To begin, mark the centerline of the new wall across the ceiling. At each end of the line, measure and mark half the width of the new wall’s top plate in one direction. Snap a chalk line between these marks. Plan one stud at each end and, from the end that meets a wall, measure 15 1/4 inches to locate the inside edge of the first intermediate stud and then 16 inches to the same edge of each additional stud
1.On the floor, lay the top and bottom plates side by side. Carefully measure where each wall od building interior or office interior stud will go and mark with perpendicular lines across the plates, using a combination square so the studs will align perfectly.
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