- HOは1/87である。
120 ：名無しさん＠線路いっぱい[]：2019/03/15(金) 08:22:10.68 ID:AcXweys8 - >>118
>では或る模型がHOであるのか? HOではないのか?
>を判定するには、どういう事が決め手になるのかね?
>複数でもいいから全部書いてくれるかね?
↓ココに全部あります。これ以上も以下もありません。
これ以上無駄な質問は止めてください。
http://www.nmra.org/index-nmra-standards-and-recommended-practices
| - HOは1/87である。
139 ：名無しさん＠線路いっぱい[]：2019/03/15(金) 21:48:42.37 ID:AcXweys8 - >>135
>それらの数値が何処に書いてあるのか、何一つ書けないし
はいはい、おじいちゃん。ここに書いてありますよ
RP-7 Track Centers and Obstacle Clearances - (7/2017)
TN-7 Track Center and Obstacle Clearance Methodology (7/2017)
​​RP-7.1 Tangent Track Centers and Clearance Diagrams (1/2019)
RP-7.2 Curved Track Centers (7/2017)
RP-7.3 Curved Track Obstacle Clearances (7/2017)
RP-7.4 Interurban Track Centers and Obstacle Clearances (7/2017)
RP-7.5 Modifying Tangent Clearance Diagrams for Curved Tracks (7/2017)
RP-7.6 Using the NMRA Curved Track Center and Obstacle Clearance Assistant (7/2017)
​Curved Track Center and Obstacle Clearance Assistant (tool link)
認知の方には粘り強くリンク張り続けましょう。
| - HOは1/87である。
141 ：名無しさん＠線路いっぱい[]：2019/03/15(金) 21:57:14.50 ID:AcXweys8 - >>140
Track Centers and Obstacle Clearances
Former NMRA Standards S-6, S-7, and S-8, specifying clearance diagrams, track centers and obstacle clearances,
fall more appropriately in the category of Recommended Practices. These former Standards have been reviewed,
updated, and improved by the NMRA Standards & Conformance Dept., and reorganized into this new series of
Recommended Practices:
RP-7.1 Tangent Track Centers and Clearance Diagrams
NMRA RP-7.1 provides track centers, clearance diagrams for bridges and trackside obstacles, single-track tunnels,
and double-track tunnels for tangent (straight) tracks for each of the four NMRA-defined modeling eras; OldTime/Narrow Gauge (before 1920), Classic (1920-1969), Early Modern (1969-1983), and Modern (after 1983).
The diagrams are simplified combinations of those developed by the American Railway Engineering Association
(AREA) and its successor, the American Railway Engineering and Maintenance-of-Way Association (AREMA). Each
era has a recommended minimum tangent track centerline spacing, clearance diagrams labeled with their pertinent
dimensions, and a table giving those dimensions for the more common modeling scales.
| - HOは1/87である。
142 ：名無しさん＠線路いっぱい[]：2019/03/15(金) 22:01:54.16 ID:AcXweys8 - Curved Track Centerline and Obstacle Clearance Calculation Methodology
NMRA Technical Note TN-7
https://www.nmra.org/sites/default/files/standards/sandrp/pdf/tn-7_track_center_and_obstacle_clearance_methodology_jul_2017.pdf
| - HOは1/87である。
143 ：名無しさん＠線路いっぱい[]：2019/03/15(金) 22:02:53.05 ID:AcXweys8 - ntroduction
This NMRA Technical Note (TN) develops a methodology for calculating the centerline spacing of concentric circular tracks. Further, the methodology calculates the obstacle clearance for trackside objects, measured from curved track centerlines.
At the time of this writing, NMRA Standard S-6 [1]1
, S-7 [2] and S-8 [3] are under review, with the expectation of their replacement by a new Recommended Practices series introduced by NMRA RP-7. This TN
supports that review with an engineering analysis intended to form the basis for the revised content presented
in the new RP-7. Two companion computer applications (apps, in today’s computing jargon) implement the
equations developed in this TN.
The first app is a comprehensive MS-Excel spreadsheet NMRA Track Center and Obstacle Clearance
Calculator DRAFT 04.xlsm. It is intended primarily as a tool to help the NMRA Standards and Conformance
Department establish the underlying engineering and prepare content the new NMRA RP-7 series.
The second is an HTML application NMRA Track Center and Obstacle Clearance Calculator DRAFT
04.html. It is intended to help NMRA members easily make their own spacing calculations, if desired. It is
designed to operate on any digital device that can access the NMRA website. These apps are subject to change,
and would not be finalized until the new RP-7 series is ready for posting on the NMRA website.
| - HOは1/87である。
144 ：名無しさん＠線路いっぱい[]：2019/03/15(金) 22:04:16.00 ID:AcXweys8 - Background
Prototype railroads specify track centerline and adjacent obstacle clearance in accordance with practices
established by their own in-house practices, and by railroad associations (e.g., AREA/AREMA). Regardless
of their own practices, railroads first comply with federal or state laws that often require minimum spacing
values. The spacing values take varying equipment widths into account with a reasonably acceptable margin
to ensure contact does not occur.
Like the prototype, the NMRA recommends obstacle clearance in the form of clearance diagrams it presents
in the new RP-7.1. The obstacle clearance for tangent (straight) tracks is the half-width of the clearance diagram,
which RP-7.1 labels as dimension A. Similarly, the NMRA recommends tangent track centerline spacing in RP-7.2,
along with curved track centers obtained using the equations developed in this TN. These spacing values (prototype and NMRA)
are sufficient to accommodate all equipment and maintain acceptable clearance (actual space).
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