Please could anyone comment.
Assuming that a vertical pressure vessel on a skirt on its own foundations is classified as a “non-building structure” covered by 1622, where in IBC 2000 does the over strength factor Omega_O apply ? NEHRP 2000 Paragraph 14.7.3.3.a makes quite clear and logical...
Please could I ask for an opinion.
IBC 2000 1602 Defines an EBF as
"A diagonally braced frame in which at least one end of each brace frames into a beam a short distance from a beam-column or from another diagonal brace".
If a brace was eccentric at both ends, would it still be...
The facility to model steel is nearly as important as the pipe stress for any serious work, esp seismic, on large pipe (of comparable section modulus to the supporting steel). The alternative is to assume all structure is rigid and dream.
Assuming that every support is rigid can and does...
Steve1 brings up a good point. The ASME codes limit the stress to the elastic range for pipework.
However, buildings and structures are typically designed with a response reduction factor Rw of some value greater than 1. ie. The structure is designed to absorb energy by plastic deformation...
Anyone blindly applying rules of thumb, especially ultra conservative values with flow velocities down to 4 fps for clean water, deserves to be shot. Line sizes should be what is required for reasonable pressure drop, reasonable fabrication costs AND to meet pump nozzle load requirements...
