JPH07238562A - Man-hole - Google Patents
Man-holeInfo
- Publication number
- JPH07238562A JPH07238562A JP6051035A JP5103594A JPH07238562A JP H07238562 A JPH07238562 A JP H07238562A JP 6051035 A JP6051035 A JP 6051035A JP 5103594 A JP5103594 A JP 5103594A JP H07238562 A JPH07238562 A JP H07238562A
- Authority
- JP
- Japan
- Prior art keywords
- manhole
- ground opening
- man
- manhole cover
- opening
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、中小建築物の地下受水
槽や地中管等、地中の空間へ作業者が出入りするための
マンホールにおいて、マンホール蓋を開放したまま作業
を行う場合の安全性を向上させたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole for workers to enter and leave an underground space, such as an underground water tank or an underground pipe of a small or medium-sized building, when the work is performed with the manhole cover open. For those with improved safety.
【０００２】[0002]
【従来の技術】中小建築物の地下受水槽や地中管等への
出入りに使用されるマンホールは、内部で作業中は、マ
ンホール蓋が通常開放されたままとする。一般に、マン
ホールは、駐車場や歩道あるいは機械室の床面等に設け
られているため、その上を第三者あるいは車両が通行す
る場合もあり、マンホール蓋を開放したままでは、車両
の一部や歩行者が転落したり、資材等を過って落下して
しまう恐れがある。したがって、このような危険を回避
するため、開放したマンホールの地上開口部の周囲には
落下防止用の柵を仮設している。また、地上開口部から
下方へ延びるマンホール内部のコンクリート壁にはタラ
ップが打ち込んであり、作業者はこのタラップを昇降し
て地上と地下作業場との間を出入りする。2. Description of the Related Art Manholes used for entering and exiting underground water tanks, underground pipes, etc. of small and medium-sized buildings, usually have their manhole covers left open during internal work. In general, manholes are provided in parking lots, sidewalks, floors of machine rooms, etc., so that a third party or vehicle may pass over them. There is a risk that pedestrians may fall, or materials may fall over. Therefore, in order to avoid such a danger, a fall prevention fence is temporarily installed around the above-ground opening of the open manhole. Further, a trap is driven into the concrete wall inside the manhole extending downward from the opening above the ground, and a worker moves up and down the trap to move between the ground and the underground work area.
【０００３】[0003]
【発明が解決しようとする課題】しかし、開放したマン
ホールの周囲に落下防止用の柵を設置するには、そのた
めの専用の資材を準備する必要がある。また、作業者が
マンホールから地下へ下りる際には、足掛かりとなるマ
ンホール内壁のタラップへ容易に足が届かず、しかもこ
の時に体を支える手段がないので、不安定な姿勢とな
り、非常に危険を感じることが多い。However, in order to install a fall prevention fence around the open manhole, it is necessary to prepare a dedicated material for that purpose. Also, when a worker descends from the manhole to the basement, his / her feet cannot easily reach the traps on the inner wall of the manhole, and there is no means to support the body at this time, resulting in an unstable posture and very dangerous. I often feel.
【０００４】本発明は、上記のような事情のもとになさ
れたもので、その技術的課題とするところは、マンホー
ルを開放して地下作業をする際に予め柵用資材を用意し
てマンホールの周囲に柵を設置する必要がなく、かつ作
業者がマンホールを出入りする際の安全性を向上させる
ことにある。The present invention has been made under the circumstances as described above, and its technical problem is to prepare a fence material in advance when opening a manhole for underground work. There is no need to install a fence around the building and to improve the safety when workers enter and leave the manhole.
