Pickup Stack Height Above Roof

Place the stack at least 10 ft high on most roofs to avoid recirculation.

Pickup stack height above roof.

If the pipe is farther than 10 feet from the roof. We suggest using a roof brace kit or a field fabricated assembly using a support bracket assembly as shown in figure 15. Provide ample stack height a minimum of 10 ft above adjacent rooflines or air intakes. So take the top number of your roof pitch and multiply it by 10 then add 24 note example 1.

Place stack downwind of air intakes. Place the stack as far from the intake as possible 50 ft is recommended. Sps 382 31 16 d 3. 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.

This is for masonry chimneys. If the chimney extends more than 5 feet above the roof it will require additional bracing. National fire protection association nfpa standard 45 specifies a minimum stack height of 10 ft to protect rooftop work ers. The top of the flue opening should be 3 ft 0 92 m above any roof surface.

To determine the length of brace measure from support bracket assembly to point on roof where brace will be anchored. It s 6 inches in many states but especially in northern states like minnesota it s 12 inches. Make sure the stack to protrude a minimum of 15 cm 6 inches from the 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.

The top of a chimney pipe must extend at least 2 feet above the peak of the roof if the pipe is within 10 feet of the peak. Some builders recommend a minimum of 30 cm 12 inches. 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. 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.

At least 5 feet from or 2 inches above parapet walls. Provide a stack velocity of a minimum of 1 4 times the wind velocity. Additionally per our rule we need to add 2 feet or 24 inches giving us a total height of 64 inches. Plumbing books vary in their advice.