JP3023895U - Variable bottom drain drain - Google Patents

Variable bottom drain drain

Info

Publication number
JP3023895U
JP3023895U JP1995011078U JP1107895U JP3023895U JP 3023895 U JP3023895 U JP 3023895U JP 1995011078 U JP1995011078 U JP 1995011078U JP 1107895 U JP1107895 U JP 1107895U JP 3023895 U JP3023895 U JP 3023895U
Authority
JP
Japan
Prior art keywords
product
drain
drainage
concrete
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1995011078U
Other languages
Japanese (ja)
Inventor
功 尾形
Original Assignee
東北石材ブロック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東北石材ブロック株式会社 filed Critical 東北石材ブロック株式会社
Priority to JP1995011078U priority Critical patent/JP3023895U/en
Application granted granted Critical
Publication of JP3023895U publication Critical patent/JP3023895U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Road Paving Structures (AREA)

Abstract

(57)【要約】 【目的】 本考案は、水路縦断勾配の取れない歩車道境
界と横断部に使用するコンクリート排水ドレンでインバ
ートコンクリートを打設する事無く水路勾配が構築出
来、施工が容易でコンクリート蓋を無くすると同時に車
運転者に違和感を与えない製品の提供を目的としてい
る。 【構成】 底版を介して、両側壁天端を片持羽出し梁と
し、この先端に排水グレーチングを嵌設し、内空断面に
ストレートガイド部を設け、このガイド部をガイドさせ
た段々深型製品を使用しその落差部に上流内空断面と下
流内空断面の傾斜製品を使用して可変状に排水効果を得
ると共に、内空低部を円底とし沈殿土砂の流送効果も得
られる様にした排水ドレン製品の構成。
(57) [Abstract] [Purpose] The present invention is capable of constructing a waterway slope without placing invert concrete with a concrete drainage drain used at a pedestrian road boundary and a crossing where the vertical slope of the waterway cannot be taken, and construction is easy. The aim is to eliminate the concrete lid and at the same time provide a product that does not give the driver a feeling of strangeness. [Structure] Through the bottom slab, the top ends of both side walls are cantilevered beams, drainage gratings are fitted on the tips, and straight guides are provided on the inner cross section. A product is used and sloped products of the upstream and downstream inner air sections are used for the drop portion to obtain a variable drainage effect, and the lower inner air section is used as a circular bottom to deliver sedimentation sediment. The structure of the drainage drain product.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、道路に於いての水路縦断勾配の取れ無い歩車道境界と横断部に使用す るコンクリート排水ドレンで道路輪荷重、T=25トンをも考えた製品に関する ものである。 The present invention relates to a concrete drainage drain used at a pedestrian road boundary and a crossing where a vertical gradient of a waterway is not taken on a road, and a road wheel load of T = 25 tons is considered.

【0002】[0002]

【従来の技術】[Prior art]

従来の道路境界に使用するコンクリート排水製品には、次の様な製品がある。 Conventional concrete drainage products used for road boundaries include the following products.

【0003】 日本工業規格(JIS−A−5345)の道路用鉄筋コンクリート側溝。 現地でインバートコンクリートを打設する可変側溝。 流量断面を円形とした製品(ヒューム管を矩形に巻付た製品)。 BOXカルバートの天端に排水孔を設けた製品等が有った。Japanese Industrial Standard (JIS-A-5345) reinforced concrete gutters for roads. A variable gutter for placing invert concrete locally. A product with a circular flow cross section (a product in which a fume tube is wrapped around a rectangle). There was a product that had a drain hole at the top of the BOX culvert.

【0004】 しかし、これらの製品には次の様な欠点と解決すべく課題が有った。However, these products have the following drawbacks and problems to be solved.

【0005】 道路用鉄筋コンクリート側溝に於いては、天端に比較的巾を有するコンクリ ート蓋を嵌設するので、車道を通る運転ドライバーに違和感を与えたり、積雪寒 冷地では蓋と本体の隙間の泥土や砂が凍上を起し、これを除雪グレーダー機械で 巻き込み事故を起こす事も有った。In the reinforced concrete gutters for roads, a concrete lid having a relatively wide width is fitted at the top end, which may give a feeling of discomfort to a driver passing through a roadway, or may cause the lid and the main body of the body to be covered in snowy cold regions. Mud and sand in the gap caused freezing, which could be caught by a snow removal grader machine and cause an accident.

