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Open Web Joist alternate support point

Open Web Joist alternate support point

Open Web Joist alternate support point

(OP)
I must provide temporary underpinning support for a group of in-place "K" type OWJ's so their support beam can be replaced. The mfgr. and "model" No. are unknown. Is there a generic alternative support point on these OWJ's that I can use?

RE: Open Web Joist alternate support point

Support the top flanges along a distance that includes two or three webs connections near the beam being replaced.

RE: Open Web Joist alternate support point

I have supported them at the first bottom chord panel point.  This only reverse loads the first web - but the load is quite minor.  The seond web may carry a little more than design but do it when there is no live load on the joists and you should be fine.  

Mare sure that the joists are well braced - you do not want them to roll.  And give it adequate bearing area.

RE: Open Web Joist alternate support point

I have supported them at the first or second bottom chord panel points as MiketheEngineer has described. I indicate to the contractor the required shoring load.

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