Volume Factor the N I volume coefficient so.: 2. For the calculation of the realized con- a) The following are measured: - the volume of the spaces that are counted in the building factor (the volume of the basement spaces that are counted in the building factor is calculated from the final ground level and above), - the volume of open semi-outdoor spaces, - the volume of the areas defined in para. b, d, e, i, i, kz, l, lb and lc of par. 6 of article 11, - the area of the roof only when it is not sub- billing, - the basement space from the final ground level and above. b) Not counted: - all the cases of par. 6 of article 11 except for para. including sub-assemblies within it such as lofts,