JP6325283B2 - Piping system construction method and piping system - Google Patents

Description

  The present invention relates to a piping system construction method and a piping system.

  In a conventional piping system construction method, there is a method of using a sheet-like repair auxiliary material when filling a sleeve hole in a state where the pipe is passed through the sleeve hole formed in the slab (for example, a patent) Reference 1). In this technique, the lower surface side of the sleeve hole is closed through the pipe in a hole formed in the auxiliary material for repair, thereby making it possible to backfill the mortar from the upper surface side of the sleeve hole.

Japanese Examined Patent Publication No. 4-38862 JP 2001-256557 A

  On the other hand, in a siphon drainage system or the like, a plurality of pipes may be penetrated through a slab. However, when filling a hole by passing a plurality of pipes through the slab, a plurality of pipes pass through the holes of the auxiliary material for repair. is there.

  Therefore, an object of the present invention is to provide a construction method of a piping system in which leakage of a cured material is suppressed when filling a through hole of a floor slab through which a plurality of pipes are penetrated, and a plurality of pipes are penetrated. An object of the present invention is to provide a piping system that can be constructed while suppressing leakage of a hardened material when filling a through hole of a floor slab.

The construction method of the piping system of the present invention is a construction method of a piping system in which a plurality of pipes are fixed using a hardened material inside through holes formed in a floor slab,
Using the cured product in which a plurality of piping through holes are formed, the floor slab together with the cured products in the state where the plurality of piping is passed through each of the plurality of piping through holes. Placing the inside of the through hole formed in,
Filling the curable material inside the through-hole formed in the floor slab;
Attaching the receiving member for receiving the cured product to the floor slab;
It is characterized by having.
According to the construction method of the piping system of the present invention, when filling the through hole of the floor slab through which a plurality of pipes are penetrated, leakage of the curable material can be suppressed.

As for the construction method of the piping system of the present invention, it is preferred that the hardening material is a nonflammable material.
In this case, it is possible to construct a piping system that is excellent in fire resistance and inconspicuous in construction marks.

Moreover, it is preferable that the construction method of the piping system of this invention has the said hardened | cured material formed with the nonflammable material.
In this case, it is possible to construct a piping system that is excellent in fire resistance and inconspicuous in construction marks.

In the construction method of the piping system of the present invention, it is preferable that the cured material and the material forming the cured product are mortar.
When the mortar is used as the curable material, it has excellent fluidity and is optimal for backfilling. Moreover, when using the said mortar as a material which forms the said hardened | cured material, since it is excellent in fluidity | liquidity, manufacture can be performed easily.

In the construction method of the piping system of the present invention, it is preferable to have a step of arranging a thermally expandable refractory member around the piping.
In this case, it is possible to construct a piping system that can prevent the spread of fire from the piping through-hole in the event of a fire.

In the piping system according to the present invention, a floor slab in which through holes are formed, a plurality of pipes, and a plurality of pipe through holes that pass through the plurality of pipes one by one are formed in a plurality. And a fixing member for fixing the plurality of pipes together with the cured product inside the through hole formed in the floor slab.
According to the piping system of the present invention, when filling the through hole of the floor slab through which a plurality of pipes are penetrated, it is possible to perform construction while suppressing leakage of the cured material from the gap formed between the pipes. Become.

The piping system of the present invention preferably has a receiving member that receives the cured product on the floor slab.
In this case, when filling the through hole of the floor slab through which a plurality of pipes are penetrated, it is possible to perform construction while suppressing leakage of the cured material from the gap formed between the floor slab and the cured product. Become.

In the piping system of the present invention, the material forming the cured product is preferably a nonflammable material.
In this case, it is excellent in fire resistance and the construction traces are not easily noticeable.

In the piping system of the present invention, the material forming the fixing member is preferably a nonflammable material.
In this case, it is excellent in fire resistance and the construction traces are not easily noticeable.

