JP2002097760A - Terraced roof structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a terraced roof structure that can perform a series of following works without scaffolding: drain holes are provided to parapets which are vertically installed around the terraced roof, and drain pipes are also provided to them. In between the drain holes and the drains, the outside edge part of the roof is made watertight. SOLUTION: This invention relates to a terraced roof structure having following features: the parapet 4 connects a plurality of parapet blocks and drainage parapet blocks 6 having a drainage hole 65 in the lower part thereof. The drainage tube 7 is put through the drainage hole 65. Then the edge part outside the roof and the edge part inside the roof between the drainage hole 65 and the drainage tube 7 are made watertight. Under such condition, the drainage tube 7 is attached thereto. To form a flat roof structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat roof structure having a parapet around it. In particular, it relates to a flat roof structure suitable for a flat roof of a unit building.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Utility Model Publication No. 6-12099 (referred to as Conventional Example 1), the upper surface of a concrete flat roof, or a precast concrete plate, a lightweight cellular concrete plate, an ALC (autoclave). (Drite weight concrete) Sheets made of thermoplastic resin such as soft polyvinyl chloride are placed on the upper surface of the floor of a flat roof on which a board, plywood, etc. are attached, and on the inside of a parapet roof made of the same material standing around this floor. A structure of a flat roof provided with a waterproof sheet such as a vulcanized rubber sheet is known.

On the other hand, a unit building in which a building unit, a roof unit or a roof panel is manufactured at a factory, transported to a construction site, and assembled at the construction site has a short construction period,
And since it becomes a building with good precision, it is often used in houses and the like. In this unit building, the building units, roof units, or roof panels constituting the unit building are manufactured at a factory or the like and then transported to a construction site. Therefore, generally, JP-A-2000-11
As described in the embodiment of Japanese Patent Publication No. 0250 (referred to as Conventional Example 2), a roof unit or a roof panel with a flat roof having an ALC floor lighter than concrete is often used.

[0004] In this unit building, a plurality of roof units or roof panels, each of which is divided into a size that facilitates transportation of the roof, are mounted on the building unit at the time of construction. A boundary is formed. Therefore, in order to prevent rainwater from leaking from this boundary, usually, a plurality of roof units or roof panels are mounted on the building unit, and then a continuous waterproof sheet is mounted on the floor or the boundary of the roof unit or roof panel. It has a flat roof.

The ALC described in the prior art example 2
There is no parapet on the roof made of steel. In a flat roof without a parapet described in the conventional example 2, when a person climbs on the flat roof, there is a danger that the person will be blown off by wind or the like and fall from the flat roof. As described in (1), a flat roof having a parapet around it is often used.

[0006]

However, as described in the prior art example 1, if a parapet is provided in the periphery, trash such as fallen leaves and the like fall into a downspout that guides water such as rainwater falling on a flat roof to the ground. In case of an emergency where it becomes difficult for rainwater to flow from the downspout to the ground, or when it rains more than the capacity of the downpipe to drain the water due to torrential rain, etc. The problem is that rainwater accumulates on the flat roof. As a means for solving the problem in such an emergency, there is known a structure in which a drain hole is provided at a lower portion of the parapet to penetrate the parapet, and rainwater collected on a flat roof falls from the drain hole to the ground. .

Therefore, in order to construct a unit building having a flat roof, a parapet made of substantially the same material as the ALC or cellular concrete floor is erected around the flat roof of the unit building described in Conventional Example 2. Moreover, when this parapet was made a flat roof having a drain hole, the following problems were found. That is, in general, a roof unit or roof made of ALC or cellular concrete with a floor made of ALC or cellular concrete to reduce the weight of the roof unit or roof panel, and a parapet of the same material erected around the floor. In the panel, since frost damage occurs when rainwater or the like enters the inside, a waterproof coating is applied to the surface or a waterproof sheet is provided.

When a drain hole is provided in the ALC or cellular concrete parapet as described above,
Since it is extremely difficult to prevent water from entering the inside of the drain hole by waterproof coating or the like, it has been found that rainwater or the like enters the inside of the parapet through the drain hole, causing frost damage. did. This is a problem common not only to unit buildings but also to buildings having a flat roof with ALC or cellular concrete parapets.

In order to solve such a problem, a drainage pipe is inserted into the drainage hole, and a sealing material is provided between the drainage hole and the drainage pipe at a roof outer end portion or a roof inner end portion. The problem was solved by preventing water such as rainwater from entering the parapet from between the drain hole and the drain tube.However, a sealing material was provided at the roof outer end portion between the drain hole and the drain tube. In order to make it watertight, it is necessary to work from the outside of the roof. Since this work is performed at a high place, it is necessary to assemble a scaffold, and there is a problem that it is extremely expensive and involves danger.

Therefore, an object of the present invention is to provide a drainage hole in a parapet standing upright around a flat roof, attach a drainage pipe to the drainage hole, and place a drainage pipe between the drainage hole and the drainage pipe. The present invention is to provide a flat roof structure capable of performing a watertight work on a roof outer end portion of a roof without a scaffold.

[0011]

Means for Solving the Problems The present invention has been made to achieve the above-mentioned object, and the invention according to claim 1 is a flat roof structure having a parapet around it. And a drainage parapet block having a drainage hole at the bottom thereof are connected, and a drainage pipe is passed through the drainage hole, and a drainage pipe is provided between the drainage hole and the drainage pipe. The roof inner tip portion and the roof outer tip portion are attached in a watertight state.

According to the first aspect of the present invention, the roof inner end portion and the roof outer end portion between the drain hole and the drain tube are made watertight. The roof inner front end portion and the roof outer front end portion include the periphery of the front end within a range capable of closing between the drain hole and the drain tube. That is, the roof inner end portion and the roof outer end portion between the drainage hole and the drainage tube are not limited to the roof inner end portion and the roof outer end portion between the drainage hole and the drainage tube. There is another thing on the outside of the roof or outside extension of the roof between the drain hole and the drain tube, and by making this extension watertight, water will flow from between the drain hole and the drain tube. It includes a part that can be prevented from entering.

