JPS5845552B2 - Second floor extension method - Google Patents

Description

[Detailed Description of the Invention] The present invention is very useful when extending a part of an existing one-story building to a second floor, or when extending a part of a one-story building to be constructed to a second floor in the future. The purpose of this project is to propose a second-story extension construction method.

When extending a part of a one-story building to a second floor, conventionally, the existing roof part of the first floor corresponding to the second floor extension was replaced with structural components such as tiles, roof boards, main building, braces, trusses, etc. After carrying out demolition work to separate units or similar units, a second-story structure to be expanded is constructed, and then the constituent members of the dismantled first-floor existing roof section are used to construct the structure for the second-story roof. The methods used were to reuse existing parts and assemble them, or to assemble newly prepared structural members for the second-story roof, but when using such conventional extension construction methods, the above-mentioned dismantling work and assembly of the second-story roof were necessary. The drawbacks were that the construction required a great deal of effort, lengthened the construction period, and increased construction costs, placing an excessive burden on residents.

In view of the above circumstances, the present invention focuses on the fact that the mainstream roof form in recent one-story buildings is truss units, and makes it possible to add a second floor to a part of a one-story building in a short period of time rationally and economically. This paper proposes a method that can do this.

In other words, in modern one-story buildings, in order to improve work efficiency on site, the roof is divided into multiple parts and made into truss units.
Many methods are used to construct a roof of a desired size by connecting a plurality of roof truss units on-site.

The present invention provides a method for adding a roof truss that is originally made into a unit when extending a part of a one-story building to a second floor, which has a roof that is made into a truss unit and can be easily separated into multiple pieces. Therefore, the truss unit was intended to be used as a roof truss for the second floor that was added without taking the trouble of disassembling it. After separating it from the built-up roof part and lifting it up without disassembling it, and constructing a second-story structure to be added on the one-story building corresponding to this separated existing roof part, the separated existing roof part is then added to the two-story structure. This is a two-story extension construction method that is characterized by being installed and fixed on top of the building.

Therefore, according to the construction method of the present invention, it is possible to carry out the labor-intensive demolition work of separating the existing roof part of the first floor corresponding to the second-floor extension into its constituent parts or similar units, and to remove the removed first-floor roof. When converting the existing roof part of a building into an expanded second-story roof, the time-consuming assembly work of reassembling some of the disassembled components becomes unnecessary, and the existing roof part that was separated without disassembly can be used as a second-story structure. It was possible to expand the structure economically and efficiently in a short period of time by using very few means such as installing and fixing it on the body.

The construction method of the present invention will be listed below based on the drawings.

(1) Of the roof 1 of the one-story building A, the first-floor existing roof portion 1a corresponding to the second-floor extension (one unit of a truss unit).

) from the existing roof portion 1b of the non-extension part.

(See Figure 1) (2) Separate the existing roof part 1a,
Instead of disassembling each component such as roof tiles and roof board main building, the building will be lifted up as a whole using a crane.

At this time, if there is an empty space next to building A, you can place the detached existing roof part 1a there, but if there is no empty space, leave it lifted with a crane or the like.

(See Figure 2) (3) Then, if necessary, reinforce the one-story building A corresponding to the detached existing roof portion 1a with beams, columns, etc. to withstand the addition of a second floor, and Build the second-floor structure 2 (frame frame, wall panels, columns, etc.) that should be built.

(See Figure 3) (4) After the construction, the separated existing roof portion 1a is placed on the second-story structure 2 using a crane or the like, and connected and fixed to the second-story structure 2.

(See Figure 4) (5) Finally, a shingle section 3 is constructed on the roof section 1a that is connected and fixed on the second floor structure 2, and a new roof and balcony 4 are constructed in the roof cutout section of the first floor. Attach it and complete the second floor extension.

(See Figure 5) In the above example, a case was explained in which a second floor was added to the center of the one-story building A in the ridge direction. Moreover, as shown in FIG. 7, it can also be applied to a second-story extension of a flat roof type building A'.

In addition, the roof truss unit described in this specification refers to a unit in which a plurality of unit roof trusses are integrated into a desired size via structural members such as a main building or roofing board.

[Brief explanation of the drawing]

The drawings show an example of the second-floor extension construction method according to the present invention, and the first
5 to 5 are schematic perspective views showing the extension process, and FIGS. 6 and 7 are schematic perspective views of the building after the extension is completed, showing application examples. 1...roof, A...one-story building, 2...
...Second floor structure.

Claims (1)

[Claims] 1 One-story building A with a roof 1 that can be separated into multiple pieces
In order to extend a part of the building to the second floor, the existing roof section 1a of the first floor corresponding to the second floor extension section is separated from the existing roof section 1b of the non-extended section, and the separated existing roof section is lifted without disassembly. A two-story extension construction method characterized by constructing a two-story structure 2 to be extended on a one-story building A corresponding to the portion 1a, and then installing and fixing the separated existing roof portion 1a on the two-story structure 2. .