JP2007100470A - Construction method of rebuilding into house with rooftop - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the construction method of rebuilding the existing house into a house with a rooftop and to place rooftop floorings appropriately and efficiently. <P>SOLUTION: The construction method includes a roof-removal process, a framework process, a bent-plate attachment process, a C-shaped steel attachment process, and the process of placing the rooftop floorings. The roof-removal process is for removing the roof of the existing house and exposing beams, and the framework process is for making frameworks on the beam with a squared timber. Then the bent-plate attachment process is for placing and attaching the corrugated cross-section bent plates on the frame without creating any clearance, and the C-shaped steel attachment process is for attaching C-shaped steels on the bent plates by making the C-shaped steels intersect the groove direction of the bent plates and by directing the opening of the C-shaped steels downward. The process of placing the rooftop floorings is for placing the rooftop floorings on the C-shaped steels. In the C-shaped steel attachment process, a metal fixture 11 is fixed on the top surface of the bent plates so that both of the end parts of the metal fixture 11 are directed upward and that the direction of a C-shaped steel retaining groove, which is formed between both of the end parts, intersects the grove direction of the bent plate 10. Both ends of the U-shaped cross-section metal fixture 11 are bent at a nearly 90° angle in the same direction with respect to the midsection. Then the C-shaped steel 14 is retained by the C-shaped steel retaining groove 11c of the metal fixture 11, and the bent end part 11b of the metal fixture and the side wall part of the C-shaped steel are screwed with a screw 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a construction method for renovating an existing house to a rooftop house.

The present applicant has previously filed a patent application regarding a method of renovating an existing house to a rooftop house.
JP 2002-20800 A

  The method described in Patent Document 1 can convert an existing house into a house with a roof in a short period of time, compared to the conventional method in which the roof is constructed in the same way as in the case of new construction after completely removing the ceiling from the roof. It has the advantage of being able to. However, when renovation work is actually carried out by this method, it has been found that there are the following construction problems depending on the shape of the rooftop material and the way of laying.

  FIG. 14 shows a roof floor material laying process in the case where construction is performed by the method described in Patent Document 1. In the figure, 10 is a folded plate, 14 is a C-shaped steel, 15 is a bolt, 16 is a rooftop floor material, and these are in accordance with the signs described in Patent Document 1. As shown in the drawing, since the head of a bolt 15 for attaching the C-shaped steel to the folded plate protrudes from the upper surface of the C-shaped steel 14, the head of the bolt and the first and second hanging of the rooftop flooring 16 The parts 16a and 16b may interfere with each other and the rooftop flooring 16 may not be properly laid. Even if the first and second hanging parts 16 a and 16 b of the roof floor material 16 do not interfere with the heads of the bolts 15, when the roof floor material 16 is moved on the C-shaped steel 14, Since the roof floor material 16 must be lifted so as not to hit the head, and it is difficult to lay the roof floor material alone, there is an inefficiency that two people must work at least.

  The present invention has been made in view of the above circumstances, and improves the construction method for renovating a conventional existing house to a house with a roof so that the roof floor material can be laid appropriately and efficiently. Is an issue.

  The following measures were taken for the above issues. That is, the method of construction for renovating an existing house according to the present invention to a house with a roof includes a roof removing process of removing the roof of the existing house and exposing the beam, and a frame process of forming a frame with a square on the beam. A folded plate mounting step in which folded plates having a corrugated cross section are mounted on the frame without gaps, and a C-shaped steel is mounted on the folded plate with its opening facing down, intersecting the groove direction of the folded plate. A method of remodeling a rooftop house including a C-shaped steel mounting step and a rooftop flooring laying step for laying a rooftop flooring on the C-shaped steel, wherein the C-shaped steel mounting step On the other hand, a U-shaped mounting bracket whose both ends are bent by approximately 90 degrees in the same direction, both ends are directed upward, and the direction of the C-shaped steel holding groove formed between both ends is the groove direction of the folded plate Fix to the upper surface of the folded plate so that it intersects, It holds the C-type steel Jimizo, and a side wall portion of the bent end portion and the C-type steel mounting bracket characterized by screwed with screws.

