Gastite offers a computerized sizing tool designed to reduce the time required to lay out gas piping systems by as much as 70% to 90%. The new, proprietary sizing utility is an add-on for AutoCAD software. A user must be familiar with the summation method of sizing and standard AutoCAD techniques. The utility is intended specifically for all currently available sizes of Gastite flexible gas piping, from 3/8-inch to 2 inches. It will also calculate pressure drops for rigid pipe and for underground polyethylene piping. However, the sizing utility will not provide accurate results for non-Gastite brands of corrugated stainless steel tubing (CSST). The sizing utility will handle a variety of designs, including single or multiple meters, two-dimensional or three-dimensional layouts, unregulated single-pressure systems or regulated, dual-pressure systems. Gastite.