CSiPlant offers a unique and powerful design request (DR) feature which can consider multiple different design parameters all in one run for side-by-side evaluation. Users could, for example, evaluate different tee/branch connection types for each different DR in the same run. To do this, users would first define 2 or more DRs (Design menu>Define Design requests), then select Tee/branch objects and Design menu>Assign Design properties>Tee object type to override tee type for that user specified DR. Each DR can have different design parameters, including different tee/branch types, which is a design parameterand design parameters extend to friction factor scale multipliers, flange loading check, and spring hanger sizing options.
Options to define 1 DR using Appendix D SIFs and flexibility factors, with another DR using B31J SIFs and flexibility factors for comparison. DRs enable design parameters to be applied to selected areas of the model using groups. For example, users could design part of their piping system to B31.1, another part of the piping network designed to B31.3, and another part designed to B31.8 with options in each DR to apply elbow pressure stiffening to selected areas of the model.
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There is no limit to the number of design requests which can be defined and evaluated. Some design parameter selections alter the stiffness matrix for analysis, which is handled automatically by the design request using its stage construction analysis capability.
It's a good idea to familiarize yourself with Design Preferences options. When you click on an individual field, a brief an explanatory Help explanation message appears below.
The Design Checks tab enables users to control how each design category is analyzed. For example, below Displacement cases are analyzed using "Stiffness Temperature Dependence", which means they are analyzed using the operating temperature modulus of elasticity. This is made possible by our Design Preferences dialogue option to "Consider Temperature Scaling" which scales stress results by Ec/Eh per 319.2.2(b)(4).
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