In the piping system of the present invention, the material forming the cured product and the material forming the fixing member are preferably mortar.
In this case, when the material forming the cured product is mortar, the cured product can be easily manufactured. Moreover, when the material which forms the said fixing member is mortar, since it is excellent in fluidity | liquidity, optimal backfilling is attained.

In the piping system of the present invention, it is preferable that a thermally expandable refractory member is disposed around the piping.
In this case, it is possible to prevent fire spread from the pipe through hole.

  ADVANTAGE OF THE INVENTION According to this invention, when filling the through-hole of the floor slab which penetrated several piping, the construction method of the piping system by which leakage of a hardening material is suppressed, and the floor slab which penetrated several piping When filling the through-hole, it is possible to provide a piping system that can be constructed while suppressing leakage of the cured material.

The schematic sectional view explaining the process of attaching the receiving member to the floor slab among the plurality of processes according to the construction method of the piping system, which is an embodiment of the present invention, and the schematic diagram of the receiving member according to the construction method from above. FIG. The plurality of siphon drain pipes of the plurality of steps according to the embodiment of FIG. 1 are cured inside the through holes formed in the floor slab in a state where each of the plurality of siphon drain pipes is passed through the respective pipe through holes of the cured product. It is a schematic cross section for demonstrating the process arrange | positioned with and the top view which shows typically the hardened | cured material which concerns on the construction method from upper direction. The plurality of siphon drain pipes of the plurality of steps according to the embodiment of FIG. 1 are cured inside the through holes formed in the floor slab in a state where each of the plurality of siphon drain pipes is passed through the respective pipe through holes of the cured product. It is a schematic cross section for demonstrating the process arrange | positioned together and the process of filling a hardening material inside the said through-hole. It is a schematic cross section which shows the piping system which is one Embodiment of this invention constructed | assembled through each process of FIGS. 1-3. It is a schematic cross section for demonstrating the function of the thermally expansible refractory member based on the piping system of FIG. 4, Comprising: (a) is piping before a fire outbreak (before heating), a thermally expansible refractory member, and hardening (B) shows the relationship between the piping, the thermally expandable refractory member and the cured product after a certain time has passed since the occurrence of the fire (heating), and (c) shows the fire occurrence (heating) The relationship between piping, a thermally expansible fire-resistant member, and hardened | cured material after a fixed time passes further is shown. It is a schematic cross section for explaining one problem which arises when constructing a piping system using the conventional construction method, and (b) is the other which occurs when constructing a piping system using the conventional construction method. It is a schematic cross section for demonstrating this problem.

  Hereinafter, with reference to drawings, the construction method and piping system of a piping system concerning one embodiment of the present invention are explained in detail.

<Piping system construction method>
The construction method of the piping system according to the present invention is mainly used for an apartment house composed of a plurality of floors. This embodiment demonstrates the construction method of the piping system of this embodiment for the example of the drainage system which flows down the drainage of each floor of an apartment house using siphon force. In the following description, the vertical direction means the direction of gravity and indicates the vertical direction of the drawing.

First, with reference to FIG. 1, the process of attaching the receiving member 2 mentioned later to the floor slab 1 in the construction method of the piping system which concerns on this embodiment is demonstrated.
In FIG. 1, the code | symbol 1 is a floor slab which divides each floor of an apartment house up and down. The floor slab 1 is formed with a through hole 1a that penetrates the floor slab 1 up and down. In the present embodiment, the through hole 1a is formed as a circular hole with a diameter phi _1. However, the through hole 1a is not limited to a round hole, and can be appropriately changed according to the use situation, such as a square hole.