【0006】 現地でインバートコンクリートを打設する可変側溝に於いても、コンクリー ト蓋を使用するので、 同様の運転ドライバーに違和感を与えたり、冬期の凍 上圧による事故が有るばかりか施工にも時間がかかっていた。[0006] The concrete lid is used even in the variable gutter where the invert concrete is placed on site, so that the same driving driver may feel uncomfortable, and there is an accident due to frost pressure in the winter, and it is also used for construction. It took time.

【0007】 流量断面を円形とした製品では、道路縦断勾配が一定の場合は円形製品の為 に水路縦断勾配の構築が困難で有った。In the case of a product having a circular flow rate cross section, when the road longitudinal gradient is constant, it is difficult to construct a waterway longitudinal gradient because it is a circular product.

【0008】 BOXカルバートの天端に排水孔を設けた製品でも の製品同様の欠点 が有ると同時に天端も底版も水平施工が要求されるので道路縦断勾配が有る場合 はその天端面を合わす事で施工に苦労していた。また天端巾が道路中央に広く飛 び出して構成されるばかりか路面アスファルト舗装道路ではコンクリート面と調 和せず違和感を生ずる等の解決すべき課題が有った。[0008] BOX culverts have the same drawbacks as products with drain holes provided at the top of the BOX culvert, and at the same time horizontal installation is required for the top and bottom slabs. I had a hard time constructing. In addition, there was a problem to be solved, such as not only that the crown width was wide in the center of the road, but also that the asphalt paved road surface did not mix with the concrete surface and caused a feeling of strangeness.

【0009】 そこで、本考案製品の考案者は、これらの製品の設計、製造、施工に従事しな がら本考案製品の解決課題を次の様にしたものである。Therefore, the inventor of the product of the present invention has solved the problems to be solved by the product of the present invention as follows while engaging in the design, manufacturing, and construction of these products.

【0010】[0010]

【考案の解決しょうとする課題】 コンクリート蓋を無くし、車道を通る運転ドライバーに違和感を与えたり、 積雪寒冷地での凍上圧の事故を防ぐ製品とする、さらに製品高さのサイズ変更が 有る場合も型枠の兼務が可能で製造、施工が容易な製品とする。[Problems to be solved by the invention] If the concrete lid is removed and the driver who passes the roadway feels uncomfortable, or the product is designed to prevent accidents of frost heaving pressure in snowy regions, and there is a change in product height size Also, the product can be used as a formwork and is easy to manufacture and construct.

【0011】 水路縦断勾配の取れない現場に於いて、内空断面巾を同じくしガイドさせ深 型製品と傾斜製品との組合せで水路縦断勾配を容易に構築出来る様にすると同時 に低部を円底として沈殿土砂が流れ易い製品とする。[0011] In the field where the vertical cross section of the waterway cannot be obtained, it is possible to guide the same inner cross-sectional width to make it possible to easily construct the vertical cross section of the waterway by combining the deep type product and the inclined product. Use a product that allows sediment to flow easily as the bottom.

【0012】 農免道路の様に比較的軟弱地盤に構築使用される製品に於いては、側壁を内 面に貫通させた排水孔を複数個設け土砂流失防止マットを装着した製品も考慮す る。For products used on relatively soft ground such as agricultural roads, consider products that have multiple drainage holes with sidewalls penetrating the inner surface and are equipped with a sediment loss prevention mat. .

【0013】 加えて、歩車道境界ブロックを使用する時、このブロックを変化させ、羽出 し部中央に設けて、多目的な作用、効果の得られる製品も考慮する。In addition, when a pedestrian road boundary block is used, this block is changed to be provided at the center of the feathering part, and a product having a multipurpose action and effect can be considered.

【0014】 以上を本考案の解決課題として、その解決手段を次の様にしたものである。The above is the solution problem of the present invention, and the solution means is as follows.

