JP2020165246A - Building construction method - Google Patents

Abstract

To provide a building construction method that can efficiently construct a building having an exterior wall formed of multiple exterior wall surface members arranged vertically and efficiently close a temporary opening disposed on the exterior wall from indoor side.SOLUTION: This building construction method is a construction method of a building having an exterior wall formed of multiple exterior wall surface members 51 arranged vertically on the outdoor side of a skeleton 7 and includes a process to form a temporary opening so that the exterior wall surface member 51 and substrate materials 52, 53 do not exist at the temporary opening and a process to fit a post-fitting exterior wall surface member 502 that is fitted to the temporary opening by post-fitting into the temporary opening from the indoor side of the skeleton 7 by changing a height position of the upper exterior wall surface member 51 by a fastener 4 to change the height position of the upper exterior wall surface member 51 positioned on an upper side of the post-fitting exterior wall surface member 502.SELECTED DRAWING: Figure 7

Description

The present invention relates to a method of constructing a building having an outer wall in which a plurality of outer wall materials are arranged one above the other.

Patent Document 1 discloses a large-sized outer wall panel and a structure for attaching the large-sized outer wall panel to the frame of a building. The large-format outer wall panel includes a panel frame and a plurality of vertically elongated outer wall materials including a heat insulating material attached to the panel frame. Further, the panel frame has an outer peripheral frame portion in which the left and right vertical frame members and the horizontal frame members at the upper and lower ends are assembled in a rectangular shape, and the outer peripheral frame portions are arranged at intervals in the horizontal width direction so that the upper and lower ends are vertically arranged. It consists of a plurality of vertical furring strips joined to the horizontal frame material of.

Further, Patent Document 2 discloses a curing device capable of performing construction of a building opening by installing it at each building opening without forming a scaffold.

Japanese Unexamined Patent Publication No. 2016-113839 Japanese Unexamined Patent Publication No. 2006-152695

However, none of the above patent documents discloses an efficient construction method for a building having an outer wall in which a plurality of outer wall materials are arranged one above the other. In addition, we do not disclose how to close the temporary opening provided on the outer wall.

In view of the above circumstances, the present invention can efficiently construct a building having an outer wall in which a plurality of outer wall materials are arranged one above the other, and can more efficiently close a temporary opening provided in the outer wall than the indoor side. The challenge is to provide a construction method for buildings that can be constructed.

The building construction method of the present invention is a building construction method in which an outer wall in which a plurality of outer wall materials are arranged vertically is provided on the outdoor side of the skeleton in order to solve the above problems, and the outer wall material and the base are provided. The step of forming a temporary opening in which no material is present on the outer wall, and the height position of the upper outer wall material located on the upper side of the rear-fitting outer wall material to be rear-fitted in the temporary opening. It is characterized by including a step of changing the height position of the upper outer wall surface material by a changing means for raising and lowering, and fitting the temporary opening into the temporary opening from the indoor side of the skeleton.

According to the above method, the rear-fitting outer wall material to be rear-fitted into the temporary opening is moved to the upper side by an elevating means for changing the height position of the upper outer wall material located above the rear-fitting outer wall material. By changing the height position of the outer wall material upward, even if the fitting shape of the upper and lower outer wall materials is complicated, it is possible to fit the temporary opening into the temporary opening from the indoor side of the skeleton. At the opening, the outer wall surface can be formed from the indoor side.

When the rear fitting outer wall material is used as the rear fitting outer wall material in which engaging portions are formed on each of the lower side and the upper side of the rear fitting outer wall material, and the rear fitting outer wall material is fitted into the temporary opening. In addition, the engaging portions on the lower side and the upper side are engaged with the upper side of the lower outer wall material located below the rear fitting outer wall material and the lower side of the upper outer wall material. You may let me. According to this, the engagement between the rear-fitting outer wall material and the outer wall material located on the lower side and the upper side can be performed in the same manner as the engagement between the other outer wall materials.

