Patio Roof Trusses

A planar truss like the one above lies in a single plane and is usually used together to form the roof support structure.

Patio roof trusses.

A cantilever truss allows for level coverage past the exterior wall such as patios porches entryways and other offsets in the building elevation by moving one or both bearings inward from the end of the bottom chord up to 1 4 of the span. Building a porch roof using trusses the simplest form of a truss is one single triangle with fixed sides. Maximum rafter spans for a patio roof. These types of trusses are often used to create multilevel roof lines or construct additions to an existing building.

By doing this method you will have a clean finish that is connected to the wall line. Build a fink truss to bolster a floor roof or deck. Having said that you could just over build. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

They are designed at a 4 12 pitch to be spaced 2 foot on center. The tables below give maximum spans for rafters and beams. Fink trusses were originally invented for the purpose of beefing up bridges but many contractors now use them to increase the strength of interior structures. The lower the pitch the stronger the trusses joists have to be ie 2x8 may be required rather than 2x6 over a 17 foot distance.

A pitch truss with a sloping or non sloping vertical interior ceiling detail. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. They are extremely strong and normally constructed off site and made to specific measurements. After that cut the rafters back to the wall line.

The fireplace also offers a built in refrigerator and wood storage. Architectural steel roofing is used for the roof. These trusses the meet building code criteria as specified by structural building components of america sbca and the truss plate institute tpi. You can raise the patio roof up to 500 millimeters by removing the eaves fascia and gutter.

The back channel is connected to the rafter directly and reinforced. In a fink truss the internal joists are arranged in a w shape ensuring even weight distribution from one end to the other. As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss. This type of truss is perfect for the dining room living room great room and kitchen.

Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber. This would involve probably 2x8 trusses set at 12 on center and the support beam made of 3 2x8s laminated together set at 12 from the house so the eaves overhang is about 24. It can take various forms and often used for aesthetic purposes adding height and focal interest to the ceiling.