KR20240008180A - Construction method of modular unit with complex fire resistant coating materials - Google Patents

Abstract

The present invention is a modular device equipped with a composite fire-resistant coating that can secure excellent economic efficiency while preventing damage to the fire-resistant coating during field assembly of the modular unit by applying different fire-resistant materials to each part of each steel member constituting the modular unit. This is about the construction method of the unit.
The present invention includes a vertical member that is a steel member provided at four corners to be spaced apart from each other, four upper horizontal members that are steel members that connect the upper ends of neighboring vertical members, and four lower members that are steel members that connect the lower ends of neighboring vertical members. To assemble a plurality of modular units composed of horizontal members by stacking them vertically, (a) manufacturing a plurality of modular units by interconnecting and assembling the ends of the vertical member, the upper horizontal member, and the lower horizontal member; (b) applying fire-resistant paint to the upper surface of the upper horizontal member and the lower surface of the lower horizontal member of the modular unit; and (c) spraying a fire-resistant coating material on the remaining surfaces of the upper and lower horizontal members and the outer surfaces of the vertical members that are not coated with the fire-resistant paint; It is characterized by including.

Description

Construction method of modular unit with complex fire resistant coating materials}

The present invention is a modular device equipped with a composite fire-resistant coating that can secure excellent economic efficiency while preventing damage to the fire-resistant coating during field assembly of the modular unit by applying different fire-resistant materials to each part of each steel member constituting the modular unit. This is about the construction method of the unit.

Unlike existing buildings where assembly or construction of members is performed on site, a modular structure is a structural system that is completed by stacking modular units pre-manufactured in a box-type factory in a factory and stacking them up, down, left, and right on site.

In this modular system, not only the structural frame but also various interior and exterior materials, mechanical equipment, and electrical wiring processes are mostly carried out in the factory, so excellent quality can be secured and construction period can be greatly shortened by minimizing field processes.

Each modular unit constituting the modular system is usually provided with a vertical member at each corner, and the upper and lower ends of the vertical members are connected by horizontal members to form a rectangular parallelepiped.

Modular units require weight reduction because each member is assembled at the factory, transported to the site, and then installed by lifting. Therefore, the modular unit consists of vertical and horizontal members made of lightweight steel frame that is light in weight and has excellent structural performance.

However, in order to use a modular unit as a main structural member, it must be a fireproof structure that can withstand fire for more than 3 hours, so fireproofing must be applied to the outside of the vertical or horizontal members, which are lightweight steel frames.

Accordingly, Registered Patent No. 10-1036909, etc. forms a fire-resistant structure by wrapping a beam or pillar member with a separate fire-resistant board. However, fireproof boards have complicated details for joining beams and column members, so their manufacturability is low and they are expensive.

Additionally, fire-resistant coating may be considered. However, fire-resistant paint is easy to manufacture and manage, but the price of the paint material is very high, making it less economical, and the equipment for painting is large, so painting work is only possible in factories.

In addition, fire-resistant spray coating, which is commonly used to form a 3-hour fire-resistant structure, is very economical as its price is only 1/10 of that of fire-resistant painting. However, when fireproofing is applied on site, the working environment becomes poor due to the scattering of the fireproofing material, and as the high-altitude spraying work is carried out with the modular unit installed, there is a risk of safety accidents. In addition, in low temperatures such as winter, the adhesion of the fireproofing material decreases and the fireproofing material is damaged. There are many cases of being eliminated. Since there are many difficulties in on-site construction of fire-resistant spray coating, it is advantageous to perform fire-resistant spray coating construction in advance when manufacturing modular units at the factory.

However, fireproof spray paint has relatively weak adhesion. Therefore, if the upper surface of the upper horizontal member and the lower surface of the lower horizontal member of the modular unit are sprayed with fireproof paint in advance at the factory, the fireproof spray paint may fall off due to external shock during transportation, loading, or lamination assembly of the modular unit.

