JPH07317278A - Floor joist supporting structure - Google Patents

Abstract

PURPOSE:To heighten accuracy in installation of floor joists and a floor while facilitating installation of the floor joists by a method wherein a groundsill is made of metal plates, and attachment plates for attaching the floor joists are attached perpendicularly to support surfaces of the groundsill. CONSTITUTION:A groundsill 3, made of steel plate, is fixed to a foundation 4. An angle plate 5 is welded to the support surface 3a on a position where the end of the lengthwise floor joist 2 intersects at a right angle the end of the breadthwise floor joist 12. A bolt 8 is welded to the attachment surface 5a of the angle plate 5. The floor joists 2 and 12 are fixed with wood screws 9 to the support surface 3a of the groundsill 3. Then, floor boards 1 are supported with the floor joists 2 and 12 framed in a rectangular form. Thereby, the floor boards 1 can be set in high flatness without variation in the height.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joist supporting structure for supporting a floor board in a wooden unit construction method for a building.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a conventional joist supporting structure for supporting a floor board.

In the figure, reference numeral 24 is a concrete foundation, and a stud 25 is planted in the foundation 24.
Passed on the 4th. Then, the joists 22 are nailed 26 on the base 23, and the floorboard 21 is supported on the joists 22 assembled in a rectangular shape.

[0004]

By the way, the conventional base 2
For No. 3, imported wooden timber was used as is to reduce costs. For this reason, there may be a large variation in the cross-sectional dimension of the base 23, absorption of moisture,
The cross-sectional shape may be deformed due to drying or the like. As a result, the joist 22 is struck on the base 23, and the joist 22
When the floorboard 21 is stretched on the floor, the levelness of the floorboard 21 is poor, and a step is formed between the floorboards 21. Further, as shown in FIG. 6, a notch 22a for letting out the nut 27 is provided with a joist 2
It had to be installed in 2.

Further, when the joist 22 is attached to the base 23, there is no means for positioning the joist 22, so that the attaching operation is complicated and the positional accuracy varies.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a joist support structure in which the joists and floors can be attached with high accuracy and the joists can be easily attached.

[0007]

In order to achieve the above object, a supporting structure for a joist according to claim 1 is to attach the joist by using a metal plate as a base for supporting the lower surface of the joist supporting a floor board. The mounting plate is attached perpendicularly to the support surface of the base.

According to a second aspect of the present invention, there is provided a supporting structure for a joist, wherein the attaching plate is an angle member, and the attaching plate is attached to a portion where two ends of the joists cross at right angles. However, it is characterized in that it is attached so as to be in contact with both ends.

Further, in the joist supporting structure according to a third aspect of the present invention, a bolt for fixing the floor plate and the wall structural member arranged thereon is provided on the mounting plate so as to project upward. It is characterized by that.

[0010]

According to the joist support structure described in claim 1, since the metal plate having high plate thickness dimensional accuracy and high flatness is used as the base, the joist is placed on the base. Even when the floorboards are stacked and the floorboards are supported, there is no variation in the height of the floorboards and a high levelness can be obtained. Further, since the mounting plate is attached to the base, the joist can be easily positioned by applying a joist to the mounting plate to attach the mounting plate.

Further, according to the supporting structure of the joist according to the second aspect, since the angle member is attached as a mounting plate at a portion where the ends of the two joists cross at right angles, the two joists that intersect at right angles are formed. It can be easily installed while positioning. In addition, since the angle member is attached to a portion where the two joists cross at right angles, the joists can be reinforced against a lateral load.

Further, according to the joist support structure described in claim 3, since the bolts for fixing the wall structural member arranged on the floor plate are attached to the mounting plate, the floor plate is fixed. The work of fastening the wall structural member and the joist to be sandwiched is easy, and the wall structural member and the joist can be easily aligned.

[0013]

EXAMPLES The present invention will be described below based on examples.

1 to 4 show an embodiment of the present invention.

First, the structure will be described. As shown in FIG. 3, a concrete foundation 4 is struck in the ground, and a stud 6 for mounting a base 3 is attached to the foundation 4.
Has been planted.

A base 3 is mounted on the base 4 by means of studs 6 and nuts 7. The base 3 is made of a steel plate and has a flat plate shape as shown in FIG. The steel type of the base 3 is selected according to the desired strength, the dimensional accuracy of the plate thickness, and the flatness. When roughly classified, a cold rolled steel plate is used when the plate thickness is less than about 4 mm, and a heat treatment is used when the plate thickness is about 4 mm or more. Use cold rolled steel sheet. Also, a stainless steel plate may be used to avoid corrosion.

