Support for B-vent in masonry chimney

[ziphius]

I'm working on new venting for a gas furnace and hot water heater through an existing unlined masonry chimney. Appliances are in the basement of a two story home, so probably about 30 feet total. In considering B-vent, any ideas how I could support the vent within the chimney? Would support at the base where it enters the basement and the top where it daylights be sufficient?

Thanks!

[Kathy]

TAKE A LOOK AT THESE:

[DT]

Go to the Metalbestos web site and click on the specifications link, the guide covers all aspects of design:

-- Dennis