Reference numeral 2 denotes a receiving member attached to the floor slab 1. Receiving member 2 has a larger surface area than the diameter phi ₁ of the through hole 1a formed in the floor slab 1 can be closed the through-hole 1a. Also the receiving member 2 has an opening 2a of the small diameter phi ₂ is than the diameter phi ₁ of the through hole 1a. The diameter φ ₂ is formed to be the same as or smaller than the outer diameter (diameter) φ ₄ of the soot pipe 4 a of the siphon drain pipe 4 described later. In the present embodiment, the receiving member 2 has two openings 2a, but the present invention is not limited to this. The number of openings 2a can be made to correspond to the number of required pipes. The receiving member 2 is made of, for example, an aluminum sheet, and an upper surface 2f has, for example, a waterproof adhesive so as to surround the through hole 1a formed in the floor slab 1.

  Thereby, the builder can attach the receiving member 2 to the lower surface 1f of the floor slab 1 as a first step, as shown in the sectional view of FIG. The receiving member 2 is preferably waterproof, such as an aluminum sheet, but is not limited thereto. For example, the receiving member 2 can be made of wood or the like. Moreover, the attachment method of the receiving member 2 is not limited to adhesion | attachment, For example, the attachment method using mechanical means, such as screwing, is also employable.

Next, with reference to FIG. 2 and FIG. 3, using the cured product 3 in which a plurality of pipe through holes 3a described later are formed, each of at least the plurality of pipe through holes 3a out of the pipe through holes 3a, Similarly, a process of arranging all the siphon drainage pipes 4 together with the cured product 3 inside the through holes 1a in a state where the pipes 4a of a plurality of siphon drainage pipes 4 to be described later are passed through one by one will be described.
First, in FIG. 2, the code | symbol 3 is the hardened | cured material formed with the hardened | cured material M, ie, the hardened | cured material M which hardened | cured the hardened material M previously. Examples of the curable material M include metal materials and cement-based materials as non-combustible materials. Examples of the cement-based material include concrete, mortar, and cement paste (NORO). In the present embodiment, for example, mortar is selected as the cement-based material, and the cured product 3 is formed of mortar.

As shown in the cross-sectional view of FIG. 2, the cured product 3 is disposed inside one through hole 1 a formed in the floor slab 1. In the present embodiment, the cured product 3 has a cylindrical shape with a diameter φ ₃ smaller than the diameter of the through hole 1a, as shown in the plan view of FIG. However, the hardened | cured material 3 is not limited to a column shape, For example, it can change suitably according to a use condition, such as a prismatic shape. Further, as shown in the cross-sectional view of FIG. 2, the cured product 3 is formed with a plurality of pipe through holes 3 a that penetrate the cured product 3 up and down (in the drawing, only one symbol is illustrated). In the present embodiment, the number of pipe through holes 3a is greater than the number of openings 2a of the receiving member 2. However, the number of pipe through holes 3a may be the same as the number corresponding to the opening 2a of the receiving member 2. The pipe through hole 3a is formed as a round hole having a diameter of _3a . However, the pipe through hole 3a is not limited to a round hole, and can be appropriately changed according to the external shape of the siphon drain pipe 4 described later, such as a square hole. Further, in the present embodiment, the diameter φ _3a of the pipe through hole 3a may be a dimension that can hold the soot pipe 4a of the siphon drain pipe 4 described later inside the pipe through hole 3a. For example, in order to arrange a heat-expandable fireproof member 5 to be described later, it can be formed with a larger diameter than the opening 2 a of the receiving member 2.

As a second step, the installer can arrange the cured product 3 inside one through hole 1a as shown in the cross-sectional view of FIG. In the present embodiment, the cured product 3 is placed inside one through hole 1 a by placing the lower surface 3 f on the upper surface 2 f of the member 2. In the present embodiment, the outer diameter φ ₃ of the cured product 3 is larger than the diameter φ ₂ of the opening 2 a of the receiving member 2. Thereby, even if the cured product 3 is placed on the receiving member 2, it does not fall off from the opening 2 a of the receiving member 2.

