• ### Chapter 5: Chimneys and Vents NYC Fuel Gas Code 2014 ...

Gas vents that are over 12 inches (305 mm) in size or are located less than 8 feet (2438 mm) from a vertical wall or similar obstruction shall terminate not less than 2 feet (610 mm) above the highest point where they pass through the roof and not less than 2 feet (610 mm) above any portion of a building within 10 feet (3048 mm) horizontally.

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• ### Chapter 5: Chimneys and Vents NYC Fuel Gas Code 2014 ...

Gas vents that are over 12 inches (305 mm) in size or are located less than 8 feet (2438 mm) from a vertical wall or similar obstruction shall terminate not less than 2 feet (610 mm) above the highest point where they pass through the roof and not less than 2 feet (610 mm) above any portion of a building within 10 feet (3048 mm) horizontally.

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• ### Flue Gas Steel Stack Design Calculations Learn Chimney ...

Oct 24 2009 · Diameter (D) = [(4*Y)/ (3.142*Z)]­­0.5 .Eqn.1.2. Conclusion. The design of the steel stack or chimney is important from the diesel genset performance as well as air pollution point of view. While doing the flue gas steel stack design calculations you should consider the design formulas and local pollution control norms.

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• ### chimney height calculation for solid fuel boiler

The pressure difference in the chimney pulls air and fuel gas from the boiler or fireplace through the chimney and out of the building. Chimney Draft. The pressure difference or chimney draft can be expressed as: dp ch = h ( o- i) a g (1) where. dp ch = pressure draft in the chimney (Pa) h = height of chimney

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