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 Design requests (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 Design request. Each design request can have different design parameters, including different tee/branch types, which is a design parameter.
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.
Since exact friction values are not always known, and may change over time, each DR has the option to apply a friction scale multiplier (default 1.0) to supports with friction applied. This enables users to analyze and design for multiple different friction coefficient scenarios all in the same run.
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.
Use Design menu>Assign Design properties to assign different tee/branch connection types to selected tees associated with a DR as shown below. Assign Design properties can also be used to assign elbow flanges for SIF and flexibility factor calculations, elbow thickness, cone angle for reducers, point type for SIFs such as Fillet/Socket weld, Lap joint, etc. and other design parameters.
