FIELD: building industry, particularly in situ wall forming with the use of permanent form. SUBSTANCE: wall is built of concrete or similar material with the use of extensible form/reinforcement, which is inserted into wall. Form/reinforcement has two form walls positioned opposite to each other and connected by linking means. Linking means are pivotally connected to form walls by stiffening components formed as channel bars fixedly connected with form walls. Space between form walls installed into extended position is filled with filling material, such as concrete. Wall has at least one reinforcing member arranged into space defined by form walls. Reinforcing member comprises at least one vertical bar and at least two horizontal cross-bars slidably mounted into stiffening components. Linking means at least of one form wall are pivotally connected to stiffening components at a distance from form wall. Stiffening members are fixedly connected to form wall by dimension inserts. Wall additionally has insulating panel. Insulating panel thickness is equal to distance between stiffening components and form walls or constitutes a part of said dimension. EFFECT: easy installation and positioning of steel reinforcing bars. 12 cl, 4 dwg
