JP2007138385A - External floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external floor structure suppressing or eliminating a "crossover" while maintaining or improving waterproofness. <P>SOLUTION: The upper face of a floor beam 28 is lower than the upper face of a floor beam 12, and the beam depth of the floor beam 28 is less than that of the floor beam 12. A floor material 76 is arranged at the side of a web 14 constituting the floor beam 28. Further, the thickness dimension of the floor material 76 is not more than a length along a vertical direction from the upper face of a support part 46 to the upper face of the floor beam 28, and the upper face of the floor material 76 is in the same position as the upper face of the floor beam 28 or lower than the upper face of a flange 16. Consequently, the upper face position of the floor material 76 is sufficiently lower than the upper face position of a floor material 20, and the height of a waterproof wall 82 can be sufficiently ensured to maintain or improve waterproofness. Moreover, the upper face of a deck plate 88, the inner peripheral lower part of a flat level sash 24 and the upper face of a floor board 22 are in a flat state to eliminate the so-called crossover or level difference. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an external floor structure of a building such as a balcony or a veranda.

  A “stretch” is provided between the veranda or balcony of the house and the room for waterproofing. On the other hand, from the viewpoint of barrier-free demand in recent years, it is required to eliminate such “stripping”.

For example, in a structure in which a waterproof rising wall is provided at the peripheral edge of the floor surface of a balcony, the portion of the waterproof rising wall corresponding to the sweep-out window becomes “stripping”. Therefore, the structure that cuts off the waterproof rising wall at the part corresponding to the sweeping window and lowers the waterproof rising wall at the part corresponding to the sweeping window lower than the other parts is as follows. It is disclosed in Patent Document 1.
JP 2000-64415 A

  However, in the structure disclosed in Patent Document 1, defects are likely to occur on the waterproof surface by cutting out and lowering the waterproof rising wall at the portion corresponding to the sweep-out window.

  In view of the above facts, an object of the present invention is to obtain an external floor structure capable of suppressing or eliminating “stripping” while maintaining or improving waterproofness.

  The external floor structure according to the first aspect of the present invention includes an outer beam member having a lower upper surface in the vertical direction than the upper surface of the indoor beam member that supports the indoor floor material on the indoor side of the building.

  In the external floor structure according to the first aspect of the present invention, the upper surface of the outer beam member is lower than the upper surface of the indoor beam member in the vertical direction of the building. For this reason, the upper surface of the outer floor material supported by the outer beam member can be set lower than the upper surface of the indoor floor material supported by the indoor beam member. Thereby, the position of the water flowing on the outer floor material is sufficiently below the upper surface of the indoor floor material. For this reason, the overflow of the water flowing on the outer floor material to the indoor floor material is prevented or extremely effectively reduced.

  Furthermore, since the upper surface of the outer floor member can be set lower than the upper surface of the indoor side floor material by setting the upper surface of the outer beam member lower than the upper surface of the indoor side beam member as described above, When a waterproof wall is provided on the outer floor material corresponding to the outer periphery of the material, the height of the waterproof wall is sufficiently secured even if the upper end of the waterproof wall does not protrude beyond the upper surface of the outer floor material. it can. For this reason, “stripping” caused by the upper end of the waterproof wall projecting larger than the upper surface of the indoor flooring material is eliminated or suppressed.

  The external floor structure according to the present invention described in claim 2 is characterized in that, in the present invention described in claim 1, the beam formation of the outer beam member is set lower than the beam formation of the indoor beam member. Yes.

  In the external floor structure according to the second aspect of the present invention, the beam formation of the outer beam member is set lower than the beam formation of the indoor side beam member. For this reason, the position of the upper surface of the outer beam member can be sufficiently lower than the upper surface of the indoor beam member without lowering the position of the lower surface of the outer beam member with respect to the lower surface of the indoor beam member. Thus, even if a special structure is not applied to the structure below the outer beam member (that is, the structure below the outer beam member is basically a conventional structure), As described above, the “stripping” is eliminated or suppressed while the waterproof wall is sufficiently secured to maintain or secure the waterproof property.

  An external floor structure according to a third aspect of the present invention is characterized in that, in the first or second aspect of the present invention, the outer beam member is connected to the indoor beam member.

  In the external floor structure according to the third aspect of the present invention, the outer beam member is connected to the indoor beam member. For this reason, the indoor side beam member, and by extension, the building can bear the support strength of the outer beam member. For this reason, compared with the structure which made the structure containing an outer side beam member independent from the building containing an indoor side beam member, the support strength of the support structure of the outer side beam member except a building can be set low.