The elevating means may be a fixing mechanism portion capable of adjusting the height of the upper outer wall surface material and fixing to the skeleton. The height adjustment range of the fixing mechanism portion may be larger than that of other fixing mechanism portions.

As the outer wall material located above the temporary opening, an outer wall material fixed to the base material connected to the skeleton side at two locations above and below the back surface may be used. According to this, in a state where the temporary opening is used, that is, in a state where the outer wall material on the upper side of the temporary opening and the outer wall material on the lower side of the temporary opening are not connected by the base material, the upper side of the temporary opening. The base material for fixing the outer wall surface material located in is connected to the skeleton side at two places above and below. As a result, it is possible to reduce the rattling of the outer wall material on the upper side of the temporary opening when the temporary opening is used.

Of the above two connections, at least the lower side is connected by engaging the rising member provided on the indoor side of the upper outer wall material with the skeleton side. The height of the upper member is preferably a height at which the engagement is maintained even when the height position of the upper outer wall material is changed. According to this, even when the height position of the upper outer wall material is raised or lowered, the engagement is maintained, and the rattling of the upper outer wall material of the temporary opening can be reduced. In addition, the connection of the above two places may be a connection having the same configuration.

A second structure in which a plurality of outer wall materials are arranged one above the other and can be lifted as a whole is used, and is connected to the base materials of the upper and lower outer wall materials across a temporary opening in the structure during construction. The base material is removed after the structure at the time of construction is fixed to the skeleton of the building to obtain the temporary opening, while the rear fitting outer wall material is attached to the temporary opening from the indoor side of the skeleton. The base material of the outer wall material may be connected to the base material of the upper and lower outer wall materials by using the second base material. According to this, the second base material can be used without waste.

According to the present invention, there is an effect that the outer wall surface can be formed from the indoor side with respect to the temporary opening of the outer wall obtained by the absence of the outer wall surface material and the base material.

It is a rear view which showed the structure at the time of construction of the outer wall panel used in the construction method of the building which concerns on embodiment of this invention. FIG. 1A is an explanatory view showing a cross section of an upper part and a lower part of the outer wall material in the outer wall panel of FIG. 1, and FIG. 1B shows a fitting portion of the outer wall material arranged vertically in FIG. It is explanatory drawing. It is a front view which showed an example of the groundwork pedestal which assembles the structure at the time of construction of the outer wall panel of FIG. 1 on the ground. It is explanatory drawing which showed the state which attached the structure at the time of construction of the outer wall panel of FIG. 1 to the skeleton of a building. It is explanatory drawing which showed the state which the structure at the time of construction of the outer wall panel of FIG. 1 was lifted by the balance to attach to the frame of a building. It is a figure which shows the construction method of the building which concerns on embodiment of this invention, and is the explanatory view which showed the attachment to the temporary opening of the rear fitting outer wall material. It is a figure which shows the process which follows the process of FIG. 6, and is explanatory drawing which showed the attachment to the temporary opening of the rear fitting outer wall material. It is a figure which shows the construction method of the building which concerns on embodiment of this invention, and is the perspective view which showed the fastener which fixes the outer wall material on the upper side of the rear-fitting outer wall material to a skeleton.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the structure 5 at the time of construction of the outer wall panel used in the construction method of the building according to this embodiment is a first base material (a first base material) which is a base material in which a plurality of horizontally long outer wall materials 51 are arranged vertically. It has a structure that can be attached to the frame of a building in an integrated form by being connected to each other by a vertical furring strip) 52. In the example shown in FIG. 1, six first base materials 52 are provided, and each first base material 52 is made of an open cross-section steel material such as lip channel steel or a closed cross-section steel material such as a square steel pipe.

The outer wall surface material 51 is, for example, a metal sandwich panel in which a noncombustible heat insulating material 51a is sandwiched between steel plates 51b and 51c, as shown in FIGS. 2A and 2B. When the two outer wall materials 51 are arranged one above the other, the outer wall material 51 located in the upper stage is formed in two recesses 51d formed in the upper end surface of the outer wall material 51 located in the lower stage in the horizontal direction. By fitting the two convex portions 51e formed on the lower end surface in the lateral width direction, the upper and lower outer wall surface members 51 are combined so as not to be displaced from each other in the out-of-plane direction.