【0015】[0015]

【考案が解決しょうとする手段】[Means to be solved by the device]

製品製造の外型枠を最も高い製品の出来る型枠とし、サイズ変更製品(高さの違 う製品)が内部型枠のアタッチメント交換で容易に製造出来る様にするとともに 、外輪郭型状を矩形として製造、施工を容易とする。 また、内空断面型状は天 端を半円ハンチとし、内空断面巾はガイド部を設け一定とし、低部は沈殿土砂の 流送を良くする為に円底とし、製品天端には狭いグレーチング嵌設構造とする。 The outer mold for product manufacturing is the mold that allows the highest product, and size-changed products (products with different heights) can be easily manufactured by exchanging the attachments of the inner mold, and the outer contour shape is rectangular. As a result, manufacturing and construction are easy. In addition, the inner-air cross-section type has a semicircle haunch at the top, the inner-air cross-section width is fixed with a guide part, and the lower part has a round bottom to improve the transport of sediment, and the product top end Narrow grating fitting structure.

【0016】 これを実施例の図面で説明すると、This will be described with reference to the drawings of the embodiments.

【考案の実施例】[Example of device]

【0017】 基礎に設置する部分を水平とし、底版1.を介して、両立上側壁2.2.と狭巾 の排水溝グレーチング4.の支台を有する天端片持羽出し梁3.3.と一体とし て、その内空断面巾W.を一定とし、且つ全体の上部E.と下部F.(ストレー トガイド部を除いた)をも同一型状、輪郭とし、高さストレートガイド部h.を 変化(普通5〜10cm違い)させて、上流内空断面の製品A.と下流内空断面の 製品B.との間に製品B.と高さ巾の外輪郭部を同じくした製品の一方を製品A .の上流内空断面型状とし、一方を製品B.の下流内空断面型状としてドレン底 部を傾斜構成した製品N.(B〜C、C〜Dに使用する場合も同様とする)とを U時状失水防止材7.の効果が得られる様なジョイント手段8.で組合せ合着し て、必要水路縦断勾配に合わした製品を段々下流に深い製品として水路全体を構 築する。The part to be installed on the foundation is horizontal and the bottom plate 1. Through the upper side wall 2.2. And narrow drainage grating 4. Cantilevered beam with abutment of 3.3. And the inner cross-section width W. Constant, and the overall upper E. And lower F. The same shape and contour (except for the straight guide part) are used, and the height straight guide part h. By changing (usually 5-10 cm difference), the product A. And products with a downstream inner cross section B. Between the product B. One of the products with the same outer contour of height and width is product A. Of the product B. The product of which the drain bottom is slanted as a downstream inner air cross section type (The same shall apply when used for B to C and C to D) and U hour water loss prevention material 7. Joint means for obtaining the effect of 8. In order to construct the entire canal, the products that meet the required longitudinal gradient of the canal will be combined and coalesced with each other to make deeper products downstream.

【0018】 低部を傾斜構成した製品N.の傾斜段差は、上流内空断面の製品A.と下流内 空断面製品B.のガイド部h.の違いだけ傾斜(製品長さ1000mmで50mm、 2000mmで100mmを標準)した製品とする。[0018] A product N. The inclined step of the product A. And downstream in-air products B. Guide part h. The difference is that the product is slanted (50 mm for product length 1000 mm, 100 mm for 2000 mm is standard).

【0019】 この時、製品N.製品のU時状失水防止材7.の溝は、上流は製品A.と下流 は製品B.の端部溝と同じものとし、ジョイント手段8.も上流は製品A.の位 置で下流は製品B.の位置ととする。At this time, the product N. U water loss prevention material for products 7. The groove of the product A. And downstream is product B. And the joint means 8. Also upstream is product A. In the position of the product B. Position.

