BUILDING

A building (1) includes a structural body (5) having a floor projecting outside. The structural body (5) includes base members (10), a cross member (16) extending between the base members (10), a base portion (17) supported by the cross member, props (20) arranged on the base portion (17), a floor member (26) supported by the props (20), and a reinforcement member (27) that reinforces the structural body (5). The reinforcement member (27) is arranged at a lower position than the base portion (17) and extends between the base members (10).

TECHNICAL FIELD

The present invention relates to a building including a structural body that has a floor projecting outside.

BACKGROUND ART

Patent Literature 1 discloses a building including a deck.

The deck includes a support portion, a support device arranged on the support portion, and a tile supported by the support device.

CITATION LIST

Patent Literature

Patent Document 1: Australian Patent Application Publication No. 2005211518

SUMMARY OF INVENTION

Technical Problem

There is still room for improvement in the strength of a structural body that includes a floor projecting outside.

Solution to Problem

(1) A building that provides a solution to the above problem includes a structural body that has a floor projecting outside. The structural body includes base members, a cross member, a base portion, props, a floor member, and a reinforcement member. The cross member extends between the base members. The base portion is supported by the cross member. The props are arranged on the base portion. The floor member is supported by the props. The reinforcement member reinforces the structural body. The reinforcement member is arranged at a lower position than the base portion and extends between the base members. This structure improves the strength of the structural body that has the floor projecting outside.(2) In the building according to description (1), at least one of the props is arranged above the cross member with the base portion located in between. With this structure, the cross member supports the floor member with the prop located in between. This restricts bending of the floor member in the vertical direction.(3) The building according to description (1) or (2) includes a room connected to the structural body. The floor member in the structural body forms a floor surface that has the same height as a floor surface of the room. This allows a user to smoothly move to the floor projecting outside from the room.(4) In the building according to any one of descriptions (1) to (3), the base portion includes an underlayer and a waterproof layer arranged on the underlayer. This limits deterioration of the base portion.(5) In the building according to any one of descriptions (1) to (4), the base portion is sloped.

This structure allows water to drain quickly.(6) In the building according to description (5), the structural body further includes a first drain pipe and a second drain pipe. The first drain pipe is connected to a lowermost part of the base portion. The second drain pipe is connected to a part of the base portion that is higher than the part connected to the first drain pipe. This avoids the overflow of water onto the floor surface.

Advantageous Effects of Invention

The above-described building improves the strength of the structural body having the floor projecting outside.

DESCRIPTION OF EMBODIMENT

A building will now be described with reference toFIGS.1to4.

As shown inFIGS.1and2, a building1includes a main body2and a structural body3. The structural body3has a floor projecting outside the main body2. The building1further includes a room4connected to the structural body3(refer toFIG.3).

Examples of the structural body3include a balcony5, a veranda, a terrace, and a deck. The structural body3may be arranged on the ground floor of the building1. The structural body3may be arranged on a floor higher than the ground floor of the building1. In the present embodiment, the balcony5is described as an example of the structural body3.

As shown inFIGS.3and4, the balcony5includes base members10, cross members16, a base portion17, props20, floor supports25, floor members26, and reinforcement members27. The balcony5may further include a first drain pipe31and a second drain pipe32. In the description of the balcony5, the vertical direction will be referred to as the height direction DZ, the direction extending parallel to the wall of the main body2will be referred to as the widthwise direction DX, and the direction orthogonal to the widthwise direction DX and the height direction DZ will be referred to as the lengthwise direction DY.

The base members10of the balcony5include a first base member11, a second base member12, a third base member13, and a fourth base member14. The first to fourth base members11to14are formed from wood or steel. The first and second base members11and12are thicker than the third base member13and the fourth base member14. Specifically, the dimensions of the first and second base members11and12in the height direction DZ are at least two times greater than the dimensions of the third and fourth base members13and14in the height direction DZ. The dimensions of the first and second base members11and12in a direction intersecting the height direction DZ are equal to the dimensions of the third and fourth base members13and14in the direction intersecting the height direction DZ. The first base member11forms a beam of the main body2. The second base member12is arranged parallel to the first base member11at a position separated from the first base member11by a predetermined distance in the horizontal direction. The second base member12is fixed to the first base member11by the third and fourth base members13and14. The third base member13supports one end of the balcony5in the widthwise direction DX, and the fourth base member14supports the other end of the balcony5. The third and fourth base members13and14extend from the first base member11to the second base member12.

The cross members16extend between the base members10. Specifically, the cross members16are arranged to extend from the first base member11to the second base member12. The cross members16are arranged parallel to the third and fourth base members13and14between the third base member13and the fourth base member14. The cross members16are arranged such that the height of the cross members16gradually becomes lower toward the middle from the ends in the widthwise direction DX. The base portion17is supported by the cross members16. The base portion17extends over the cross members16and is attached to the cross members16. The base portion17is sloped. Specifically, the base portion17is downwardly sloped from the ends of the balcony5toward the middle of the balcony5.

In an example, the base portion17includes an underlayer18and a waterproof layer19arranged on the underlayer18. The underlayer18is formed by plate members. Each plate member is arranged on the cross members16. The plate members are laid out over the entire balcony5to form the underlayer18. The waterproof layer19is formed by a waterproof sheet. The waterproof sheet covers the entire underlayer18.

The props20are arranged on the base portion17. Each prop20includes a seat21, a shaft22, and a rest23. The shaft22is arranged on the seat21in a movable manner. Each floor support25is set on the rest23. The shaft22is moved relative to the seat21in the height direction DZ. For example, a thread is formed in the circumferential surface of the shaft22. The shaft22is rotated to move the shaft22upward or downward. The movement of the shaft22changes the dimension from the bottom surface of the seat21to the upper end surface of the shaft22. The rest23is attached to the upper end surface of the shaft22.