【０００５】[0005]
【課題を解決するための手段】上述した技術的課題は、
本発明によって有効に解決することができる。すなわち
本発明に係るマンホールは、地上開口部の開口形状がほ
ぼ方形を呈し、この地上開口部の上端部内壁に形成され
た蓋受け部上に互いに積層状態に嵌め込まれて前記地上
開口部を閉塞する複数のマンホール蓋と、前記地上開口
部の縁に沿って形成され前記各マンホール蓋の一端を直
立状態に差し込み支持可能な複数の嵌合溝とを有するも
のである。本発明の一層好ましい例においては、マンホ
ール蓋を二枚有すると共に、各マンホール蓋の一端と対
応する一対の嵌合溝が地上開口部の両側縁に沿って設け
られ、少なくとも一枚のマンホール蓋に、直立状態での
各マンホール蓋の両側端間に張設するシートが取り付け
られる。また、他の一層好ましい例においては、地上開
口部の閉塞時に最も下側に位置するマンホール蓋の内面
にタラップが設けられる。The above-mentioned technical problems are as follows.
The present invention can effectively solve the problem. That is, in the manhole according to the present invention, the opening shape of the ground opening has a substantially rectangular shape, and the ground receiving opening is closed by being fitted in a laminated state on the lid receiving portion formed on the inner wall of the upper end of the ground opening. A plurality of manhole covers, and a plurality of fitting grooves formed along the edge of the above-ground opening so that one end of each manhole cover can be inserted and supported in an upright state. In a more preferable example of the present invention, the two manhole covers are provided, and a pair of fitting grooves corresponding to one end of each manhole cover is provided along both side edges of the ground opening, and at least one manhole cover is provided. , A sheet that is stretched between both ends of each manhole cover in an upright state is attached. Further, in another more preferable example, a trap is provided on the inner surface of the manhole cover located at the lowermost side when the ground opening is closed.
【０００６】[0006]
【作用】上記構成のマンホールは、マンホール地上開口
部を互いに積層状態で閉塞している複数のマンホール蓋
を取り外して開放し、前記地上開口部の縁に沿って形成
された嵌合溝に差し込んで直立状態に支持することによ
って、このマンホール蓋が落下防止用の柵となるもので
ある。この場合、例えばマンホール蓋が二枚あって、各
マンホール蓋を地上開口部の両側縁に設けられた一対の
嵌合溝に支持し、マンホール蓋に取り付けられたシート
を、直立した二枚のマンホール蓋の側端間に張設するこ
とによって、マンホール地上開口部の周囲を取り囲む。
また、タラップが設けられたマンホール蓋は、このタラ
ップを、作業者がマンホール内へ下りる際の最初の足掛
かりあるいは体を支えるための手摺として利用すること
ができる。In the manhole having the above-described structure, the manhole lids that close the manhole ground openings in a stacked state are removed and opened, and the manholes are inserted into the fitting grooves formed along the edges of the ground openings. By supporting the manhole in the upright state, the manhole cover serves as a fall prevention fence. In this case, for example, there are two manhole covers, and each manhole cover is supported by a pair of fitting grooves provided on both side edges of the above-ground opening, and a sheet attached to the manhole cover is used as two upright manhole covers. The manhole ground opening is surrounded by being stretched between the side edges of the lid.
Further, the manhole cover provided with the trump can be used as the first foot of the worker when he / she descends into the manhole or as the handrail for supporting the body.
【０００７】[0007]
【実施例】図１は、本発明に係るマンホールの一実施例
を示す断面斜視図で、すなわちこのマンホールの地上開
口部１は開口形状がほぼ長方形を呈しており、その上端
部内壁には、第一の蓋受け部１１と、それよりも高位置
の第二の蓋受け部１２が形成されており、この第一及び
第二の蓋受け部１１，１２の外側には地上開口部１の両
長辺に沿って、第一及び第二の嵌合溝１３，１４が設け
られている。このうち第一の嵌合溝１３は、ほぼ長方形
をなす地上開口部１の一方の長辺となる位置で当該マン
ホールの躯体コンクリートＡの上縁に半埋め込み状態に
設けられた金属製インサート部材１５に形成されてお
り、このインサート部材１５の内側立上り部の上端面１
５ａが、第一の蓋受け部１１の一部をなしている。第二
の嵌合溝１４は、他方の長辺となる位置で躯体コンクリ
ートＡに第一の嵌合溝１３と平行に凹設されている。ま
た、地上開口部１の内壁のうち、第一の嵌合溝１３を有
するインサート部材１５が埋設された側の内壁には、コ
字形の複数のタラップ１６が上下方向適当な間隔で打ち
込まれている。1 is a cross-sectional perspective view showing an embodiment of a manhole according to the present invention, that is, a ground opening 1 of this manhole has a substantially rectangular opening shape, and an inner wall of an upper end portion thereof has A first lid receiving portion 11 and a second lid receiving portion 12 positioned higher than the first lid receiving portion 11 are formed. Outside the first and second lid receiving portions 11 and 12, the ground opening 1 is provided. First and second fitting grooves 13 and 14 are provided along both long sides. Of these, the first fitting groove 13 is a metal insert member 15 provided in a semi-embedded state at the upper edge of the skeleton concrete A of the manhole at a position that is one long side of the ground opening 1 having a substantially rectangular shape. Is formed on the upper end surface 1 of the inner rising portion of the insert member 15.
