Cutting Trusses For Attic Stairs

Furnaces are often located in attic areas.

Cutting trusses for attic stairs.

If you really want to modify the framing of your attic and roof then consult with a licensed professional structural engineer. Head off the truss to the others with double 2x10 as normally done for the floor load and sheeth the floor. Hello i am working on a project which i am using attic trusses to be used for a living space approximately 32 wide 10 12 pitch spaced 2 o c. I have never built a staircase to attic trusses only drop down stairs but i am planning on leaving one truss out and doubling the ones to ether side to create a 4 opening.

Home owners sometimes will cut trusses to make more storage space in the attic or to do other modifications or remodeling. The building code irc r802 10 4. I wouldn t cut any trusses especially the bottom chord under tension holding the outside walls from spreading and the truss together. Don t modify cut wood trusses.

If you live in a house with engineered manufactured trusses then don t mess with them. Looking to take advantage of some open space in our attic and want to install an attic ladder. Replacement of these furnaces can be difficult and sometimes cannot be done without cutting or modifying a truss. Trusses span out to out not out to an inside wall unless engineered that way.

Never cut any structural member of a truss. My recommendation is really simple. Before i do can anyone help me answer the following questions. Lay a 4x8 3 4 sheet of plywood on each end of the truss on the bottom chord spanning to the two trusses on each side of the one to be cut.

1 can the joist be cut to make room for the attic ladder. 2 how much weight could the ceiling joist hold. This would require cutting some of the ceiling joist. Cutting roof trusses is possible but a structural engineer must design the plan for the truss modification to prevent roof collapse.