  The external floor structure according to a fourth aspect of the present invention is the outer floor structure according to any one of the first to third aspects, wherein an outer floor material is disposed on a side of the outer beam member. The outer floor member is supported by the outer beam member.

  In the external floor structure according to the fourth aspect of the present invention, since the outer floor material disposed on the side of the outer beam member is supported by the outer beam member, the outer floor material is disposed on the outer beam member. Compared to the above, the position of the upper surface of the outer flooring can be set lower. Thereby, the upper surface of the outer floor material can be set at a position lower than the upper surface of the indoor floor material, and the overflow of water onto the indoor floor material can be more effectively prevented or suppressed.

  Furthermore, when the waterproof wall is provided, the height of the waterproof wall can be sufficiently ensured without causing the upper end of the waterproof wall to protrude larger than the upper surface of the outer flooring. For this reason, since the position of the upper surface of the outer flooring can be set lower as described above, the height of the waterproof wall can be secured more sufficiently. For this reason, “stripping” that occurs when the upper end of the waterproof wall protrudes larger than the upper surface of the indoor flooring is more effectively eliminated or suppressed.

  The external floor structure according to the present invention described in claim 5 is the external floor structure according to any one of claims 1 to 4, wherein the outer floor material corresponds to an outer side of the indoor floor material. Waterproofing that is provided on the top and is directly or indirectly connected to the indoor flooring in a state where the upper end portion is substantially the same height as the upper surface of the indoor flooring or located below the upper surface. It is characterized by having a wall.

  According to the external floor structure of the present invention as set forth in claim 5, the upper end portion of the waterproof wall provided on the outer floor material is substantially the same height as the upper surface of the indoor floor material, or below the upper surface. However, since the upper surface of the outer floor material is set lower than the upper surface of the indoor floor material as described above, the waterproof wall for preventing water from flowing into the indoor side. Can be secured. Moreover, since the upper end of the waterproof wall is connected to the indoor floor material at the same position as the upper surface of the indoor floor material or below the upper surface, the waterproof wall is located above the upper surface of the indoor floor material. Does not protrude. This eliminates “stripping”.

  The external floor structure according to a sixth aspect of the present invention is the outer floor structure according to the first aspect of the present invention, wherein the height dimension is larger than the beam formation of the outer beam member and the interior side of the present invention is any one of the first to fifth aspects. A room-side connecting portion that is integrally connected to a predetermined portion of the indoor-side beam member that is less than or equal to the beam formation of the beam member, and a height dimension that is less than or equal to the beam formation of the outer-beam member. It is characterized by comprising a substantially L-shaped connecting member having an outer connecting part integrally connected to a predetermined part.

  According to the external floor structure according to the sixth aspect of the present invention, the outer beam member in which at least a part of the predetermined end portion is opposed to the indoor beam member in the horizontal direction is connected to the outer connecting portion of the connecting member at the predetermined portion. Are integrally connected. Further, the indoor side connecting portion of the connecting member is integrally connected to a predetermined portion of the indoor side beam member, whereby the outer beam member is integrally connected to the indoor side beam member via the connecting member.

  Here, in the connecting member, the height dimension of the indoor side connecting portion is set to be larger than the beam formation of the outer side beam member and less than the beam formation of the indoor side beam member, and the height dimension of the outer side beam member is set to the beam formation of the outer beam member. By being set to the following, it becomes a substantially L shape as a whole. Thereby, even if the height dimension of the connection part with the outer side connection part of an outer side beam member is smaller than the beam formation dimension of an indoor side beam member, an outer side connection part can be connected with an outer side beam member.

  According to a seventh aspect of the present invention, there is provided the external floor structure according to the first aspect of the present invention, wherein in the first aspect of the present invention, water can be passed from the upper side to the lower side on the outer floor material. And a deck material having an upper surface set at the same position as the upper surface of the indoor floor material.

  According to the external floor structure of the present invention as set forth in claim 7, the deck material is arranged on the outer floor material, but since the deck material can pass water from above to below, the water on the deck material is Fall on the outer flooring. Therefore, it is prevented or extremely effectively reduced that water flows on the deck material and enters the indoor side. Here, since the upper surface of the deck material arranged on the outer floor material is set at the same position as the upper surface of the indoor floor material, the level of the upper surface is substantially the same between the outer floor material side and the indoor floor material side. It becomes the same, and the level | step difference between an outer flooring side and an indoor flooring side is also eliminated.