5a forms a part of the first lid receiving portion 11. The second fitting groove 14 is provided in the skeleton concrete A in parallel with the first fitting groove 13 at the position of the other long side. Further, among the inner walls of the ground opening 1, a plurality of U-shaped turrets 16 are driven at appropriate intervals in the vertical direction on the inner wall on the side where the insert member 15 having the first fitting groove 13 is embedded. There is.
【０００８】地上開口部１は、図２及び図３に示すよう
に、ほぼ長方形状の二枚の金属製マンホール蓋２，３が
互いに積層された状態で嵌め込まれるようになってい
る。このうち、第一のマンホール蓋２は、その三方の縁
部下面をインサート部材１５の内側立上り部の上端面１
５ａを含む第一の蓋受け部１１上に支持され、第二のマ
ンホール蓋３は一端が第二の蓋受け部１２上に支持され
た状態で第一のマンホール蓋２の上に重なるように地上
開口部１に嵌め込まれる。したがって第一の蓋受け部１
１とそれよりも高位置の第二の蓋受け部１２との高低差
ｈ1 は第一のマンホール蓋２の厚さｔ1 とほぼ対応して
設定され、第二の蓋受け部１２と地上開口部１の上端と
の高低差ｈ2 は第二のマンホール蓋３の厚さｔ2 とほぼ
対応して設定され、実際には、両マンホール蓋２，３の
厚さｔ1 ，ｔ2 は同一であるから、ｈ1 ＝ｈ2 に設定さ
れる。As shown in FIGS. 2 and 3, the ground opening 1 is adapted to be fitted with two substantially rectangular metal manhole covers 2 and 3 stacked on each other. Of these, the first manhole cover 2 has a lower surface on three sides thereof at the upper end surface 1 of the inner rising portion of the insert member 15.
The second manhole cover 3 is supported on the first lid receiving part 11 including 5a, and the second manhole cover 3 overlaps the first manhole cover 2 with one end supported on the second lid receiving part 12. It is fitted into the opening 1 on the ground. Therefore, the first lid receiving portion 1
The height difference h 1 between the first lid 1 and the second lid receiving portion 12 located at a higher position than that is set substantially corresponding to the thickness t 1 of the first manhole lid 2, and height difference h 2 between the upper end of the opening portion 1 is set to correspond substantially to the thickness t 2 of the second manhole lid 3, in practice, the thickness t 1, t 2 of the two manhole cover 2, 3 Since they are the same, h 1 = h 2 is set.
【０００９】第一のマンホール蓋２は第二の蓋受け部１
２の内側に落とし込むように嵌め込まれるものであるた
め、その短辺の長さが第二のマンホール蓋３の短辺の長
さよりも短くなっている。また、第一及び第二の嵌合溝
１３，１４の各溝幅ｗは、第一及び第二のマンホール蓋
２，３の各一方の長辺側の端部を容易に差し込むことが
できるように、その厚さｔ1 ，ｔ2 よりも僅かに大きく
形成されている。The first manhole cover 2 is the second cover receiving portion 1
The length of the short side of the second manhole cover 3 is shorter than the length of the short side of the second manhole cover 3, because the length is shorter than that of the second manhole cover 3. In addition, the groove width w of each of the first and second fitting grooves 13 and 14 is such that the end portion on the long side of one of the first and second manhole covers 2 and 3 can be easily inserted. And is formed slightly larger than the thicknesses t 1 and t 2 .
