JP5566742B2 - Water gradient layer thickness measurement method and waterproof sheet construction method - Google Patents
Water gradient layer thickness measurement method and waterproof sheet construction method Download PDFInfo
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Description
本発明は、フラットなスラブに対し水勾配を有する発泡性合成樹脂板が敷設されて水勾配層が構成された陸屋根における、水勾配層の厚さ測定方法及び防水シートの施工方法に関するものである。 The present invention relates to a method for measuring the thickness of a water gradient layer and a method for constructing a waterproof sheet on a flat roof in which a foamable synthetic resin plate having a water gradient is laid on a flat slab to form a water gradient layer. .
従来より、例えばＡＬＣ（軽量気泡コンクリート）パネルによって形成されたフラットなスラブ（陸屋根）に防水処理を施す方法として、特許文献１に記載のように、スラブにフラットな発泡性合成樹脂板と上面に所定の角度の傾斜面が形成された発泡性合成樹脂板とを組み合わせて配置することによって片流れ屋根状あるいは両流れ屋根状に水勾配層を形成し、その上面にいわゆる絶縁工法にて防水シートを敷設する方法がある。 Conventionally, as a method for waterproofing a flat slab (land roof) formed of, for example, an ALC (lightweight cellular concrete) panel, as described in Patent Document 1, a flat foamable synthetic resin plate and an upper surface are provided on the slab. A water gradient layer is formed in a single-flow roof shape or a double-flow roof shape by arranging in combination with a foamable synthetic resin plate having an inclined surface of a predetermined angle, and a waterproof sheet is formed on the upper surface by a so-called insulation method. There is a way to lay.
絶縁工法とは、例えば特許文献２に記載のように、所定の間隔で円形の防水鋼板（表面に防水シート片が固着された防水鋼板）をビスにて固定し、屋根周縁部には断面Ｌ字状の長尺の防水鋼板をビス固定し、これらの防水鋼板に防水シートを溶着や融着等の手段にて防水鋼板に対し固着することで、温度変化による防水シートの伸縮を許容し、防水シートの性能を維持しようとする工法である。 For example, as disclosed in Patent Document 2, a circular waterproof steel plate (waterproof steel plate with a waterproof sheet piece fixed to the surface) is fixed with screws at a predetermined interval as described in Patent Document 2, and a cross-section L is formed on the roof periphery. By fixing the long waterproof steel plate in the shape of a screw and fixing the waterproof sheet to the waterproof steel plate by means such as welding or fusing, the expansion and contraction of the waterproof sheet due to temperature change is allowed, This is a method to maintain the performance of the waterproof sheet.
発泡性合成樹脂板にはビスが効かないので、防水鋼板の固定に使用するビスはスラブに到達させる必要がある。しかし、その際にビスがスラブを貫通、あるいはスラブ裏面が近傍まで到達してしまうと、ＡＬＣは比較的脆弱な素材であるので、スラブ裏面がビスを頂点としたすり鉢状に欠落してしまう虞がある。また、ＡＬＣパネルからなるスラブに限らず、ビスがスラブを貫通してしまうと、スラブ下の配線、配管等を傷つけてしまう虞もある。従って、ビス先端を適度な位置に留めておく必要がある。 Since the screw does not work on the foamable synthetic resin plate, the screw used for fixing the waterproof steel plate needs to reach the slab. However, if the screw penetrates the slab at that time or the back surface of the slab reaches the vicinity, ALC is a relatively fragile material, so the back surface of the slab may be lost in a mortar shape with the screw at the top. There is. Further, not only the slab made of the ALC panel, but if the screw penetrates the slab, there is a risk of damaging the wiring, piping, etc. under the slab. Therefore, it is necessary to keep the screw tip in an appropriate position.
上記構成の屋根の防水シートを改修する際には、既存の防水鋼板は防水シートもろとも撤去し、改めて防水鋼板を固定することになるが、この際、発泡性合成樹脂板の厚さが新築時の施工図に記載がない、あるいは施工図とは異なる厚さで施工がなされていることがあり、発泡性合成樹脂板の厚さの確認作業に手間取るという問題があった。 When refurbishing the roof waterproof sheet with the above configuration, the existing waterproof steel sheet will be removed together with the waterproof sheet, and the waterproof steel sheet will be fixed again. There is a problem that there is no description in the construction drawing at the time, or the construction is performed with a thickness different from the construction drawing, and it takes time to confirm the thickness of the foamable synthetic resin plate.
なお、特許文献３には防水シートの改修に関する記載があるが、上記課題の解決につながるものではない。 In addition, although patent document 3 has the description regarding repair of a waterproof sheet, it does not lead to the solution of the said subject.