Further, for example, by using the groundwork frame 1 shown in FIG. 3, the outer wall panel in which the plurality of outer wall materials 51 are arranged vertically and connected by the first base material 52 is attached to the frame of the building to which the outer wall panel is attached. It can be assembled in a place different from the outer wall mounting location. The ground frame 1 is formed by, for example, vertically and horizontally assembling a plurality of columnar members 11 and beam-shaped members 12, but the structure thereof is not limited to that shown in FIG.

After setting the first base material 52 on the groundwork stand 1, the operator sets the outer wall material 51, screwes a screw or the like into the upper side of the set outer wall material 51, and then screwes the outer wall material 51 into the set. Is fixed to the first base material 52 set earlier. By repeating this work, the structure 5 at the time of construction of the outer wall panel is produced.

In the structure 5 at the time of construction of the outer wall panel, for example, the first base material 52 is divided and separated vertically at a place where the outer wall material 51 on the second stage from the top should exist, and the outer wall surface at the uppermost position is separated. The material 51 is attached to the upper first base material 52, and the outer wall material 51 and the first base material 52, which are the second steps from the top, are not attached, and all the outer wall materials 51 are attached to the third and lower steps from the top. Is attached to the lower first base material 52. That is, the structure 5 at the time of construction of the outer wall panel of this example has a structure in which the outer wall surface material 51 and the first base material 52 do not exist only in the first step, which is the second step from the top.

Then, as shown in FIG. 1, the structure 5 at the time of construction of the outer wall panel is, for example, a second base material having a vertical length from the outer wall material 51 at the uppermost position to the outer wall material 51 at the sixth stage. It has 53. The second base material 53 is connected to the first base material 52 located above and below the position where the first base material 52 does not exist (a place where the first base material 52 is temporarily opened). The second base material 53 can be attached to the first base material 52 by using the groundwork frame 1. The second base material 53 is detachably attached to the first base material 52, and can be temporarily removed after the structure 5 at the time of construction is attached to the skeleton 7 of the building.

The first base material 52 is made of, for example, channel steel having two facing surface portions and a closed surface portion connecting the facing surface portions, and the outer wall surface material 51 is screw-fixed on one side of the facing surface portions.

Further, as shown in FIG. 4, the skeleton 7 of the building to which the structure 5 at the time of construction of the outer wall panel is attached includes, for example, a roof beam 71, a windproof beam 72, a floor beam 73, etc. on which the roof 7A is supported. There is. Further, the connecting member 71a is fixed to the roof beam 71 at a predetermined pitch, and the roof side windproof beam 72A is provided so as to penetrate the connecting member 71a. In the installation of the structure 5 at the time of construction of the outer wall panel to the building skeleton 7, for example, the other side of the facing surface portion of the first base material 52 is the roof side windproof beam 72A in the building skeleton 7 and the windproof. It is fixed to the beam 72, the floor beam 73, etc. by using metal fittings such as an L angle, fixing bolts, height adjusting bolts, and the like.

Further, for example, the second base material 53 is also made of channel steel, and the closed surface portion thereof is made to face the closed surface portion of the first base material 52, so that the second base material 53 is attached to the lateral position of the first base material 52. For example, bolt insertion holes are formed in the closed surface portion at a predetermined pitch, and the second base material 53 is attached to and detached from the first base material 52 by the bolts and nuts sewn through the bolt insertion holes. It can be attached freely. Even when the first base material 52 and the second base material 53 are square steel pipes having a closed cross-sectional shape, the same bolt mounting structure can be used. Further, the above-mentioned structure for making it removable is not limited to the structure using bolts and nuts.