  Next, in FIG. 3, reference numeral 4 denotes a siphon drain pipe (pipe). The siphon drain pipe 4 is formed by a dredge pipe 4a and a horizontal pulling pipe 4b connected to the dredge pipe 4a. In the construction method of the piping system of this embodiment, it has the process of arrange | positioning the heat-expandable fireproof member 5 around the soot pipe 4a. The heat-expandable refractory member 5 increases its volume by heating at a certain temperature or higher. As shown in FIG. 3, the thermally expandable refractory member 5 preferably has the dredge 4 a of the siphon drain pipe 4 when the dredge pipe 4 a of the siphon drain pipe 4 is passed through the pipe through hole 3 a of the cured product 3. Among these, it is preferable to be located above the cured product 3 (the pipe through hole 3a). However, the arrangement of the heat-expandable refractory member 5 is not limited to this, and may be at least a position where the siphon drain pipe 4 can be broken and the pipe through hole 3a can be sealed as will be described later. For this reason, at least as shown in FIG. 3, it can arrange | position so that it may become a position outside the hardened | cured material 3, and can also arrange | position so that it may become a position inside the piping through-hole 3a. This step is performed between the second step and the third step described below, or separately from or simultaneously with the second step, that is, at least before placing the siphon drain pipe 4 on the cured product 3. Can be done.

  In addition, as a third step, the installer can pass the single siphon drain pipe 4 through the pipe through hole 3a of the cured product 3 and hold the plurality of siphon drain pipes 4 on the cured product 3. In the present embodiment, the siphon drain pipe 4 is inserted into the pipe through hole 3a of the cured product 3 by inserting the soot pipe 4a surrounded by the thermally expandable refractory member 5. At this time, the soot pipe 4a that penetrates the cured product 3 and protrudes from the lower surface 3f of the cured product 3 passes through an opening 2a formed in the receiving member 2 as shown in FIG. It can protrude from the lower surface 1f of the.

  Thus, if the said 2nd process and a 3rd process are performed, as shown in FIG. 3, a contractor will carry out all to each of at least some piping through-hole 3a among the piping through-holes 3a. In a state where the siphon drainage pipes 4 are passed through one by one, the process of arranging all these siphon drainage pipes 4 along with the cured product 3 inside the through hole 1a can be executed. As a result, the rigid pipes 4a of the plurality of siphon drain pipes 4 are respectively piped in a state of passing through the floor slab 1 in the vertical direction and projecting to the upper floor and the lower floor. In the second and third steps, the hardened material 3 is previously unitized by penetrating the hard tubes 4a of the plurality of siphon drainage tubes 4 through the hardened material 3, and the unitized hardened material 3 and the siphon drainage tube 4 are separated. It can also be carried out by arranging it inside the through hole 1a formed in the floor slab 1. In this case, the rigid pipes 4a of the plurality of siphon drain pipes 4 can be easily set inside the through hole 1a.

  Next, with reference to FIG. 3, the 4th process of filling the hardening material M inside the through-hole 1a formed in the floor slab 1 is demonstrated. After setting the plurality of siphon drain pipes 4 inside the through hole 1a using the cured product 3, the hardened material M is filled into the through hole 1a from the upper side of the floor slab 1. Examples of the curable material M include metal materials and cement-based materials as non-combustible materials, as in the case of the cured product 3. Examples of the cement-based material include concrete, mortar, and Noro as in the case of the cured product 3. When the hardened material M to be filled is a non-combustible material, together with the thermally expandable refractory member 5, two compartments (in this specification, a “space” such as a room) divided into upper and lower sides with the floor slab 1 as a boundary. Each of which may be a fire-proof zone (in this specification, a “zone” in which measures have been taken to prevent the fire from spreading to other zones). In this case, the through hole 1a of the floor slab 1 is a partition through hole that passes through the two fire protection sections. In the present embodiment, for example, a fire prevention section is assumed, and a mortar made of the same material as the cured product 3 is selected as the curing material M. The material of the cured product 3 and the material filled in the through hole 1a are preferably the same because the boundary when cured is not noticeable and preferable in appearance, and in particular, when both are mortar, the surface does not become rough. It is more preferable. However, the material of the hardened | cured material 3 and the material with which the through-hole 1a is filled may differ.

