pumped from the bottom through opening 4 either with one pump or more pumps when different colored or different properties concretes are used for two wythes each type of concrete is pumped with different pump the rate of pumping concrete is adjusted such that the concrete in both wythes fills up to substantially the same height simultaneously in the alternate method of pumping the concrete can be pumped from the sides near the base through the openings 12 on either or both sides or from the end of the form 2 the pumping is continued until the concrete raises to the top of the form 2 or to the required height of the wall if needed lifting devices not shown are placed near the top of the forms using magnets or tied to the reinforcing 9 when the concrete has hardened sufficiently the forms are removed after the lifting lines are attached to the lifting hardware which is placed in the concrete during the fabrication process the multiple openings 4 allow plastic concrete to enter the form from both sides of the insulation 6 if desired concrete can be provided from different sources to the different wythes on opposite sides of the insulation 6 accordingly different types of concrete can be used for the.