本発明は、このような従来技術における課題を解決するものであり、発泡性合成樹脂板からなり部位によって厚さが異なる水勾配層の厚さを容易に測定することができる厚さ測定方法、及び該厚さ測定方法を利用した防水シートの施工方法を提供せんとするものである。 The present invention solves such a problem in the prior art, and is a thickness measuring method that can easily measure the thickness of a water gradient layer that is made of a foamable synthetic resin plate and has a different thickness depending on the site, And the construction method of the waterproof sheet using this thickness measuring method shall be provided.
上記従来技術の有する課題を解決するための、本発明に係る水勾配層の厚さ測定方法は、平坦なスラブに発泡性合成樹脂板が敷設され水勾配層が形成された陸屋根において、柄部と軸部とを有し該軸部に目盛が記された棒状の測定具を手で把持して水勾配層に貫入し、測定具の先端がスラブに接触した時点で測定具の目盛を読み取って厚さを測定することを特徴としている。
また、スラブは、ＡＬＣパネルによって形成されていることを特徴としている。
The method for measuring the thickness of the water gradient layer according to the present invention for solving the above-described problems of the prior art is that the handle portion is formed on a flat roof where a foamable synthetic resin plate is laid and a water gradient layer is formed. A bar-shaped measuring instrument having a shaft and a scale on the shaft is manually grasped and penetrated into the water gradient layer, and the scale of the measuring instrument is read when the tip of the measuring instrument contacts the slab. It is characterized by measuring the thickness.
Further, the slab is formed by an ALC panel.
また、本発明に係る防水シートの施工方法は、発泡性合成樹脂板が平坦なスラブに敷設されて片流れ屋根状あるいは両流れ屋根状の水勾配層が形成された陸屋根における絶縁工法による防水シートの施工方法であって、水勾配層の外周部に沿って所定の間隔で複数のビス孔が穿たれた長尺防水鋼板を配置する工程と、長尺防水鋼板のビス孔に軸方向に目盛が記された棒状の測定具を挿通するとともに水勾配層に貫入し、測定具の先端がスラブに接触した時点で測定具の目盛を読み取って水勾配層の厚さを測定する工程と、測定された厚さに対応したビスを選択し、測定具を貫入した長尺防水鋼板のビス孔に該ビスを貫入して長尺防水鋼板を水勾配層に固定するとともに、該ビスと同じ長さのビスを用い、長尺防水鋼板のビス孔位置の高さに等しい等高線に沿って、円形防水鋼板を所定の間隔で水勾配層に固定する工程と、を有することを特徴としている。 In addition, the waterproof sheet construction method according to the present invention is a waterproof sheet by an insulating method on a flat roof in which a foamable synthetic resin plate is laid on a flat slab to form a single-flow roof-like or double-flow roof-like water gradient layer. A method of placing a long waterproof steel plate with a plurality of screw holes perforated at predetermined intervals along the outer periphery of the water gradient layer, and a scale in the axial direction in the screw holes of the long waterproof steel plate The process of measuring the thickness of the water gradient layer by inserting the rod-shaped measuring tool and penetrating into the water gradient layer and reading the scale of the measuring tool when the tip of the measuring tool contacts the slab The screw corresponding to the thickness is selected, the screw is inserted into the screw hole of the long waterproof steel plate through which the measuring tool is inserted, and the long waterproof steel plate is fixed to the water gradient layer. Using screws, the height of the screw hole position of the long waterproof steel sheet etc. There along the contour line, is characterized by having the steps of fixing the water gradient layer at predetermined intervals round waterproof steel.
本発明に係る水勾配層の厚さ測定方法によれば、場所によって厚さが異なる発泡性合成樹脂板からなる水勾配層の厚さを容易に測定し、防水鋼板の固定に必要なビスの長さを求めることができ、更に本発明に係る防水シートの施工方法によれば、水勾配層の厚さに適したビスを選択して屋根スラブ等に悪影響を与えることなく防水シートを施工することができる。 According to the method for measuring the thickness of the water gradient layer according to the present invention, the thickness of the water gradient layer made of a foamable synthetic resin plate having a different thickness depending on the location is easily measured, and the screw necessary for fixing the waterproof steel plate is measured. According to the waterproof sheet construction method according to the present invention, the length can be obtained, and the waterproof sheet is constructed without adversely affecting the roof slab by selecting a screw suitable for the thickness of the water gradient layer. be able to.
