JPH0439228U

JPH0439228U -

Info

Publication number: JPH0439228U
Application number: JP8110690U
Authority: JP
Priority date: 1990-08-01
Filing date: 1990-08-01
Publication date: 1992-04-02

Description

[Brief explanation of the drawing]

第１図ａは本考案の実施例の斜視図、第１図ｂ
はその施工断面図、第１図ｃは施工部分斜視図、
第２図ａはその縦断面図及び第２図ｂは平面図、
第３図は他の実施例のａ縦断面図、ｂは平面図、
第４図は他の例のａ縦断面図、ｂは横断面図、ｃ
は一部切欠斜視図、第５図は従来の階段の縦断面
図である。１……段石、２……踏面板、３……蹴込板、４
……受板、５……滑り止め金物、６……かすがい
、７……補強石、８……軽量コンクリート、９…
…接着剤、１０……調節材、１１……敷きモルタ
ル、１２……躯体コンクリート、１３……キーコ
ンクリート、１４……切欠き、２１……段石、２
２……踏面板、２３……蹴込板、２４……硬質ゴ
ム、２５……鋼板、３１……受桁、４１……ささ
ら桁、４２……中間桁、４３……取付耳片、４４
……ボルトナツト。 Figure 1a is a perspective view of an embodiment of the present invention, Figure 1b
is a cross-sectional view of the construction process, and Figure 1c is a perspective view of the construction part.
FIG. 2a is a longitudinal sectional view thereof, and FIG. 2b is a plan view thereof.
FIG. 3 is a longitudinal sectional view of another embodiment, b is a plan view,
Figure 4 is a longitudinal cross-sectional view, b is a cross-sectional view, and c is another example.
5 is a partially cutaway perspective view, and FIG. 5 is a longitudinal sectional view of a conventional staircase. 1...Step stone, 2...Tread plate, 3...Riser board, 4
...Socket plate, 5...Slip prevention hardware, 6...Scatter, 7...Reinforcement stone, 8...Lightweight concrete, 9...
...Adhesive, 10...Adjustment material, 11...Mortar laying, 12...Structure concrete, 13...Key concrete, 14...Notch, 21...Step stone, 2
2...Tread plate, 23...Riser board, 24...Hard rubber, 25...Steel plate, 31...Support girder, 41...Spanner girder, 42...Middle girder, 43...Mounting ear piece, 44
...Boltnut.

Claims

[Scope of Claim for Utility Model Registration] 1. Precast stair steps consisting of a natural stone tread, a natural stone or hard board riser, and a lightweight concrete backing material integrally filled in the back of these. 2. The stair step stone according to claim 1, further comprising a protruding receiving plate for receiving the lower end of the adjacent upper riser. 3 Stair steps consisting of natural stone treads and risers, and a steel plate affixed to the back of the treads and risers via soundproofing material. 4. The stair step stone according to claim 3, wherein a mounting lug for the stair support girder is attached to the steel plate. 5. The stair step stone according to claim 4, wherein the mounting lug is a steel material that is bolted and nut-bonded to the stringer or intermediate girder via a cushioning material.