Smallest Floor Truss I Ve Seen

72 5 0 mi ni m u m girder floor truss floor truss jacks a a bearing wall girder floor truss floor truss jacks bearing wall cantilevered floor truss two 2x rim joists 24 max.

Smallest floor truss i ve seen. The end result is a wood floor truss that looks much like large steel bridges that span rivers and canyons. The upper 2 x 4 members of these truss floor joists are set into masonry pockets in the concrete block foundation walls but the lower 2 x 4 members are not. Residential construction has seen a tremendous increase in the use of floor trusses over the past several years. My architect who is admittedly old school conservative specified spacing at 16 oc with 3 4 ply sub floor.

The smallest i ve ever personally seen is a 4 x 3 rectangle. This also reduces the need and cost for extra bearing posts beams and footings. Yeah i ve seen different forms of these trusses before. And parallel to floor truss span strongback lateral supports 24 max.

Floor trusses go by many names and since parallel chord 4x trusses can be used in roof systems the term floor truss is not necessarily the most accurate term although it is the one in most common use. At an inspection yesterday of a town home built in the early 80 s i found these truss floor joists. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. Floor trusses are not to be confused with the traditional construction method of using floor joists.

Well i should say i ve seen photos diagrams and articles about them. I am currently building a slab on grade home with 24 deep open web floor trusses 24 selected with the intent of having 2 20x21 house long chases to run low velocity hvac ducts supply and return and avoid bulkheads. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Roof floor truss manual 7 31 08 10 43 am page 12.

Although both are systems designed to provide structural support to a floor system the two are markedly different in a number of ways. The house is 30 wide and the joists are basically designed. We can conduct the same classes and studies for an entire carreer and still not exhaust the market potential and write the same blog articles too. I still haven t seen one in a real house yet.

I m sure you ve seen hundreds of these where the horizontal top and bottom members of.