# Design Formula for Steel Pipe

- **operation:** document
- **citation:** 192.105
- **title:** Design Formula for Steel Pipe
- **source type:** regulation
- **agency:** Arkansas Public Service Commission
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** Not available
- **summary:** § 192.105 Design Formula for Steel Pipe (a) The design pressure for steel pipe is determined in accordance with the following formula: P = Design pressure in pounds per square inch (kPa) gage. S = Yield strength in pounds per square inch (kPa) determined in accordance with § 192.107. D = Nominal out
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- **markdown:** https://regulus.evalyn.ai/document/ar-car-23-500-192-105.md
- **app url:** https://regulus.evalyn.ai/document/ar-car-23-500-192-105
- **source url:** https://codeofarrules.arkansas.gov/Rules/Rule?chapterID=40&levelType=part&partID=1394&subChapterID=392&titleID=23
**body:**

§ 192.105 Design Formula for Steel Pipe (a) The design pressure for steel pipe is determined in accordance with the following formula: P = Design pressure in pounds per square inch (kPa) gage. S = Yield strength in pounds per square inch (kPa) determined in accordance with § 192.107. D = Nominal outside diameter of the pipe in inches (millimeters). T = Nominal wall thickness of the pipe in inches (millimeters). If this is unknown, it is determined in accordance with § 192.109. Additional wall thickness required for concurrent external loads in accordance with § 192.103 may not be included in computing design pressure. F = Design factor determined in accordance with § 192.111. E = Longitudinal joint factor determined in accordance with § 192.113. T = Temperature derating factor determined in accordance with § 192.115. (b) If steel pipe that has been subjected to cold expansion to meet the SMYS is subsequently heated, other than by welding or stress relieving as a part of welding, the design pressure is limited to 75 percent of the pressure determined under paragraph (a) of this section if the temperature of the pipe exceeds 900°F (482°C) at any time or is held above 600°F (316°C) for more than 1 hour.
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