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.
In one study, after rewetting and saturating mature concrete specimens of different thicknesses and water-cement ratios, these specimens were allowed to dry at a âstandard caseâ 50 percent relative humidity and 70Â°F. In this study, a chart of correction factors due to another RH in the drying climate is presented.