stories in height are particularly suitable for erection in a simple and economic manner using the described and illustrated building sections the specified height 49 of substantially 3 meters is particularly suitable when the sections are principally intended for blocks of apartments but sections of other heights can readily be produced when for example they are to serve for the erection of office buildings or the like alternative internal and external walls and other partitions for office or other commercial use can readily be provided the indicated length 47 of substantially twelve meters width 48 of substantially three meters can also be changed if required and it is also possible to give the sections shapes other than the strict rectangular parallelepiped shape that has been described and illustrated it is noted that in the construction shown in fig3 of the drawings the columns 42 and 45 are located at a distance 90 of substantially 41 2 meters from the short end of the section or unit concerned which incorporates the columns 41 and 46 whereas the far end thereof which comprises the columns 43 and 44 is at a further distance 91 of substantially 71 2 meters from the columns 42 and 45 these distances 90 and 91 also may be varied to meet the individual requirements of.