【0020】 次に、請求項2の製品を実施例図3.で説明すると、比較的大型製品(巾W. 600mm以上で内空高さ600mm以上)で基礎に設置する部分を水平とし、底版 1.を介して 、両立上側壁2.2.と狭巾の排水溝グレーチング4.の支台を 有する天端片持羽出し梁3.3.と一体として、その内空断面巾W.を一定とし 、且つ全体の上部E.を同一型状、輪郭とし、内空断面低部は円底の下に、さら なる段状複小円底を構築し、両立上側壁2.2.あるいは、片側壁2.の1/2 以上の位置にこの側壁を内面に貫通させた排水孔5.を複数個設け、更に土砂流 入防止マット6.を装着してなる製品とするものである。Next, the product of claim 2 will be described with reference to FIG. Explaining in Section 1, a relatively large product (width W. 600 mm or more and inner air height 600 mm or more) is installed on the foundation horizontally, and the bottom plate 1. Through the upper side wall 2.2. And narrow drainage grating 4. Top cantilevered beam with abutment of 3.3. And the inner cross-section width W. Constant, and the overall upper E. With the same shape and contour, and the lower part of the inner air section has a further stepped small round bottom under the bottom of the round bottom. Alternatively, one side wall 2. 4. A drainage hole formed by penetrating this side wall to the inner surface at a position of ½ or more of 5. Multiple mats are provided, and a mat for preventing the inflow of sediment 6. Is a product that is equipped with.

【0021】 天端構造については、目的に応じて、天端を排水グレーチング4.の方向に傾 斜(普通3〜5%の傾斜)させた乗入製品(実施例図1)。Regarding the top end structure, the top end is drained according to the purpose. A product that is tilted in the direction (normally 3 to 5%) (Fig. 1 in Example).

【0022】 歩車道境界ブロックを合着して使用する境界排水ドレン製品(実施例図2)。A boundary drainage product that is used by attaching pedestrian road boundary blocks together (Example FIG. 2).

【0023】 歩車道境界ブロックを斜めに切り下げして合着して使用する境界排水ドレン切下 製品(図示して無いが歩車道境界ブロックを斜めに切り下げた製品)。A boundary drainage drain cut-down product that is used by obliquely cutting down the pedestrian road boundary block and adhering it (a product in which the pedestrian road boundary block is cut down diagonally although not shown).

【0024】 図示していないが、天端巾1000mm以上(内空断面巾W.600mm以上)製品 では、その巾を利用しい歩車道境界ブロックの両低部に排水グレーチング4.を 設けた製品や、より広い製品ではこの歩車道境界ブロック部を立ち上がり壁を自 然石や煉瓦、擬木、擬石等の製品とした環境花壇BOXとして構築した製品とし て使用する事で、この考案製品のより時代のニーズに合った効果が得られる。Although not shown, for products with a top width of 1000 mm or more (inner cross-section width W.600 mm or more), drainage gratings are used at both lower portions of the pedestrian road boundary block where the width can be used. With this product, and for wider products, this pedestrian road boundary block is used as a product that is constructed as an environmental flowerbed BOX, where the rising wall is made up of natural stone, brick, artificial wood, artificial stone, etc. You can obtain the effects that are more suited to the needs of the times of the product.

【0025】 以上の様にして成る本考案製品には次の様な作用、効果が有る。The product of the present invention constructed as described above has the following actions and effects.

【0026】[0026]

【考案の作用、効果】 コンクリート蓋を無くし、狭い排水グレーチング(普通巾50〜80mm)と しているため、車のタイヤが直接蓋の役目をするグレーチングに接触しないので 車道を通る運転ドライバーに違和感を与える事も無く、グレーチング鋼制の板厚 のみのため支台との接地面が少ないので積雪寒冷地での凍上圧の事故も無い。[Operation and effect of the device] Since the concrete lid is removed and the drainage grating is narrow (normal width is 50-80mm), the tires of the car do not directly contact the grating that acts as the lid, which makes the driver feel uncomfortable. Since there is little contact with the abutment due to only the thickness of the grating steel plate, there is no accident of frost heaving pressure in snowy cold regions.

【0027】 製品の外輪郭部が矩形のため製造も施工も容易であると同時に深型の製品で 内型アタッチメントの交換で他の製品も製造可能で型枠コストが大幅に軽減出来 、又、内空断面巾を同じくしガイドさせ深場製品と底部を傾斜構成した製品を使 用する事により、水路縦断勾配の取れない現場に於いても、水路縦断勾配を容易 に構築出来、加えて、低部が円底としているので、その排水効果ばかりで無く、 沈殿土砂の流送効果も大きい。Since the outer contour portion of the product is rectangular, it is easy to manufacture and construct, and at the same time, it is a deep product and other products can be manufactured by exchanging the inner mold attachment, and the form cost can be greatly reduced. By using a deep field product and a product with a slanted bottom part that guides with the same internal cross-section width, it is possible to easily construct a vertical canal even in a site where the vertical canal cannot be taken. Since the lower part has a round bottom, not only the drainage effect but also the sediment transport effect is large.