Then, on the supporting surface 3a of the base 3, the angle members 5 and 5 as "mounting plates" are provided at the portions where the ends of the vertical joists 2 and the lateral joists 12 are orthogonal to each other. Are welded. On the vertical mounting surface 5a of the angle member 5,
As shown in FIG. 2, the bolt 8 is welded upward.

The joists 2 and 12 applied to the mounting surfaces 5a and 5b of the angle member 5 are fixed to the base 3 by the wood screws 9.
Mounted on the support surface 3a of the. Further, as shown in FIG. 1, bolt holes are drilled in the joist 12 and the lateral mounting surface 5b, respectively, so that the adjacent joists 12, 12 on the lateral side are bolted together.

The floorboard 1 is supported on the joists 2 and 12 thus assembled in a rectangular shape.

Then, a cross bar 13 as a "wall structural member" of the wall frame 10 is mounted on the floor plate 1 by bolts 8 and nuts (not shown) so as to sandwich the floor plate 1 with the joists 2. There is. Further, similarly to the above, the base 3, the joists 2 and 12, and the floor plate 1 are sequentially arranged on the wall frame 10 (see FIG. 3).

In the supporting structure of the joist having such a structure, since the base plate 3 is a steel plate having high plate thickness dimensional accuracy and high flatness, the joist is supported on the base plate 3. Even when the floor plates 1 and 2 are stacked and the floor plate 1 is supported, the height of the floor plate 1 does not fluctuate and a high levelness can be obtained as compared with the conventional wooden base.
For this reason, there is no concern that the nut 7 will hit the joist 2 as in the conventional case, and it is not necessary to provide the joist 2 with a notch for releasing the nut 7.

Further, since the angle member 5 is attached as a mounting plate to a portion where the ends of the joists 2 and 12 are orthogonal to each other, the two orthogonal joists 2 and 12 can be easily positioned and attached to the base 3. You can Moreover, since the angle member 5 is attached to a portion where the two joists 2 and 12 intersect at right angles, the joists 2 and 12 can be reinforced against a lateral load. In addition, adjacent lateral joists 12, 1
Since 2 is fastened with a bolt, the assembling thereof is easy and the assembling strength can be enhanced.

Furthermore, since the angle member 5 is welded with the bolt 8 for fixing the cross bar 13 arranged on the floor plate 1, the joist 2 and the cross bar 13 that sandwich the floor plate 1 can be easily fastened. In addition, the joist 2 and the crossbar 13 can be easily aligned with each other.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the above-mentioned embodiments, and there are design changes and the like within a range not departing from the gist of the present invention. However, it is included in the present invention. For example, in the above embodiment, the angle member 5 is used as the "mounting plate", but a plate-shaped mounting steel plate 11 as shown in FIG. 5 may be used. Further, the bolt 8 may not be provided on the mounting plate. Further, the base 3 may be made of duralumin in order to reduce the weight.

[0025]

As described above, according to the joist support structure described in claim 1, a metal plate having high plate thickness dimensional accuracy and high flatness is used as the base. Therefore, even when joists are stacked on this base and the floor board is supported, there is no variation in the height of the floor board, and
High levelness can be obtained. Further, since the mounting plate is attached to the base, the joist can be easily positioned by applying a joist to the mounting plate to attach the mounting plate.

According to the joist support structure of the second aspect of the invention, since the angle member is attached as a mounting plate to a portion where the ends of the two joists intersect at right angles, the two joists that intersect at right angles are provided. It can be easily installed while positioning. In addition, since the angle member is attached to a portion where the two joists cross at right angles, the joists can be reinforced against a lateral load.

Further, according to the joist support structure described in claim 3, since the bolt for fixing the wall structural member arranged on the floor plate is attached to the mounting plate, the floor plate is fixed. The work of fastening the wall structural member and the joist to be sandwiched is easy, and the wall structural member and the joist can be easily aligned.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a joist support structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a base according to an embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of a house in an embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a joist support structure using another mounting plate of the present invention.

FIG. 5 is a partial cross-sectional view of a house in a conventional example.

FIG. 6 is a perspective view showing a joist support structure in a conventional example.

[Explanation of symbols]

 1 floor board 2 joist 3 base 3a support surface 5 angle material (mounting board) 6,8 bolt 10 wall structural member (wall frame)

Claims (3)

[Claims] 1. A metal plate is used as a base for supporting a bottom surface of a joist supporting a floor board, and a mounting plate for attaching the joist is provided.
A joist support structure characterized by being mounted vertically to a support surface of the base. 2. The mounting plate is an angle member, and the mounting plate is mounted on a portion where the ends of the two joists cross at right angles so that the mounting surface of the mounting plate abuts on both ends thereof. The support structure for a joist according to claim 1, wherein 3. The mounting plate is provided with a bolt for fixing the floor plate and a wall structural member arranged thereon, projecting upwardly. Support structure for joists described.