This is the first time i am writing in this forum, and this is the first time i am using CAESAR II...

I have 3 x 10" (2000m, 800 m & 200 m length)flowlines connected to 18" main header (900m length)and all above ground pipelines with 7 m span and ASTM 106 B material whrere as underground for road crossings with X65 material. Design temperatuer is 150 Deg. C & 45.16 Bar design pressure. i have run a model for each indivitual lines in CAESAR II. I have tried to join all the models but the file was very heavey to run. so i have run the model for each line and i have enter the displacement for the connected nodes to the main header. I have got a huge force in 18" header for the supports & Anchors. any body can help on how to reduce these loads.