Further, as shown in FIG. 5, the structure 5 at the time of construction of the outer wall panel can be lifted by using the balance 8. The balance 8 is provided with a fixing portion 81 on one side and a counterweight 82 on the other side. The fixing portion 81 is fixed to the first base material 52, the second base material 53, the outer wall material 51, or a member temporarily fixed to the first base material 52, the second base material 53, or the outer wall material 51 of the structure 5 when the outer wall panel is constructed. The balance 8 is suspended by a suspension source 83 such as a crane.

In the construction of the building, the structure 5 at the time of construction of the outer wall panel lifted as described above is attached to the skeleton 7 of the building by the first base material 52. More specifically, the upper first base material 52 in the structure 5 at the time of construction of the outer wall panel is fixed to the roof side windproof beam 72A, and the lower first base material 52 is fixed to the windproof beam 72.

As described above, after fixing the first base material 52 in the outer wall surface material 51 to the skeleton 7 of the building, the second base material 53 is removed from the first base material 52. Since the first base material 52 is fixed to the skeleton 7 side as described above, even if the second base material 53 is removed from the first base material 52, the outer wall surface material 51 will come off from the skeleton 7. There is no. Then, by removing the second base material 53 from the first base material 52 in this way, the temporary opening in which the second base material 53 does not exist at the place where the outer wall surface material 51 does not exist, that is, the base material. Form an unobstructed opening that can be used during construction. For use during construction, for example, the scaffold can be taken out from the indoor side.

The first base material 52 in the outer wall surface material 51 located above the temporary opening is shown in FIG. 6 when the temporary opening is used, that is, when the second base material 53 is removed from the first base material 52. As shown in the above, the building is connected to the skeleton 7 side at two points above and below the indoor surface. In this embodiment, the upper side of the indoor surface of the first base material 52 is connected to the upper side of the windproof beam 72 (the roof side windproof beam 72A may be used; the same applies hereinafter) by the fastener 4, and the first base material 52 is connected by the clip 55. The lower side of the indoor surface of the material 52 is connected to the lower side of the windproof beam 72.

The clip 55 is, for example, a short, vertically long member (rising member) 55a, a screw 55b for fastening the member 55a to the indoor surface of the outer wall surface material 51, and the member 55a of the outer wall surface material 51. It is provided with a spacer 55c that separates it from the indoor surface. The screw 55b is provided on the lower side of the member 55a, and if the screw 55b is loosened, the member 55a can be hung downward.

The clip 55 projects upward from the indoor side surface of the first base material 52 with the screw 55b tightened. A vertical piece of an L angle 72a fixed to the lower surface of the windproof beam 72 engages between the clip 55 and the indoor surface of the first base material 52. More specifically, the connection by the clip 55 is performed by sandwiching the vertical piece of the L angle 72a between the indoor surface of the upper outer wall material 51 and the member 55a of the clip 55, and the height of the member 55a is increased. The height is such that the engagement by the pinching is maintained even when the height position of the upper outer wall material 51 is changed.

The clip 55 can be fastened with the screw 55b after the structure 5 at the time of construction is lifted and the fastener 4 is engaged with the skeleton 7 side. Alternatively, in a state where the screw 55b is loosened and the member 55a is hung downward, the structure 5 at the time of construction can be lifted and the fastener 4 can be engaged with the skeleton 7 side.

Next, attachment of the outer wall surface material to the temporary opening will be described with reference to FIGS. 6 and 7. The amount of protrusion of the outer wall material with respect to the base material in FIGS. 6 and 7 above, the position of the windproof beam, the shape of the steel material, and the like are examples, and the outer wall material with respect to the base material in FIGS. 4 and 5 used above is an example. The amount of protrusion, the position of the windproof beam, the shape of the steel material, etc. are also examples. In these figures, the amount of protrusion of the outer wall surface material with respect to the base material, the position of the windproof beam, the shape of the steel material, and the like are not necessarily the same.