【００１０】マンホールの地上開口部１を閉塞した状態
において第二のマンホール蓋３の下側となる第一のマン
ホール蓋２の内面（下面）には、コ字形の複数のタラッ
プ２１が突設されている。このタラップ２１は、第一の
マンホール蓋２の短辺方向に適当な間隔で並んでおり、
かつ長辺方向の位置がマンホール躯体コンクリートＡに
打ち込まれたタラップ１６とほぼ対応するものである。On the inner surface (lower surface) of the first manhole cover 2, which is the lower side of the second manhole cover 3 in a state where the above-ground opening 1 of the manhole is closed, a plurality of U-shaped trapezes 21 are projected. ing. The ramps 21 are arranged at appropriate intervals in the short side direction of the first manhole cover 2,
Moreover, the position in the long side direction substantially corresponds to the trap 16 driven into the manhole skeleton concrete A.
【００１１】また、第一のマンホール蓋２の長辺方向両
端（図では一端のみ示されている）近傍の内面には、そ
れぞれシート４が蛇腹状あるいは他の形状に小さく折り
畳まれて取り付けられている。このシート４は、例えば
仮設用の防護シートなどに用いられる丈夫な生地からな
り、広げた状態において第一の嵌合溝１３と第二の嵌合
溝１４の間の距離以上の長さとなる。また、第一及び第
二のマンホール蓋２，３の各短辺には、シート４の端部
と結合するための複数の金具２２，３１が設けられてい
る。なお、参照符号２３，３２は、第一及び第二のマン
ホール蓋２，３の取り外しや嵌め込み等の作業に際して
所定の治具を係合させるための係合孔である。Sheets 4 are attached to the inner surfaces of both ends of the first manhole cover 2 in the long side direction (only one end is shown in the drawing) in a bellows-like or other small-fold shape. There is. The sheet 4 is made of a strong cloth used for a temporary protection sheet, for example, and has a length equal to or more than the distance between the first fitting groove 13 and the second fitting groove 14 in the unfolded state. In addition, a plurality of metal fittings 22 and 31 for coupling with the ends of the seat 4 are provided on each short side of the first and second manhole covers 2 and 3. Note that reference numerals 23 and 32 are engagement holes for engaging a predetermined jig during work such as removal and fitting of the first and second manhole covers 2 and 3.
【００１２】このマンホールは、通常は図２及び図３に
示すように、第一及び第二のマンホール蓋２，３が互い
に積層された状態で地上開口部１内に嵌め込まれて、こ
の地上開口部１を閉塞している。この状態では、上側の
第二のマンホール蓋３の外面（上面）が、躯体コンクリ
ートＡの上面とほぼ同一レベルにあり、その上を歩行あ
るいは車両が走行するのに障害となるような段差が形成
されない。また、下側の第一のマンホール蓋２は、タラ
ップ２１及びシート４が下になるように嵌め込まれてい
る。As shown in FIGS. 2 and 3, this manhole is usually fitted in the ground opening 1 with the first and second manhole covers 2 and 3 stacked on each other, and the ground opening 1 is formed. The part 1 is closed. In this state, the outer surface (upper surface) of the upper second manhole cover 3 is at substantially the same level as the upper surface of the skeleton concrete A, and a step that forms an obstacle for walking or traveling of the vehicle is formed on it. Not done. Further, the first manhole cover 2 on the lower side is fitted so that the trap 21 and the sheet 4 face down.