【0028】 又、大型の製品は、複円底とする事によって、渇水時その効果はより大きい。In addition, a large product has a double circular bottom, so that the effect is greater when the water is drought.

【0029】 比較的軟弱地盤に構築使用される製品に於いては、側壁を内面に貫通させた 排水孔を複数個設け土砂流失防止マットを装着する事により道路路盤中に含まれ る雨水等の排水は除去される。For products used on relatively soft ground, by installing a plurality of drain holes with sidewalls penetrating the inner surface and installing a sediment loss prevention mat, rainwater, etc. contained in the roadbed may be removed. Wastewater is removed.

【0030】 加えて、歩車道境界ブロックを使用する時、境界ブロックを中央に嵌設し、 両低部にグレーチングを設ける様にする事により道路幅員、歩道敷き面積も有効 に取れると同時に、巾の広い製品では、このブロックを環境花壇BOXに置き換 える事により、その効果は大きいものであり、従来の様に水路縦断勾配を設ける 為に傾斜させたインバートコンクリートを打設する事も無いので工事期間が大幅 に短縮出来る利点も有する。In addition, when using a pedestrian road boundary block, by fitting the boundary block in the center and providing gratings on both lower parts, the road width and sidewalk laying area can be effectively taken, and at the same time, the width can be increased. In the case of a wide product, the effect will be great by replacing this block with the environmental flower bed BOX, and there will be no need to place inverted concrete that is inclined to provide a vertical gradient for the waterway as in the past. It also has the advantage that the construction period can be greatly shortened.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案実施例の構成を示す要部概要図。FIG. 1 is a schematic diagram of a main part showing a configuration of an embodiment of the present invention.

【図2】天端片持羽出し梁の一方に歩車道境界ブロック
を合設した実施例製品の斜視図。
FIG. 2 is a perspective view of an embodiment product in which a walkway boundary block is installed on one of the cantilevered cantilever beams.

【図3】低部を複円底とし、且つ側壁に排水孔を設けた
実施例製品の斜視図。
FIG. 3 is a perspective view of an example product in which a lower portion has a double circular bottom and a side wall is provided with a drainage hole.

【図4】天端巾を同じくし、深型製品の側壁厚を段々に
変化させた実施例製品の斜視図。
FIG. 4 is a perspective view of an example product in which the top width is the same and the side wall thickness of the deep product is gradually changed.

【符号の説明】[Explanation of symbols]

A 上流内空断面製品 B 下流内空断面製品 C B製品よりも深場使用製品 D C製品よりも深場使用製品 E 上部型状(構造形態) F 下部型状(構造形態) G 歩車道境界ブロック N ドレン低部傾斜製品(一方を上流内空断面、一方を
下流内空断面とした製品) W 内空断面巾 h ストレートガイド部の高さ 1 底版 2 立上側壁 3 天端片持羽出し梁 4 グレーチング 5 排水孔 6 土砂流入防止マット 7 失水防止材 8 ジョイント手段 9 切欠部
A Upstream in-air cross-section product B Downstream in-air cross-section product C B Product in deeper field than product D C Product in deeper field than product E Upper shape (structural form) F Lower shape (structural form) G Pedestrian road boundary Block N Drain low-tilt product (Product in which one has an upstream inner sky section and one has a downstream inner sky section) W Inner air section width h Straight guide height 1 Bottom plate 2 Standing side wall 3 Cantilever wing Beam 4 Grating 5 Drainage hole 6 Sediment inflow prevention mat 7 Water loss prevention material 8 Joint means 9 Notch

