Pickup Stack Height Above Roof

Standard z9 5 recommends a minimum stack height of 10 ft above the adjacent roof line an exhaust velocity v e of 3000 fpm and a stack height extending one stack diameter above any architectural screen.

Pickup stack height above roof.

Provide a stack velocity of a minimum of 1 4 times the wind velocity. This is for masonry chimneys. Plumbing books vary in their advice. It s 6 inches in many states but especially in northern states like minnesota it s 12 inches.

For a gas vent or type l vent this height must be 2 ft 0 61m or more. If the pipe is farther than 10 feet from the roof. Place stack downwind of air intakes. We suggest using a roof brace kit or a field fabricated assembly using a support bracket assembly as shown in figure 15.

Place the stack at least 10 ft high on most roofs to avoid recirculation. Some builders recommend a minimum of 30 cm 12 inches. A vertical line drawn along the up roof side of the chimney from the roof surface to the top of the chimney flue opening shall be at least 3 ft in height. Where a structure has an earth covered roof extending from surrounding grade the vent extension shall run at least 7 feet above grade and terminate with an approved vent cap.

If the chimney extends more than 5 feet above the roof it will require additional bracing. Additionally per our rule we need to add 2 feet or 24 inches giving us a total height of 64 inches. The top of the flue opening should be 3 ft 0 92 m above any roof surface. Ipc 904 1 does not give a minimum height for stack vent termination above a roof it just says at least number inches mm the minimum termination height for a plumbing stack vent varies by state.

So take the top number of your roof pitch and multiply it by 10 then add 24 note example 1. To determine the length of brace measure from support bracket assembly to point on roof where brace will be anchored. At least 5 feet from or 2 inches above parapet walls. Place the stack as far from the intake as possible 50 ft is recommended.

Make sure the stack to protrude a minimum of 15 cm 6 inches from the roof. All open vent pipes that extend through a roof shall be terminated at least 6 inches 152 mm above the roof and not less than 2 inches 51 mm above the invert of the emergency overflow except that where a roof is to be used for any purpose other than weather protection the vent extensions shall be run at least 7 feet 2134 mm above the roof. 2010 florida building code plumbing 904 1 roof extension. National fire protection association nfpa standard 45 specifies a minimum stack height of 10 ft to protect rooftop work ers.