【００１３】このマンホールを開放する場合は、所定の
治具を用いてまず上側の第二のマンホール蓋３を取り外
し、その一方の長辺側の端部３ａを、図４に示すように
第二の嵌合溝１４に差し込む。次に、同様に第一の蓋受
け部１１上から下側の第一のマンホール蓋２を取り外
し、その一方の長辺側の端部２ａを第一の嵌合溝１３に
差し込む。このとき、第一のマンホール蓋２は、タラッ
プ２１が設けられた面が内側となるようにする。これに
よって、第一及び第二のマンホール蓋２，３は、地上開
口部１の両側で互いに平行に対向しかつ直立した状態に
支持され、第一のマンホール蓋２に設けられたタラップ
２１が、躯体コンクリートＡに打ち込まれたタラップ１
６と上下に並んだ状態になる。In order to open this manhole, first of all, the upper second manhole cover 3 is removed using a predetermined jig, and one long side end 3a of the second manhole cover 3 is removed as shown in FIG. It is inserted in the fitting groove 14 of. Next, similarly, the lower first manhole cover 2 is removed from above the first lid receiving portion 11, and one end 2a on the long side thereof is inserted into the first fitting groove 13. At this time, the first manhole cover 2 is arranged such that the surface provided with the trap 21 is on the inside. As a result, the first and second manhole covers 2 and 3 are supported on both sides of the ground opening 1 so as to face each other in parallel and stand upright, and the trap 21 provided on the first manhole cover 2 is Trap 1 driven into skeleton concrete A
It will be in a state of being lined up and down with 6.
【００１４】次いで、第一のマンホール蓋２に取り付け
られたシート４を広げ、直立支持された両マンホール蓋
２，３の各短辺に設けられた金具２２，３１に結合す
る。これによって、マンホールの地上開口部１の周囲
が、第一及び第二の嵌合溝１３，１４によって直立支持
された二枚のマンホール蓋２，３と、その両短辺間に張
設された二枚のシート４（図４では一枚のみ示されてい
る）とで包囲されるので、落下防止用の柵を組み立てる
ための仮設資材を特に設置する必要がなく、歩行者の墜
落や物体の落下を有効に防止することができる。Next, the sheet 4 attached to the first manhole cover 2 is unfolded and joined to the metal fittings 22 and 31 provided on the short sides of both manhole covers 2 and 3 supported upright. As a result, the circumference of the above-ground opening 1 of the manhole is stretched between the two manhole covers 2 and 3 which are uprightly supported by the first and second fitting grooves 13 and 14, and both short sides thereof. Since it is surrounded by two sheets 4 (only one is shown in Fig. 4), it is not necessary to install temporary materials for assembling the fall prevention fence, and pedestrians can fall and The fall can be effectively prevented.
【００１５】また、直立支持された第一のマンホール蓋
２のタラップ２１は、作業者がマンホール内へ下りる際
の最初の足掛かりとなり、あるいは体を安定的に支持す
るための手摺とすることができるので、その下に続くマ
ンホール内部のタラップ１６へ容易に足を掛けることが
できる。また、作業者がマンホールから地上に出る時に
は、地上開口部１の上方で捕まって体を引き上げるため
の手摺として利用することができる。このため、マンホ
ールでの作業者の昇降の際の安全性が確実に向上され
る。Further, the turret 21 of the first manhole cover 2 supported upright serves as a first step when an operator descends into the manhole, or can be used as a handrail for stably supporting the body. Therefore, it is possible to easily hang the foot on the ramp 16 inside the manhole, which is located below it. Further, when the worker goes out of the manhole to the ground, it can be used as a handrail for catching above the ground opening 1 and pulling up the body. For this reason, the safety when the worker moves up and down in the manhole is surely improved.
