Porch Roof Header

There will be no ceiling on this porch just the rafters battens holding up the tin roof.

Porch roof header.

This calculator matches up with 90 of the applications in the 2012 international residential code book. You will normally build a header out of 2x6 or 2x8 planks. Frame your porch roof by continually adding rafters until it extends one foot past your porch walls or support columns. Step 3 buy lag bolts long enough to go through the header board and into the studs or trusses by at least 1 1 2 inches lag bolts have a bolt head and a pointed.

Place the header on top of the columns and secure by toe nailing. Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables. For each application a pdf download is available. Again this house has the same width dimension but it has 2 levels.

Loads are contributed to the lower header by the roof upper walls and 2nd floor system. For heavy roofs or in. Most interior beams need to include the roof load. Calculating loads on headers and beams joseph west joseph west.

For a porch roof the beam needs to be sized according to the maximum snow loads in your area and you must know enough about the porch design to determine how the load will be distributed and over what distance the beam will carry the load. An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. A fascia board which is a roofing material that helps compensate when there are inevitable inconsistencies in rafter length will mount on the front and on the sides of your porch roof frame. The architectural graphic standards lists the weight of an exterior 2 6 wall as 16 pounds per ft 2.

Loading conditions are detailed below. It has been my experience to never use a beam smaller than a two ply 2 x 8. Proposed porch header will be 2ea 2 8 w 1 2 ply sandwiched inbetween this header will be supporting 8 long 2 6 rafters on 16 centers on a 3 12 pitch. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

Sandwich a piece of 1 2 inch plywood in between the boards and nail together. Can i span 10 3 with this size header. Ensure that it is substantial. Measure with a tape measure from the porch floor to the height required on both sides of the porch and snap a level chalk line between those points to mark the bottom of the header.

Universiy of massachusetts amherst. When building a porch roof the header carries most of the weight of the roof. Maximum rafter spans for a patio roof.