Tatekan 4a is adjacent, if the clearance S ₁ as shown in FIG. 3 between mutually Tatekan 4a is formed, in such a gap S _1, as in the conventional example shown in FIG. 6 (a), curing There is a risk that the material M will not spread reliably. Then, although the method of improving the fluidity | liquidity of the curable material M by increasing a water | moisture content etc. can also be considered, as shown in FIG.6 (b), the curable material M is opened by the fluidity | liquidity of the curable material M increasing. There is a risk of leakage from the portion 2a.

  In particular, when trying to cope by simply forming a plurality of openings 2a in the sheet-like receiving member 2, the strength of the sheet member is generally weak, so that the tub tube 4a is unexpectedly moved before the curable material M is cured. The sheet member may be damaged, and the cured material M may leak out.

On the other hand, according to the construction method of the piping system of the present embodiment shown in FIGS. 1 to 3, as shown in FIG. Therefore, when filling the through hole 1a of the floor slab 1 through which the plurality of soot pipes 4a are penetrated with the hardened material M, the soot pipe can be improved even if the fluidity is increased so that the hardened material M can be surely spread. Leakage of the curable material M from the gap S ₁ formed between 4a can be suppressed. Moreover, since the movement of each soot pipe 4a can be restrained if a part of soot pipe 4a is hold | maintained inside the piping through-hole 3a of the hardened | cured material 3 like the construction method of this embodiment, piping work There is also an advantage that it is easy to perform.

Moreover, in the construction method of this embodiment, it has the process of attaching the receiving member 2 which receives the hardened | cured material 3 to the floor slab 1 as above-mentioned. In this case, since the lower opening of the through hole 1a of the floor slab 1 is closed by the receiving member 2, the cured product 3 is held by the receiving member 2 inside the through hole 1a, so that the through hole 1a is filled. Sometimes, leakage of the curable material M from the gap S ₂ (see FIG. 3) formed between the floor slab 1 and the cured product 3 can be easily suppressed. In the present embodiment, the lower end opening of the pipe through hole 3 a of the cured product 3 that is not used is closed by the receiving member 2. For this reason, even if there is an unnecessary piping through hole 3a in the cured product 3, there is no functional problem. It is also possible to seal in advance the piping through hole 3a that is not used. Moreover, it is also possible to make the opening part 2a of the receiving member 2 and the piping through-hole 3a of the hardened | cured material 3 into the same number, and it has a one-to-one correspondence.

  Moreover, if the material which forms the curable material M and the hardened | cured material 3 is each made from a nonflammable material like the construction method of this embodiment, it can each construct | assemble a piping system which is excellent in fire resistance and a construction trace is not conspicuous. . In particular, as in the construction method of the present embodiment, when mortar is used as the hardened material M to be filled, it has excellent fluidity and is optimal for backfilling. Moreover, when using mortar as a material which forms the hardened | cured material 3 like the construction method of this embodiment, since it is excellent in fluidity | liquidity, the hardened | cured material 3 is easy to manufacture.

  The receiving member 2 can be configured as a frame member so that the cured product 3 is not dropped off. Moreover, if the receiving member 2 is used as in this embodiment, leakage can be easily prevented during construction. For example, the receiving member can be obtained by fitting or bonding the cured product 3 to the through hole 1a. It is also possible to construct without using 2.