  As described above, in the external floor structure according to the first aspect of the present invention, the waterproof property can be maintained or improved, and the waterproof wall is prevented from protruding greatly upward from the upper surface of the indoor flooring material. It can also be reduced, thereby eliminating or reducing “stripping”.

  In the external floor structure according to the second aspect of the present invention, the waterproof property can be maintained or improved, and “stripping” can be eliminated or reduced, and the structure below the outer beam member has a special structure. It may not be applied (that is, a conventional structure can be basically applied to a structure below the outer beam member).

  In the external floor structure according to the third aspect of the present invention, the support strength of the support structure of the outer beam member outside the building as compared with the structure in which the structure including the outer beam member is made independent from the building including the indoor side beam member. Can be set low.

  In the external floor structure according to the fourth aspect of the present invention, the waterproof property can be further maintained or improved, and the waterproof wall can be more effectively prevented or suppressed from protruding above the upper surface of the indoor flooring material. This can eliminate or suppress “stripping”.

  In the external floor structure according to the fifth aspect of the present invention, “stripping” due to the waterproof wall protruding upward from the upper surface of the indoor flooring material can be eliminated.

  In the external floor structure according to the sixth aspect of the present invention, even if the height dimension of the connecting portion of the outer beam member with the outer connecting portion is smaller than the beam forming dimension of the indoor beam member, the outer connecting member is connected to the outer beam member. The outer beam member can be integrally connected to the indoor beam member by connecting the portions. For this reason, the indoor side beam member used for the building to which the present invention is not applied (more specifically, the building not using the outer beam member constituting the present invention) can also be applied to the present invention. Can be achieved.

  In the external floor structure according to the seventh aspect of the present invention, the step between the outer floor material side and the indoor floor material side can be eliminated, and the access between the indoor floor material side and the external floor material side is further improved. .

<Configuration of the present embodiment>
FIG. 1 is a sectional view showing a configuration of a main part of a steel frame house 10 in which an external floor structure according to an embodiment of the present invention is applied to a second-floor balcony 11.

  As shown in this figure, the steel frame housing 10 includes floor beams 12 as indoor side beam members formed of steel or the like. The floor beam 12 includes a long flat plate-like web 14 that is elongated along one of the horizontal directions (the front side in FIG. 1 and the opposite depth direction).

  The width direction of the web 14 is along the vertical direction (the arrow UP direction and the arrow DOWN direction in FIG. 1), and a flange 16 is formed at the upper end (the end on the arrow UP direction side in FIG. 1). 1, the flange 18 is formed continuously in the longitudinal direction of the web 14. Each of the flanges 16 and 18 is formed into a long flat plate having a width direction along the thickness direction of the web 14, and is connected to the web 14 at a substantially central portion of each width direction. That is, the floor beam 12 constitutes so-called “H steel”.

  A floor material 20 as an indoor floor material is provided on the flange 16 on the indoor side of the web 14 of the floor beam 12, and the floor beam 12 is located on the outdoor side of the floor material 20 (in the direction of the arrow OUT in FIG. ) And its vicinity are supported from below. The flooring 20 is formed, for example, by molding cellular concrete such as ALC into a flat plate shape. On the floor material 20 is placed a floor plate 22 in which two flat plates that are sufficiently thinner than the floor material 20 are stacked. The lower end portion of the flat level sash 24 is fixed to the end portion of the floor plate 22 on the outdoor side (arrow OUT direction side in FIG. 1) by screws 26.

  In the present embodiment, the floor plate 22 has a configuration in which two flat plates are stacked, but the floor plate 22 may be configured by a single flat plate. Further, in the present embodiment, the screw 26 is applied as a connecting member for fixing the flat level sash 24 to the floor plate 22, but the connecting member for fixing the flat level sash 24 to the floor plate 22 is limited to the screw 26. Instead, various other means may be applied, and as an example, a fastener may be applied as the connecting member.

  On the other hand, a floor beam 28 as an external beam member is arranged on the outdoor side of the floor beam 12 (arrow OUT direction side in FIG. 1). The floor beam 28 includes a longitudinal web 30 along a direction (arrow IN direction and arrow OUT direction in FIG. 1) orthogonal to the longitudinal direction of the floor beam 12 in the horizontal direction. The web 30 includes a long flat web 30 that is formed in the width direction along the same vertical direction as the width direction of the web 14. A flange 32 is formed at the upper end of the web 30, and a flange 34 is formed continuously at the lower end of the web 30 in the longitudinal direction of the web 30.

