H-beam and method for constructing concrete form using h-beam and non-metallic sheathing board

An H-beam configured to connect edge portions of sheathing boards for slabs disposed horizontally on a top of sheathing boards for upright walls so as to extend the sheathing boards horizontally and to connect the sheathing boards to layers of wood disposed beneath the sheathing boards and held up by supports, the H-beam comprising:

• a middle support part interposed between two adjacent sheathing boards so that lateral surfaces of the edge portions of the two adjacent sheathing boards respectively contact both lateral surfaces of the middle support part and are supported by the middle support part;
• edge connection parts bent perpendicular from top and bottom portions of the middle support part and extending forward and backward in a longitudinal direction in order to cover top and bottom surfaces of the edge portions of the sheathing boards and support the same;
• and
• a nail hole formed vertically through the middle support part, through which an additional nail is driven into the layers of wood disposed beneath the H-beam from a hitting space,
• wherein, with respect to a through-hole formed at the edge portion of the sheathing board and an additional securing pin fitted through the through-hole,
• the edge connection parts opposing each other in the width direction are formed with pin holes aligned in the width direction so that, in the state in which the pin holes are aligned with the through-hole of the edge portion of the sheathing board interposed between the edge connection parts, the securing pin is fitted through the pin holes and the through-hole in order to secure the sheathing board to the edge connection parts.

A method for constructing a concrete form using an H-beam comprising:

• preparing H-beams for connecting sheathing boards for upright walls, each of the H-beams including a middle support part interposed between two adjacent sheathing boards so that lateral surfaces of edge portions of the two adjacent sheathing boards respectively contact both lateral surfaces of the middle support part and are supported by the middle support part, and edge connection parts bent perpendicular from both side end portions of the middle support part and extending forward and backward in a longitudinal direction in order to cover front and rear surfaces of the edge portions of the sheathing boards and support the same, wherein, with respect to a flat tie arranged perpendicular to the edge portions of the sheathing boards across a pair of sheathing boards spaced apart from each other in a width direction, the middle support part is formed with a tie receiving groove to receive the flat tie inserted therein, the flat tie arranged across the sheathing boards in the width direction is provided in plural, and, with respect to a tie slit formed at a concave recess of the sheathing board, which one of the flat ties penetrates, each of the edge connection parts has a cut portion cut away from a distal end portion thereof corresponding to the tie slit, so that the flat tie penetrates the cut portion;
• arranging a plurality of sheathing boards to be spaced a certain distance apart from each other in the width direction and extend in the longitudinal direction while standing upright;
• connecting the sheathing boards using the H-beams such that edge portions of each two adjacent sheathing boards extending in the longitudinal direction are inserted into a space between edge connection parts of the H-beams;
• and
• fitting flat ties through the sheathing boards arranged in the width direction so as to maintain a predetermined interval in the width direction between the sheathing boards.