In order to solve the above problems, the present invention applies different fire-resistant materials to modular units composed of steel members, thereby preventing damage to the fire-resistant coating during on-site assembly of the modular unit and providing a modular structure with a composite fire-resistant coating that is highly economical. We would like to provide a method of constructing a unit.

The present invention according to a preferred embodiment includes a vertical member that is a steel member provided at four corners to be spaced apart from each other, four upper horizontal members that are steel members that connect the upper ends of neighboring vertical members, and a steel frame that connects the lower ends of neighboring vertical members. To assemble a plurality of modular units composed of four lower horizontal members by stacking them vertically, (a) the ends of the vertical members, the upper horizontal member, and the lower horizontal member are interconnected and assembled to form a plurality of modular units. manufacturing step; (b) applying fire-resistant paint to the upper surface of the upper horizontal member and the lower surface of the lower horizontal member of the modular unit; and (c) spraying a fire-resistant coating material on the remaining surfaces of the upper and lower horizontal members and the outer surfaces of the vertical members that are not coated with the fire-resistant paint; It provides a method of constructing a modular unit equipped with a composite fire-resistant coating, comprising:

The present invention according to another preferred embodiment includes, after step (c), (d) stacking a plurality of modular units vertically on site; It provides a method of constructing a modular unit equipped with a composite fire-resistant coating, further comprising:

In the present invention according to another preferred embodiment, in step (d), the lower modular unit and the upper modular unit are mutually fixed by combining the upper horizontal member of the lower modular unit and the lower horizontal member of the upper modular unit with a coupling member, the ( In step c), a fire-resistant spray coating material is not applied to the area where the coupling members of the horizontal members to be joined to each other are fastened, and after step (d), (e) a fire-resistant spray coating material is applied to the fastening area of the coupling members of the horizontal members. Step of on-site spray painting construction; It provides a method of constructing a modular unit equipped with a composite fire-resistant coating, further comprising:

The present invention according to another preferred embodiment is the construction of a modular unit equipped with a composite fire-resistant coating, wherein in step (c), a plurality of modular units are stacked up and down on site and then fire-resistant spraying material is sprayed on-site. Provides a method.

The present invention according to another preferred embodiment is characterized in that the horizontal member has a U-shaped cross-section with an open inner side, guide angles are provided at the upper and lower portions of the outer surface, and a fire-resistant spray material is sprayed between the upper and lower guide angles. A method of constructing a modular unit equipped with composite fire-resistant covering is provided.

According to the present invention, in a modular unit composed of steel frame members, the upper and lower surfaces of the modular unit, which are subject to a lot of external shock or contact, are painted with a fire-resistant paint of thin thickness and excellent strength, and then the fire-resistant paint of each steel frame member is not painted. A method of constructing a modular unit equipped with a composite fire-resistant coating can be provided by spraying a fire-resistant coating material on the surface.

Accordingly, different fire-resistant materials are applied to each part of the steel members that make up the modular unit, thereby preventing damage to the fire-resistant coating during field assembly of the modular unit while ensuring excellent economic efficiency.

1 is a perspective view showing a modular unit.
Figures 2 (a) and (b) are cross-sectional views showing a state in which fire-resistant paint is applied to the upper horizontal member and the lower horizontal member, respectively.
Figures 3 (a), (b), and (c) are cross-sectional views showing a state in which fireproof spray material is installed on the upper horizontal member, lower horizontal member, and vertical member, respectively.
Figure 4 is a cross-sectional view showing a state in which fire-resistant paint and fire-resistant spray material are installed on the H-beam upper horizontal member.
Figure 5 is a cross-sectional view showing the stacking process of the upper and lower modular units on which fire-resistant paint and fire-resistant spray material are applied.
Figure 6 is a cross-sectional view showing the stacked state of the upper and lower modular units on which fire-resistant paint and fire-resistant spray material are applied.
Figures 7 to 9 are diagrams illustrating the construction process of fire-resistant spraying material at the fastening portion of the coupling members of horizontal members adjacent to each other above and below.
Figures 10 (a) and (b) are cross-sectional views illustrating the process of constructing fire-resistant spraying material after stacking the upper and lower modular units.
Figure 11 is a cross-sectional view showing an upper horizontal member provided with a guide angle.