  Each of the flanges 32 and 34 is formed into a long flat plate having a width direction along the thickness direction of the web 30, and is connected to the web 30 at a substantially central portion of each width direction. That is, the floor beam 28 constitutes “H steel” similar to the floor beam 12. However, as shown in FIG. 1, the web 30 of the floor beam 28 is shorter in width (vertical dimension) than the web 14 of the floor beam 12. For this reason, the beam formation of the floor beam 28 is lower than the beam formation of the floor beam 12. Corresponding to the floor beam 28, the web 14 of the floor beam 12 is provided with a joint 36 as a connecting member.

  The joint 36 includes a connecting portion 38 as an indoor side connecting portion whose height dimension is equal to or smaller than the width dimension of the web 14 and larger than the width dimension of the web 30. The connecting portion 38 enters between the flange 16 and the flange 18 and is integrally joined to the web 14 by fastening means such as bolts or welding. A connecting portion 40 as an outer connecting portion is formed continuously from the outdoor end of the connecting portion 38. The connecting portion 40 has the lower end at the same position as the lower end of the connecting portion 38, but the upper end is positioned below the upper end of the connecting portion 38 because the height dimension is shorter than the width dimension (vertical dimension) of the web 30. For this reason, the joint 36 is substantially L-shaped when viewed from the front.

  The connecting portion 40 enters between the flange 32 and the flange 34 from the end of the floor beam 28 on the indoor side, and is integrally joined to the web 30 by fastening means such as bolts or welding. Thereby, the floor beam 28 is integrally connected to the floor beam 12 in a state where the lower surface of the flange 34 and the lower surface of the flange 18 are at the same position.

  In the present embodiment, the connecting portion 40 constituting the joint 36 as the connecting member is configured to enter between the flange 32 and the flange 34 from the indoor end of the floor beam 28. A joint that does not include the connecting portion 40 that enters between the flange 32 and the flange 34 may be applied as the connecting member.

  A support angle 42 as a support is provided between the flange 32 and the flange 34. As shown in FIG. 3, the support angle 42 includes a fixing portion 44. The fixing portion 44 is a flat plate portion whose longitudinal direction is parallel to the web 30 along the longitudinal direction of the web 30, and is integrated with the web 30 inside the longitudinal ends of the web 30 by fastening means such as bolts or welding. It is fixed to. A support portion 46 extends from the lower end portion of the fixing portion 44 toward the side opposite to the web 30. The support portion 46 has a flat plate shape parallel to the flanges 34 and 36. A plurality of floor beams 28 configured as described above are arranged at predetermined intervals along the longitudinal direction of the floor beam 12. In addition, a larger number of floor beams 28 are applied in the present steel framed housing 10 than the members corresponding to the floor beams 28 in the conventional steel framed housing, and the beam formation of the floor beam 28 than the floor beam 12 is applied. This compensates for the decrease in strength due to the lowering of.

  On the other hand, as shown in FIG. 2, a floor beam 48 is provided on the side of the end of the floor beam 28 opposite to the floor beam 12. The floor beam 48 is a so-called “H steel” having the same configuration as the floor beam 12, and is arranged in parallel to the floor beam 12, and the web 30 of the floor beam 28 is integrally connected through the joint 36. Yes. The flange 16 of the floor beam 48 is provided with a mounting angle 50 having an L-shaped cross section. The mounting angle 50 is fixed to the flange 16 by a bolt 52 on the indoor side of the web 14 of the floor beam 48. A lower end portion of the wall base plate 54 is fixed to the mounting angle 50 by a bolt 56. A wall plate 57 is fixed to the indoor side surface of the wall base plate 54.

  On the other hand, a mounting angle 58 having an L-shaped cross section is fixed to the flange 16 of the floor beam 48 by a bolt 60 outside the web 14 of the floor beam 48. An upper end portion of the wall base plate 62 constituting the first floor portion of the steel frame housing 10 is fixed to the mounting angle 58 with a bolt 64. A wall plate 66 is fixed to the outdoor surface of the wall base plate 62.

In the present embodiment, the upper end portion of the wall base plate 62 constituting the first floor portion of the steel frame housing 10 is fixed to the mounting angle 58 with the bolt 64. For example, instead of the bolt 64, The wall base plate 62 may be fixed to the mounting angle 58 by welding.

  Further, a mounting plate 68 is fixed to the mounting angle 58 by welding or the like. A lower end portion of the wall base plate 70 corresponding to the wall base plate 54 and the wall plate 57 is fixed to the mounting plate 68 by bolts 72. Further, a wall plate 74 is fixed to the outdoor side of the wall base plate 70.

  On the other hand, a floor material 76 as an outer floor material is provided between the floor beams 28 arranged at predetermined intervals in the longitudinal direction of the floor beam 12. The floor material 76 is formed, for example, by molding cellular concrete such as ALC into a flat plate shape, and the thickness dimension is equal to or less than the length along the vertical direction from the upper surface of the support portion 46 to the upper surface of the flange 32. (In this embodiment, the length is the same as the length along the vertical direction from the upper surface of the support portion 46 to the upper surface of the flange 32).

  The floor material 76 is disposed between the floor beams 28 adjacent to each other along the longitudinal direction of the floor beam 12, and the floor beams 12 are supported on the support portions 46 of the support angles 42 respectively provided on the adjacent floor beams 28. Both ends of the floor material 76 along the longitudinal direction of the material are placed, and thereby the floor material 76 is supported by the support portion 46, and by extension, the floor beam 28.

  Further, a heat insulating material 78 is disposed on the floor material 76. The heat insulating material 78 is formed in a plate shape whose upper surface is inclined so that the thickness dimension gradually decreases toward the outdoor side, and the upper surface is covered with a waterproof sheet 80. A waterproof wall 82 is provided on the heat insulating material 78 on the side of the outer peripheral portion of the heat insulating material 78.

  On the indoor side of the floor material 76, a support body 84 that is long in the longitudinal direction of the floor beam 12 and has a rectangular tubular section is fixed to the flange 16 of the floor beam 12 via the support body 84. The flat level sash 24 is supported on the wall 82 from the lower side, and the upper end side of the waterproof wall 82 located on the lower side of the flat level sash 24 is fixed and held on the support body 84 on the indoor side. .

A plurality of support shafts 86 are appropriately disposed on the waterproof sheet 80. A deck plate 88 as a deck is provided at the upper end of the support shaft 86.
The deck plate 88 is formed by arranging a plurality of narrow plate-like plates extending in the longitudinal direction of the floor beam 12 in the longitudinal direction of the floor beam 28, the upper surface of the plate being horizontal and the upper surface of the floor plate 22. It is supported directly or indirectly by the support shaft 86 at the same position.

<Operation and effect of the present embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the steel frame house 10 to which this embodiment having the above configuration is applied, the upper surface of the flange 32 constituting the floor beam 28 is set at a position lower than the upper surface of the flange 16 constituting the floor beam 12. Moreover, the beam formation of the floor beam 28 is lower than the beam formation of the floor beam 12. Moreover, the floor material 76 is not disposed on the flange 32 constituting the floor beam 28 but on the side of the web 14 constituting the floor beam 28. Furthermore, the thickness dimension of the floor material 76 is set to be equal to or less than the length along the vertical direction from the upper surface of the support portion 46 to the upper surface of the flange 32, so that the floor material 76 supported by the support portion 46 is The upper surface is the same position as the upper surface of the flange 32 of the floor beam 28 or is lower than the upper surface of the flange 32.

  From the above, the position of the upper surface of the floor material 76 is sufficiently lower than the upper surface of the floor material 20 disposed on the flange 16 of the floor beam 12. For this reason, even if the position of the upper end portion of the waterproof wall 82 provided around the heat insulating material 78 on the floor material 76 is set to be equal to or lower than the position of the upper surface of the floor material 20, the height dimension of the waterproof wall 82 is sufficient. It can be secured. Thereby, even if water flows on the waterproof sheet 80 on the indoor side, the water is blocked by the waterproof wall 82 and water can be reliably prevented from entering the indoor side, and the water flowing on the waterproof sheet 80 can be prevented. Overflow onto the floor plate 22 can be prevented or effectively suppressed.

  Further, not only can such an extremely effective flood prevention effect be obtained, but as described above, the position of the upper end portion of the waterproof wall 82 is set to be equal to or lower than the position of the upper surface of the flooring 20, The upper end portion of the waterproof wall 82 does not protrude upward from the upper surface of the flooring 20.

  For this reason, although the waterproof wall 82 is provided, the inner peripheral lower part of the flat level sash 24 may not be positioned above the floor plate 22. Moreover, the upper surface of the deck plate 88 supported by the support shaft 86 on the waterproof sheet 80 is a substantial floor surface of the second-floor balcony 11. As described above, the deck plate 88 is supported by the support shaft 86 and separated from the waterproof sheet 80, so that the upper surface thereof is set at the same position as the upper surface of the floor plate 22.

