Very high levels of AST (more than 10 times normal) are usually due to acute hepatitis, sometimes due to a viral infection. With acute hepatitis, AST levels usually stay high for about 1-2 months but can take as long as 3-6 months to return to normal.
MFMA recommends the relative humidity level for a concrete slab for a non-glue-down maple floor system be 85% or lower and for glue down systems the concrete slab relative humidity level should be 75% or lower before installation.
(OP). We're looking to approve a thin, bonded topping slab. The substrate is a cast-in-place, structural concrete slab 8 to 9 1/4 thick spanning 28-feet, built in 1950 and designed for 125psf.The structural floor system is a two-way slab.For a renovation project, the architect has specified floor leveling underlayment for all floors.As an alternate, the contractor proposes a hard rock concrete topping, 1.25 minimimum to 2.5 maximum +/- thickness, 3/8 rock.OP). We're looking to approve a thin, bonded topping slab. The substrate is a cast-in-place, structural concrete slab 8 to 9 1/4 thick spanning 28-feet, built in 1950 and designed for 125psf.