Hereinafter, the present invention will be described in detail according to the accompanying drawings and preferred embodiments.

Figure 1 is a perspective view showing a modular unit, and Figures 2 (a) and (b) are cross-sectional views showing a state in which fire-resistant paint is applied to the upper horizontal member and the lower horizontal member, respectively. And Figures 3 (a), (b), and (c) are cross-sectional views showing the state in which the fire-resistant spraying material is installed on the upper horizontal member, lower horizontal member, and vertical member, respectively, and Figure 4 is a cross-sectional view showing the state in which the fire spraying material is installed on the upper horizontal member of the H-beam steel. This is a cross-sectional view showing the state in which fire-resistant paint and fire-resistant spray material have been installed.

As shown in Figures 1 to 4, the construction method of the modular unit equipped with the composite fire-resistant coating of the present invention includes vertical members 2a and 2b, which are steel members spaced apart from each other at the four corners, and adjacent vertical members 2a. , 2b) with four upper horizontal members (3a, 3b), which are steel members connecting the upper ends of the adjacent vertical members (2a, 2b), and four lower horizontal members (4a, 4b), which are steel members connecting the lower ends of the neighboring vertical members (2a, 2b). It is for assembling a plurality of modular units (1a, 1b) by stacking them vertically, (a) the vertical members (2a, 2b), upper horizontal members (3a, 3b), and lower horizontal members (4a, 4b) Manufacturing a plurality of modular units (1a, 1b) by assembling and connecting the ends of; (b) painting fire-resistant paint (6) on the upper surfaces of the upper horizontal members (3a, 3b) and lower surfaces of the lower horizontal members (4a, 4b) of the modular units (1a, 1b); and (c) a fire-resistant coating material on the remaining surfaces of the upper horizontal members (3a, 3b) and lower horizontal members (4a, 4b) and the outer surfaces of the vertical members (2a, 2b) that are not coated with the fire-resistant paint (6). (7) Step of spraying construction; It is characterized by including.

The present invention applies different fireproof materials to each part of the modular units (1a, 1b) composed of steel members, thereby preventing damage to the fireproof coating during field assembly of the modular units (1a, 1b) and providing a composite fireproofing system with excellent economic efficiency. The purpose is to provide a method of constructing a modular unit equipped with a covering.

The present invention can be applied to various modular structures constructed by stacking and assembling modular units (1a, 1b), and is applied to various modular structures such as residential houses, school facilities, various lodging facilities, officetels, and temporary disaster facilities as well as rooftop structures. possible.

In the present invention, first, (a) the vertical members (2a, 2b), the upper horizontal members (3a, 3b), and the ends of the lower horizontal members (4a, 4b) are interconnected and assembled to form a plurality of modular units (1a, 1b). Produced (Figure 1).

The modular units (1a, 1b) include four vertical members (2a, 2b) provided at four corners to be spaced apart from each other, and four upper horizontal members (3a, 3b) connecting the upper ends of neighboring vertical members (2a, 2b). ) and four lower horizontal members (4a, 4b) connecting the lower ends of neighboring vertical members (2a, 2b), forming an overall rectangular parallelepiped shape.

The vertical members (2a, 2b), upper horizontal members (3a, 3b), and lower horizontal members (4a, 4b) are each formed of steel members.

The vertical members 2a and 2b may be square pipes having excellent bi-directional cross-sectional rigidity.

Bottom plates (5a, 5b) may be provided inside the four lower horizontal members (4a, 4b).