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 底版1.を介して、両立上側壁2.2.
と狭巾の排水溝グレーチング4.の支台を有する天端片
持羽出し梁3.3.と一体として成る排水ドレンに於い
て、その内空断面巾W.を一定とし、且つ全体の上部
E.と下部F.をも同一型状、輪郭とし、ストレートガ
イド部の高さh.を変化させて上流内空断面の製品A.
と下流内空断面の製品B.との間に製品B.と高さ巾の
外輪郭部を同じくした製品の一方を製品A.の上流内空
断面とし、一方を製品B.の下流内空断面としてドレン
底部を傾斜構成した製品N.とを組み合わせて段々下流
に深い製品として可変状に構築してなるコンクリート可
変円底排水ドレン。
1. Bottom plate 1. Through the upper side wall 2.2.
And narrow drainage grating 4. Cantilevered beam with abutment of 3.3. In the drainage drain that is integrated with, the inner cross-sectional width W. Constant, and the overall upper E. And lower F. Has the same shape and contour, and the height of the straight guide portion h. By changing the value of A.
And the product of the downstream inner cross section B. Between the product B. And one of the products with the same outer contour part of height and width is product A. Of the product B. The product with the drain bottom inclined as a downstream inner cross section of N. A concrete variable circular bottom drainage drain that is variably constructed as a deep product downstream by combining with.
【請求項2】 比較的深型製品に於いて、低部円底を段
状複円底として構成し、両立上側壁2.2.の1/2以
上の位置にこの側壁を内面に貫通させた排水孔5.を複
数個設け、更に土砂流入防止マット6.を装着してなる
コンクリート可変円底排水ドレン。
2. In a relatively deep product, the lower circular bottom is configured as a stepped compound circular bottom, and the upper side wall 2.2. 4. A drainage hole formed by penetrating the side wall to the inner surface at a position of 1/2 or more of 5. Multiple mats are provided, and a mat for preventing inflow of sediment 6. A variable-concrete bottom-bottomed drain that is equipped with.
JP1995011078U 1995-10-19 1995-10-19 Variable bottom drain drain Expired - Lifetime JP3023895U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1995011078U JP3023895U (en) 1995-10-19 1995-10-19 Variable bottom drain drain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1995011078U JP3023895U (en) 1995-10-19 1995-10-19 Variable bottom drain drain

Publications (1)

Publication Number Publication Date
JP3023895U true JP3023895U (en) 1996-04-30

Family

ID=43159150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1995011078U Expired - Lifetime JP3023895U (en) 1995-10-19 1995-10-19 Variable bottom drain drain

Country Status (1)

Country Link
JP (1) JP3023895U (en)

Similar Documents

Publication Publication Date Title
JP2007138707A (en) Boundary block between sidewalk and roadway for water permeable pavement and drainage structure of water permeable pavement
JP7007071B1 (en) Simultaneous pedestrian road boundary for flat streets
JP6388287B2 (en) L-shaped block for precast concrete street asphalt on apron
JPH0853808A (en) Water permeable sidewalk block
JP6534145B2 (en) L-shaped walkway road boundary drainage block with slit
JP3023895U (en) Variable bottom drain drain
JP6349485B2 (en) Blocks for L-shaped streets with precast concrete secondary waterways that paved asphalt on the apron
JP2000144616A (en) Seepage water drainage facility for water-permeable asphalt paved road and its execution method
JP4000580B2 (en) Curb stone inside drainage device
JPH11286984A (en) Multipurpose street gutter structure
JP2764544B2 (en) Street lid for permeable pavement
JP2012026145A (en) Construction method for water passage-road and side block for water passage-road
JPH08109673A (en) Block for side ditch and structure of road
JP3022195U (en) Drainage tractor pedestrian border block
KR200364528Y1 (en) Monolithic block for gutler and boundary of road
JP7291450B1 (en) Semi-flat culvert by sidewalk boundary block
JP2000345508A (en) Sidewalk and roadway boundary block for water permeable paving and drainage structure of water permeable pavement
JP3000258B2 (en) Pedestrian road boundary construction method using boundary side groove blocks
JP7109625B1 (en) Semi-flat culvert with L-shaped blocks
JPH047269Y2 (en)
JP3334947B2 (en) Structure of permeable pavement culvert and culvert block
JP2011047107A (en) Sidewalk roadway boundary block, and sidewalk roadway boundary drainage structure
JP3089183U (en) Pedestrian road boundary block and pedestrian road boundary structure using it
JP2869945B2 (en) Pedestrian road boundary block
JP3060219U (en) Low step type pedestrian road boundary block