They are designed to carry only the weight of the drywall or plaster depending on the age of your home.
Attic support structure.
This photo indicates a properly installed knee wall in a attic for additional support to roof structure.
This is made up of ceiling joists typically 2x6 or larger boards.
Depending on the roof covering material either horizontal laths battens or purlins are fixed to the rafters.
Typically ceiling joists are 2 6 or 2 8.
The floor structure of an attic is also the framing for the ceiling beneath it.
Attic and roof structure inspection your home check.
Addition of engineered i joists.
Or boards plywood or oriented strand board form the roof deck also called the sheeting or sheathing to support the roof covering.
The red lines on the left side indicate the knee wall.
August 17 2020 by zamira leave a comment.
More times than not the floor structure of an existing attic is actually a ceiling joist.
Collar tie used for adding additional support to attic roof supports.
As long as they are not damaged the joists should be strong enough to allow you to move around in the attic for an inspection and to provide storage for typical boxed items.