Laminated floor beams (silent floorng) have excellent load capability over long expanses , if used as (engineered) intended. However, moisture is a threat.
Orienated Strand board (OSB) sheathing has good strength for that purpose ( not as good as more expensive plywood) but limited strength in other apllications - and loses strength if exposed to moisture -even if later dried out. Some special application OSB materials have resins and waxes added to give added water tolerance, such as roofing material.