The lower horizontal members (4a, 4b) connect the upper and lower flanges (41, 42) and one end of the upper and lower flanges (41, 42) to support formwork such as deck plates for concrete pouring of floor plates (5a, 5b). It is composed of a web 43 and can be formed into a U-shaped cross section with an open inside.

For manufacturing and management efficiency, the upper horizontal members (3a, 3b) can also be formed with the same cross-section as the lower horizontal members (4a, 4b). That is, the upper horizontal members 3a and 3b are also composed of an upper flange 31 and a lower flange 32 and a web 33 connecting the upper and lower flanges 31 and 32, forming a U-shaped cross section with an open inside. can do.

The bottom plates (5a, 5b) are provided inside the lower horizontal members (4a, 4b) arranged in a square shape in plan view. The bottom plates (5a, 5b) serve as diaphragms of the frame formed by the lower horizontal members (4a, 4b) to improve resistance to lateral force.

Next, (b) the fireproof paint 6 is applied to the upper surfaces of the upper horizontal members 3a, 3b and the lower surfaces of the lower horizontal members 4a, 4b of the modular units 1a, 1b (FIG. 2).

When transporting, loading, or installing the modular units (1a, 1b), the upper and lower surfaces of the modular units (1a, 1b) are exposed to a lot of external shock or contact, so there is a problem that the fireproof material is damaged when the fireproof spray coating is applied.

Therefore, the upper and lower surfaces of the modular units 1a and 1b, that is, the upper surfaces of the upper horizontal members 3a and 3b ((a) of Figure 2) and the lower surfaces of the lower horizontal members 4a and 4b ((b of Figure 2) )), instead of spraying fireproof paint, apply fireproof paint (6).

Since the fire-resistant paint 6 is thinner and has superior strength compared to the fire-resistant spray paint, there is no risk of damage due to external impact or contact.

The fire-resistant paint 6 is preferably a 3-hour fire-resistant epoxy series with high strength and durability.

Since the modular units 1a and 1b are partially coated with the fireproof paint 6 only on the upper and lower surfaces, the increase in cost due to the fireproof paint 6 can be minimized.

The fire-resistant paint (6) painting step is carried out in a factory where large-scale painting equipment is readily available.

and (c) applying a fire-resistant coating material to the remaining surfaces of the upper horizontal members (3a, 3b) and lower horizontal members (4a, 4b) and the outer surfaces of the vertical members (2a, 2b) that are not painted with the fire-resistant paint (6). (7) is sprayed (Figure 3).

That is, after completing the application of the fire-resistant paint (6), the fire-resistant paint (7) is sprayed on the surface of each steel frame member that has not been painted with the fire-resistant paint (6).

The upper horizontal members (3a, 3b) are coated with fire-resistant spray paint (7) on all surfaces except the upper surface where fire-resistant paint (6) is applied (FIG. 3(a)).

The lower horizontal members (4a, 4b) are coated with fire-resistant paint (6) on their lower surfaces. Therefore, when the bottom plates 5a and 5b are provided inside the lower horizontal members 4a and 4b, the fireproof spray material 7 is applied only to the outer side, and there is no need to separately fireproof the inner side (Figure 3 (b)).

If the vertical members 2a and 2b are steel pipes, the fireproof spray material 7 is installed only on the exposed outer surface (Figure 3(c)).

In some cases, in addition to the U-beam, H-beam steel or square steel pipe may be used as the horizontal members 3a, 3b, 4a, and 4b.

Figure 4 shows an embodiment in which the upper horizontal members 3a and 3b are H-beam steel.

In Figure 4, fire-resistant paint (6) was applied to the upper part of the H-beam, and fire-resistant spray paint (7) was applied to the remaining surfaces except the upper surface of the H-beam.

In this way, if the fire-resistant spray material (7) is installed only in areas where there is no risk of external impact in the modular units (1a, 1b), the fire-resistant spray material (7) may fall off during the handling or installation process of the modular units (1a, 1b). On-site re-construction can be minimized.

