wall foundation 15 has an upper end portion 23 and a lower end portion 22 at about the time that the transport vehicle 39 transports pre cast chain wall foundation 15 to building site 16 a trench or excavation 18 is prepared at building site 16 so that the excavation or trench 18 can receive pre cast chain wall foundation 15 in a leveled position in fig1 an excavator 17 having a bucket or other digging implement 19 is shown digging an excavation 18 or trench in fig2 the excavation or trench 18 preferably provides a bottom 21 that is level or horizontal the trench or excavation 18 can also provide one or more sidewalls 20 pre cast chain wall foundation 15 can include a number of columns 24 28 these columns include corner columns 24 and intermediate columns 25 26 27 28 as shown in fig8 the upper end portion 23 of pre cast chain wall foundation 15 provides a plurality of upper beams 30 and a plurality of lower beams 33 each of the columns 24 28 extends between an upper beam 30 and a lower beam 33 as shown the upper beam 30 can include longitudinal reinforcing bars 31 or rebars and spaced stirrups 32 in fig1 the lower beam or foundation beam 33 includes longitudinally extending reinforcing bars or rebars 34 and laterally spaced apart stirrups 35 likewise each column 24 28 can be provided with vertical reinforcing.