Attic Support Structure

This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.

Attic support structure. Keep the spacing 4 feet apart at most. Some of these can support the roof and prevent ridge sagging and wall spreading. Attic and roof structure inspection your home check. 3 place a two by four against the rafter along the bottom.

Snap a chalk line against the rafters on both sides of the attic to mark the location of the braces. Addition of engineered i joists. Extra support for the trusses can be made by placing a 2 by 4 inch piece of lumber from each truss on one side to the truss on the other side high enough to provide head room but low enough to provide support for the trusses. More times than not the floor structure of an existing attic is actually a ceiling joist.

Depending on your attic structure an engineer may recommend the installation of lvls between the existing joists to bring the floor structure up to code. Typically ceiling joists are 2 6 or 2 8. They are designed to carry only the weight of the drywall or plaster depending on the age of your home. Assuming a live load of 20psf and the rafters were ss douglas fir looks to be 2 the max.

This is made up of ceiling joists typically 2x6 or larger boards. In this situation the walls of a finished attic space or room would go with the roof line. Span would be 14 4 for 2 x 6. August 17 2020 by zamira leave a comment.

Once we look to make the attic livable space the existing ceiling joists usually will not meet the. Collar tie used for adding additional support to attic roof supports. The red lines on the left side indicate the knee wall. This attic structure needs additional support and was most likely repaired by a non professional.

How to get a loft conversion yell fix that scary roof popping noise elements in the loft roof structure feasible is it to remodel your attic loft conversion. In a nutshell it s made up of a central vertical post called the king post two rafters meeting at the apex and a tie beam or the horizontal base. This photo indicates a properly installed knee wall in a attic for additional support to roof structure. The floor structure of an attic is also the framing for the ceiling beneath it.

The king post roof truss is the simplest of the trusses because of its simple composition.