In attaching the outer wall material to the temporary opening, the rear-fitting outer wall material 502 to be rear-fitted to the temporary opening is attached. Like the other outer wall material 51, the rear-fitting outer wall material 502 is provided with a recess 51d, which is a lower engaging portion, on the lower side of the rear-fitting outer wall material 502, and is provided on the upper side and on the upper side. A convex portion 51e, which is an engaging portion that engages with the lower side of the outer wall surface material 51 located, is provided.

When the rear fitting outer wall material 502 is fitted into the temporary opening, a fixing mechanism portion serving as an elevating means for changing the height position of the upper outer wall material 51 located above the rear fitting outer wall material 502 is provided. It is used to change the height position of the upper outer wall surface material 51 and fit it into the temporary opening from the indoor side of the skeleton 7. In addition to the fixing mechanism portion, an elevating means may be provided.

More specifically, when the rear fitting outer wall material 502 is fitted into the temporary opening, the height of the temporary opening is made higher than the height of the rear fitting outer wall material 502 as shown in FIG. In addition, the fastener 4 constituting the fixing mechanism portion is used to lift the outer wall surface material 51 on the upper side of the rear-fitting outer wall surface material 502. The temporary opening is not limited to being used at the height in the initial state determined by the structure 5 at the time of construction, and can be used even when the height of the temporary opening is higher than the height in the initial state.

The rear-fitting outer wall surface material 502 can be lifted when the rear-fitting outer wall surface material 502 is fitted, for example, by using a lifting machine arranged on the indoor side of the skeleton 7.

Then, in fitting the rear fitting outer wall surface material 502 into the temporary opening, as shown in FIG. 7, the rear fitting outer wall surface is fitted into the recess 51d which is the engaging portion on the lower side of the rear fitting outer wall material 502. The convex portion 51e on the upper side of the outer wall surface material 51 located below the material 502 is engaged.

Next, the fastener 4 is used to lower the upper outer wall surface material 51. By this lowering operation, the convex portion 51e, which is the engaging portion on the upper side of the rear fitting outer wall material 502, engages with the concave portion 51d on the lower side of the outer wall material 51 located above the rear fitting outer wall material 502. It fits.

Then, in this way, after fitting the rear-fitting outer wall surface material 502 into the temporary opening, the second base material 53 once removed is applied to the first base material 52 of the rear-fitting outer wall material 502. The second base material 53 is further connected to the first base material 52 of the upper and lower outer wall surface materials 51.

As shown in FIG. 8, the fastener 4 is provided in a vertical surface portion 41 having a stepped shape or by arranging spacers on an indoor surface to form a step, and a lower side of the vertical surface portion 41. It is provided with a horizontal plate portion 42. The horizontal width of the horizontal plate portion 42 is wider than the horizontal width of the vertical surface portion 41. A substantially triangular rib portion 43 is provided between the vertical surface portion 41 and the horizontal plate portion 42 on each edge side of the vertical surface portion 41 by welding or the like.

When the upper surface portion of the vertical surface portion 41 is attached in contact with the first base material 52, the lower surface portion is separated from the first base material 52 to form a gap having a constant width with the first base material 52. To do. An insertion hole is formed in the upper surface portion in the horizontal direction, and a screw portion of a bolt 41a provided so as to project horizontally from the inside of the first base material 52 is passed through the insertion hole through the screw portion. By screwing the nut 41b, the fastener 4 can be fixed to the first base material 52.

Further, a receiving portion 6 constituting the fixing mechanism portion is provided on the windproof beam 72. The receiving portion 6 includes a load receiving plate 61 made of a steel material or the like, and an L angle 62 is provided on the load receiving plate 61 on the outdoor side edge of the windproof beam 72. The L angle 62 is provided with its horizontal piece 62a in contact with the upper surface of the load receiving plate 61. Further, the rising piece 62b of the L angle 62 is located on the outdoor side. The structure 5 at the time of construction is attached to the building by inserting the rising piece portion 62b into the gap formed by the vertical surface portion 41.