以下に本発明の一実施形態を、図を参照しながら具体的に説明する。図１に示す建物の屋根Ａは、３０５ｍｍの平面モジュールを有する鉄骨造の工業化住宅の陸屋根である。Ｈ形鋼からなる鉄骨梁１の上にＡＬＣ（軽量気泡コンクリート）からなる床パネル２が載置されて屋根のスラブＡ１が形成されており、スラブＡ１の上面には、フラットな発泡性合成樹脂板（長さ１８２０ｍｍ×幅９１０ｍｍ×厚さ２０ｍｍ）４ａと、上面に所定の角度の傾斜面が形成された２種類の発泡性合成樹脂板（長さ９１０ｍｍ×幅９１０ｍｍ×厚さ２７−３７ｍｍのタイプ、及び、長さ９１０ｍｍ×幅９１０ｍｍ×厚さ３７−４７ｍｍのタイプ）４ｂ、４ｃが組み合わされて配置され、両流れ屋根状の１００分の１強の水勾配層Ａ３が形成されている。屋根Ａの外周部からはＡＬＣからなる最上階の外壁パネル３が突出されてパラペットＡ２が形成されており、スラブＡ１の目地部分及び発泡性合成樹脂板４ａ〜ｃと外壁パネル３との間の部分にはモルタル５が充填されている。 An embodiment of the present invention will be specifically described below with reference to the drawings. A roof A of the building shown in FIG. 1 is a flat roof of a steel-framed industrial house having a 305 mm flat module. A floor panel 2 made of ALC (lightweight cellular concrete) is placed on a steel beam 1 made of H-shaped steel to form a roof slab A1, and a flat foaming synthetic resin is formed on the upper surface of the slab A1. Two types of foamable synthetic resin plates (length 910 mm × width 910 mm × thickness 27-37 mm) having a plate (length 1820 mm × width 910 mm × thickness 20 mm) 4 a and an inclined surface with a predetermined angle formed on the upper surface 4b and 4c are combined and arranged to form a water flow gradient layer A3 of slightly more than 1/100 in the shape of a double-flow roof. An outer wall panel 3 on the uppermost floor made of ALC is projected from the outer periphery of the roof A to form a parapet A2, and the joint between the slab A1 and the foamed synthetic resin plates 4a to 4c and the outer wall panel 3 are formed. The part is filled with mortar 5.
上記構成の屋根Ａにおける防水工事の手順は以下の通りである（図２乃至４を参照のこと）。
（１）外周部のパラペットＡ２に沿って、断面Ｌ字状の長尺防水鋼板２１を配置する。防水鋼板とは、表面に防水シート片が固着された鋼板であり、防水シート片と防水シートとを溶着あるいは融着することによって防水シートを屋根面に貼設するものである。長尺防水鋼板２１の水平片には予め皿状のビス孔２１ａが所定の間隔で穿たれている。
The procedure of waterproofing work on the roof A having the above-described configuration is as follows (see FIGS. 2 to 4).
(1) A long waterproof steel sheet 21 having an L-shaped cross section is disposed along the outer peripheral parapet A2. The waterproof steel sheet is a steel sheet having a waterproof sheet piece fixed on the surface, and the waterproof sheet is attached to the roof surface by welding or fusing the waterproof sheet piece and the waterproof sheet. In the horizontal piece of the long waterproof steel plate 21, dish-shaped screw holes 21a are formed in advance at predetermined intervals.