  According to the present invention, since there are no projections such as bolts and nuts on the upper surface of the C-shaped steel at the time when the C-shaped steel mounting process is completed, the rooftop floor material can be properly laid thereon and the laying work Can be performed efficiently.

  Hereinafter, the present invention will be described in detail by taking as an example the construction of remodeling the existing house A shown in FIG. 1 into a rooftop house B shown in FIG.

  In the reconstruction work, first, the roof 1 of the existing house A is removed to expose the beams (roof removing process). FIG. 3 is a perspective view of the construction location showing the state after the roof removal process, and the beams 2 assembled vertically and horizontally are exposed. The ceiling material 3 is left as it is below the beam 2.

  Next, as shown in FIG. 4, a frame is formed on the beam 2 with square bars 4 (frame setting step). In the embodiment, a steel pipe 4 is used as a square member and is assembled in a lattice shape. As a method for connecting steel pipes, for example, as shown in FIG. 5, an L-shaped connecting piece 5 is attached to a vertical steel pipe 4 (1) by welding, and the connecting piece 5 and the horizontal steel pipe 4 (2) are connected. It is good to fix with the volt | bolt 6 and the nut 7. FIG.

  Moreover, as shown in FIG. 6, the folded plate support body 8 is attached to the upper surface of the steel pipe 4 as a pre-process of the next folded plate attachment process. A fixing bolt 9 is fixed to the top of the folded plate support 8 with the threaded portion facing upward.

  Then, as shown in FIG. 7, the folded plates 10 having a corrugated cross section are arranged on the frame of the steel pipe 4 without any gaps (folded plate attaching step). The mounting method is such that the folded plate 10 is overlapped on the folded plate support 8 so that the fixing bolt 9 is inserted into the through hole 10a, and a mounting bracket 11 to be described later is attached to the bolt hole 11d. It is placed on the folded plate 10 so as to be inserted, and the nut 13 is screwed after the washer 12 is fitted to the end of the fixing bolt 9 protruding above the folded plate support 8 and the mounting bracket 11. By doing so, both the folded plate 10 and the mounting bracket 11 are fixed to the folded plate support 8. When a plurality of folded plates 10 are arranged, adjacent folded plates 10 are not fixed to prevent the folded plates 10 from being deformed by thermal expansion and contraction. If the folded plate 10 is arranged with a gradient in the groove direction, drainage is good.

  The mounting bracket 11 is formed by press-working a long and narrow rectangular metal plate. As shown in FIG. 8, both end portions 11b and 11b are bent substantially 90 degrees in the same direction with respect to the central portion 11a. A C-shaped steel retaining groove 11c is formed between the pair of bent end portions 11b and 11b. The width of the C-shaped steel holding groove 11c is set slightly wider than the width of the C-shaped steel 14 described later. The central portion 11a has a bolt hole 11d that is long in the width direction of the C-shaped steel holding groove 11c. Further, screw holes 11e and 11e are formed in both bent end portions 11b and 11b, respectively. The positions of the pair of screw holes 11e and 11e are shifted in opposite directions with respect to the length direction of the C-shaped steel holding groove 11c with reference to the position of the bolt hole 11d.

  Next, as shown in FIG. 9, the C-shaped steel 14 that intersects the groove direction of the folded plate 10 and the opening is directed downward is held in the C-shaped steel holding groove 11 c of the mounting bracket 11, and the screw holes 11 e, The bent end portions 11b and 11b of the mounting bracket 11 and the side wall portions 14a and 14a of the C-shaped steel 14 are screwed together by screws 15 and 15 inserted from 11e (C-type steel mounting step).

  Since the distance between the pair of bent end portions 11b, 11b of the mounting bracket 11 is slightly wider than the width of the C-shaped steel 14 and the bolt holes 11d are elongated holes, the arrangement of the plurality of fixing bolts 9 is not straight. However, the C-shaped steel 14 can be held in the C-shaped steel holding portion 11 c of the mounting bracket 11. Further, since the positions of the pair of screw holes 11e, 11e are shifted, when the bent end portions 11b, 11b of the mounting bracket 11 and the side wall portions 14a, 14a of the C-shaped steel 14 are screwed together, as shown in FIG. The mounting bracket 11 is inclined with respect to the C-shaped steel 14, the corners of the bent end portions 11b and 11b of the mounting bracket 11 are engaged with the side wall surface of the C-shaped steel 14, and the mounting bracket 11 and the C-shaped steel 14 are tightly integrated. It becomes.

