restraints at the nodes 1140, 1145, and 1150. Thanks a lot in advance.