The first drain pipe31has an upper open end connected to the lowermost part of the base portion17. The first drain pipe31has a lower open end connected to drainage33. The second drain pipe32has an upper open end connected to a part of the base portion17that is higher than the part of the base portion17connected to the first drain pipe31. The second drain pipe32has a lower open end connected to the drainage33.

At least one of the props20is arranged above a cross member16with the base portion17located in between. Preferably, each one of the props20is arranged above the cross members16with the base portion17located in between. One or more props20are arranged above each cross member16. In an example, the props20are arranged next to one another in the lengthwise direction DY. The positions of the shafts22of the props20are adjusted in the height direction DZ such that the rests23are even with one another.

The floor supports25are formed from, for example, wood or resin. Each floor support25is arranged on the rests23of the props20that are aligned in the lengthwise direction DY. The floor supports25are arranged parallel to one another in the widthwise direction DX. In an example, the floor supports25are arranged in equal intervals in the widthwise direction DX.

The floor members26are formed from, for example, wood, resin or ceramic. In an example, the floor members26set on the floor supports25extend across the floor supports25. The floor members26are arranged next to one another in the lengthwise direction DY.

In an example, the floor members26form a floor surface26ahaving the same height as a floor surface4aof the room4. The floor surface26aformed by the floor members26may be lower than the floor surface4aof the room4. In an example, the floor surface26aformed by the floor members26is lower than the floor surface4aof the room4by a predetermined height. The predetermined height is set in a range from 5 mm or greater to 15 mm or less.

The reinforcement members27are formed from, for example, wood or steel. The reinforcement members27reinforce the balcony5. The reinforcement member27are arranged at a lower position than the base portion17. The reinforcement members27extend between the base members10. Specifically, the reinforcement members27extend between the first and second base members11and12. One end of each reinforcement member27is forced against the side surface of the first base member11, and the other end of the reinforcement member27is forced against the side surface of the second base member12. The reinforcement members27are thinner than the first and second base members11and12. The reinforcement member27may have the same thickness as the third and fourth base members13and14. Alternatively, the reinforcement member27may be thicker than the third and fourth base members13and14. The reinforcement members27are fixed to the first and second base members11and12at positions lower than the third and fourth base members13and14.

The first to fourth base members11to14support the balcony5. Further, the reinforcement members27, which extend between the first and second base members11and12, reinforce the balcony5. The balcony5is supported by the first to fourth base members11to14and reinforced by the reinforcement member27. This strengthens the structure of the balcony5.

In the present embodiment, the second base member12is spaced apart from the first base member11in the lengthwise direction DY. The second base member12is fixed to the first base member11by the third and fourth base members13and14. The cross members16are arranged between the third and fourth base members13and14. The cross members16extend between the first and second base members11and12. The open space above the cross members16is used for drainage. If the reinforcement member27were to be arranged in the open space, rain water will wet the reinforcement member27. Thus, the reinforcement members27are arranged under the base portion17. The reinforcement members27are fixed to the first and second base members11and12at positions lower than the third and fourth base members13and14.

In this manner, the balcony5includes the first to fourth base members11to14, the cross members16, and the reinforcement member27. This improves the strength of the entire balcony5. Further, the reinforcement members27are fixed to the first and second base members11and12at positions lower than the third and fourth base members13and14. Thus, the balcony5resists torsion. Further, the reinforcement members27are arranged under the base portion17. This limits deterioration of the reinforcement member27.

The present embodiment has the following advantages.(1) The building1includes the structural body3having a floor that projects outside. An example of the structural body3is the balcony5. The structural body3includes the base members10, the cross member16, the base portion17, the props20, the floor member26, and the reinforcement member27. The base portion17is supported by the cross member16. The floor member26is supported by the props20. The reinforcement member27reinforces the structural body3. The reinforcement member27is arranged at a lower position than the base portion17and extends between the base members10. This structure improves the strength of the structural body3that has the floor projecting outside.(2) At least one of the props20is arranged above a cross member16with the base portion17located in between. With this structure, the cross member16supports the floor member26with the prop20located in between. This restricts bending of the floor member26in the vertical direction.(3) The floor surface26aformed by the floor member26in the structural body3has the same height as the floor surface4aof the room4. This allows a user to smoothly move to the floor projecting outside from the room4.(4) The base portion17includes the underlayer18and the waterproof layer19arranged on the underlayer18. This limits deterioration of the base portion17.(5) The base portion17is sloped. This structure allows water to drain quickly. For example, the base portion17receives rain water that leaks through gap between the floor members26. The sloped base portion17readily guides the rain water to the first drain pipe31.(6) The structural body3further includes the first drain pipe31and the second drain pipe32. The first drain pipe31is connected to the lowermost part of the base portion17, and the second drain pipe32is connected to a part of the base portion17that is higher than the part of the base portion17connected to the first drain pipe31. This avoids the overflow of water onto the floor surface26a.

Modified Examples

The above embodiment exemplifies, without any intention to limit, an applicable form of the building1. The building1can take a form differing from the form described in the embodiment. In an example, some of the components of the embodiment may be replaced, changed, or omitted. Further, another component may be added to the embodiment. Examples of a modification to the embodiment will now be described.

The building1may be of any type. The building1may be a residential house, a vacation house, a factory, an office building, or a public facility such as a school.

In the present embodiment, the floor members26are arranged above the props20with the floor supports25located in between. However, the floor members26may be arranged directly on the props20.

The structural body3may have any planar shape. In the present embodiment, the balcony5is rectangular in plan view. Alternatively, the balcony5may be triangular or pentagonal in plan view.

REFERENCE SIGNS LIST