For example, a waterproof sheet is provided on the inside of the roof of a parapet, and a water drain pipe passes through the waterproof sheet. If the water drain pipe and the waterproof sheet are made watertight, a drain hole is formed from the inside of the roof. If water does not enter between the drain pipe and the drain pipe, this part is also included.

According to a second aspect of the present invention, there is provided a flat roof structure having a parapet around the parapet, wherein the parapet has a plurality of parapet blocks connected to a drain parapet block having a drain hole at a lower portion thereof. A waterproof sheet or a waterproof plate is attached to the inside of the roof of the drainage parapet block, and the drainage pipe comprises a roof outer drainage pipe and a roof inner drainage pipe, and the roof outer drainage pipe has a roof outer body, The roof inner drainage pipe includes a receiving flange provided at one end of the roof outer main body, and the roof inner drainage pipe includes a roof inner main body and a holding flange provided at one end of the roof inner main body. However, the inner surface of the roof of the receiving flange is brought into contact with the waterproof sheet or the waterproof plate, the outer body of the roof is passed through the drain hole of the drainage parapet block, and the outer body of the roof is removed. Attached in a watertight state between the root outer tip and the drainage hole of the drainage parapet block, and a position facing the center hole of the roof outer drainage pipe in contact with the waterproof sheet or waterproof plate. A hole is provided in the roof inner drainage pipe, and the roof inner drainage pipe allows the roof inner body to be inserted into the center hole of the roof outer drainage pipe via the waterproof sheet or the waterproof plate throughhole, and the holding flange and the roof outer drainage. The waterproof sheet or the waterproof plate is sandwiched between the receiving flange of the pipe and the holding flange and the waterproof sheet or the waterproof plate in a watertight state.

The waterproof sheet used in the second aspect of the present invention is a sheet impermeable to water, and is preferably a synthetic resin sheet such as a soft vinyl chloride resin sheet or a rubber sheet such as a synthetic rubber sheet. . The waterproof plate is a plate impermeable to water, and is preferably a metal plate, a metal plate whose surface is painted, or a metal plate coated with a synthetic resin or rubber.

According to the second aspect of the present invention, the waterproof sheet or the waterproof plate is sandwiched between the receiving flange of the roof outer drainage pipe and the holding flange of the roof inner drainage pipe. Alternatively, the waterproof sheet or the waterproof plate may be bonded to the receiving flange or the retaining flange, or the receiving flange and the retaining flange may be connected to each other with bolts and nuts across the waterproof sheet or the waterproof plate. Further, the roof inner body of the roof inner drainage pipe is inserted into the roof outer body of the roof outer drainage pipe, but it is preferable to prevent water from leaking from the roof inner body and the roof outer body. . As means for doing so, the outer peripheral surface of the roof inner main body and the inner peripheral surface of the roof outer main body may be brought into close contact with each other, or may be bonded with an adhesive, and a sealing material such as an O-ring may be used during this. It may be provided.

In addition, the space between the holding flange and the waterproof sheet or the waterproof plate is made watertight.
The holding flange and the waterproof sheet or the waterproof plate may be adhered with an adhesive, or the heated and heated holding flange may be pressed and welded to the waterproof sheet or the waterproof plate, or the waterproof sheet or the waterproof sheet may be used. The holding flange and the receiving flange sandwiching the plate may be connected with bolts and nuts. At this time, it is more preferable that a packing is interposed between the holding flange and the waterproof sheet or the waterproof plate.

The drainage parapet block used in the first and second aspects of the present invention is provided at a place where the drainage pipe is to be attached. Therefore, when only one drain pipe is required, one drain pipe block may be used, and when a plurality of drain pipes are provided, a plurality of drain pipes may be attached.

In the first and second aspects of the present invention, the parapet block and the drainage parapet block are connected, but there are various means for connecting. For example, unevenness may be provided on the side surface of the parapet block or the draining parapet block, and the unevenness may be fitted and connected, or the side surface of the parapet block or the draining parapet block may be bonded with cement mortar or an adhesive. Preferably, a connecting plate is attached to the inside surface of the roof of the parapet block, and the connecting plate is connected, which is preferable because it can be easily connected at the construction site.

That is, a third aspect of the present invention is the invention according to the first or second aspect, wherein the plurality of parapet blocks and the draining parapet blocks are each provided with a connecting plate on the inner surface of the roof. A plurality of parapet blocks and drain parapet blocks are connected by a plate.

The connecting plate used in the invention of claim 3 may be a metal plate or a wooden plate. The connecting plate may be attached to a parapet block or a draining parapet block as appropriate. For example, screw rods and anchor bolts are embedded in parapet blocks and drainage parapet blocks, and through holes are provided in the connection plate,
The screw rod or the anchor bolt may be penetrated through the hole, and a nut may be screwed into the penetrated screw rod or the anchor bolt and attached, or may be bonded with an adhesive.

Further, a means for connecting a plurality of parapet blocks or drainage parapet blocks with this connecting plate may be appropriate. For example, the connecting plate may be protruded from a side edge of the parapet block or the draining parapet block, and the protruding connecting plate may be superimposed and connected with a connecting tool such as a bolt, a nut or a screw, an adhesive, or the like. Then, a flange which is bent at substantially a right angle is provided on a side edge of the connecting plate, and the flanges of the connecting plates attached to the adjacent parapet block and the draining parapet block are abutted. The connection may be made with a connection tool such as a bolt / nut or a screw or an adhesive.

(Function) In the invention according to the first aspect, the parapet is formed by connecting a plurality of parapet blocks and a drain parapet block having a drain hole at a lower part thereof.
Since a drain pipe is passed through this drain hole, pits and other debris such as fallen leaves are clogged in the pit that guides water such as rainwater that has fallen on the flat roof to the ground, and rainwater flows from the pit to the ground. Even in difficult cases, such as when it rains more than the capacity of the downpipe to drain due to heavy rainfall, rainwater on the roof will drain through the drainpipe .
Therefore, water such as rainwater does not collect on the flat roof, and by seeing rainwater flowing out from the drain hole,
It can be confirmed that the downspout is clogged.

