I have a W14 roof beam that I need to partially remove and replace in order to swap out a conveyor (about 8 ft of a 25 ft beam). The W14's span from one W24 girder to the next (50' apart), with one column support in the middle. We can brace the adjacent W14's and frame the opening, support the steel surrounding the opening (only a 12ft ceiling), open the roof to expose the beam, cut the 8 ft section out, remove the conveyor, splice in the replacement section of beam, and close up the roof. The splice will be welded in accordance with AISC (full pen, qualified D1.1 welder, NDT), and we're adding splice plates on either side of the web and under the bottom flange. In a nut shell, at the end of the job the beam will be back in position, but with two welded splices about 8 feet apart.
All the references I see are for bolted splices, except for the AISC manual, and very little detail is provided there other than showing where the backing has to be. The proposed splices are in areas of moment. Is the splice I proposed above consistent with anything out there? My only other alternative is replace the whole beam, but then I have to rip open the roof across the entire span.
Any help or direction is appreciated.
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