Figure 5 is a cross-sectional view showing the stacking process of the upper and lower modular units on which fire-resistant paint and fire-resistant spray paint are applied, and Figure 6 is a cross-sectional view showing the stacking state of the upper and lower modular units on which fire-resistant paint and fire-resistant spray paint are applied.

As shown in FIGS. 5 and 6, after step (c), (d) constructing a plurality of modular units (1a, 1b) by stacking them vertically in the field; More may be included.

Each steel member constituting the modular units (1a, 1b) is treated with fireproof paint (6) and fireproof spray material (7) in advance at the factory, and then the fireproofed modular units (1a, 1b) are installed on site. It can be brought in and constructed in a layered manner.

When performing on-site lamination construction of these modular units (1a, 1b), on-site fire resistance treatment work can be minimized.

In order to couple the upper and lower modular units 1a and 1b, a plurality of shear connecting pins 30 may be formed to protrude from the upper surface of the upper horizontal member 3a of the lower modular unit 1a.

In addition, a pinhole 40 may be formed in the lower flange 42 of the lower horizontal member 4b constituting the upper modular unit 1b at the position of the shear connecting pin 30.

The shear connecting pin 30 may pass through the pinhole 40 and be fixed inside the lower horizontal member 4b of the upper modular unit 1b.

A through hole H may be provided inside the bottom plate 5b to communicate with the pinhole 40 (FIG. 5).

The inside of the pinhole 40 and the through hole (H) of the bottom plate (5b) in communication with the pinhole 40 is filled with a filler (F) such as non-shrinking mortar, so that the shear connecting pin 30 can be fixed (Figure 6).

The horizontal members (3a, 3b, 4a, 4b) of the modular units (1a, 1b) are provided in both x and y directions on a plane. The horizontal members 3a, 3b, 4a, and 4b in each direction are supported by the shear connection pin 30 and can exert sufficient support against two-way lateral force.

In addition, when the upper and lower modular units are previously joined by bolting, the ceiling finishing material of the lower modular unit or the floor finishing material of the upper modular unit must be removed in order to fasten the bolts, or the upper and lower modular units must be joined in an unbuilt state and then constructed later. did. However, when the upper and lower modular units (1a, 1b) are joined by the shear connection pin (30) and the pinhole (40), there is no need for a finishing material removal process, so constructability is excellent.

Figures 7 to 9 are diagrams illustrating the construction process of fire-resistant spraying material at the fastening portion of the coupling members of horizontal members adjacent to each other above and below.

As shown in FIGS. 7 to 9, in step (d), the lower modular unit (1a) and the upper modular unit (1b) are connected to the upper horizontal member (3a) of the lower modular unit (1a) and the upper modular unit (1b). ) are mutually fixed by combining the lower horizontal members 4b with the coupling members 8, and in step (c), the area where the coupling members 8 of the horizontal members 3a and 4b that are joined to each other are fastened is fireproof. The spray coating material (7) is not applied, and after step (d), (e) spraying the fire-resistant spray coating material (7) on site at the fastening portion of the coupling member (8) of the horizontal members (3a, 4b). ; More may be included.

In another embodiment for joining the modular units 1a and 1b stacked up and down, the horizontal members 3a and 4b can be coupled to each other using the coupling member 8.

By bonding the upper horizontal member 3a of the lower modular unit 1a and the lower horizontal member 4b of the upper modular unit 1b to each other with a plurality of coupling members 8, sufficient shear force is exerted and vibration and Resistance to sagging can be improved.

The coupling member 8 is provided on the coupling bolt 81 that passes through the horizontal members 3a and 4b of the upper and lower modular units 1a and 1b and is fastened to the lower horizontal member 4b of the upper modular unit 1b. The coupling bolt 81 may be configured as a coupler 82 that is screwed together (FIGS. 8 and 9).

In this case, if the fireproof spray material (7) is pre-installed inside the upper horizontal member (3a) of the lower modular unit (1a), it is difficult to fasten the coupling bolt (81).