  Moreover, in the construction method of this embodiment, it has the process of arrange | positioning the thermally expansible fireproof member 5 around the soot pipe 4a as above-mentioned. In this case, it is possible to construct a piping system that can prevent the spread of fire from the piping through hole 3a during a fire. In the construction method of this embodiment, as shown in FIG. 3, the thermally expandable refractory member 5 is arranged so as to protrude from the upper surface of the floor slab 1. In this case, after the curable material M is cured and the cured product 3 is fixed together with the tub tube 4a, the thermally expandable refractory member 5 can be viewed from the outside of the fixing member 6 described later.

<Piping system>
FIG. 4 is a piping system according to an embodiment of the present invention. The piping system according to the present embodiment is constructed using the construction method. Therefore, in the following description, parts substantially the same as the members and materials described in FIGS. The piping system according to this embodiment includes at least a floor slab 1 in which a through hole 1a is formed, a plurality of siphon drain pipes 4, and a plurality of pipe through holes 3a that pass through the siphon drain pipes 4 one by one. A plurality of hardened products 3 corresponding to the number of siphon drain pipes 4 are provided, and a fixing member 6 that fixes the plurality of siphon drain pipes 4 together with the hardened material 3 to the inside of the through hole 1a. The fixing member 6 is made of a hardening material M filled from the upper side of the through hole 1a of the floor slab 1, and the hardening material M is hardened. Further, as shown in FIG. 4, the thermally expandable fire-resistant member 5 can be visually recognized from the outside by partially protruding from the fixing member 6.
In consideration of being placed at a position that may be visually recognized by the user of the building, by removing the receiving member 2 from the state of FIG. 4, only the receiving member 2 is removed after construction. May be.

According to the piping system of this embodiment, when filling the through hole 1a of the floor slab 1 through which the vertical pipes 4a of the plurality of siphon drain pipes 4 are filled, the gap S ₁ formed between the vertical pipes 4a. Construction is possible while suppressing leakage of the cured material from

Further, the piping system of the present embodiment, the floor slab 1, by having the receiving member 2 for receiving a cured product 3, the curable material from the gap S ₂ formed between the floor slab 1 and the cured product 3 M It is possible to perform construction while easily suppressing the leakage.

  Moreover, since the hardened | cured material 3 and the fixing member 6 are each formed with the nonflammable material, the piping system of this embodiment is excellent in fire resistance and can be constructed with less noticeable construction marks. In particular, in the piping system of the present embodiment, the cured product 3 and the fixing member 6 are each formed of a cement-based material, particularly mortar, so that the cured product 3 can be easily manufactured. In addition, since the fixing member 6 is excellent in fluidity, optimal backfilling is possible. Furthermore, in the piping system of the present embodiment, the cured material 3 that forms the cured product 3 and the cured material M that fills the inside of the through hole 1a are of the same quality. And has an excellent appearance.

  Moreover, since the heat-expandable fireproof member 5 is arranged around the soot pipe 4a of the siphon drain pipe 4 in the piping system of the present embodiment, it is possible to prevent the fire spreading from the pipe through-hole 3a during a fire.

Here, the function of the heat-expandable fireproof member 5 will be described with reference to FIGS.
In the example shown in FIG. 3, as shown in FIG. 5A, the heat-expandable refractory member 5 is formed on the dredging pipe 4 a of the siphon drain pipe 4 and the cured product 3 before the occurrence of a fire (before heating). It arrange | positions between the inner peripheral surface which forms the pipe through-hole 3a which was. At this time, when a fire (heating) occurs and a certain time has elapsed, as shown in FIG. 5B, the thermally expandable refractory member 5 expands inside the pipe through-hole 3a and siphon drain pipe 4 The crushing tube 4a starts to be crushed from the outside. When a certain time elapses after the occurrence of a fire (heating), as shown in FIG. 5 (c), the thermally expandable refractory member 5 that has expanded inside the pipe through-hole 3 a becomes the dredge 4 a of the siphon drain pipe 4. Then, the pipe through hole 3a is completely blocked by contacting each other. By shutting off the siphon drain pipe 4 in this way, the two sections of the upper and lower floors partitioned by the floor slab 1 can be used as fire prevention sections. In this case, even if the pipe through hole 3a penetrates the floor slab 1, it is possible to prevent the spread of fire between the two sections of the upper and lower floors.