【００１６】なお、本発明は、図示の実施例に限定され
るものではない。例えば、第一及び第二の蓋受け部１
１，１２の高さを互いに同一にすることによって、第一
及び第二のマンホール蓋２，３を同一の大きさとしても
良く、第一及び第二の嵌合溝１３，１４は双方ともイン
サート部材１５で形成するか、あるいは双方とも躯体コ
ンクリートＡに凹設することもできる。また、例えば四
枚のマンホール蓋で地上開口部１の四方の辺を取り囲む
ようにすることも可能であるが、閉塞した時に積層され
るマンホール蓋の支持を考慮すると、図示の実施例のよ
うな態様とするのが好ましい。The present invention is not limited to the illustrated embodiment. For example, the first and second lid receiving portions 1
By making the heights of 1 and 12 the same, the first and second manhole covers 2 and 3 may have the same size, and the first and second fitting grooves 13 and 14 are both inserts. It can be formed by the member 15, or both can be recessed in the skeleton concrete A. Further, it is possible to surround four sides of the ground opening 1 with four manhole covers, for example, but considering the support of the manhole covers to be stacked when closed, as in the illustrated embodiment. Aspects are preferred.
【００１７】[0017]
【発明の効果】本発明のマンホールによれば、次のよう
な効果が実現される。 (1) マンホールの地上開口部を開放する際に取り外した
複数のマンホール蓋及びシートによって、地上開口部の
周囲を囲む落下防止用の柵を容易に形成することができ
るので、落下防止柵用の仮設資材を特に設置する必要が
なく、歩行者の墜落や物体の落下を有効に防止すること
ができる。 (2) マンホール蓋に設けられたタラップを、作業者がマ
ンホール内を昇降する際の足掛かりあるいは手摺として
利用することができるので、下りる際にマンホール内壁
のタラップへ容易に足を掛け、あるいは地上へ出る時に
地上開口部の外側に手で捕まることができるので、安全
にかつ容易に昇降することができる。According to the manhole of the present invention, the following effects are realized. (1) A drop-prevention fence surrounding the ground opening can be easily formed by the multiple manhole covers and sheets that were removed when opening the ground opening of the manhole. It is possible to effectively prevent a pedestrian from falling and an object from falling without the need to install temporary materials. (2) The ramp provided on the manhole cover can be used as a foothold or a handrail when an operator moves up and down in the manhole, so when going down, it is easy to step on the ramp on the inner wall of the manhole or to the ground. It can be safely and easily moved up and down because it can be caught outside the ground opening by hand when exiting.
【図１】本発明に係るマンホールの一実施例を、第一及
び第二のマンホール蓋２，３を分離して示す断面斜視図
である。FIG. 1 is a cross-sectional perspective view showing an embodiment of a manhole according to the present invention in which first and second manhole covers 2 and 3 are separated.
【図２】上記実施例において、第一及び第二のマンホー
ル蓋２，３で地上開口部１を閉塞した状態を示す断面斜
視図である。FIG. 2 is a cross-sectional perspective view showing a state in which the ground opening 1 is closed by the first and second manhole covers 2 and 3 in the above embodiment.
【図３】上記実施例において、第一及び第二のマンホー
ル蓋２，３で地上開口部１を閉塞した状態を示す一部切
欠した平面図である。FIG. 3 is a partially cutaway plan view showing a state in which the ground opening 1 is closed by the first and second manhole covers 2 and 3 in the above embodiment.
【図４】上記実施例において、第一及び第二のマンホー
ル蓋２，３及びシート４で地上開口部１の周囲を囲んだ
状態を示す断面斜視図である。FIG. 4 is a cross-sectional perspective view showing a state in which the periphery of the ground opening 1 is surrounded by the first and second manhole covers 2 and 3 and the seat 4 in the above embodiment.
１ 地上開口部 １１ 第一の蓋受け部 １２ 第二の蓋受け部 １３ 第一の嵌合溝 １４ 第二の嵌合溝 ２ 第一のマンホール蓋 ２１ タラップ ３ 第二のマンホール蓋 ４ シート DESCRIPTION OF SYMBOLS 1 Ground opening part 11 1st lid receiving part 12 2nd lid receiving part 13 1st fitting groove 14 2nd fitting groove 2 1st manhole cover 21 Talap 3 2nd manhole cover 4 sheet
Claims (3)
し、 この地上開口部の上端部内壁に形成された蓋受け部上に
互いに積層状態に嵌め込まれて前記地上開口部を閉塞す
る複数のマンホール蓋と、 前記地上開口部の縁に沿って形成され前記各マンホール
蓋の一端を直立状態に差し込み支持可能な複数の嵌合溝
と、を有することを特徴とするマンホール。1. A plurality of openings for closing the ground opening are formed in a substantially rectangular shape, and are fitted in a laminated state on a lid receiving portion formed on an inner wall of an upper end of the ground opening to close the ground opening. A manhole, comprising: a manhole cover; and a plurality of fitting grooves formed along an edge of the opening on the ground so that one end of each manhole cover can be inserted and supported in an upright state.
