Form Made Of Thermoplastic Resin

Abstract

A form 10 for constructing a concrete structure is formed of a thermoplastic resin containing an inorganic material, and includes a first main plate 11 facing a poured concrete, a second main plate 12 opposing this first main plate, and partition plates 15, 16 extending between these first and second main plates. The partition plates 15 construct a plurality of first reinforcement parts 30 having at least one kind of cross sectional shape selected from an approximately rectangular shape and an approximately truss shape in a width direction from right to left. And the partition plates 16 construct a second reinforcement part 31 having an approximately rectangular cross sectional shape of a width capable of supporting an outer edge of a head part 51 of a nail 50 at a portion 52 where a columnar reinforcement body 40 for supporting a form is to be nailed.

1 . A form, which is made of a thermoplastic resin containing an inorganic material, for constructing a concrete structure comprising: 
 a first main plate facing a poured concrete; a second main plate opposing the first main plate; and partition plates connecting the first and second main plates, wherein    the partition plates construct (1) a plurality of first reinforcement parts having at least one kind of cross sectional shape selected from an approximately rectangular shape and an approximately truss shape in a width direction from right to left, and (2) a second reinforcement part having an approximately rectangular cross sectional shape of a width capable of supporting an outer edge of a head part of a nail at a portion where a columnar reinforcement body for supporting a form is to be nailed.    
   
   
       2 . The form according to  claim 1 , wherein at least one of two reinforcement parts adjacent to said second reinforcement part serves as a third reinforcement part having an approximately rectangular cross sectional shape.  
   
   
       3 . The form according to  claim 2 , wherein said third reinforcement part has 
 an oblique rib which is a diagonal line of the approximately rectangular shape of the third reinforcement part, expanding from a forward side in the nail driving direction to a faraway side of two diagonal lines or    an approximately X-shaped rib which is two diagonal lines of the approximately rectangular shape of the third reinforcement part.    
   
   
       4 . The form according to  claim 1 , wherein an indicated part for indicating a nail driving portion is formed in said first main plate.  
   
   
       5 . The form according to  claim 1 , wherein a surface layer made of a soft or semi-hard resin similar to this main plate is provided at least on the surface of the first main plate facing poured concrete of said form.  
   
   
       6 . The form according to  claim 1 , wherein a hollow part between said partition walls is filled with an expanded resin body.