Cutting Trusses For Attic Stairs

Any field modification that involves the cutting drilling or relocation of any structural truss member or connector plate shall not be done without the approval of the truss manufacturer or a licensed design professional.

Cutting trusses for attic stairs.

2 how much weight could the ceiling joist hold. 1 can the joist be cut to make room for the attic ladder. Without the continuous bottom chord you will have two 1 2 trusses though they wouldn t be trusses just triangles. 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. Home owners sometimes will cut trusses to make more storage space in the attic or to do other modifications or remodeling. 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. If you really want to modify the framing of your attic and roof then consult with a licensed professional structural engineer.

Before i do can anyone help me answer the following questions. 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. Cutting roof trusses is possible but a structural engineer must design the plan for the truss modification to prevent roof collapse. My recommendation is really simple.

This is done to hold the bottom chord from pushing the wall out. Furnaces are often located in attic areas. This would require cutting some of the ceiling joist. Looking to take advantage of some open space in our attic and want to install an attic ladder.

If you live in a house with engineered manufactured trusses then don t mess with them. Head off the truss to the others with double 2x10 as normally done for the floor load and sheeth the floor. Don t modify cut wood trusses. Trusses span out to out not out to an inside wall unless engineered that way.