Also, the drain pipe is passed through the drain hole, and is attached with the roof inner end portion and the roof outer end portion between the drain hole and the drain tube being watertight. Therefore, water such as rainwater does not enter the parapet from between the drain pipe and the drain hole. Therefore, if the parapet is A
Even if it is made of LC or cellular concrete, no frost damage occurs.
In addition, since the parapet has a plurality of parapet blocks connected to a drain parapet block having a drain hole at the lower portion, a drain pipe is previously inserted into the drain hole of the drain parapet block when this parapet is constructed. Through
The roof outside portion between the drain pipe and the drain hole is made watertight, and the drain pipe parapet block with the drain pipe is connected to another parapet block to form a parapet, thereby draining the parapet. The roof outer part between the hole and the drain tube can be watertight.

Therefore, there is no need to form a scaffold on the roof outer end portion between the drain hole and the drain tube after the parapet is attached to make the roof watertight. In addition, since the construction to make the roof inner end portion between the drainage hole and the drainage pipe watertight can be performed even from the inside of the roof, the timing of the construction of the roof inner end portion is not particularly limited. For example, similarly to the roof outer end portion, it may be connected to another parapet block after being made watertight in advance, or the drain inner parapet block may be connected to another parapet block to be a parapet, and then the roof inner end portion may be watertight. You may.

According to the second aspect of the present invention, the parapet has a plurality of parapet blocks connected to a parapet block having a drain hole at a lower portion, and a waterproof sheet or a waterproof plate is provided inside the roof of the parapet block and the drain parapet block. It is attached. Then, the roof outer drainage pipe is attached with the roof inner side surface of the receiving collar abutting against a waterproof sheet or a waterproof plate and the roof outer body is passed through the drainage hole of the drainage parapet block, and the roof inner drainage pipe is installed. The drain pipe allows the roof inner body to be inserted into the center hole of the roof outer drain pipe through the through hole of the waterproof sheet or waterproof plate,
Since the waterproofing sheet or the waterproof plate is sandwiched between the holding flange and the receiving flange of the roof outer drainage pipe, the drainage pipe consisting of the roof outer drainage pipe and the roof inner drainage pipe, A parapet composed of a connected parapet block, drainage parapet block, and a waterproof sheet or a waterproof plate provided inside the roof penetrates.

Therefore, similarly to the first aspect of the present invention, the vertical gutter leading to the ground is filled with debris such as fallen leaves, and water such as rainwater falling on the flat roof hardly flows from the vertical gutter to the ground. However, even in the case of an emergency in which rain falls more than the capacity of the downspout due to torrential rain or the like, and rainwater accumulates on the flat roof, the rainwater on the flat roof flows out through the drain pipe.
In addition, since the roof outer drainage pipe is attached in a state where water is sealed between the tip of the roof outer body and the drainage hole of the drainage parapet block, the roof drainage pipe is located between the drainage hole and the drainage pipe. The outside tip of the roof is watertight. Further, the roof inner drainage pipe sandwiches the waterproof sheet or the waterproof plate between the holding flange and the roof outer drainage pipe receiving flange, and in a state in which the space between the holding flange and the waterproof sheet or the waterproof plate is watertight, Since it is attached, the roof inner end portion between the drainage hole and the drainage pipe is watertight. As described above, the roof inner end portion and the roof outer end portion between the drainage pipe composed of the roof inner drainage pipe and the roof outer drainage pipe and the water hole are watertight.

Since the roof outer end portion and the roof inner end portion between the drainage pipe and the drainage hole are watertight as described above, even if the parapet is made of ALC or aerated concrete, water such as rainwater is discharged. There is no intrusion into the inside of the parapet from between the drain hole and the drain pipe, and no frost damage occurs.

Further, the roof outer drainage pipe makes the roof inner surface of the receiving flange abut against a waterproof sheet or a waterproof plate, passes the roof outer body through the drainage hole of the drainage parapet block, Since it is installed in a watertight state between the outer tip portion and the drainage hole of the drainage parapet block, the roof outer body penetrates through the drainage hole of the drainage parapet block, and the roof of this roof outer body Watertight between the outer tip and the drainage hole of the drainage parapet block, and after attaching the roof outer drainage pipe, by connecting this drainage parapet block with drainage pipe to another parapet block, The roof outer part of the drain hole of the parapet can be made watertight from the inside of the roof. Therefore, it is not necessary to form a scaffold at the roof outer end between the drain pipe and the drain hole after the parapet is attached to make the roof watertight.

According to the third aspect of the present invention, the plurality of parapet blocks and the drainage parapet blocks are each provided with a connecting plate on the inner surface of the roof, and the connecting plates are connected to the plurality of parapet blocks and the draining parapet blocks. Therefore, the parapet is a parapet in which a plurality of parapet blocks and a drain parapet block are firmly connected.

[0031]

Next, embodiments of the present invention will be described with reference to examples. 1 to 15 show an embodiment in which the present invention is applied to a unit building, FIG. 1 is a perspective view showing a unit building, FIG. 2 is a partially cutaway perspective view showing a building unit without an outer wall panel, FIG. 3 is a perspective view showing a roof panel,
FIG. 4A is a perspective view showing a parapet block, and FIG.
5A is a cross-sectional view taken along line AA of FIG. 5A, FIG. 5A is a perspective view showing a drainage parapet block, FIG. 5B is a cross-sectional view taken along line BB of FIG. 5A, and FIG. A perspective view showing a roof outer drainage pipe, (b) is a front view of (a), FIG. 7 (a)
Is a perspective view showing a drain pipe inside the roof, (b) is a front view of (a), (c) is a side view of (a), FIG. 8 is a perspective view showing a general-part waterproof plate, and FIG. Is a perspective view showing a downspout connection part waterproof plate, (b) is a front view of (b), (c) is a side view of (b), (d) is a cross-sectional view taken along the line CC of (c), (E)
10 is a sectional view taken along line DD of FIG. 10C, FIG. 10 is a plan view showing the arrangement of roof panels, FIG. 11 is a sectional view taken along line EE of FIG. 10, and FIG. 12 is a line FF of FIG. 13 is a sectional view taken along line GG of FIG.
15 is a perspective view showing a state where a waterproof sheet is provided, and FIG. 15 is a view showing a state where a drain pipe is provided. FIG. 15 (a) is a perspective view showing a state where a roof drain drain pipe is attached to a drain parapet. (B) is a perspective view showing a state in which a roof outer end portion between a roof outer drainage pipe and a drainage hole is made watertight, (c) is a perspective view showing a state in which a drainage parapet is attached, (D) is a perspective view showing a state in which a roof inner drainage pipe is attached.