（２）測定具Ｂを用いて長尺防水鋼板２１のビス孔２１ａ位置での水勾配層Ａ３の厚さを測定する。厚さ測定治具は、ドライバー（ねじ回し）状であり、軸部１１と柄部１２とからなる。軸部１１の最大外寸は、後述する長尺防水鋼板２１のビス孔２１ａの径よりも小さなものである。軸部１１には、先端部からの距離（＝水勾配層Ａ３の厚さ）を示す目盛１３が刻まれている。具体的な測定は、長尺防水鋼板２１のビス孔２１ａに測定具Ｂの軸部１１を挿し込んで水勾配層Ａ３に貫入し、軸部１１の先端がスラブＡ１に到達した時点で水勾配層Ａ３の表面位置が示す測定具Ｂの目盛１３を読みとることで行なう。スラブＡ１を構成する床パネル２は水勾配層Ａ３を形成する発泡性合成樹脂板４ａ〜ｃよりも硬い材質であるので、軸部１１の先端がスラブＡ１に到達したか否かは測定具Ｂを把持する手に伝わる感触で判断することができる。なお、水下側または水上側の長尺防水鋼板２１については、水勾配層Ａ３の厚さは一律なので１箇所のみを測定すればよい。 (2) The thickness of the water gradient layer A3 at the position of the screw hole 21a of the long waterproof steel plate 21 is measured using the measuring tool B. The thickness measuring jig has a driver (screwdriver) shape and includes a shaft portion 11 and a handle portion 12. The maximum outer dimension of the shaft portion 11 is smaller than the diameter of the screw hole 21a of the long waterproof steel plate 21 described later. The shaft part 11 is engraved with a scale 13 indicating the distance from the tip part (= thickness of the water gradient layer A3). Specifically, the shaft 11 of the measuring tool B is inserted into the screw hole 21a of the long waterproof steel plate 21 and penetrates into the water gradient layer A3, and the water gradient is reached when the tip of the shaft 11 reaches the slab A1. This is done by reading the scale 13 of the measuring tool B indicated by the surface position of the layer A3. Since the floor panel 2 constituting the slab A1 is made of a material harder than the foamable synthetic resin plates 4a to 4c forming the water gradient layer A3, whether or not the tip of the shaft portion 11 has reached the slab A1 is determined by the measuring tool B. It is possible to make a judgment based on the feeling transmitted to the hand holding the. In addition, about the water-proof side or water-side long waterproof steel plate 21, since the thickness of the water gradient layer A3 is uniform, only one place should be measured.
（３）測定具Ｂから読み取った数値に対応する長さ（水勾配層Ａ３の厚さに５０ｍｍ程度加算した長さ）のビス２３を選択し、長尺防水鋼板２１のビス孔２１ａにビス２３を挿し込み、ビス２３の先端をスラブＡ１にねじ入れることによって長尺防水鋼板２１を水勾配層Ａ３の上面に固定する。 (3) A screw 23 having a length corresponding to the numerical value read from the measuring tool B (a length obtained by adding about 50 mm to the thickness of the water gradient layer A3) is selected, and the screw 23 is inserted into the screw hole 21a of the long waterproof steel plate 21. And the long waterproof steel plate 21 is fixed to the upper surface of the water gradient layer A3 by screwing the tip of the screw 23 into the slab A1.
（４）水勾配方向に配置され、位置によって水勾配層Ａ３の厚さが変化するビス孔２１ａと、対向する側の長尺防水鋼板２１の同じ高さのビス孔２１ａとを結ぶ墨Ｃを打つ。この墨Ｃは同一の高さを示す等高線となる。 (4) Black ink C that is arranged in the water gradient direction and connects the screw hole 21a in which the thickness of the water gradient layer A3 changes depending on the position and the screw hole 21a of the same length of the long waterproof steel plate 21 on the opposite side. strike. This black C is a contour line indicating the same height.
（５）中心部にビス孔２２ａが穿たれた円形防水鋼板２２を、墨Ｃに沿って、同一高さの長尺防水鋼板２１のビス孔２１ａに用いたビス２３と同一長さのビス２４を用いて、所定の間隔をあけて、長尺防水鋼板２１と同様の方法で水勾配層Ａ３の上面に固定する。 (5) A round waterproof steel plate 22 having a screw hole 22a formed in the center thereof, along the black C, a screw 24 having the same length as the screw 23 used in the screw hole 21a of the long waterproof steel plate 21 having the same height. Is fixed to the upper surface of the water gradient layer A3 in the same manner as the long waterproof steel plate 21 with a predetermined interval.
（６）防水シート２５を長尺防水鋼板２１及び円形防水鋼板２２に溶着あるいは融着して防水層Ａ４を形成する。 (6) The waterproof sheet 25 is welded or fused to the long waterproof steel plate 21 and the circular waterproof steel plate 22 to form the waterproof layer A4.
以上、一連の手順を説明したが、水勾配層Ａ３の厚さの測定作業、長尺防水鋼板２１のビス２３での固定作業、墨Ｃを打つ作業は、水勾配方向に配置された長尺防水鋼板２１の全てのビス孔２１ａについて行う必要はなく、長尺防水鋼板２１や円形防水鋼板２２の固定間隔が、吹き上げ強度の検討等から算出された所定の値（以下）となるように行なえばよい。 Although a series of procedures has been described above, the work of measuring the thickness of the water gradient layer A3, the work of fixing the long waterproof steel plate 21 with the screw 23, and the work of hitting the black ink C are performed in the long direction arranged in the direction of the water gradient. It is not necessary to carry out all the screw holes 21a of the waterproof steel plate 21, and the fixing interval between the long waterproof steel plate 21 and the circular waterproof steel plate 22 can be set to a predetermined value (below) calculated from the study of blowing strength and the like. That's fine.
