Carryable unit body for forming a foundation of a house, a foundation of a house and a method for forming a complete foundation of a house

A carryable unit body for forming a foundation of a house which comprises:

• a first wall like plate member and a second wall like plate member, each being made of a hardened material and each having a predetermined longitudinal length, and both mutually being oppositely arranged in parallelism with each other with a predetermined space interposed therebetween;
• a plurality of spacer members having a predetermined longitudinal length and each being fixedly arranged in an inside space formed between said first and second wall like plate members in a bridge-building manner in order to make said space formed between said first and second wall like plate members at a predetermined value, and which are arranged in a direction being parallel to the longitudinal direction of said first and second wall like plate members with a predetermined interval;
• at least one main lateral reinforcing rod, which is arranged in said inside space formed between said first and second wall like plate members in a direction being parallel to the longitudinal direction of said first and second wall like plate members;
• a plurality of the main vertical reinforcing rods which are arranged in said inside space formed between said first and second wall like plate members in a direction being parallel to the vertical direction of said first and second wall like plate members and being adjacently arranged with each other in a direction being parallel to said longitudinal direction of said first and second wall like plate members and each being fixedly engaged with said main lateral reinforcing rod;
• and
• an engaging member which fixedly engages at least one of said main lateral reinforcing rods and said main vertical reinforcing rods at said spacer member with each other, and further wherein
• each one of said first and second wall like plate members, is provided with at least one grooved portion arranged on said first and second wall like plate members in a direction parallel to said longitudinal direction of said respective wall like plate member, said grooved portion of which having a concaved configuration concaved from an external surface of said wall like plate member to a back surface thereof, and further wherein,
• a free end portion of said main vertical reinforcing rod which is projected below a lower edge portion of said wall like plate member of at least one of said first and second wall like plate members, being bent so that at least one part of said free end portion thereof projected below said lower edge portion of said wall like plate member, is extended outwardly from said lower edge portion of said wall like plate member beyond said wall like plate member with a predetermined angle to said wall like plate member.