Porch Roof Support Structure

Concrete slabs can be poured at any height and offer many different finishing options.

Porch roof support structure. The roof structure consisting of the roof framing roof decking sheathing and any internal bracing also functions as a horizontal diaphragm and transfers the horizontal loads imposed on the roof to the supporting walls below. The ceiling joists are laid out turned on edge usually 2x6 or 2x8 tall creating a flat level framework for the rest of the work. A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework. If you are thinking about replacing old rotted porch posts the first thing you ll need to know is how to jack up and support the roof structure properly and.

A planar truss like the one above lies in a single plane and is usually used together to form the roof support structure. The larger the roof is the more support that you are going to need. Concrete front porch foundations usually consist of concrete poured at grade over a base material like stone or gravel. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.

It is a waterproofing layer made of regular felt stacked above the solid. If our example roof has only one beam it must carry half of the total load or 4 000 pounds. Roof failures are often observed on areas of the building where wind pressures are concentrated. Proper porch design is not possible without an understanding of the structural components.

Your porch roof will need to have a lot of support in order for it to stay up through the seasons. While it is not within the scope of this guide to provide detailed instruction in the actual construction of a porch we feel it is important to have at least a basic knowledge of the structural aspects as they greatly effect the overall success of any porch. For larger porches such as wrap around porches you will want to make sure that the support is more than you need. Find columns at lowe s today.

The roof structure as a whole rests on beams the entablature which are in turn supported by the foundation below. Building a porch roof using trusses the simplest form of a truss is one single triangle with fixed sides. Porch foundations from slabs don t have to be just at ground level.