PURPOSE: To connect sheets easily and stretch them successively toward an upper section from a lower section in conformity with the progress of construction work by inserting and accepting the expanding sections of the sheets at upper and lower stages into the first hole of a sheet stretching body. ;CONSTITUTION: An expanding section 5 formed at an outermost section on the lower side of a sheet 2 at an upper stage in vertically adjacent two sheets 2 is inserted and accepted into a through-hole 17 through the slit 18 of a sheet stretching body 30 and the expansing section 5 of an outermost section on the upper side of the sheet 2 at a lower stage into a through-hole 19 through the slit 20 of the sheet stretching body 30 respectively. The sheets at the upper and lower stages are connected mutually by each outermost section through the sheet stretching body 30. A belt slip-off preventive member 32 is installed to a belt 35, and the slip-off of the section 39 of the belt 35 from a slot 25 is prevented and the connection of the sheet stretching body 30 and the belt 35 is ensured. The sheet stretching body 30 constituted in this manner is supported to a transverse member through a belt 31 with a buckle, and a large number of the sheets are assembled in a short time while load applied to each sheet stretching body is dispersed in the lateral direction.;COPYRIGHT: (C)1993,JPO&Japio
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