Therefore, during factory construction of the fireproof spray coating material (7), the coupling member (8), especially the area where the coupling bolt (81) is fastened, is left in an unconstructed state. For example, in FIG. 7, fireproof spray material 7 was not installed on the lower surface of the upper flange 31 of the upper horizontal member 3a to which the coupling member 8 is fastened.

In this state, the upper and lower modular units (1a, 1b) are stacked, and the horizontal members (3a, 4b) are joined to each other using the joining member (8) (FIG. 8).

Then, the fire-retardant spray material (7) is sprayed onto the fastening area of the coupling member (8) at the site (FIG. 9).

Since the area where the coupling member 8 is fastened has a very small area to be sprayed, even if the fire-resistant spray material 7 is installed on site, there is little air delay or impact on the working environment.

On the other hand, when a guide plate (not shown) is coupled to the upper part of the vertical members (2a, 2b) to connect laterally neighboring modular units (1a, 1b), the lower modular unit (1a) and the lower modular unit (1a) are separated by the thickness of the guide plate. The upper modular units 1b are spaced apart from each other.

In this case, there is a risk that the coupling bolts 81 or the horizontal members 3a and 4b may be deformed in the spaced area between the upper horizontal member 3a of the lower modular unit 1a and the lower horizontal member 4b of the upper modular unit 1b. There is.

In addition, since the upper horizontal member (3a) and the lower horizontal member (4b) are spaced apart from each other, when sagging occurs in the horizontal members (3a, 4b), the gap between the upper horizontal member (3a) and the lower horizontal member (4b) becomes closer and they are joined. The bolt (81) may become loose and may not properly support the shear force.

Therefore, the support spacer 83 with a height corresponding to the height of the space between the upper horizontal member 3a and the lower horizontal member 4b is coupled to the coupling bolt 81 to reinforce the coupling bolt 81, and the upper and lower horizontal members ( By maintaining the distance between 3a and 4b), the coupling bolt 81 can be firmly fastened.

Figures 10 (a) and (b) are cross-sectional views showing the process of installing fireproof spray material after stacking the upper and lower modular units.

As shown in Figures 10 (a) and (b), in step (c), a plurality of modular units (1a, 1b) are stacked up and down at the site, and then the fireproof spray material (7) is sprayed on site. It can be.

The spraying construction step of the fireproof spraying material 7 is preferably performed in a factory for workability and uniform quality, but in some cases, on-site construction is also possible.

In other words, painting of the fire-resistant paint (6) can be done at a factory, and spraying of the fire-resistant paint (7) can be done at a field work.

Therefore, after stacking the upper and lower modular units (1a, 1b) with the fire-resistant paint (6) painted as shown in (a) of Figure 10, fire-resistant spray paint (7) is installed on site as shown in (b) of Figure 10. can do.

Here, when joining the horizontal members (3a, 4b) of the upper and lower modular units (1a, 1b) by interconnecting them with the joining member (8), it is convenient to cover the fireproof spray coating material (7) by one-time spray coating. do.

Figure 11 is a cross-sectional view showing an upper horizontal member provided with a guide angle.

As shown in FIG. 11, the horizontal members (3a, 3b, 4a, 4b) have a U-shaped cross section with an open inside, and guide angles (9) are provided at the upper and lower portions of the outer surfaces, respectively, so that the upper and lower guide angles (9) ) The fireproof spray material (7) can be sprayed between the walls.

When the plastering finish (10) is constructed on the outer surface of the horizontal members (3a, 3b, 4a, 4b), the fireproof spray material (7) constructed on the outer surface of the horizontal members (3a, 3b, 4a, 4b) is The thickness must be consistent.

