Fink Roof Truss Span

The original location of this structure is unknown.

Fink roof truss span.

These steel joints are needed to support the overall truss. The entire truss then must carry 3200 lbs and thus the walls at a and d must each push up at 1600 lbs. Residential trusses save time and materials compared to conventional hand framing. Alpine truss designs are engineered to meet specific span configuration and load conditions.

If they are a standard fink truss w shape or a howe truss then it should be perfectly safe. I would guess that you have fink trusses. The more complex the truss framework is the greater quantity of these joints will be required. The top chord spans 16 25 feet and carries a 2 foot wide section of the roof weighing 40 lbs ft2.

Each truss bears the truss plate institute tpi stamp for quality assurance. A truss for a gable roof on one side of your home for example might need to be 15 feet 4 6 m long and 4 6 feet 1 2 1 8 m tall. The shapes and spans shown here represent only a fraction of the millions of designs processed by alpine engineers. So it must carry 2600 lbs evenly distributed along its length which results in the forces shown at joints a g f e and d.

The same thing is true for the bridge of the truss. These will be your most common truss designs. 28 span fink residential roof truss 4 12 pitch common truss. This is the most commonly used truss shape and will handily accommodate a water tank should it be necessary.

I m just saying that in general trusses are designed to span from outside wall to outside wall. The dimensions of your structure will determine the angles formed by the truss s top and bottom beams or chords. Trusses are professionally designed with state of the art computer programs. The lumber components are precision cut and assembled together with galvanized steel truss plates in a factory controlled environment.

Take a camera into the attic and take pictures of the trusses in question. Truss capacity is. Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 1 15 30 snow shingle 40 1 15 20. The fan truss generally used for spans over 9m.

The fink truss is suitable for spans up to 9 metres.