U is a unit building. As shown in FIG. 1, the unit building U has nine building units 1 mounted on a foundation 99 to form a first floor. 9 are installed on the first floor to form the second floor, and nine building units 1 are installed on the second floor of the building unit 1 to form the third floor. A flat roof R is provided on the building unit 1.

As shown in FIG. 2, the building unit 1 has four pillars 11 erected at four corners of a rectangular shape, and four floors connecting the lower ends of the pillars 11 along the sides of the rectangle. Beam 12,
Ceiling beam 13 connecting the upper end of pillar 11 along the side of the rectangle
And a skeleton consisting of

Then, an ALC board floor covering material 14 in which a reinforcing bar is laid is inserted across the opposite floor beams 12 of the skeleton,
The bolt / nut connected to the reinforcing bar and the floor beam 12 are connected by a connecting member, and the floor base material 14 is attached to the floor beam 12,
On this, a particle board long spacer 15 is attached, and a wooden floor joist 1 is placed on the spacer 15.
6 is attached, and a floor board 17 of a particle board is attached on the floor joist 16 to form a floor.

Further, a ceiling beam 18 is extended over the opposing ceiling beam 13, and the ceiling beam 18 is connected to the ceiling beam 13 via a steel plate mounting plate 18a. A ridge 19 is attached, and a gypsum board ceiling member 19a is attached to the lower surface of the ceiling ridge to form a ceiling. 11 and FIG.
As shown in FIG. 2, a refractory coating 13a is wound to improve the refractory performance.

In the building unit 1 having an outer wall, an outer wall panel 2 is attached to a ceiling beam 13 and a floor beam 12 at a place where the outer wall is provided. That is, as shown partially in FIGS. 11 and 12, the outer wall panel 2 has an upper part of an outer wall 21 of an ALC plate in which a reinforcing bar is embedded.
A ceiling beam mounting bracket 22 is provided, and a floor beam mounting bracket (not shown) is provided below. The ceiling beam mounting bracket 21 is mounted on the ceiling beam 13, the floor beam mounting bracket is mounted on the floor beam 12, and the outer wall panel 2 is mounted on the building unit 1.

As shown in FIG. 10, the flat roof R is composed of nine roof panels 3 and parapets 4 erected around the roof panels. As shown in FIG. 3, the roof panel 3 includes four short pillars 31 arranged at four corners of a rectangular shape, and four roof beams 32 connecting the short pillars 31 along the sides of the rectangle. Has a skeleton. Then, a floor material 33 of an ALC plate in which a reinforcing bar is buried is inserted between the opposed roof beams 32, and a receiving bracket 34 is provided.
It is fixed by. In addition, a refractory joint material is inserted into the gap of the floor material 33, and the gap is closed.

The parapet 4 is erected around the flat roof R, and comprises a number of parapet blocks 5 and two drain parapet blocks 6. The drainage parapet block 6 is to be attached to a place where the water accumulated on the flat roof R flows out, and an appropriate number may be provided. For example, the number may be one, two as in this embodiment, or three or more.

As shown in FIG. 4, the parapet block 5 has a reinforcing bar 511 embedded therein, and the connecting plate mounting bracket 51
2 comprises a main body 51 of an ALC plate embedded therein and a connecting plate 52 made of a vinyl chloride resin-coated steel plate. The connecting plate 52 has a flat connecting plate main body 521, a horizontal plate 523 bent substantially horizontally from the lower end of the connecting plate main body 521, and a substantially right angle at a position straddling the horizontal plate 523 from the connecting plate main body 521. And anti-slip 522 protruding from The anti-slip 522 is provided on both sides. Further, if necessary, as shown in FIG.
2 may be provided.

The anti-slip 522 on both sides is 2
A plurality of through holes 525 are provided, and can be connected to an adjacent parapet block 5 and a drain parapet block 6. The bolt 51 attached to the connection plate mounting bracket 512 is inserted into a through hole provided in the connection plate body 521.
3 and an anchor bolt 514 embedded in the main body 51 are passed therethrough. The bolt 513 and a nut 514 screwed into the anchor bolt 514 allow the connecting plate 52 to be connected to the main body 51.
It is attached to the inside surface of the roof.

As shown in FIG. 5, the drainage parapet block 6 comprises an ALC plate main body 61 in which a connecting plate mounting bracket 612 is embedded, and a connecting plate 62 made of a vinyl chloride resin-coated steel plate. The connecting plate 62 includes a connecting plate main body 621 and anti-skids 622 erected at substantially right angles on both sides of the connecting plate main body 621. And the anti-fall 62 on both sides
2 is provided with two through holes 625 so that it can be connected to the adjacent parapet block 5.

The bolt 6 attached to the connecting plate mounting bracket 612 is inserted into a through hole provided in the connecting plate body 621.
13 and an anchor bolt 614 embedded in the main body 61 are passed therethrough, and the connecting plate 62 is connected to the main body 61 by the nut 614 screwed into the bolt 613 and the anchor bolt 614.
It is attached to the inside surface of the roof. A drain hole 65 penetrating the main body 61 and the mounting plate 62 is provided at the lower end of the drain parapet 6.

Reference numeral 7 denotes a drainage pipe made of hard vinyl chloride resin. As shown in FIG. 12, the drainage pipe 7 includes a roof outer drainage pipe 71 and a roof inner drainage pipe 75. As shown in FIG. 6, the roof outer drainage pipe 71 includes a cylindrical roof outer main body 72 and a receiving flange 73 provided at the roof inner end of the roof outer main body 72. Roof outside body 72
Is composed of a short diameter portion 721 and a long diameter portion 722, and the short diameter portion 721 is inserted into the long diameter portion 722 and adhered with an adhesive. Note that the long diameter portion 722 and the receiving collar 73 are integrally manufactured.

