i-joist

We need to repair a couple of holes in chipboard flooring which is laid on engineered i-joists. Do you have any advice on how to support the square edges of the new chipboard pieces given the nature of i-joists? Unfortunately it is unclear to us how to attach support/noggins to these joists...

Hello I intend to construct a cross joist loft floor for lightweight storage in my single storey home in France that has a trussed rafter roof (pls see attached figure). 1979 construction with no rot or damage. No water tanks creating additional loads. The existing joists are 35wx95d on...