Precast concrete is a construction product produced by casting concrete in a reusable mold or form which is then cured in a controlled environment, transported to the construction site and lifted into place. In contrast, standard concrete is poured into site-specific forms and cured on site.
What They Are. Semi-monthly payments are payments made twice per month on the 1st and 15th rather than once per month on your regular due date. The balance due remains unchanged; if your mortgage is $1,200 per month, you would make a payment of $600 twice each month.
A semimonthly monthly happens twice per month -- typically, on the 15th and the last day. A biweekly payroll occurs every other week and usually includes a standard 80-hour workweek, particularly for salary employees. However, one semimonthly payroll for a certain month can include more days than the other payroll.