As shown in FIG. 7, the roof inner drainage pipe 75 includes a cylindrical roof inner body 76 and the roof inner body 7.
6 and a holding flange 77 provided inside the roof. The roof inner body 76 has a size that can be inserted into the long diameter portion 722 of the roof outer drainage pipe 71. Reference numeral 8 denotes a waterproof plate made of a steel plate coated with a Birni chloride resin.

As shown in FIG. 8, the general waterproof panel 81 is
Upper horizontal part 8 formed by bending a polyvinyl chloride resin-coated steel sheet into a Z shape
2, a vertical portion 83 and a lower horizontal portion 84. As shown in FIG. 9, the gutter connection portion waterproof plate 85 is composed of an upper horizontal portion 86, a vertical portion 87, and a lower horizontal portion 88, which are almost the same as the general portion waterproof plate. A central portion is recessed rearward, a central portion of the lower horizontal portion 88 is recessed downward, and a through hole is provided in a substantially central lower surface of the recessed lower horizontal portion 88, and a peripheral portion of the through hole is provided. Is different in that a downspout connection pipe 89 is attached. Reference numeral 9 denotes a waterproof sheet made of a soft vinyl chloride resin having a thickness of about 2 mm.

The flat roof R is the pillar 1 of the building unit 1 on the third floor.
The short columns 31 of the roof panel 3 are placed on the
As shown in FIG. 14, a roof panel 3 is mounted on the building unit 1, a heat insulating material 95 of polystyrene foam is laid on the nine roof panels 3, and a waterproof sheet 9 is laid thereon. And a parapet 4 standing upright around the floor.

Then, at the connection part of the roof panel 3 adjacent to the floor, as shown in FIG. 13, the receiving metal fitting 58 is attached to the roof beam 32 of the roof panel 3 and the fireproof heat insulating material 96 of rock wool is adjacent. A steel plate 97 is bridged between the roof beams 32 and the metal fittings 58 and attached to the heat insulating material 95 of the roof panel 3 of the adjacent roof panel 3. Then, the waterproof sheet 9 is laid on the heat insulating material 95 of one roof panel 3, through the steel plate 97, and on the extinct material 95 of the other roof panel 3.

A parapet block 5 is mounted around the flat roof R, and a drain parapet block 6 is mounted side by side where the drain hole 65 is provided.
As shown in FIG. 11, the rosette block 5 is configured such that the horizontal plate 523 of the parapet block 5 is bolted to the roof beam 32.
The nut 531 is connected to the receiving bracket 58 connected to the roof beam 32 with a bolt / nut 532. Then, the adjacent parapet blocks 5 are connected to the two through holes 52 shown in FIG.
5 are connected by bolts and nuts 529.

The drain hole 65 is formed by inserting the drain parapet block 6 between the parapet blocks 5 as shown in FIG.
As shown in FIG. 4, the anti-slip 622 provided on both sides of the drainage parapet block 6 and the anti-skid 522 of the parapet block 5 are connected to the through holes 52 shown in FIGS. 4 and 5.
5 and 625 are connected by bolts and nuts 529. Then, a general waterproof plate 81 is attached so as to cover from above the parapet block 5 and the drainage parapet block 6 to the heat insulating material 95 of the roof panel 3 through the inner surface of the roof.

In addition, between adjacent roof panels 3,
At the place where the downspout is attached, a downspout connection waterproof plate 85 is attached in place of the general waterproof plate 81.
A downspout (not shown) is attached to the downspout connection pipe 89. This downspout reaches the ground through between adjacent building units 1. A waterproof sheet 9 laid on a heat insulating material 95 is superimposed on the lower horizontal portion 84 of the general waterproof plate 81 and the lower waterproof portion 88 of the downspout connection waterproof plate 85 and bonded with an adhesive. It is designed to prevent rainwater from leaking from this part.

On the upper horizontal portion 82 of the general waterproof plate 81 and the upper horizontal portion 86 of the gutter connection plate 85 placed above the parapet block 5 and the drainage parapet block 6,
A batten 48 is placed, and on top of this, a kasagi 49 is a screw 491
Installed with. In addition, the roof outer body 72 of the roof outer drainage pipe 71 is passed through the drainage hole 65 of the drainage parapet block 6, and the receiving flange 73 of the roof outer drainage pipe 71 is connected to the vertical portion 83 of the general waterproof plate 81. Is in contact with Further, a sealing material 69 is injected between the roof outer end portion of the roof outer main body 72 and the drainage hole 75 to make this portion watertight.

A through hole is provided in the vertical portion 83 of the general waterproof plate 81 facing the center hole of the roof outer drainage pipe 71, and the roof inner main body 76 of the roof inner drainage pipe 75 passes through the vertical portion 83. It is inserted into the roof outer body 72 of the roof outer drainage pipe 71 through the hole, and the holding flange 77 of the roof inner drainage pipe 75 is adhered to the indoor surface of the vertical portion 83 of the general waterproof plate 81. Is watertight.

Next, the construction method of the unit building U and the operation of the flat roof R will be described. At the factory, as shown in FIG. 2, four pillars 11 are erected at four corners of a rectangular shape, and the lower ends of the pillars 11 are connected by four floor beams 12 along the sides of the rectangle. Are connected by ceiling beams 13 along the sides of the rectangle to produce the framework of the building unit.

Then, a floor base material 14 is inserted into the opposite floor beams 12 of the skeleton, the floor base material 14 is attached to the floor beams 12, a spacer 15 is mounted thereon, and a floor joist 16 is mounted on the spacer 15. A floor member 17 is mounted on the floor joist 16 to form a floor, a ceiling beam 18 is inserted between the opposing ceiling beams 13, and the ceiling beam 18 is connected to the ceiling beam 13 via an attachment plate 18 a. A ceiling edge 19 is attached to the lower side of the ceiling beam 18, and a ceiling material 19a is attached to the lower surface of the ceiling edge to form a ceiling.
1. As shown in FIG. 12, a fireproof coating 1
When winding the 3a, forming the ceiling and performing various finishes,
The building unit 1 is completed. In the place where the outer wall is provided,
The outer wall panel 2 is extended and attached to the ceiling beam 13 and the floor beam 12 to manufacture the building unit 1 having the outer wall.

