Floor Joist Braces Ducts

Walking on joists before all accessories and floor decking are installed i joists are unstable and can roll over if walked on leading to injuries.

Floor joist braces ducts.

Funny i am in the middle of writing an article on this very thing. I did an audit on a house the other day and they have several of them. Whether your home is new or old it is sometimes necessary to install floor joist bracing in order to eliminate squeaking and deflection in the flooring itself. To make matters worse the old metal ducts leak a ton or maybe two and there is a small sewage leak in the crawl located right under one of the pans.

But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. When building a house or even a deck it is important to confirm you have the correct joist sizes spans and spacing before you get started. Finally if all else fails drop your pipes and ducts down below the joists and box them in with wood framed. Don t allow your crew to walk on i joists or install subfloor sheathing until all hangers blocking panels and temporary safety bracing strapping are fully installed.

Although not as good as solid or cross bridging a 2 x 4 supporting the duct work as shown in figure 4 would provide more support and load sharing than a light piece of metal. Make sure not to install joists so they run parallel to and directly under walls where you intend to install ductwork. While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length. Cross bracing and solid blocking.

Joist span and spacing is set by your local building code. Figure 4 2 x 4 installed below duct work table 1 provides the correct quantity of bridging relative to the span of the floor joist. Duct work is mostly 8 round but going to get some oval. Bracing will stiffen a floor system prevent floor joists from twisting and increase overall stability however there are actually two types of floor joist bracing commonly used.

Floor joists are 2x10s the floor appears to be fullly nailed down solid 3 4 planks. One bedroom is 12x10 the other 10x10 i ve decided to use oval duct to go underneath the cross bracing that would be dead center of the living room. Sometimes the best route for a flexible duct run is up and over an obstruction.