Therefore, when the horizontal members (3a, 3b, 4a, 4b) have a U-shaped cross section with an open inside, the coating thickness of the fireproof spray coating material (7) installed on the outside of the horizontal members (3a, 3b, 4a, 4b) is uniform. In order to maintain the fireproof coating material (7) and facilitate the plastering finish (10) on the outer surface of the fireproof spray coating material (7), a pair of A guide angle (9) may be provided.

The guide angle 9 may be provided on the upper and lower outer surfaces of the horizontal members 3a, 3b, 4a, and 4b, respectively.

The guide angle 9 may be provided long along the longitudinal direction of the horizontal members 3a, 3b, 4a, and 4b.

The pair of guide angles (9) are spaced apart from each other up and down, and a fire-resistant spray material (7) is filled between them.

The guide angle (9) surrounds the top and bottom of the refractory spray material (7) and prevents the refractory spray material (7) from being damaged or falling off.

1a, 1b: modular unit 2a, 2b: vertical member
3a, 3b: upper horizontal member 30: shear connection pin
31: upper flange 32: lower flange
33: Web 4a, 4b: Lower horizontal member
40: Pinhole 41: Upper flange
42: lower flange 43: web
5a, 5b: Bottom plate 6: Fireproof paint
7: Fireproof spray material 8: Coupling member
81: coupling bolt 82: coupler
83: Support spacer 9: Guide angle
10: Plastering finish F: Filling material
H: Through hole

Claims (5)

Vertical members 2a, 2b, which are steel members spaced apart from each other at the four corners, four upper horizontal members 3a, 3b, which are steel members connecting the upper ends of neighboring vertical members 2a, 2b, and adjacent vertical members It is for assembling a plurality of modular units (1a, 1b) consisting of four lower horizontal members (4a, 4b), which are steel members connecting the lower ends of the members (2a, 2b), by stacking them up and down,
(a) manufacturing a plurality of modular units (1a, 1b) by assembling and connecting the ends of the vertical members (2a, 2b), upper horizontal members (3a, 3b), and lower horizontal members (4a, 4b);
(b) painting fire-resistant paint (6) on the upper surfaces of the upper horizontal members (3a, 3b) and lower surfaces of the lower horizontal members (4a, 4b) of the modular units (1a, 1b); and
(c) Applying fire-resistant paint (6) on the remaining surfaces of the upper horizontal members (3a, 3b) and lower horizontal members (4a, 4b) and the outer surfaces of the vertical members (2a, 2b) that are not painted with the fire-resistant paint (6) ( 7) Step of spraying construction; A method of constructing a modular unit equipped with a composite fire-resistant coating, comprising:
In paragraph 1:
After step (c), (d) constructing a plurality of modular units (1a, 1b) by stacking them vertically at the site; A method of constructing a modular unit equipped with a composite fire-resistant coating, further comprising:
In paragraph 2,
In step (d), the lower modular unit (1a) and the upper modular unit (1b) connect the upper horizontal member (3a) of the lower modular unit (1a) and the lower horizontal member (4b) of the upper modular unit (1b) as a coupling member. (8) are combined and mutually fixed,
In step (c), the fireproof spray material (7) is not applied to the area where the coupling members (8) of the horizontal members (3a, 4b) that are joined to each other are fastened,
After step (d), (e) spraying fire-resistant spray material (7) on site at the fastening portion of the coupling member (8) of the horizontal members (3a, 4b); A method of constructing a modular unit equipped with a composite fire-resistant coating, further comprising:
In paragraph 1:
In step (c), a plurality of modular units (1a, 1b) are stacked up and down on site, and then the fireproof spray material (7) is sprayed on site. A method of constructing a modular unit equipped with a composite fireproof coating, characterized in that .
In paragraph 1:
The horizontal members (3a, 3b, 4a, 4b) have a U-shaped cross-section with an open inside, and guide angles (9) are provided at the upper and lower portions of the outer surface, respectively, and a fireproof coating material (7) is provided between the upper and lower guide angles (9). ) A method of constructing a modular unit equipped with a composite fire-resistant coating, characterized in that the construction is sprayed.

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