As shown in FIG. 3, four corners of a rectangular
The short pillars 31 are arranged, and the short pillars 31 are connected along four sides of the rectangle by four roof beams 32.
The flooring material 33 is passed over the
The roof panel 3 is manufactured by inserting a refractory joint material into the gap 3.

As shown in FIG. 4, the connecting plate 52 is connected to the main body 51 to produce the parapet block 5, and the horizontal plate 523 of the parapet block 5 is connected to the roof beam 32 with bolts and nuts 531. , This roof beam 32
Bolts and nuts 532
, The parapet blocks 5 are erected, and the adjacent parapet blocks 5 are connected to each other by bolts and nuts 529 passed through two through holes 525 of the stopper 522 provided on both sides. The parapet block 5 is attached to a predetermined position on the roof panel 3.

Further, as shown in FIG. 5, a connecting plate 62 is attached to the main body 61, and a drain hole 65 penetrating from the main body 61 to the mounting plate 62 is provided at the lower end to manufacture the drain parapet 6. In addition, the roof outer drainage pipe 71, the roof inner drainage pipe 75, the general waterproof plate 81, the gutter connection waterproof plate 85, the waterproof sheet 9 and the like are transported to the construction site.

At the construction site, a foundation 9 provided in advance is provided.
9, nine building units 1 are installed on the first floor to form a first floor, and nine building units 1 are installed on the first floor building unit 1 to form a second floor. 13, nine building units 1 are installed to form a third floor. On this third floor building unit 1, a roof panel 3 with a parapet block 5 is attached, a drainage parapet 6 is attached, and a waterproof sheet 9 is attached. Laying, this 3
When a flat roof R is provided on the building unit 1 on the floor, and various finishing operations such as wiring and piping between the adjacent building units 1 are performed, the unit building U is completed.

Regarding the method of providing the flat roof R at this time,
This will be described in detail. First, pillar 11 of building unit 1 on the third floor
The short pillars 31 of the roof panel 3 are placed on the roof unit 3, and the roof panel 3 is mounted on the building unit 1. Next, as shown in FIG. 13, the receiving metal fittings 58 are attached to the roof beams 32 of the roof panel 3, and a fire-resistant heat insulating material 96 is attached over the adjacent roof beams 32 and the receiving metal fittings 58. A steel plate 97 is mounted over the heat insulating material 95 of the roof panel 3.

As shown in FIG. 15A, the roof outer body 72 of the roof outer drainage pipe 71 is inserted into the drain hole 65 of the drain parapet block 6, and as shown in FIG. A sealing material 69 is injected between the tip of the roof outer body 72 and the drain hole 65 to make this portion watertight.
Note that, at this time, the receiving flange 73 of the roof outer drainage pipe 71 is made to protrude to the height of the stopper 622 of the drainage parapet block 6.

The drainage parapet block 6 to which the roof outer drainage pipe 71 is attached in this manner is connected to the drainage parapet block 6 shown in FIG.
As shown in (c), it is inserted between the parapet blocks 5 and the anti-slip 62 on both sides of the drainage parapet block 6.
The draining parapet block 6 and the parapet block 5 are connected to each other with the bolts and nuts 529 passed through the through-holes 625 of the anti-tumbling 622 and the through-holes 525 of the anti-tumbling 522. I do.

As described above, the stopper 522 of the connecting plate 52 of the parapet block 5 and the stopper 622 of the connecting plate 62 of the drainage parapet block 6 serve as the bolts and nuts 52.
9, the parapet block 5 and the drainage parapet block 6 are firmly connected. The steps up to the step of attaching the drainage parapet block 76 may be performed at a factory.

Next, a general waterproof plate 81 is attached so as to cover from above the parapet block 5 and the draining parapet block 6 to the heat insulating material 95 of the roof panel 3 through the roof inner surface. At this time, the vertical portion 83 of the general waterproof plate 81 is brought into contact with the anti-slip 622 of the parapet block 5. Then, since the receiving flange 73 of the roof outer drainage pipe 71 protrudes to the height of the stopper 622 of the drainage parapet block 6, the roof outer surface of the vertical portion 83 of the general waterproof plate 81 contacts the receiving flange 73. . If necessary, this receiving collar 73
And the roof outer surface of the general waterproof plate 81 are bonded with an adhesive.

The vertical portion 83 of the general waterproof plate 81 is provided with a through hole 831 at a position facing the center hole of the roof outer drainage pipe 71 abutting on the receiving flange 73 of the roof outer drainage pipe 71.
Is provided. Further, between the adjacent roof panels 3 and at the place where the downspout is to be attached, a downspout connection waterproof plate 85 is attached in place of the general waterproof plate 81, and the downspout waterproof plate 85 is attached.
A downspout (not shown) is attached to the downspout connection pipe 89.

Then, as shown in FIG. 15D, the roof inner body 76 of the roof inner drainage pipe 75 is inserted into the roof outer drainage pipe 71 from the through hole 831, and the receiving flange 73 and the holding flange 77 are inserted. Thus, the periphery of the through hole 831 of the general waterproof plate 81 is sandwiched, and the pressing flange 77 and the periphery of the through hole 831 are bonded with an adhesive to make this portion watertight. Then, the joint between the adjacent waterproof plates is sealed with a waterproof tape or the like. If the drainage pipe 75 on the inside of the roof is made of metal, the holding flange 77 of the drainage pipe 75 on the inside of the roof is heated.
With this heat, the vinyl chloride resin that covers the periphery of the through hole 831 of the general waterproof plate 81 may be melted and welded.

When the roof inner body 76 of the roof inner drain pipe 75 is inserted into the roof outer body 72 of the roof outer drain pipe 71, the roof inner drain pipe 7
An adhesive may be applied to the outer peripheral surface of the roof inner body 76 of the fifth embodiment, and the roof inner body 76 and the roof outer body 72 may be bonded.

