Click Add to add conditions. You can add more than one condition.

Attribute—Select the Attribute that you want to use to determine which pipes to skeletonize. These include:

• Bulk Reaction Rate
• Diameter
• Has Check Valve
• Installation Year
• Length
• Material
• Minor Loss Coefficient
• Roughness
• Wall Reaction Rate.

Operator—Select an operator that defines the relationship between the attribute you select and the value you select for that attribute. For example, if you select an attribute of Diameter, an operator of Less Than, and a value of 6 in., then any pipes with less than a 6-in. diameter are valid for skeletonization. Depending on operation type, Tolerance may also be an option for operator. When using a tolerance, a tolerance (as opposed to a condition) is defined. For example, in the context of Series Pipe Merging where two pipes are being merged, a tolerance of 2-in. diameter means that those pipes will only be merged if their diameters are within 2-in. of each other.

Value—The label, units, and appropriate value range depend on the attribute you select.