また、測定具Ｂの軸部１１の目盛１３は、水勾配層Ａ３の厚さを示すものにかえて、水勾配層Ａ３の厚さに対応するビスの長さを示すものであってもよい。このようにすることで、所定の位置におけるビスの必要長さを直接的に求めることができる。 Further, the scale 13 of the shaft portion 11 of the measuring tool B may indicate the length of a screw corresponding to the thickness of the water gradient layer A3 instead of indicating the thickness of the water gradient layer A3. . By doing in this way, the required length of the screw | thread in a predetermined position can be calculated | required directly.
上記方法によれば、場所によって厚さが異なる水勾配層Ａ３の厚さを容易に測定し、水勾配層Ａ３の厚さに適したビス２３、２４を選択して、スラブＡ１等に悪影響を与えることなく防水シートを施工することができる。また、測定具Ｂの貫入によって形成された孔は長尺防水鋼板２１固定用のビス２３の挿入路として使用されるので、厚さを測定した後補修する必要がなく、手間を省くことができる。 According to the above method, the thickness of the water gradient layer A3 having a different thickness depending on the location is easily measured, and the screws 23 and 24 suitable for the thickness of the water gradient layer A3 are selected to adversely affect the slab A1 and the like. A waterproof sheet can be constructed without giving. In addition, since the hole formed by the penetration of the measuring tool B is used as an insertion path for the screw 23 for fixing the long waterproof steel plate 21, it is not necessary to repair after measuring the thickness, and labor can be saved. .
本発明は屋根以外に、発泡性合成樹脂からなる断熱層を有する壁面等にも適用することができる。 In addition to the roof, the present invention can be applied to a wall surface having a heat insulating layer made of a foamable synthetic resin.
Ａ 屋根
Ａ１ スラブ
Ａ２ パラペット
Ａ３ 水勾配層
Ａ４ 防水層
Ｂ 測定具
Ｃ 墨
１ 鉄骨梁
２ 床パネル
３ 外壁パネル
４ａ、４ｂ、４ｃ 発泡性合成樹脂板
５ モルタル
１１ 軸部
１２ 柄部
１３ 目盛
２１ 長尺防水鋼板
２１ａ ビス孔
２２ 円形防水鋼板
２２ａ ビス孔
２３、２４ ビス
２５ 防水シート
A Roof A1 Slab A2 Parapet A3 Water gradient layer A4 Waterproof layer B Measuring tool C Black 1 Steel beam 2 Floor panel 3 Outer wall panel 4a, 4b, 4c Expandable synthetic resin plate 5 Mortar 11 Shaft part 12 Pattern part 13 Scale 21 Long Waterproof steel plate 21a Screw hole 22 Round waterproof steel plate 22a Screw hole 23, 24 Screw 25 Waterproof sheet
Claims (3)
水勾配層の外周部に沿って所定の間隔で複数のビス孔が穿たれた長尺防水鋼板を配置する工程と、
長尺防水鋼板のビス孔に軸方向に目盛が記された棒状の測定具を挿通するとともに水勾配層に貫入し、測定具の先端がスラブに接触した時点で測定具の目盛を読み取って水勾配層の厚さを測定する工程と、
測定された厚さに対応したビスを選択し、測定具を貫入した長尺防水鋼板のビス孔に該ビスを貫入して長尺防水鋼板を水勾配層に固定するとともに、該ビスと同じ長さのビスを用い、長尺防水鋼板のビス孔位置の高さに等しい等高線に沿って、円形防水鋼板を所定の間隔で水勾配層に固定する工程と、を有することを特徴とする防水シートの施工方法。 A method of constructing a waterproof sheet according to insulating method in flat roof of foamable synthetic resin plate is laid set to a flat slab shed roof shape or both flow roof-like water gradient layer is formed,
Arranging a long waterproof steel plate having a plurality of screw holes perforated at predetermined intervals along the outer periphery of the water gradient layer;
Insert a rod-shaped measuring tool with a scale in the axial direction into the screw hole of the long waterproof steel sheet and penetrate the water gradient layer. When the tip of the measuring tool comes into contact with the slab, the scale of the measuring tool is read to Measuring the thickness of the gradient layer;
The screw corresponding to the measured thickness is selected, and the screw is inserted into the screw hole of the long waterproof steel plate penetrating the measuring tool to fix the long waterproof steel plate to the water gradient layer. And a step of fixing the circular waterproof steel sheet to the water gradient layer at predetermined intervals along a contour line equal to the height of the screw hole position of the long waterproof steel sheet. Construction method.
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