With this construction, before the drainage parapet block 6 is connected to the parapet block 5, the roof outer body 72 is passed through the drainage hole 65 of the drainage parapet block 6, and the roof outer body 72 and the drainage body are drained. Since the roof outer end between the parapet block 6 and the drain hole 65 is made watertight, there is no need to make the drain pipe 7 end watertight after the parapet 4 is attached. Therefore, it is not necessary to form a scaffolding despite the construction in which the roof outer end portion between the drainage hole 65 and the drainage pipe 7 of the drainage parapet block 6 at a high place above the third floor is made watertight. It is convenient.

Thereafter, as shown in FIG. 14, the waterproof sheet 9 is laid on the heat insulating material 95 of the roof panel 3 or on the steel sheet 97 between the building units 1 as shown in FIG.
Then, the waterproof sheet 9 is polymerized at the connection portion of the waterproof sheet 9, and is polymerized on the waterproof plate 8 at the periphery of the waterproof sheet 9, and an adhesive is injected into the polymerized portion with a syringe, and this portion is bonded. I do.

Next, the batten 48 is placed on the upper horizontal portion 82 of the general waterproof plate 81 and the upper horizontal portion 86 of the downspout connection plate 85 which are placed above the parapet block 5 and the drainage parapet block 6. The roof roof R is completed by attaching a cover 49 with screws 491 or performing various finishings thereon.

In the land roof R completed in this manner, the roof outer drainage pipe 71 makes the roof inner side surface of the receiving flange 73 abut against the waterproof plate 8, and the roof outer main body 72 is connected to the drainage hole of the drainage parapet block. The roof inner drainage pipe 75 is inserted into the center hole of the roof outer drainage pipe 71 through the through hole of the waterproof plate 8, and is attached to the roof inner drainage pipe 75. Since the waterproof plate 8 is attached to the receiving flange 73 of the roof outer drainage pipe 771 with the waterproof plate 8 interposed therebetween, the drainage pipe 7 composed of the roof outer drainage pipe 71 and the roof inner drainage pipe 75 is The parapet 4 penetrates a parapet block 5, a drain parapet block 6, and a waterproof plate 8 provided inside the roof.

Accordingly, pits or the like that lead to water, such as rainwater, that has fallen on the roof R, are clogged with debris, such as fallen leaves, and it is difficult for rainwater to flow from the pit to the ground. Rain water exceeds the capacity of flowing water, and in case of emergency where rain water cannot be drained to the ground by the downspout and rain water accumulates on the roof R, this rain water passes through the drain pipe 7 Runoff does not collect rainwater on the flat roof R.

Further, since the roof outer drainage pipe 71 is attached in a watertight state between the tip portion of the roof outer main body 72 and the drainage hole 65 of the drainage parapet block 6, the roof outer drainage pipe 71 is provided. The roof outer end portion between the drain pipe 71 and the drain hole 65 is watertight. In addition, the roof inner drainage pipe 75 sandwiches the waterproof plate 8 between the holding flange 77 and the receiving flange 73 of the roof outer drainage pipe 71, and makes the space between the holding flange 77 and the waterproof plate 8 watertight. , The roof inner front end portion between the roof inner drainage pipe 75 and the drainage hole 65 is watertight.

As described above, the drainage pipe 7 composed of the roof inner drainage pipe 75 and the roof outer drainage pipe 71 and the drainage hole 65 are provided.
The roof inner end portion and the roof outer end portion are watertight, so that rainwater or the like drains the drainage pipe 7 and the drainage hole 65 even if the parapet 4 is made of ALC or foam concrete.
There is no intrusion into the inside of the parapet from between and no frost damage occurs.

[0074]

According to the first aspect of the present invention, the parapet is formed by connecting a plurality of parapet blocks and a draining parapet block having a drain hole at a lower portion, and a drain pipe is provided through the drain hole. It is difficult for rainwater to flow to the ground from the downspout, and rain falls more than the capacity of the downpipe to drain water from the downspout due to heavy rain, etc. Even in an emergency where rainwater accumulates,
The rainwater on the flat roof flows out through the drainage pipe, and water such as rainwater does not accumulate on the flat roof. Also, since the drainage pipe is passed through the drainage hole, and the roof inner distal end portion and the roof outer distal end portion between the drainage hole and the drainage pipe are mounted in a watertight state, Water such as rainwater does not enter the parapet, and frost damage does not occur even if the parapet is made of ALC or cellular concrete.

Since the parapet is composed of a plurality of parapet blocks and a drain parapet block having a drain hole at the lower part, the drainage of the drain parapet block must be performed before the parapet is constructed. The drainage pipe is passed through the hole, the roof outer part of the drainage pipe is kept watertight, and the drainage parapet block with the drainage pipe is connected to another parapet block to form a parapet, so that the water of the parapet is drained. The gap between the roof outer portion of the drain hole and the drain tube can be made watertight. Therefore, it is not necessary to form a scaffold at the roof outer end between the drain pipe and the drain hole after the parapet is attached to make the roof watertight.

According to a second aspect of the present invention, the roof outer drainage pipe has the roof inner surface of the receiving flange abutted against a waterproof sheet or a waterproof plate, and the roof outer body is passed through the drainage hole of the drainage parapet block. The roof inner drainage pipe is installed in the condition, the roof inner drainage pipe is inserted into the center hole of the roof outer drainage pipe through the through hole of the waterproof sheet or waterproof plate, and the holding flange and the roof outer drainage pipe are inserted. Since the waterproof sheet or the waterproof plate is sandwiched between the receiving flanges, the drain pipe formed of the roof outer drain pipe and the roof inner drain pipe penetrates the parapet. Therefore, similarly to the invention according to claim 1, pits and the like such as fallen leaves are clogged in the downspout that guides water such as rainwater that has fallen on the flat roof to the ground, and it becomes difficult for rainwater to flow from the downspout to the ground, Even in an emergency, such as when the rain falls more than the capacity of the downspout due to torrential rain and the rainwater accumulates on the flat roof, the rainwater flows through the drainpipe and the rainwater flows over the flat roof. Does not accumulate.