A pin insertion hole is formed at the center position (between the rib portions 43) of the horizontal plate portion 42 of the fastener 4. Further, a screw hole is formed at one end side position of the horizontal plate portion 42, and a load receiving bolt 42c having a rounded tip is screwed into the screw hole from above. A lock nut and a washer are attached to the load receiving bolt 42c. Further, a protruding screw insertion hole is formed at another end side position of the horizontal plate portion 42.

A positioning pin 61a and a protruding screw 61b are erected on the load receiving plate 61. The protruding screw 61b is fixed to the load receiving plate 61 by welding with the screw portion facing upward. The positioning pin 61a is provided at a position corresponding to the pin insertion hole of the horizontal plate portion 42, and the protruding screw 61b is provided at a position corresponding to the protruding screw insertion hole of the horizontal plate portion 42. There is.

The horizontal piece portion 62a of the L angle 62 is formed with a through hole through which the positioning pin 61a and the protruding screw 61b pass. On the other hand, no through hole is formed in the portion corresponding to the load receiving bolt 42c, and the tip of the load receiving bolt 42c hits the upper surface of the horizontal plate portion 42. By screwing the nut 42e into the protruding screw 61b, a downward force can be applied to the horizontal plate portion 42 to maintain the adjusted height.

Further, the fixing mechanism portion for fixing the outer wall surface material 51 located above the rear-fitting outer wall surface material 502 to the skeleton side is higher than the fixing mechanism portion for fixing the other outer wall surface material 51 to the skeleton side. The adjustment range is increased. In this embodiment, the load receiving bolt 42c, the positioning pin 61a, and the protruding screw 61b in the fixing mechanism portion for fixing the outer wall surface material 51 located above the rear-fitting outer wall surface material 502 to the skeleton side are other. It is made longer than the load receiving bolt 42c, the positioning pin 61a, and the protruding screw 61b in the fixing mechanism portion for fixing the outer wall surface member 51 to the skeleton side.

According to the above construction method, the rear-fitting outer wall surface material 502 to be rear-fitted into the temporary opening is raised and lowered to change the height position of the upper outer wall surface material 51 located above the rear-fitting outer wall material 502. The fastener 4 and the receiving portion 6 constituting the fixing mechanism portion, which is the means, change the height position of the upper outer wall surface material 51 and fit the temporary opening into the temporary opening from the indoor side of the skeleton 7. The outer wall surface can be formed from the indoor side at the temporary opening.

As the rear-fitting outer wall surface material 502, an outer wall surface material having engaging portions (recessed portion 51d, convex portion 51e) formed on each of the lower side and the upper side side is used, and the rear-fitting outer wall surface material 502 is provided in the temporary opening. When fitting, the engaging portions on the lower side and the upper side are engaged with each other on the upper side of the lower outer wall material located below the rear fitting outer wall material and the lower side of the upper outer wall material. The rear-fitting outer wall material 502 and the outer wall material 51 located on the lower side and the upper side can be engaged in the same manner as the engagement between the other outer wall materials 51.

As the outer wall material located above the temporary opening, the outer wall material 51 connected to the skeleton side at two locations above and below the indoor surface may be used. According to this, the state in which the temporary opening is used, That is, in a state where the outer wall material 51 on the upper side of the temporary opening and the outer wall material 51 on the lower side of the temporary opening are not connected by the first base material 52 and the second base material 53, the position is above the temporary opening. The outer wall surface material 51 to be used can be connected to the skeleton 7 side at the above two points above and below. Thereby, in the state of using the temporary opening, the rattling of the outer wall surface material 51 on the upper side of the temporary opening can be reduced.

In the lower connection of the two connections, the member (rising member) 55a of the clip 55 that rises upward provided on the indoor side of the upper outer wall material 51 is connected to the skeleton 7 side (L). It is preferable that the member 55a is engaged with the vertical piece of the angle 72a) so that the engagement is maintained even when the height position of the upper outer wall surface member 51 is changed. According to this, even when the height position of the upper outer wall material 51 is raised or lowered, the engagement is maintained, and the rattling of the upper outer wall material 51 of the temporary opening can be reduced.

