Open Floor Joist Systems

Floor trusses can span farther between bearing points than i joists allowing for larger open rooms.

Open floor joist systems. The three main types of floor joists used in home construction are solid lumber i joists and open web floor trusses. This also reduces the need and cost for extra bearing posts beams and footings. Two types of engineered joists are most frequently used in floor systems today. Floor joist spacing for i joist and 19 2 spacing for open web because the floor plywood tends to get bouncy.

Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. By only covering the trimmable end of the triforce open joist your floor system will be fire compliant as per exception 4 to section r302 13 of the 2015 2018 irc. This is because they are. Floor joist stiffness has most to do with the span of the floor joist.

Vibration control with minimal effort and cost. Open joist trusses are manufactured under license by allegheny structural components inc. I joists have major advantages in high volume construction with standard layouts. Each type of floor joist offers its own unique benefits and drawbacks which is why those working in carpentry all tend to have their own favorite floor joist option though they are still required to be well versed in each type of floor framing.

Asc is committed to establishing open joist as the preferred floor framing product for today s leading builders. The short pieces of i joist which serve as blockages between the joists in an i joist floor are elements working in shear and not in bending as a strongback would do. You may compare strongbacks in an open web floor system with blocking and nailing block in an i joist floor system. Open joist floor trusses are engineered for superior strength which can be used to achieve optimum floor system performance or to maximize floor framing efficiencies.

Of emlenton pennsylvania a company founded and operated by the original staff that introduced open joist to the united states in 1995. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. Trimjoist is the marriage of an open web floor truss and a trimmable wooden i joist bringing the best features of each to the relationship. Our open joist system the strength of the triangulation the accuracy of multiple joints optimizing the use of wood in a responsible manner and adjustment flexibility to the site makes the triforce open joist the only floor open joist and adjustable made entirely of wood and assembled without a metal connector.

Open web trusses with wood webbing held together with metal plates. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities. The re engineering of the wooden floor joist that.