Further, a roof outer drainage pipe penetrating the drainage parapet block is attached in a state where the space between the distal end portion of the roof outer body and the drainage hole of the drainage parapet block is made watertight. Therefore, the roof outer end portion between the roof outer drainage pipe and the drainage hole is watertight. Further, the roof inner drainage pipe sandwiches the waterproof sheet or the waterproof plate between the holding flange and the roof outer drainage pipe receiving flange, and in a state in which the space between the holding flange and the waterproof sheet or the waterproof plate is watertight, Since it is attached, the roof inner end portion between the roof inner drainage pipe and the drainage hole is watertight.

As described above, since the roof inner end portion and the roof outer end portion between the drainage pipe formed by the roof inner drainage pipe and the roof outer drainage pipe and the drainage hole are watertight, the parapet is removed. Is made of ALC or foam concrete,
Water such as rainwater does not enter the inside of the parapet from between the drain pipe and the drain hole, and no frost damage occurs.

Further, the roof outer drainage pipe makes the roof inner side surface of the receiving flange abut against a waterproof sheet or a waterproof plate, passes the roof outer body through the drainage hole of the drainage parapet block, and connects the roof outer body to the roof outer drainage pipe. Since it is installed in a watertight state between the outer tip and the drainage hole of the drainage parapet block, at the time of construction, the roof outer body is passed through the drainage hole of the drainage parapet block and this roof outer body is installed. After making the roof outer end between the drainage hole and the drainage hole of the drainage parapet block watertight, this drainage parapet block with drainage pipe is connected to another parapet block to drain the parapet from inside the roof. The roof outer portion of the hole can be watertight. Therefore, it is not necessary to form a scaffold at the tip of the drain pipe after the parapet is attached to make it watertight.

According to a third aspect of the present invention, the plurality of parapet blocks and the drainage parapet blocks each have a connecting plate attached to the inner surface of the roof, and the connecting plates connect the plurality of parapet blocks and the draining parapet blocks. Therefore, a plurality of parapet blocks and a drainage parapet block are strongly connected to each other.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment in which the present invention is applied to a unit building, showing the unit building.

FIG. 2 is a partially cutaway perspective view showing a building unit without an outer wall panel.

FIG. 3 is a perspective view showing a roof panel.

FIG. 4A is a perspective view showing a parapet block,
(B) is a sectional view taken along line AA of (A).

5A is a perspective view showing a drainage parapet block, and FIG. 5B is a cross-sectional view taken along line BB of FIG. 5A.

FIG. 6A is a perspective view showing a roof outer drainage pipe,
(B) is a front view of (A).

FIG. 7A is a perspective view showing a roof drainage pipe,
(B) is a front view of (A), and (C) is a side view of (A).

FIG. 8 is a perspective view showing a general waterproof panel.

FIG. 9A is a perspective view showing a downspout connecting portion waterproof plate,
(B) is a front view of (b), (c) is a side view of (b),
(D) is a cross-sectional view taken along line CC of (c), and (e) is a cross-sectional view taken along line DD of (c).

FIG. 10 is a plan view showing an arrangement of a land panel.

11 is a sectional view taken along line EE in FIG.

FIG. 12 is a sectional view taken along line FF in FIG. 10;

FIG. 13 is a sectional view taken along line GG of FIG. 10;

FIG. 14 is a perspective view showing a state where a waterproof sheet is provided.

FIG. 15 shows a state in which a drain pipe is provided.
(A) is a perspective view showing a state in which a roof outer drainage pipe is attached to the drainage parapet, and (B) is a state in which the roof outer end between the roof outer drainage pipe and the drainage hole is made watertight. (C) is a perspective view showing a state where a drainage parapet is attached, and (D) is a perspective view showing a state where a roof inner drainage pipe is attached.

[Explanation of symbols]

 U unit building R flat roof 1 building unit 3 roof panel 4 parapet 5 parapet block 51 main body 52 connecting plate 6 draining parapet block 61 main body 62 connecting plate 65 drain hole 7 drain pipe 71 roof drain drain pipe 73 receiving flange 75 roof Inner drainage pipe 77 Holding flange 8 Waterproof plate

Claims (3)

[Claims] 1. A flat roof structure having a parapet around the parapet, wherein the parapet is formed by connecting a plurality of parapet blocks and a drain parapet block having a drain hole at a lower portion thereof, and the drain pipe is formed by a drain pipe. A flat roof structure which is passed through a drain hole and is attached with the roof inner end portion and the roof outer end portion between the drain hole and the drain tube being watertight. 2. A flat roof structure having a parapet around the parapet, wherein the parapet includes a plurality of parapet blocks and a drain parapet block having a drain hole at a lower portion thereof, and the parapet block and the drain parapet block are connected to each other. A waterproof sheet or a waterproof plate is attached to the inside of the roof, and the drainage pipe includes a roof outer drainage pipe and a roof inner drainage pipe, and the roof outer drainage pipe includes a roof outer body,
The roof inner drainage pipe comprises a receiving flange provided at one end of the roof outer body, and the roof inner drainage pipe comprises a roof inner body and a holding flange provided at one end of the roof inner body. However, the inner surface of the roof of the receiving flange is brought into contact with the waterproof sheet or the waterproof plate, the outer body of the roof is passed through the drain hole of the drain drain parapet block, and the roof outer tip portion of the roof outer body and the drain drain parapet block are removed. The waterproof sheet or waterproof plate is provided with a through hole at a position facing the center hole of the roof outer drainage pipe in contact with the waterproof sheet or the waterproof plate, and the roof inner side is provided in a watertight state. The drain pipe allows the roof inner body to be inserted into the center hole of the roof outer drain pipe through the through hole of the waterproof sheet or waterproof plate, and the waterproofing sheet or waterproof is provided by the holding flange and the roof outer drain pipe receiving flange. Hold the plate and hold down Flat roof structure, characterized in that between the waterproof sheet or waterproof plate in a state in which the watertight mounted. 3. The plurality of parapet blocks and the draining parapet blocks are each provided with a connecting plate on the inner surface of the roof, and the connecting plates are connected to the plurality of parapet blocks and the draining parapet blocks. The flat roof structure according to claim 1 or 2, wherein: