i'm designing my house...footprint is 36X24...i'm thinking of glulam beams supported on concrete piers 12feet on center. the beams will run along the 36ft length with engineered wood (Ibeam) floor trusses on 24inch on center running along the 24foot width. three rows of glulams, and 12 foot long floor joists between the beams. Get the picture? i'm most interested in a professional opinion of the plan! many thanks.