  As described above, according to the present invention, when filling the through hole 1a of the floor slab 1 through which the plurality of siphon drain pipes 4 are penetrated, the construction method of the piping system in which leakage of the curable material M is suppressed, and When the through hole 1a of the floor slab 1 through which the plurality of siphon drain pipes 4 are filled, a piping system that can be constructed while suppressing leakage of the curable material M can be provided.

  The above description is only one embodiment of the present invention, and various modifications can be made according to the scope of the claims. For example, the siphon drain pipe 4 may be plural, and the number is not particularly limited. Moreover, in this embodiment, it demonstrated by making 2 divisions of an upper and lower floor into a fire prevention division, However, Fire construction is applied to the upper and lower divisions of 2 divisions or more by constructing the piping system according to this embodiment for each floor, respectively. It can be a compartment. In the present embodiment, the pipe has been described as the siphon drain pipe 4. However, the pipe is not particularly limited as long as it is a pipe that allows a fluid to circulate in the internal passage of the pipe, such as a normal water pipe and a water pipe. Moreover, although this embodiment demonstrated in collective housing, it is applicable to various buildings, such as a general building. Further, in the case of assuming a fire-proof section as in the present embodiment, it is preferable to follow the laws and regulations etc. when there is a designation by law or the like regarding the selection of non-combustible materials.

  The present invention can be applied to various piping systems as long as it is a construction method and piping system for a piping system in which a plurality of pipes are fixed using a hardened material inside through holes formed in a floor slab.

DESCRIPTION OF SYMBOLS 1 Floor slab 1a Through hole 2 Receiving member 2a Opening part 3 Hardened | cured material 3a Piping through hole 4 Siphon drain pipe (pipe)
4a Steel pipe (pipe)
4b Horizontally drawn pipe (pipe)
5 Thermally expandable refractory member 6 Fixed member

Claims (10)

It is a construction method of a piping system in which a plurality of pipes are fixed using a hardened material inside through holes formed in a floor slab,
Using the hardened material in which a plurality of pipe through holes are formed, the floor slab together with the hardened material in the state in which the plurality of pipes are passed through each of at least the plurality of pipe through holes. Placing the inside of the through hole formed in,
Filling the curable material inside the through-hole formed in the floor slab;
Attaching the receiving member for receiving the cured product, which can close the through-hole to the floor slab;
I have a,
The piping system construction method , wherein the cured product has a thickness smaller than that of the floor slab .   The piping system construction method according to claim 1, wherein the curable material is a non-combustible material. 3. The piping system construction method according to claim 1, wherein the cured product is formed of a non-combustible material .   The construction method for a piping system according to any one of claims 1 to 3, wherein the cured material and the material forming the cured product are mortar.   The construction method for a piping system according to any one of claims 1 to 4, further comprising a step of disposing a thermally expandable refractory member around the piping. A floor slab in which through holes are formed, a plurality of pipes, a cured product in which a plurality of pipe through holes for penetrating the plurality of pipes one by one are formed at least for the number of the pipes, and the plurality of pipes the have a fixing member for fixing to the inside of the through hole formed in the floor slab together with the cured product,
The floor slab has a receiving member that can close the through hole and receives the cured product,
The said hardened | cured material is the piping system characterized by the thickness being smaller than the thickness of the said floor slab . Oite to claim 6, wherein the cured product are those formed with non-combustible material, the pipe system. According to claim 6 or 7, wherein the fixing member, and is formed with non-combustible material, the pipe system. The piping system according to any one of claims 6 to 8 , wherein the material forming the cured product and the material forming the fixing member are mortar. The piping system according to any one of claims 6 to 9 , wherein a thermally expandable fireproof member is disposed around the piping.

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