Sample interview questions: Can you explain the process of sizing gas lines based on BTU requirements?
Sample answer:
Sizing Gas Lines Based on BTU Requirements
- Determine the total BTU requirement of all gas appliances: Calculate the combined heating capacity of all appliances, including furnaces, water heaters, range tops, and dryers.
- Convert BTU to cubic feet per hour (CFH): Divide the total BTU requirement by 1,000. CFH represents the volume of natural gas consumed per hour.
- Select pipe size from table: Refer to gas line sizing charts that correlate CFH to acceptable pipe diameters. Factors such as gas pressure, appliance type, and pipe length are considered in these charts.
- Check local building codes: Ensure compliance with local regulations regarding gas line sizing and installation.
- Consider future expansion: If additional gas-burning appliances are anticipated in the future, select a … Read full answer
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