Further, when the rear-fitting outer wall material 502 is attached to the temporary opening from the indoor side of the skeleton 7 by using the above-mentioned construction structure 5, the first base material 52 of the rear-fitting outer wall material 502 is used. If the two base materials 53 are connected to the first base material 52 of the upper and lower outer wall surface materials 51, the second base material 53 can be used without waste.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to those of the illustrated embodiments. It is possible to make various modifications and modifications to the illustrated embodiment within the same range as the present invention or within the same range.

1: Ground frame 4: Fastener (fixing mechanism, lifting means)
5: Structure during construction 6: Receiving part (fixing mechanism part, lifting means)
7: Frame 7A: Roof 8: Balance 11: Columnar member 12: Beam-shaped member 41: Vertical surface portion 41a: Bolt 41b: Nut 42: Horizontal plate portion 42c: Load receiving bolt 42e: Nut 43: Rib portion 51: Outer wall surface material 51a: Non-combustible heat insulating material 51b: Steel plate 51c: Steel plate 51d: Recessed 51e: Convex portion 52: First base material 53: Second base material 55: Clip 55a: Member 55b: Screw 55c: Spacer 61: Load receiving plate 61a: Positioning Pin 61b: Protruding screw 62: L angle 62a: Horizontal piece 62b: Rising piece 71: Roof beam 71a: Connecting material 72: Windproof beam 72A: Roof side windproof beam 72a: L angle 73: Floor beam 81: Fixed part 82: Counter weight 83: Hanging source 502: Rear fitting outer wall material

Claims (7)

It is a construction method of a building in which an outer wall in which a plurality of outer wall materials are arranged vertically is provided on the outdoor side of the skeleton, and is a step of forming a temporary opening in the outer wall in which the outer wall material and the base material do not exist, and the temporary opening. The height position of the upper outer wall material to be rear-fitted is changed by an elevating means for changing the height position of the upper outer wall material located above the rear-fitted outer wall material. A method of constructing a building, which comprises a step of fitting the temporary opening into the temporary opening from the indoor side of the skeleton. In the building construction method according to claim 1, as the rear-fitting outer wall material, an outer wall material having engaging portions formed on each of the lower side and the upper side of the rear-fitting outer wall material is used, and the above-mentioned temporary When fitting the rear-fitting outer wall material into the opening, the engaging portions on the lower side and the upper side are fitted to the upper side and the upper side of the lower outer wall material located below the rear-fitting outer wall material. A method of constructing a building, which comprises engaging with the lower side of the upper outer wall material. In the building construction method according to claim 1 or 2, the elevating means is a fixing mechanism portion capable of adjusting the height of the upper outer wall surface material and fixing to the skeleton. Construction method. The building construction method according to claim 3, wherein the fixing mechanism portion for the upper outer wall surface material has a larger height adjustment range than the other fixing mechanism portions. .. In the building construction method according to any one of claims 1 to 4, as an outer wall surface material located above the temporary opening, an outer wall surface connected to the skeleton side at two locations above and below the indoor surface. A building construction method characterized by using materials. In the building construction method according to claim 5, at least the lower connection of the two connections is the above-mentioned rising member provided on the indoor side of the upper outer wall material and rising upward. It is performed by engaging with the skeleton side, and the height of the rising member is a height at which the engagement is maintained even when the height position of the upper outer wall material is changed. Construction method. In the construction method of the building according to any one of claims 1 to 6, a construction-time structure in which a plurality of outer wall materials are arranged one above the other and can be lifted as a whole is used. The second base material, which is connected to the base material of the upper and lower outer wall materials across the temporary opening in the body, is removed after the structure at the time of construction is fixed to the building frame to obtain the temporary opening, while the temporary opening is obtained. When the rear-fitting outer wall material is attached from the indoor side of the skeleton, the base material of the rear-fitting outer wall material is used as the base material of the upper and lower outer wall materials by using the second base material. A building construction method characterized by connecting.

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