Fink Roof Truss Span

The shapes and spans shown here represent only a fraction of the millions of designs processed by alpine engineers.

Fink roof truss span. I would guess that you have fink trusses. I m just saying that in general trusses are designed to span from outside wall to outside wall. 28 span fink residential roof truss 4 12 pitch common truss. For this reason they are primarily used in commercial projects or for large domestic dwellings.

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. Residential trusses save time and materials compared to conventional hand framing. The dimensions of your structure will determine the angles formed by the truss s top and bottom beams or chords. Each truss bears the truss plate institute tpi stamp for quality assurance.

Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge. This is the most commonly used truss shape and will handily accommodate a water tank should it be necessary. The top chord spans 16 25 feet and carries a 2 foot wide section of the roof weighing 40 lbs ft2. Alpine truss designs are engineered to meet specific span configuration and load conditions.

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. 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. These steel joints are needed to support the overall truss.

The fan truss generally used for spans over 9m. The fink truss is suitable for spans up to 9 metres. A 56 foot long single span deck truss of fink design was built in 1870 to carry trains of the atlantic mississippi and ohio railroad later norfolk and western railway now norfolk southern railway. If they are a standard fink truss w shape or a howe truss then it should be perfectly safe.

Trusses are professionally designed with state of the art computer programs. Take a camera into the attic and take pictures of the trusses in question. The original location of this structure is unknown. The lumber components are precision cut and assembled together with galvanized steel truss plates in a factory controlled environment.

The same thing is true for the bridge of the truss.