is a replacement needed for damaged truss?

Question

The gable wall roof truss and the first truss situated adjacent to the gable wall are notched at three locations on the roof for 2x4 outriggers.
The notches cut into the top chord member of the roof truss cause the truss to be overloaded when supporting the full building codes required loads. The truss is overloaded at the reduced section in the top chord member by a factor of approximately 2.2.

By the building code, would I have to replace or repair the truss for safety in the future?
Thanks for your help.

Answer 1

I would nail or bolt a segment of a chord to the defective trusses, say 600 mm either side of the notch (like a fish plate). I'd use a string line to make sure the defective trusses are straight before affixing those segment of a chord. I would also affix a segment to the bottom chord (also like a fish plate) and affix a strut under the notched area. The segment to the gable truss will need to be notch so that the outrigger can pass through to the next truss, but that second truss need not be notched.

Answer 2

You can repair a truss only with instructions from an engineer. What I'd do if I screwed up like that would be to call the truss supplier and tell them what you did. They might give you written permission to keep the notches or take your order for replacement trusses or since it was their engineer that designed them in the first place -- they might even give you instructions for fixing them.

Answer 3

for safety reason's yes you would have to replace them or you could straighten them by adding 3/8 ply wood to each side of the truss where thees notches are hope it helps

Answer 4

You are deservedly flunking your exam. By code, ANY structural member that doesn't meet code must be repaired or replaced. This it true REGARDLESS of what the code is. You don't even need to know what any of the question means to know that.

Answer 5

Id ask the inspector,better now then later