Abstract: Providing a half precast slab even in a case where the thickness of the slab in the site condition is too thick to apply conventional precast construction techniques. A half precast slab including a plurality of floor concrete form members and, each floor concrete form member being provided with: a bottom slab of a long length, in response to the floor concrete form member; a pair of side walls installed upright along each longitudinal edge of the bottom slab, in response to the floor concrete form member; thereby, each floor concrete form member is arranged so as to be parallel to each other and be tightly connected to the adjacent floor concrete form member, along the direction perpendicular to the longitudinal direction of each floor concrete form member; the height of the side walls other than the side walls on the most outer edge sides of the whole floor concrete form members is set at a common height that is smaller than the height of the side walls on the most outer edge sides.

Abstract: A form used in a concrete platform is configured so that a connecting member is detachably attached so that top end parts of a concrete side walls are connected with the connecting member. The connecting member is for connecting the top end parts of the concrete side walls to form the load portion by pouring concrete into the form. The form includes reinforcement members provided to extend linearly in a longitudinal direction inside the concrete side walls and inside a concrete bottom plate. The connecting member has an elongated member that is formed to have substantially same length as a width of a gap between the pair of concrete side walls of the form, and an adjusting part that enables an attachment part to move along a top surface of a table-deck portion.

Abstract: A concrete platform has at a top portion, a table-deck portion that has a form, a load portion formed in the form, and an attachment part. The form has a cross-sectional U-shape, and is formed by a pair of concrete side walls and a concrete bottom plate that connects the pair of concrete side walls. The form has reinforcing members provided to extend linearly in a longitudinal direction inside the concrete side walls and inside the concrete bottom plate.

Abstract: Provided is a process for producing a concrete platform to which an object to be supported is fixed, including: a step of forming form having a pair of concrete side walls and a concrete bottom slab that connects the pair of side walls (S2); a step of setting the form on a plurality of piers (S3); and a step of pouring concrete into the form that is set on the plurality of piers (S6).

Abstract: Providing a half precast slab even in a case where the thickness of the slab in the site condition is too thick to apply conventional precast construction techniques. A half precast slab including a plurality of floor concrete form members and, each floor concrete form member being provided with: a bottom slab of a long length, in response to the floor concrete form member; a pair of side walls installed upright along each longitudinal edge of the bottom slab, in response to the floor concrete form member; thereby, each floor concrete form member is arranged so as to be parallel to each other and be tightly connected to the adjacent floor concrete form member, along the direction perpendicular to the longitudinal direction of each floor concrete form member; the height of the side walls other than the side walls on the most outer edge sides of the whole floor concrete form members is set at a common height that is smaller than the height of the side walls on the most outer edge sides.

Abstract: Provided is a process for producing a concrete platform to which an object to be supported is fixed, including: a step of forming form having a pair of concrete side walls and a concrete bottom slab that connects the pair of side walls (S2); a step of setting the form on a plurality of piers (S3); and a step of pouring concrete into the form that is set on the plurality of piers (S6).

Abstract: Providing a half precast slab even in a case where the thickness of the slab in the site condition is too thick to apply conventional precast construction techniques. A half precast slab including a plurality of floor concrete form members and, each floor concrete form member being provided with: a bottom slab of a long length, in response to the floor concrete form member; a pair of side walls installed upright along each longitudinal edge of the bottom slab, in response to the floor concrete form member; thereby, each floor concrete form member is arranged so as to be parallel to each other and be tightly connected to the adjacent floor concrete form member, along the direction perpendicular to the longitudinal direction of each floor concrete form member; the height of the side walls other than the side walls on the most outer edge sides of the whole floor concrete form members is set at a common height that is smaller than the height of the side walls on the most outer edge sides.