端と対応する一対の嵌合溝が地上開口部の両側縁に沿っ
て設けられ、少なくとも一枚のマンホール蓋に、直立状
態での各マンホール蓋の両側端間に張設するシートが取
り付けられていることを特徴とするマンホール。2. The method according to claim 1, wherein the manhole cover has two manhole covers, and a pair of fitting grooves corresponding to one end of each manhole cover is provided along both side edges of the ground opening. The manhole cover is provided with a sheet to be stretched between both ends of each manhole cover in an upright state.
の内面にタラップが設けられていることを特徴とするマ
ンホール。3. The manhole according to claim 1, wherein a trap is provided on the inner surface of the manhole cover located at the lowermost side when the ground opening is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6051035A JPH07238562A (en) | 1994-02-25 | 1994-02-25 | Man-hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6051035A JPH07238562A (en) | 1994-02-25 | 1994-02-25 | Man-hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07238562A true JPH07238562A (en) | 1995-09-12 |
Family
ID=12875555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6051035A Withdrawn JPH07238562A (en) | 1994-02-25 | 1994-02-25 | Man-hole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07238562A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2937061A1 (en) * | 2008-10-10 | 2010-04-16 | La Rouere Richard De | Retractable articulated safety barrier for use in fence work to secure access to underground place in road, has panels articulated on portion with normal rotation that is blocked or unblocked in preferred folded or unfolded positions |
-
1994
- 1994-02-25 JP JP6051035A patent/JPH07238562A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2937061A1 (en) * | 2008-10-10 | 2010-04-16 | La Rouere Richard De | Retractable articulated safety barrier for use in fence work to secure access to underground place in road, has panels articulated on portion with normal rotation that is blocked or unblocked in preferred folded or unfolded positions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5775039A (en) | Drainage device | |
| US7810291B2 (en) | Connectable drainage device | |
| US5123776A (en) | Plastic fillable manhole cover with penetrating handles | |
| US5092002A (en) | Method and apparatus for forming a shower base | |
| US10837183B2 (en) | Rough-in box for creating penetrations in poured concrete flooring and method of use | |
| EP0803618A2 (en) | Modular element for the support and ventilation of floors | |
| AU2017204442B2 (en) | Washer assembly for use in affixing a guardrail support to a surface | |
| US7802402B2 (en) | Crawl space access device | |
| KR102110404B1 (en) | plastic underground rain water tank | |
| US5099887A (en) | Drain collar | |
| JPH07238562A (en) | Man-hole | |
| WO1981001585A1 (en) | Pool construction | |
| KR100882320B1 (en) | Draining plate | |
| EP3775436B1 (en) | Strengthening assemblies | |
| JP6031704B2 (en) | Shelter for evacuation in case of emergency such as tsunami and flood | |
| JP6648387B2 (en) | manhole | |
| US6477722B2 (en) | Overflow system with a spillway rim, particularly for a prefabricated swimming pool to be sunk into the ground, and a method and apparatus for its construction | |
| JP3638590B2 (en) | Multi-storey building construction method | |
| JPS6236913Y2 (en) | ||
| JPH0545660Y2 (en) | ||
| KR200462427Y1 (en) | Draining Plate Assembly for Bottom of Underground | |
| JP7365264B2 (en) | Rain curing structure for building interior units | |
| JP2554777B2 (en) | Access structure to the underfloor room | |
| JP6832074B2 (en) | Drainage structure of the building and the building | |
| KR200378229Y1 (en) | Manhole frame and manhole appling the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010508 |