  From the above, the upper surface of the deck plate 88, the inner peripheral lower portion of the flat level sash 24, and the upper surface of the floor plate 22 are in a flat state, and so-called “stripping” and “step” are eliminated. Thereby, the access between the floor board 22 side and the deck plate 88 side is improved, and the floor board 22 and the deck plate 88 can be easily moved back and forth.

  On the other hand, the beam formation of the floor beam 28 is lower than the beam formation of the floor beam 12. However, the joint 36 for connecting the floor beam 28 to the floor beam 12 is substantially L-shaped in a front view as described above, and the height dimension of each connecting portion 38, 40 is the floor beam 12 or the flange 32 of the floor beam 28. And the flange 18 are set so as to be inserted. Therefore, the web 30 constituting the lower surface of the web 14 constituting the floor beam 12 and the web 30 constituting the floor beam 28, even without specially processing the floor beam 12 or using a steel material having a special structure for the floor beam 12. The floor beam 28 can be integrally connected to the floor beam 12 with the lower surface of the same in the same position.

  Moreover, since the beam formation of the floor beam 28 is lower than the beam formation of the floor beam 12, the position of the upper surface of the flange 32 constituting the floor beam 28 is sufficiently higher than the upper surface of the flange 16 constituting the floor beam 12. In lowering, it is not necessary to lower the position of the lower surface of the flange 32 constituting the floor beam 28 with respect to the lower surface of the flange 18 constituting the floor beam 12. Thereby, the structure of the 1st floor part of the steel frame housing 10 below the floor beam 28 can basically apply a conventional structure. Such a floor beam 12 can also be applied to a so-called steel house.

  In the present embodiment, the floor beams 12 and 28 formed of “H steel” are applied as the indoor side beam member and the outer side beam member. The general structure and material are not limited to such “H steel”, and the interior side beam member and the outside beam member are made of steel material having a different cross-sectional shape, or other than steel material, for example, wood. May be.

  In addition, this Embodiment was the structure which applied this invention to the 2nd floor balcony 11 of the steel frame housing 10. FIG. However, the present invention is not limited to the above configuration, and can be applied to an external floor structure of a general building.

It is sectional drawing to which the principal part of the steel frame housing which applied the external floor structure which concerns on one embodiment of this invention to the 2nd floor balcony was expanded. It is sectional drawing to which the eaves side of the 2nd floor balcony was expanded. FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 1.

Explanation of symbols

12 Floor beams (indoor beam members)
20 Flooring (indoor flooring)
28 Floor beams (outer beam members)
36 joints
38 connecting part (indoor side connecting part)
40 connecting part (outer connecting part)
76 Flooring (outer flooring)
82 Waterproof wall 88 Deck plate (deck)

Claims (7)

  An external floor structure comprising an outer beam member having an upper surface that is lower in the vertical direction than an upper surface of an indoor beam member that supports an indoor floor material on the indoor side of a building.   The external floor structure according to claim 1, wherein the beam formation of the outer beam member is set lower than the beam formation of the indoor side beam member.   The external floor structure according to claim 1 or 2, wherein the outer beam member is connected to the indoor beam member.   The outer floor structure according to any one of claims 1 to 3, wherein an outer floor material is disposed on a side of the outer beam member and the outer beam member is supported by the outer beam member. .   A state in which the upper end portion is provided on the outer floor material corresponding to the outer side of the indoor floor material, and the upper end portion is positioned at substantially the same height as the upper surface of the indoor floor material or below the upper surface. The exterior floor structure according to any one of claims 1 to 4, further comprising a waterproof wall that is directly or indirectly connected to the indoor floor material. An indoor side coupling portion having a height dimension greater than that of the outer beam member and less than that of the indoor beam member and integrally coupled to a predetermined portion of the indoor beam member;
An outer connecting portion having a height dimension equal to or less than a beam formation of the outer beam member and integrally connected to a predetermined portion of the outer beam member;
The external floor structure according to any one of claims 1 to 5, further comprising a substantially L-shaped connecting member having a shape.   2. The apparatus according to claim 1, further comprising: a deck material that is capable of passing water from above to below and is disposed on the external flooring and having an upper surface set at the same position as the upper surface of the indoor flooring. The external floor structure according to claim 6.

Images