  Finally, as shown in FIG. 11, a rooftop floor material 16 is laid on the C-shaped steel 14 so as to cross the C-shaped steel (a rooftop floor material laying step). As shown in FIG. 12, the roof floor material 16 is formed with a flat plate-like first hanging portion 16a at one end edge, and a bottom surface level at the other end edge with a lower end level of the first hanging portion 16a. The second hanging portion 16b having substantially the same groove is formed. Each roof floor material 16 is laid in a state where the first hanging portion 16a of the adjacent roof floor material 16 is fitted in the groove of the second hanging portion 16b, and is fixed to the C-shaped steel 14 by the screw type fixing tool 17. Since there is no protrusion on the upper surface of the C-shaped steel 14, this rooftop floor material laying operation can be performed efficiently.

  In the house B with the roof constructed in this way, the space between the ceiling material 3 and the roof floor material 16 is wide, and the space is partitioned up and down by the folded plate 10 to suppress air convection. Good heat insulation. Rainwater passes between the roofing floor materials 16 and 16 and is received and drained by the groove of the second hanging portion 16b.

  In the above embodiment, a case where a general Japanese house is remodeled into a house with a roof has been described. However, the present invention is applicable to other than a general Japanese house. For example, when the roof portion is formed of the folded plate 10 having a corrugated cross section as in the prefab house C shown in FIG. 13, the existing folded plate 10 is used as it is, and the roof removal process, the frame process, and the folded plate attachment process. Can be omitted.

It is a perspective view of an existing house. It is a perspective view of a house with a roof. It is a perspective view of the construction location which shows the state which finished the roof removal process. It is (a) front sectional drawing of the construction location which shows the state which finished the frame process, and (b) side sectional drawing. It is a perspective view of the connection part of a steel pipe. It is a perspective view of the attaching part of the folded-plate support body to a steel pipe. It is (a) front sectional drawing of the construction location which shows the state which finished the folded-plate attachment process, and (b) side sectional drawing. It is a perspective view of a mounting bracket. It is (a) front sectional drawing of the construction location which shows the state which finished the C-shaped steel attachment process, and (b) side sectional drawing. It is a top view of a mounting bracket and C-type steel. It is the (a) front sectional view of the construction location which shows the state which finished the roof floor material laying process, and (b) side sectional view. It is a perspective view of a rooftop floor material. It is a perspective view of a prefabricated house. It is a perspective view showing the conventional rooftop floor laying process.

Explanation of symbols

A House before renovation B House after renovation 1 Roof 2 Beam 3 Ceiling material 4 Steel pipe (Square)
8 Folded plate support 9 Fixing bolt 10 Folded plate 11 Mounting bracket 11a Center portion 11b Bent end portion 11c C-type steel holding groove 14 C-type steel 15 Screw 16 Roof floor material

Claims (1)

A roof removal step of removing the roof of the existing house to expose the beam, a frame step of forming a frame with square bars on the beam, and a folded plate attaching step of mounting folded plates with a corrugated cross section on the frame without gaps And a C-shaped steel mounting step for mounting the C-shaped steel on the folded plate so as to intersect the groove direction of the folded plate with the opening facing down, and a rooftop for laying a rooftop floor material on the C-shaped steel A method of renovation to a rooftop house that includes a material laying process,
The C-shaped steel mounting step is a C-shaped steel retaining groove formed between the both ends of a U-shaped mounting bracket whose both ends are bent approximately 90 degrees in the same direction with respect to the central portion. Is fixed to the upper surface of the folded plate so that the direction of the folded plate intersects the groove direction of the folded plate, the C-shaped steel is held in the C-shaped steel holding groove of the mounting bracket, and the bent end of the mounting bracket and the side wall of the C-shaped steel A method of construction to renovate a house with a roof, which is characterized by screwing the part with a screw.

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